slot format indicator (sfi) and slot aggregation level indication on common group pdcch and sfi conf

专利摘要:
certain aspects of this disclosure provide techniques for a slot format indicator (sfi) and indication of the level of slot aggregation in a physical physical downlink control channel (gc pdcch) and conflict handling for the sfi. according to certain aspects, a wireless communication method is provided by a base station (bs). bs can determine a slot aggregation level and an aggregate slot format and send a downlink control channel including a sfi indicating the aggregate slot format and an indication of the slot aggregation level. the eu can receive the downlink control channel, including the sfi and the indication of the slot aggregation level, and the eu can determine a current slot format based on the received sfi level and slot aggregation.
公开号:BR112019019552A2
申请号:R112019019552
申请日:2018-03-22
公开日:2020-04-22
发明作者:Lee Heechoon；Sun Jing；Chen Wanshi
申请人:Qualcomm Inc；
IPC主号:

专利说明:

SLOT FORMAT INDICATOR (SFI) AND SLOT AGGREGATION LEVEL INDICATION IN COMMON GROUP PDCCH AND SFI CONFLICT HANDLING
CROSS REFERENCE FOR RELATED APPLICATION AND PRIORITY CLAIM [0001] This application claims priority for US Application No. 15 / 927,716, filed on March 21, 2018, which claims benefit and priority for US Provisional Patent Application No. 62 / 476,634, deposited on March 24, 2017, both of which are incorporated herein by reference in their entirety for all applicable purposes.
FUNDAMENTALS
Field of Disclosure [0002] Aspects of the present disclosure generally refer to wireless communication systems and, more particularly, to a slot format indicator (SFI) and indication of the level of slot allocation in a physical control channel. common group downlink (GC PDCCH) and conflict handling for SFI on certain systems, such as new radio systems (NR).
Description of the Related Technique [0003] Wireless communication systems are widely deployed to provide various telecommunications services, such as telephony, video, data, messages, broadcasts, etc. These wireless communication systems can employ multiple access technologies capable of supporting communication with multiple users, sharing available system resources (for example, bandwidth and transmission power). Examples of such multiple access systems include
Petition 870190093896, of 9/19/2019, p. 6/73
2/43 3GPP LTE (Long Term Evolution) systems (3rd Generation Partnership Project), LTE-A (LTE Advanced) systems, code division multiple access (CDMA) systems, time division multiple access systems (TDMA) ), Frequency Division Multiple Access Systems (FDMA), Orthogonal Frequency Division Multiple Access Systems (OFDMA), Single Carrier Frequency Division Multiple Access Systems (SC-FDMA) and Division Multiple Access Systems synchronous code by time division (TD-SCDMA).
[0004] In some examples, a wireless multiple access communication system may include a number of base stations (BSs) that can simultaneously support communication to multiple communication devices, also known as user devices (UEs). In an LTE or LTE-A network, a set of one or more BSs can define an eNodeB (eNB). In other examples (for example, in a next generation, new radio (NR) or 5G network), a wireless multiple access communication system may include multiple distributed units (DUs) (for example, edge units (EUs), edge nodes (ENs), radio heads (RHs), intelligent radio heads (SRHs), transmit reception points (TRPs), etc.) in communication with a number of central units (CUs) (for example, nodes (CNs), access node controllers (ANCs, etc.), where a set of one or more DUs, in communication with a CU, can define an access node (for example, which can be referred to as a BS , next generation NB (gNB), TRP, etc.). A BS or DU can communicate with a set of UEs on downlink channels (for example, for
Petition 870190093896, of 9/19/2019, p. 7/73
3/43 transmissions from a BS or to an UE) and uplink channels (for example, transmissions from an UE to a BS or DU).
[0005] These multiple access technologies have been adopted in several telecommunication standards to provide a common protocol that enables different wireless devices for communication at the municipal, national, regional and even global levels. NR is an example of an emerging telecommunications standard. NR is a set of improvements to the mobile LTE standard enacted by 3GPP. It is designed to better support mobile broadband Internet access, improving spectral efficiency, reducing costs, improving services, making use of the new spectrum and integrating better with other open standards using OFDMA with a cyclic prefix (CP) in the downlink (DL) and uplink (UL), as well as beamforming support, multiple antenna technology, multiple input (MIMO) and carrier aggregation.
[0006] However, as the demand for access to mobile broadband continues to increase, there is a need for further improvements in NR and LTE technology. Preferably, these enhancements should apply to other multiple access technologies and to the telecommunication standards that employ those technologies.
BRIEF SUMMARY [0007] Disclosure systems, methods and devices each have several aspects, none of which is solely responsible for their desirable attributes. Without limiting the scope of this disclosure, as expressed by the following claims, some resources will be discussed
Petition 870190093896, of 9/19/2019, p. 8/73
4/43 soon. After considering this discussion, and particularly after reading the section entitled Detailed description, we will understand how the features in this disclosure provide advantages that include better communication between access points and stations on a wireless network.
[0008] Certain aspects of this disclosure generally relate to a slot format indicator (SFI) and indication of slot aggregation level on a common group downlink physical control channel (GC PDCCH) and conflict handling for SFI in certain systems, such as new radio (NR) systems.
[0009] Certain aspects of the present disclosure provide a method for wireless communication that can be carried out, for example, by user equipment (UE). The method usually includes receiving a downlink control channel carrying an SFI that indicates whether one or more symbols in at least one current slot are for uplink or downlink. The method includes determining a scheduled transmission that conflicts with SFI. The method includes determining a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission. The method includes transmitting or receiving on one or more symbols based on the direction determined for one or more symbols.
[0010] Certain aspects of the present disclosure provide a device for wireless communication, such as a UE. The device usually includes means for receiving a downlink control channel carrying an SFI that indicates whether one or more symbols in at least one current slot are for uplink or downlink. The device includes means for
Petition 870190093896, of 9/19/2019, p. 9/73
5/43 determine a scheduled transmission that conflicts with SFI. The apparatus includes means for determining a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission. The apparatus includes means for transmitting or receiving one or more symbols based on the direction determined for one or more symbols.
[0011] Certain aspects of the present disclosure provide a device for wireless communication, such as a UE. The device usually includes a transceiver configured to receive a downlink control channel carrying an SFI that indicates whether one or more symbols in at least one current slot are for uplink or downlink. The device includes at least one processor attached to a memory and configured to determine a scheduled transmission that conflicts with SFI. At least one processor is still configured to determine a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission. The transceiver is further configured to transmit or receive on one or more symbols based on the direction determined for one or more symbols.
[0012] Certain aspects of the present disclosure provide a computer-readable medium having computer executable code stored for wireless communications. Executable computer code generally includes code to receive a downlink control channel carrying an SFI that indicates whether one or more symbols in at least one current slot are for uplink or downlink. The computer's executable code includes code for
Petition 870190093896, of 9/19/2019, p. 10/73
6/43 determine a scheduled transmission that conflicts with SFI. The executable computer code includes code to determine a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission. The computer executable code includes code to transmit or receive on one or more symbols based on the direction determined for one or more symbols.
[0013] Certain aspects of the present disclosure provide a method for wireless communication that can be carried out, for example, by a base station (BS). The method generally includes determining a slot aggregation level and a format for the aggregated slots. The method includes sending a downlink control channel including an SFI indicating the shape of the aggregate slot and an indication of the aggregation level of the slot.
[0014] Certain aspects of this disclosure provide a method for wireless communication that can be carried out, for example, by the UE. The method usually includes receiving a downlink control channel including an SFI and an indication of a slot aggregation level. The method includes determining a format for a current slot based on the SFI received and the aggregation level of the slot.
[0015] Certain aspects of the present disclosure provide a device for wireless communication by a BS. The apparatus generally includes means for determining a level of slot aggregation and a format of the aggregated slots. The device includes means to send a downlink control channel including an SFI indicating the format of the aggregate slot and an indication of the aggregation level of the
Petition 870190093896, of 9/19/2019, p. 11/73
7/43 slot.
[0016]
Certain aspects of the present disclosure provide an apparatus for wireless communication by an UE. The device usually includes means for receiving a downlink control channel including an SEI and an indication of a slot aggregation level. The device includes means for determining a current slot format based on the SEI received and the aggregation level of the slot.
[0017] Aspects generally include apparatus methods, systems, computer-readable media and processing systems, as substantially described herein with reference and as illustrated by the attached drawings.
[0018] For the accomplishment of the previous and related purposes, one or more aspects comprise the characteristics described below completely and particularly pointed out in the claims. The description that follows and the accompanying drawings present in detail certain illustrative features of one or more aspects. These characteristics are indicative, however, of just a few of the various ways in which the principles of various aspects can be employed, and this description is intended to include all of these aspects and their equivalents.
BRIEF DESCRIPTION OF THE DRAWINGS [0019] In order for the way in which the above characteristics of the present disclosure can be understood in detail, a more particular description, summarized above, can be made by reference to aspects, some of which are illustrated in the attached drawings . It should be noted, however, that the accompanying drawings illustrate
Petition 870190093896, of 9/19/2019, p. 12/73
8/43 only certain typical aspects of this disclosure and, therefore, should not be considered as limiting its scope, since the description may admit other equally effective aspects.
[0020] FIG. 1 is a block diagram that conceptually illustrates an example of a telecommunications system, according to certain aspects of the present disclosure.
[0021] FIG. 2 is a block diagram illustrating an example of a logical architecture for a distributed radio access network (RAN), in accordance with certain aspects of the present disclosure.
[0022] FIG. 3 is a diagram illustrating an example of the physical architecture of a distributed RAN, in accordance with certain aspects of the present disclosure.
[0023] FIG. 4 is a block diagram that conceptually illustrates a drawing of an example of a base station (BS) and user equipment (UE), in accordance with certain aspects of the present disclosure.
[0024] FIG. 5 is a diagram showing examples for implementing a stack of communication protocols, in accordance with certain aspects of the present disclosure.
[0025] FIG. 6 illustrates an example of frame format for a new radio (NR) system, according to certain aspects of the present disclosure.
[0026] FIG. 7 is an example of an aggregated slot with a slot format indicator (SFI) in each slot, in accordance with certain aspects of this disclosure.
[0027] FIG. 8 is an example of an aggregated slot with SFI only in the first slot, according to certain aspects
Petition 870190093896, of 9/19/2019, p. 13/73
9/43 of this disclosure.
[0028] FIG. 9 is a flow chart illustrating examples of operations that can be performed by a BS for wireless communication, in accordance with certain aspects of the present disclosure.
[0029] FIG. 10 is a flow diagram illustrating examples of operations that can be performed by a UE for wireless communication, in accordance with certain aspects of the present disclosure.
[0030] To facilitate understanding, identical reference numbers were used, when possible, to designate identical elements that are common to the figures. It is contemplated that the elements disclosed in one aspect can be used beneficially in other aspects without specific recitation.
DETAILED DESCRIPTION [0031] Aspects of the present disclosure provide devices, methods, processing systems and computer-readable media for NR (access to new radio or 5G technology). NR can support several wireless communication services, such as improved mobile broadband (eMBB) targeting wide bandwidth (for example, 80 MHz or more), millimeter wave (mmW) intended for high carrier frequency (for example, 25 GHz or more) MTC massive machine type communications (mMTC) that uses MTC techniques not compatible with previous versions and / or mission-critical destination with ultra-reliable low latency communications (URLLC). These services may include latency and reliability requirements. These services may also have time intervals
Petition 870190093896, of 9/19/2019, p. 14/73
10/43 different transmission (TTI) to meet the respective quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.
[0032] In NR, slots and symbols inside slots, it can have several configurations, such as downlink, uplink, empty, reserved (for example, only for data or only control), etc. A slot format indicator (SEI) can carry information that indicates the shape of a current slot (and / or a future slot). The SEI can be transported in a downlink region of a slot, for example, in a downlink control channel, such as the common group physical downlink control channel (GC PDCCH). In NR, slots can be aggregated (referred to as an aggregated slot). In some examples, an aggregate slot has control regions (uplink and / or downlink) in the middle. In this case, SEI can be sent to each slot. However, in some cases, there is only one downlink control region at the beginning of the aggregate slot. In this case, it is desirable that the user equipment (UE) has some information on the level of aggregation.
[0033] In addition, in some cases, the SEI may conflict with other scheduled transmissions, such as concessions or ACK / NACK timing (negative confirmation / confirmation) in downlink control information (DCI) or periodic signaling. Thus, techniques for handling / resolving conflicts for SEI and other transmissions are desirable.
[0034] Aspects of this disclosure provide techniques and devices for SEI and indication of the level of aggregation in the downlink control channel and for
Petition 870190093896, of 9/19/2019, p. 15/73
11/43 handling of SFI conflicts.
[0035] The following description provides examples and does not limit the scope, applicability or examples set out in the claims. Changes can be made to the function and arrangement of the elements discussed without departing from the scope of the disclosure. Various examples may omit, replace, or add various procedures or components as appropriate. For example, the methods described can be performed in a different order than described, and several steps can be added, omitted or combined. In addition, the features described in relation to some examples can be combined into some other examples. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set out here. In addition, the scope of the disclosure is intended to cover such apparatus or method that is practiced using another structure, functionality or structure and functionality in addition to or in addition to the various aspects of the disclosure presented here. It should be understood that any aspect of the disclosure disclosed herein may be incorporated by one or more elements of a claim. The word exemplary is used here to mean serving as an example, instance or illustration. Any aspect described here as exemplary is not necessarily to be interpreted as preferred or advantageous over other aspects.
[0036] The techniques described here can be used for various wireless communication networks, such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other networks. The terms network and system are often used
Petition 870190093896, of 9/19/2019, p. 16/73
12/43 interchangeable. A CDMA network can implement radio technology such as UTRA (Universal Terrestrial Radio Access), cdma2000, etc. UTRA includes broadband CDMA (WCDMA) and other variants of CDMA. The cdma2000 covers the IS-2000, IS-95 and IS-856 standards. A TDMA network can implement radio technology such as GSM (Global System for Mobile Communications). An OFDMA network can implement radio technology, such as NR (for example 5G RA), E-UTRA (Evolved UTRA), UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. UTRA and E-UTRA are part of UMTS (Universal Mobile Telecommunication System). NR is an emerging wireless communication technology being developed in conjunction with the 5GTF (5G Technology Forum). 3GPP LTE (Long Term Evolution) and LTE-A (LTEAdvanced) are versions of UMTS that use E-UTRA. UTRA, EUTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization called 3GPP (3rd Generation Partnership Project). Cdma2000 and UMB are described in documents from an organization called 3GPP2 (3rd Generation Partnership Project 2). The techniques described here can be used for the wireless networks and radio technologies mentioned above, as well as other wireless networks and radio technologies. For clarity, although the aspects can be described here using terminology commonly associated with 3G and / or 4G wireless technologies, aspects of the present disclosure can be applied to other generation-based communication systems, such as 5G and later, including NR technologies.
Petition 870190093896, of 9/19/2019, p. 17/73
13/43
EXAMPLE WIRELESS COMMUNICATION SYSTEM [0037] FIG. 1 illustrates an example of a wireless communication network 100 in which aspects of the present disclosure can be realized. For example, wireless communication network 100 may be a new radio (NR) or 5G network. As illustrated in FIG. 1, the wireless network 100 can include a number of base stations (BSs) 110 and user equipment (EU) 120. A BS 110 in the wireless communication network 100 can determine a slot allocation level and a slot format and send a slot format indicator (SFI) to the UE 120 indicating the shape of the slot in the downlink control channel (for example, in a common group physical downlink control channel (GC PDCCH)). In addition, the BS can send the UE 120 an indication of the level of adjustment of the slot in the downlink control channel. The UE 120 can receive the downlink control channel including the SFI and the indication of a slot allocation level and determine a current slot format based on the received SFI and slot allocation level. BS 110 can send downlink control (DCI) information, including an uplink or downlink lease or ACK / NACK timing information that conflicts with SFI. In addition, BS 110 and / or UE 120 can be configured with periodic uplink or downlink signaling which may conflict with SFI. UE 120 can determine whether to dry the SFI, DCI, or periodic signaling for the symbols in the slots.
[0038] One BS Can be a station that communicates with the UEs. Each BS 110 can provide coverage of communication for a area qeoqráfica particular. In 3GPP, the
Petition 870190093896, of 9/19/2019, p. 18/73
14/43 The term cell can refer to a coverage area of a Node B (NB) and / or an NB subsystem that serves that coverage area, depending on the context in which the term is used. In NR systems, the term cell and next generation NB (gNB), BS, NR BS, BS, transmission receiving point (TRP), etc., can be interchangeable. In some instances, a cell may not necessarily be stationary and the cell's geographic area may move according to the location of a mobile BS. In some examples, BSs can be interconnected to each other and / or to one or more BSs or network nodes (not shown) on wireless communication network 100 through various types of backhaul interfaces, such as a direct physical connection, a virtual network, or similar, using any suitable transport network.
[0039] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a particular radio access technology (RAT) and can operate on one or more frequencies. A RAT can also be called radio technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, tone, subband, subcarrier, etc. Each frequency can support a single RAT in a given geographic area, in order to avoid interference between wireless networks from different RATs. In some cases, NR or 5G RAT networks can be deployed.
[0040] A BS can provide communication coverage for a macro cell, a peak cell, a femto cell and / or other types of cell. A macro cell
Petition 870190093896, of 9/19/2019, p. 19/73
15/43 can cover a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs with a service subscription. A peak cell can cover a relatively small geographical area and can allow unrestricted access by UEs with a service subscription. A femto cell can cover a relatively small geographic area (for example, a house) and can allow restricted access by UEs that are associated with the femto cell (for example, UEs in a Closed Subscriber Group (CSG), UEs for users in home, etc.). A BS for a macro cell can be referred to as a BS macro. A BS for a peak cell can be referred to as a BS peak. A BS for a femto cell can be referred to as a BS femur or home BS. In the example shown in FIG. 1, BSs 110a, 110b and 110c can be BS macros for macro cells 102a, 102b and 102c, respectively. The BS HOx can be a BS peak for a 102x cell peak. BSs HOy and IlOz can be femto BS for femto cells 102y and 102z, respectively. A BS can support one or multiple (for example, three) cells.
[0041] Wireless communication network 100 may also include relay stations. A relay station is a station that receives a transmission of data and / or other information from an upstream station (for example, a BS or a UE) and sends a transmission of the data and / or other information to a downstream station ( for example, UE or a BS). A relay station can also be a UE that transmits relays to other UEs. In the example shown in FIG. 1, a HOr relay station can communicate with BS 110a and an UE
Petition 870190093896, of 9/19/2019, p. 20/73
16/43
120r in order to facilitate communication between BS 110a and UE 120r. A retransmission station can also be referred to as a BS retransmission, a retransmission, etc.
[0042] Wireless communication network 100 can be a heterogeneous network that includes BSs of different types (for example, macro BS, peak BS, femto BS, retransmission, etc.). These different types of BSs can have different levels of transmission power, different coverage areas and different impacts on interference in the wireless communication network 100. For example, a macro BS can have a high level of transmission power (for example, 20 Watts) while the BS peak, BS femto and retransmission may have a lower transmit power level (for example, 1 Watt).
[0043] Wireless communication network 100 can support synchronous or asynchronous operation. For synchronous operation, BSs can have similar frame timing, and transmissions from different BSs can be approximately time aligned. For asynchronous operation, BSs may have different frame timings, and transmissions from different BSs may not be time aligned.
[0044] A network controller 130 can couple with a set of BSs and provide coordination and control for these BSs. The network controller 130 can communicate with the BSs 110 through a backhaul transport channel. BSs 110 can also communicate with each other (for example, directly or indirectly) via wireless or wired return transport channel.
[0045] UEs 120 (e.g. 120x, 120y, etc.) can be dispersed over wireless network 100, and each
Petition 870190093896, of 9/19/2019, p. 21/73
17/43
UE can be stationary or mobile. A UE can also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer equipment (CPE), cell phone, smart phone, personal digital assistant (PDA) , a wireless modem, a wireless communication device, a portable device, a laptop, a cordless phone, a local wireless loop station (WLL), a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook medical device or medical equipment, a biometric sensor / device, a wearable device such as a smart watch, smart clothes, smart glasses, a smart bracelet, smart jewelry (for example, a smart ring, a smart bracelet, etc. .) entertainment device (for example, a music device, a video device, a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, industrial handling equipment, a global positioning system device or any other suitable device that is configured to communicate wirelessly or wired. Some UEs can be considered machine-type communication devices (MTC) or evolved MTC devices (eMTC). The MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (for example, remote device) or some other entity. A wireless node can provide, for example, connectivity to or to a network (for example, a network
Petition 870190093896, of 9/19/2019, p. 22/73
18/43 over a wide area, such as the Internet or a cellular network) through a wired or wireless communication link. Some UEs can be considered Internet-of-Things (loT) devices, which can be narrowband loT (NB-IoT) devices.
[0046] Certain wireless networks (for example, LTE) use orthogonal frequency division multiplexing (OFDM) in the downlink and single carrier frequency division multiplexing (SC-FDM) in the uplink. OFDM and SC-FDM partition the system's bandwidth into several orthogonal (K) subcarriers, which are also commonly called tones, boxes, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can be dependent on the system's bandwidth. For example, the spacing of the subcarriers can be 15 kHz and the minimum resource allocation (called the resource block (RB)) can be 12 subcarriers (or 180 kHz). Consequently, the nominal FFT size can be 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz), respectively. The system's bandwidth can also be partitioned into sub-bands. For example, a subband can cover 1.08 MHz (ie 6 resource blocks), and there can be 1, 2, 4, 8 or 16 subbands for 1.25, 2 system bandwidth , 5, 5, 10 or 20 MHz, respectively.
[0047] Although the aspects of the examples described here may be associated with LTE technologies,
Petition 870190093896, of 9/19/2019, p. 23/73
19/43 aspects of this disclosure may apply to other wireless communication systems, such as NR. The NR can use OFDM with a CP on the uplink and downlink and include support for half-duplex operation using TDD. The beam formation can be supported and the beam direction can be dynamically configured. MIMO transmissions with pre-coding can also be supported. The MIMO configurations on the DL can support up to 8 transmission antennas with multi-layered DL transmissions of up to 8 streams and up to 2 streams per EU. Multilayer transmissions with up to 2 streams per EU can be supported. Multiple cell aggregation can be supported with up to 8 service cells.
[0048] In some examples, access to the air interface can be scheduled. A scheduling entity (for example, a BS) allocates resources for communication between some or all devices and equipment within its service area or cell. The scheduling entity may be responsible for scheduling, assigning, reconfiguring and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities use resources allocated by the scheduling entity. BSs are not the only entities that can function as a scheduling entity. In some instances, a UE may function as a scheduling entity, scheduling resources for one or more subordinate entities (for example, one or more other UEs), and the other UEs use resources scheduled by the UE for wireless communication. A UE can function as a scheduling entity on a point-to-point (P2P) network and / or on a
Petition 870190093896, of 9/19/2019, p. 24/73
20/43 mesh network. In an example of a mesh network, UEs can communicate directly with each other, in addition to communicating with the scheduling entity.
[0049] In FIG. 1, a full line with double arrows indicates desired transmissions between a UE and a service BS, which is a BS designated to serve the UE on the downlink and / or uplink. A finely dashed line with double arrows indicates interfering transmissions between a UE and a BS.
[0050] FIG. 2 illustrates an example of the logical architecture of a distributed RAN 200, which can be implemented on the wireless communication network 100 illustrated in FIG. 1. A 5G 206 access node can include an access node controller (ANC) 202. ANC 202 can be a CU of the distributed RAN 200. The return transport channel interface for the next generation main network (NG-CN) 204 may end at ANC 202. The return transport channel interface for neighboring next generation access nodes (NG-ANs) 210 can end in ANC 202. ANC 202 can include one or more 208 TRPs (for example, cells, BSs, gNBs, etc.). 208 TRPs can be a DU. TRPs 208 can be connected to a single ANC (for example, ANC 202) or more than one ANC (not shown). For example, for RAN sharing, radio service (RaaS) and service-specific AND deployments, TRPs 208 can be connected to more than one ANC. A 208 TRPs can include one or more antenna ports. The TRPs 208 can be configured to serve individually (for example, dynamic selection) or together (for example, joint transmission) to traffic to a UE.
Petition 870190093896, of 9/19/2019, p. 25/73
21/43 [0051] The logical architecture of the distributed RAN 200 can support fronthauling solutions in different types of deployment. For example, the logical architecture can be based on transmission network resources (for example, bandwidth, latency and / or jitter). The local architecture of the distributed RAN 200 can share resources and / or components with LTE. The NG-AN 210 can support dual connectivity with NR and can share a common fronthaul for LTE and NR. The logical architecture of the distributed RAN 200 can enable cooperation between and among TRPs 208, for example, within a TRP and / or through TRPs through ANC 202. An inter-TRP interface cannot be used.
[0052] The logical functions can be dynamically distributed in the logical architecture of the distributed RAN 200. As will be described in more detail with reference to FIG. 5, the Radio Resource Control (RRC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, the Media Access Control (MAC) layer ) and a Physical layer (PHY) can be adaptively placed in DU (for example, TRP 208) or CU (for example, ANC 202).
[0053] FIG. 3 illustrates an example of physical architecture of a distributed RAN 300, according to aspects of the present disclosure. A centralized main network unit (C-CU) 302 can host main network functions. The C-CU 302 can be deployed centrally. The functionality of the C-CU 302 can be downloaded (for example, for advanced wireless services (AWS)), in an effort to handle peak capacity.
Petition 870190093896, of 9/19/2019, p. 26/73
22/43 [0054] A centralized RAN unit (C-RU) 304 can host one or more ANC functions. The C-RU 304 can host the functions of the main network locally. The C-RU 304 may have a distributed deployment. The C-RU 304 can be located near the edge of the network.
[0055] A DU 306 can host one or more TRPs (edge node (EN), edge unit (EU), radio head (RH), smart radio head (SRH) or similar). DU 306 can be located at the edges of the network with radio frequency (RF) functionality.
[0056] FIG. 4 illustrates examples of components of BS 110 and UE 120 illustrated in FIG. 1, which can be used to implement aspects of this disclosure. For example, antennas 452, Tx / Rx 222, processors 466, 458, 464 and / or controller / processor 480 of UE 120 and / or antennas 434, processors 460, 420, 438 and / or controller / processor 440 of BS 110 can be used to perform the operations described and illustrated herein with reference to FIGs. 9 and 10.
[0057] In BS 110, a transmission processor 420 can receive data from a data source 412 and control information from a controller / processor 440. The control information can be for the physical broadcast channel (PBCH), indicator channel physical control format (PCFICH), hybrid physical ARQ indicator channel (PHICH), downlink physical control channel (PDCCH), common group PDCCH (GC PDCCH), etc. The data can be for the physical shared downlink channel (PDSCH), etc. For example, according to certain aspects of this disclosure, BS 110 may send an
Petition 870190093896, of 9/19/2019, p. 27/73
23/43 slot (SFI), slot aggregation level information and / or downlink control (DCI) information in a downlink control region. The processor 420 can process (e.g., coding map and symbol) the control data and information to obtain data symbols and control symbols, respectively. Processor 420 can also generate reference symbols, such as primary sync signal (PSS), secondary sync signal (SSS) and cell specific reference signal (CRS). A transmission 430 multi-input and multiple output (MIMO) processor (TX) can perform spatial processing (for example, pre-coding) on data symbols, control symbols and / or reference symbols, if applicable, and can provide streams of output symbols to modulators (MODs) 432a to 432t. Each 432 modulator can process a respective output symbol stream (for example, for OFDM, etc.) to obtain an output sample stream. Each 432 modulator can further process (for example, convert to analog, amplify, filter and upwardly convert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 432a to 432t can be transmitted through antennas 434a to 434t, respectively.
[0058] In UE 120, antennas 452a to 452r can receive downlink signals from BS 110 and can provide received signals to demodulators (DEMODs) 454a to 454r, respectively. For example, according to certain aspects of this disclosure, the UE 120 may receive a slot format indicator (SEI), slot aggregation level information and / or downlink control information (DCI) from BS
Petition 870190093896, of 9/19/2019, p. 28/73
24/43
110 in a downlink control region. Each demodulator 454 can condition (for example, filter, amplify, downwardly convert and digitize) a respective received signal to obtain input samples. Each demodulator 454 can further process the input samples (for example, for OFDM, etc.) to obtain received symbols. A MIMO 456 detector can obtain symbols received from all demodulators 454a through 454r, perform MIMO detection on received symbols, if applicable, and provide detected symbols. A receiving processor 458 can process (e.g., demodulate, deinterleave and decode) the detected symbols, provide decoded data for UE 120 to a data store 460 and provide decoded control information to a controller / processor 480.
[0059] In the uplink, in the UE 120, a transmission processor 464 can receive and process data (for example, for the physical shared uplink channel (PUSCH)) from a 462 data source and control information (for example, for the uplink physical control channel (PUCCH)) of the controller / processor 480. The 464 transmission processor can also generate reference symbols for a reference signal (for example, the poll reference signal (SRS)). The symbols of the transmission processor 464 can be pre-encoded by a TX MIMO 466 processor, if applicable, further processed by demodulators 454a to 454r (for example, for SC-FDM, etc.) and transmitted to BS 110. In BS 110 , UE 120 uplink signals can be received by antennas 434, processed by modulators 432,
Petition 870190093896, of 9/19/2019, p. 29/73
25/43 detected by a MIMO 436 detector, if applicable, and further processed by a receiving processor 438 to obtain decoded data and control information sent by the UE 120. The receiving processor 438 can deliver the decoded data to a data warehouse 439 and the decoded control information to the controller / processor 440.
[0060] The controllers / processors 440 and 480 can direct the operation in BS 110 and UE 120, respectively. The 440 processor and / or other processors and modules in the base station 110 can perform or direct, for example, the execution of various processes for the techniques described herein. The processor 480 and / or other processors and modules in the UE 120 can also realize or direct, such as the execution of the functional blocks illustrated in FIG. 10, and / or other processes for the techniques described herein. For example, according to certain aspects of this disclosure, UE 120 processors can determine a direction for one or more symbols in at least one current slot based on SEI, DCI and / or slot aggregation information received from BS 110 and / or based on periodic signaling. Processor 440 and / or other processors and modules in BS 110 can also realize or direct, such as the execution of the functional blocks illustrated in FIG. 9, and / or other processes for the techniques described herein. Memories 442 and 482 can store data and program codes for BS 110 and UE 120, respectively. A 444 scheduler can schedule UEs for downlink and / or uplink data transmission.
[0061] FIG. 5 illustrates a diagram 500 showing
Petition 870190093896, of 9/19/2019, p. 30/73
26/43 examples to implement a communications protocol stack, according to aspects of this disclosure. The illustrated communications protocol stacks can be implemented by devices that operate on a 5G system (for example, a system that supports uplink-based mobility). The diagram 500 illustrates a communication protocol stack including an RRC 510 layer, a PDCP 515 layer, an RLC 520 layer, a MAC 525 layer and a PHY 530 layer. Layers of the protocol stack can be implemented as separate software modules, portions of a processor or ASIC, portions of non-placed devices connected by a communication link, or various combinations thereof. Placed and unplaced implementations can be used, for example, in a protocol stack for a network access device (for example, ANs, CUs and / or DUs) or a UE.
[0062] A first option 505-a shows a split implementation of a protocol stack, in which the implementation of the protocol stack is split between a centralized network access device (for example, an ANC 202 in FIG. 2) and distributed network access device (e.g. DU 208 in FIG. 2). In the first option 505-a, an RRC layer 510 and a PDCP layer 515 can be implemented by the central unit, and an RLC layer 52 0, a MAC layer 52 5 and a PHY layer 53 can be implemented by the DU. In several examples, CU and DU can be placed or not placed. The first option 505a can be useful in a macro cell, micro cell or peak cell implantation.
[0063] A second option 505-b shows a
Petition 870190093896, of 9/19/2019, p. 31/73 / 43 unified implementation of a protocol stack, in which the protocol stack is implemented on a single network access device. In the second option, the RRC 510 layer, the PDCP 515 layer, the RLC 520 layer, the MAC 525 layer and the PHY 530 layer can be implemented by the AN. The second option 505-b may be useful in a femto cell implantation.
[0064] Regardless of whether a network access device implements part or all of a protocol stack, a UE can implement a complete protocol stack (e.g., RRC 510 layer, PDCP 515 layer, RLC 520 layer, the MAC 525 layer and the PHY 530 layer).
[0065] In LTE, the basic transmission time interval (TTI) or the packet duration is the 1 ms subframe. In NR, a subframe is still 1 ms, but the basic TTI is referred to as a slot. A subframe contains a variable number of slots (for example, 1, 2, 4, 8,
16, ... slots) depending on the spacing of the subcarrier. The NR RB is 12 consecutive frequency subcarriers. The NR can support a 15 KHz subcarrier spacing and another subcarrier spacing can be defined in relation to the base subcarrier spacing, for example, 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc. The lengths of symbols and slots are scaled with the spacing of the subcarrier. The length of the CP also depends on the spacing of the subcarrier.
[0066] FIG. 6 is a diagram showing an example of a frame format 600 for NR. The transmission timeline for each downlink and uplink
Petition 870190093896, of 9/19/2019, p. 32/73
28/43 can be partitioned into radio frame units. Each radio frame can have a predetermined duration (for example, 10 ms) and can be partitioned into 10 subframes, each 1 ms, with indices from 0 to 9. Each subframe can include a variable number of slots, depending on the spacing the subcarrier. Each slot can include a variable number of symbol periods (for example, 7 or 14 symbols) depending on the spacing of the subcarrier. Symbol periods in each slot can be assigned indexes. A minislot is a subslot structure (for example, 2, 3 or 4 symbols).
[0067] Each symbol in a slot can indicate a link direction (for example, DL, UL or flexible) for data transmission and the link direction for each subframe can be switched dynamically. Link directions can be based on the shape of the slot. Each slot can include DL / UL data, as well as DL / UL control information.
[0068] In NR, a synchronization signal block (SS) is transmitted. The SS block includes a PSS, an SSS and a two PBCH symbol. The SS block can be transmitted at a fixed slot location, such as symbols 0-3, as shown in FIG. 6. PSS and SSS can be used by UEs for cell research and acquisition. PSS can provide half frame timing, SS can provide CP length and frame timing. PSS and SSS can provide the cell's identity. The PBCH carries some basic system information, such as bandwidth of the downlink system, timing information within the radio frame, periodicity of the
Petition 870190093896, of 9/19/2019, p. 33/73
29/43 SS burst set, system frame number, etc. SS blocks can be arranged in bursts of SS to support beam scanning. Other system information, such as remaining minimum system information (RMSI), system information blocks (STBs), other system information (OSI) can be transmitted on a physical shared downlink channel (PDSCH) in certain subframes.
[0069] In some circumstances, two or more subordinate entities (for example, UEs) can communicate with each other using side link signals. The real applications of such side-link communications may include public security, proximity services, EU-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (loE) communications, loT communications, mission-critical mesh and / or various other suitable applications. Generally, a side link signal can refer to a signal communicated from a subordinate entity (e.g., a UE) to another subordinate entity (e.g., another UE) without relaying that communication through the scheduling entity (e.g., EU or BS), although the scheduling entity can be used for scheduling and / or control purposes. In some instances, side link signals can be communicated using a licensed spectrum (unlike wireless local area networks, which typically use an unlicensed spectrum).
EXAMPLE SEI AND SLOT AGGREGATION LEVEL INDICATION IN GC PDCCH AND SEI CONFLICT HANDLING [0070] In NR, slots can have several
Petition 870190093896, of 9/19/2019, p. 34/73
30/43 settings. For example, based on the slot format, the symbols in the slot can have different configurations, such as downlink, uplink, empty (e.g., empty data region), reserved (e.g., forced batch transmission (DTX) or batch reception ( DRX) only in the data region, only control or data and control, etc.), etc.
[0071] The base station (BS), such as a BS 110 on the wireless communication network 100 illustrated in FIG. 1, can send information to a user device (UE) (for example, a UE 120) regarding the slot format in a downlink control region. For example, BS can send information to the UE on a downlink control channel, such as the common group (GC) downlink physical control channel (PDCCH). The GC PDCCH refers to a channel, for example, a PDCCH, which carries information, such as a slot format indicator (SEI) through common downlink control information (DCI), intended for a group of UEs. UEs can be radio resource control (RRC) configured to decode the GC PDCCH. An SEI indicates the format of a current slot and / or future slot (s). The UE can use the information in the SEI to determine (identify, derive, etc.) which symbols in a slot are for uplink or downlink, or other purposes (for example, as a side link, blank or reserved).
[0072] In NR, slots can be added. The number of aggregated slots is based on the aggregation level of the slot. For slot aggregation, it may be desirable to include additional information, such as format information for various slots (current and future slots). FIG. 7
Petition 870190093896, of 9/19/2019, p. 35/73
31/43 illustrates an aggregate slot 700 that has control regions (uplink and / or downlink) in the middle. In the aggregate slot 700 shown in FIG. 7, each of slots 702, 704, and 706 has a downlink control region at the beginning and an uplink control region at the end. Thus, SFI 703, 705, 707 can be shipped in the downlink control region of each slot 702, 704, 706, respectively. However, in some cases with slot aggregation, there is only one downlink control region at the beginning of the aggregate slot. As shown in FIG. 8, the aggregate slot 800 has a downlink control region in the first 802 slot, into which SFI 803 can be sent, and an uplink control region at the end of slot 806 and with no control regions in the middle of slot 804. Thus , special handling may be desirable to indicate the format of the aggregated slots.
[0073] In addition, as described in more detail below, SFI may conflict with other scheduled transmissions, such as those scheduled by a concession (uplink and / or downlink) in downlink control information (DCI), ACK / timing NACK (for example, timing to provide ACK / NACK feedback or a retransmission to HARQ) and / or periodic signaling (uplink or downlink). For example, SFI may indicate certain symbols such as uplink, downlink, empty or reserved, while a scheduled transmission for that symbol may be in the other direction. Therefore, SFI conflict handling / resolution techniques are also desirable.
[0074] Aspects of this disclosure provide techniques and devices for SFI and indication of the
Petition 870190093896, of 9/19/2019, p. 36/73
32/43 level of aggregation in the downlink control channel, as well as techniques (for example, Rules) to deal with conflicts between SFI and other signaling.
[0075] FIG. 9 is an example of a flow diagram illustrating the operations of 900 for SFI and indication of slot aggregation, in accordance with certain aspects of the present disclosure. Operations 900 can be performed, for example, by a BS (for example, such as a BS 110). 900 operations can begin, at 900, by determining a slot aggregation level and a format of the aggregated slots. In 904, BS sends a downlink control channel (for example, GC PDCCH) including an SFI indicating the shape of the aggregate slot and an indication of the level of slot aggregation.
[0076] FIG. 10 is an example of a flow diagram illustrating operations 1000 to determine an aggregated slot format, in accordance with certain aspects of the present disclosure. Operations 1000 can be performed, for example, by a UE (for example, such as a UE 120). Operations 1000 can be complementary operations by the UE to operations 900 performed by BS. Operations 1000 can start, in 1002, receiving the downlink control channel, including the SFI and the indication of the aggregation level of the slot. In 1004, the UE determines a current slot format (for example, it determines a direction to be applied to the symbols in the slot) based on the received SFI and the aggregation level of the slot. In aspects, the UE can determine the format of one or more future slots also based on the received SFI and the slot aggregation level. For example, the UE can determine the format of each
Petition 870190093896, of 9/19/2019, p. 37/73
33/43 one of the aggregate slots.
[0077] According to certain aspects, in the case that the aggregate slot has no control regions in the middle, for example, as shown in FIG. 8, then it may be desirable to include additional information in the downlink control channel (for example, in the GC PDCCH) in addition to the information in the SFI. For example, the aggregation level of the slot (for example, which indicates the number of aggregate slots) can be indicated in the downlink control channel (for example, in separate fields) at the beginning of the aggregate slot.
[0078] The UE receiving the downlink control channel may be able to use the information, including the SFI and the aggregation level, to determine (derive, identify, etc.) the shape of a current slot and / or slots futures such as symbols in the slot are for uplink and which symbols are for downlink. In aspects, the UE can ignore PDCCH decoding during the aggregate slots.
Example of handling SFI conflicts with other signals [0079] It may be desirable that information in SFI does not conflict with other signals, such as downlink control (DCI) information (for example, uplink leases, downlink leases and / or ACK / NACK timing) and pre-configured periodic uplink or downlink transmissions. There may be false detection with the GC PDCCH. For example, DCI can schedule a uplink or downlink transmission (or there may be a periodic uplink or downlink transmission) on a symbol, while SFI can indicate that symbol as no uplink (for example, downlink, reserved, empty, etc. .) or without
Petition 870190093896, of 9/19/2019, p. 38/73
34/43 downlink (for example, uplink, reserved, empty, etc.).
[0080] In an example scenario, the information in the SFI may indicate that one or more symbols are for uplink or downlink (or reserved, empty, etc.); however, a lease on the DCI and / or the ACK / NACK timing information on the DCI may schedule a UE to transmit or receive a transmission in the other direction on one of these symbols. There may also be a detection error in the DCI or SFI. Thus, SFI and DCI may conflict. If the UE determines that there is a conflict, the UE can prioritize both information in the SFI and information in the DCI. In one example, the UE always gives priority to information in the DCI. Alternatively, the UE can only give priority to a DCI received in the current slot, but if the DCI is received in a previous slot, then the UE can give priority to the information in the SFI.
[0081] In another example scenario, information in the SFI may conflict with periodic signaling. In the downlink, the periodic signaling may include signaling as reference signals of the channel status information (CSI-RS), synchronization signals (primary synchronization signal (PSS), secondary synchronization signal (SSS) and / or broadcast channel (PBCH)) and / or semi-persistent scheduling (SPS). In uplink, periodic signaling can include polling reference signal (SRS), physical uplink control channel (PUCCH) with channel status information (CSI) and / or SPS. Information in the SFI may indicate that one or more symbols are for uplink or downlink (or reserved, empty, etc.); while some periodic signal may occur
Petition 870190093896, of 9/19/2019, p. 39/73
35/43 in the other directions on these symbols. Thus, the SFI and the periodic signaling conflict. If the UE determines that there is a conflict, the UE can prioritize both information in the SFI and periodic signaling.
[0082] In an example, if there is DCI information for the symbol, the UE will always give priority to the information in the DCI. Alternatively, if there is DCI information for the symbol, the UE can only give priority to the information in the DCI if the DCI is received in the current slot - not for the DCI received in a previous slot. If the DCI is not present (or does not include a concession for that symbol), and if the SFI indicates a direction, the UE will give priority to the information in the SFI. If the DCI is not present and the SFI indicates empty, the UE will give priority to periodic signaling. And if DCI is not present and SFI indicates reserved, the UE will give priority to SFI.
[0083] Giving priority to information in the DCI may include the transmission or monitoring of a transmission based on an uplink or downlink concession in the DCI (for example, ignoring the link direction indicated by the SFI) or based on the ACK / NACK timing in the DCI. Prioritizing SFI may include ignoring the uplink or downlink grant or ACK / NACK timing at DCI if it conflicts with information in SFI. Giving priority to periodic signaling may include the transmission or monitoring of periodic signaling, regardless of information in the SFI or DCI.
[0084] The methods disclosed herein comprise one or more steps or actions to achieve the described method. The steps and / or actions of the method can be exchanged with each other without
Petition 870190093896, of 9/19/2019, p. 40/73
36/43 depart from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims.
[0085] As used here, a sentence referring to at least one of a list of items refers to any combination of those items, including unique members. As an example, at least one of: a, b or c is intended to cover a, b, c, ab, ac, bc and abc, as well as any combination with multiples of the same element (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other order of a, bec).
[0086] As used here, the term determine encompasses a wide variety of actions. For example, determining may include calculating, computing, processing, deriving, investigating, querying (for example, querying a table, database or other data structure), ascertaining and the like. In addition, determining may include receiving (for example, receiving information), accessing (for example, accessing data in a memory) and the like. In addition, determining may include resolving, selecting, choosing, establishing and the like.
[0087] The previous description is provided to allow any expert in the art to practice the various aspects described here. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects here
Petition 870190093896, of 9/19/2019, p. 41/73
37/43 shown, but must be in accordance with the complete scope consistent with the claims of language, in which the reference to an element in the singular does not mean one and only one unless specifically so stated, but one or more. Unless otherwise indicated, the term some refers to one or more. All structural and functional equivalents to the elements of the various aspects described throughout this description that are known or are subsequently known to those skilled in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. In addition, nothing disclosed here is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. No claim element shall be interpreted under the provisions of 35 USC §112, sixth paragraph, unless the element is expressly recited using the expression means for or, in the case of a method claim, the element is recited using the phrase step for.
[0088] The various operations of the methods described above can be performed by any suitable means capable of carrying out the corresponding functions. The means may include various hardware and / or software components and / or module (s), including, but not limited to, a circuit, an application-specific integrated circuit (ASIC) or processor. Generally, where there are operations illustrated in figures, these operations can have equivalent counterpart components plus functions with similar numbering.
[0089] The various illustrative logic blocks, modules and circuits described in connection with this
Petition 870190093896, of 9/19/2019, p. 42/73
38/43 disclosure can be implemented or carried out with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate matrix (FPGA) or other programmable logic device (PLD), discrete port or transistor logic, discrete hardware components or any combination of these designed to perform the functions described here. A general purpose processor can be a microprocessor, but, alternatively, the processor can be any commercially available processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other configuration of this type.
[0090] If implemented in hardware, an example of a hardware configuration can comprise a processing system in a wireless node. The processing system can be implemented with a bus architecture. The bus can include any number of interconnected buses and bridges, depending on the specific application of the processing system and the general design restrictions. The bus can join multiple circuits, including a processor, machine-readable media and a bus interface. The bus interface can be used to connect a network adapter, among other things, to the processing system via the bus. The network adapter can be used to implement the
Petition 870190093896, of 9/19/2019, p. 43/73
39/43 PHY layer signal processing. In the case of a user terminal 120 (see FIG. 1), a user interface (for example, keyboard, display, mouse, joystick, etc.) can also be connected to the bus. The bus can also join several other circuits, such as timing sources, peripherals, voltage regulators, power management circuits and the like, which are well known in the art and therefore will not be described further. The processor can be implemented with one or more general purpose and / or special processors. Examples include microprocessors, microcontrollers, DSP processors and other circuits that can run software. Those skilled in the art will recognize the best way to implement the functionality described for the processing system, depending on the particular application and the general design restrictions imposed on the overall system.
[0091] If implemented in the software, the functions can be stored or transmitted as one or more instructions or code in a computer-readable medium. The software must be interpreted broadly to mean instructions, data or any combination thereof, whether called software, firmware, middleware, microcode, hardware description language or others. Computer-readable media includes computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. The processor may be responsible for managing overall processing and the bus, including running
Petition 870190093896, of 9/19/2019, p. 44/73
40/43 of software modules stored on machine-readable storage media. A computer-readable storage medium can be coupled to a processor in such a way that the processor can read information and write information to the storage medium. Alternatively, the storage medium can be an integral part of the processor. As an example, the machine-readable medium may include a transmission line, a data wave modulated carrier and / or a computer-readable storage medium with instructions stored on it separate from the wireless node, all of which can be accessed by the processor through the bus interface. Alternatively, or in addition, machine-readable media, or any part of it, can be integrated into the processor, just as the case may be with general log and / or cache files. Examples of machine-readable storage media may include, for example, RAM (random access memory), flash memory, ROM (read-only memory), FROM (programmable read-only memory), EPROM (erasable programmable read-only memory) , EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard disks or any other suitable storage medium, or any combination thereof. Machine-readable media can be incorporated into a computer program product.
[0092] A software module can comprise a single instruction or many instructions and can be distributed in several different code segments, between different programs and in various storage media. The media
Petition 870190093896, of 9/19/2019, p. 45/73
41/43 computer readable can include several software modules. The software modules include instructions that, when executed by a device such as a processor, cause the processing system to perform various functions. The software modules can include a transmission module and a receiver module. Each software module can reside on a single storage device or be distributed across multiple storage devices. For example, a software module can be loaded into RAM from a hard drive when a trigger event occurs. During the execution of the software module, the processor can load some of the instructions in the cache to increase the access speed. One or more lines of cache can then be loaded into a general log file for execution by the processor. When referring to the functionality of a software module below, it will be understood that such functionality is implemented by the processor when executing instructions for that software module.
[0093] Furthermore, any connection is properly called computer-readable media. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared (IR), radio
and microwave, so the cable coaxial, cable of fiber optics, twisted pair, DSL or technologies without thread, as infrared, radio and microwave, They are include in the definition of media. Disco (disk) and disco (disc) , as used here, include disco compact (CD) , disco laser,
Petition 870190093896, of 9/19/2019, p. 46/73
42/43 optical disc, digital versatile disc (DVD), floppy disk and Blu-ray® disc, where discs (disks) generally reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Thus, in some respects, computer-readable media may comprise non-transient, computer-readable media (for example, tangible media). In addition, for other aspects, computer-readable media may comprise computer-readable transient media (for example, a signal). Combinations of the above items should also be included in the scope of computer-readable media.
[0094] Thus, certain aspects may comprise a computer program product to perform the operations presented here. For example, such a computer program product may comprise a computer-readable medium with stored (and / or encoded) instructions, the instructions being executable by one or more processors to perform the operations described herein.
[0095] In addition, it should be appreciated that the modules and / or other appropriate means to carry out the methods and techniques described herein can be downloaded and / or otherwise obtained by a user terminal and / or base station, as applicable. For example, such a device can be coupled to a server to facilitate the transfer of means to carry out the methods described herein. Alternatively, various methods described herein can be provided via storage media (for example, RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.), such as a user terminal and / or base station can get the various
Petition 870190093896, of 9/19/2019, p. 47/73
43/43 methods when coupling or providing the storage media to the device. In addition, any other suitable technique for providing the methods and techniques described herein for a device can be used.
[0096] It should be understood that the claims are not limited to the precise configuration and components illustrated above. Various modifications, alterations and variations can be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

权利要求:
Claims (11)
[1]
1. A method for wireless communications by a user device (UE), comprising:
receive a downlink control channel carrying a slot format indicator (SFI) that indicates whether one or more symbols in at least one current slot are for uplink or downlink;
determine a scheduled transmission that conflicts with SFI;
determine a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission; and transmitting or receiving on one or more symbols based on the given direction for one or more symbols.
[2]
2. Method according to claim 1, wherein the downlink control channel comprises a common group physical downlink control channel (GC PDCCH).
[3]
A method according to claim 1, wherein:
the transmission is scheduled by received downlink control information (DCI); and determining the direction of one or more symbols comprising giving priority to the direction of transmission scheduled by DCI.
[4]
A method according to claim 3, wherein:
transmission is scheduled by at least one lease in the DCI or in the ACK / NACK timing information in the UE's DCI schedule to transmit in a symbol indicated as unplugged by the SFI or by scheduling the UE for
Petition 870190093896, of 9/19/2019, p. 49/73
2/11 receive in a symbol indicated as no downlink by the SFI.
[5]
5. Method according to claim 1, wherein:
the transmission is scheduled by received downlink control information (DCI); and determining the direction of one or more symbols comprises:
to give priority to SFI whether DCI was received in one slot previousto give andpriority to DCI whether DCI was received at the slot current.6. Method, of wake up with claim 1, in what: the transmission scheduled comprises at least one
a periodic downlink signal in one of the symbols indicated as uplink, reserved or empty by SFI or a periodic uplink signal in one of the symbols indicated as downlink, reserved, or empty by SFI.
A method according to claim 6, wherein the periodic signal comprises at least one of:
a channel status information reference signal (CSI-RS), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH), semi-persistent scheduling (SPS), a polling reference signal (SRS) or a physical uplink control channel (PUCCH) that carries channel status information (CSI).
8. The method of claim 6, further comprising:
receive downlink control information (DCI)
Petition 870190093896, of 9/19/2019, p. 50/73
3/11 containing a concession for the symbol scheduled for the periodic signal, in which determining the direction of one or more symbols comprises determining the direction of the symbol based on the concession in the DCI.
9. The method of claim 6, wherein determining the direction of one or more symbols comprises determining the direction of the symbol based on the SFI if the SFI indicates a direction for that symbol.
10. The method of claim 6, wherein determining the direction of one or more symbols comprises determining the direction of the symbol based on the periodic signal if the SFI indicates the symbol as empty.
11. The method of claim 6, wherein determining the direction of one or more symbols comprises determining the direction of the symbol based on the SFI if the SFI indicates the symbol as reserved.
12. Apparatus for wireless communications, comprising:
means for receiving a downlink control channel carrying a slot format indicator (SFI) that indicates whether one or more symbols in at least one current slot are for uplink or downlink;
means to determine a scheduled transmission that conflicts with SFI;
means for determining a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission; and means for transmitting or receiving one or more symbols based on the given direction for one or more
Petition 870190093896, of 9/19/2019, p. 51/73
4/11 symbols.
13. Apparatus according to claim 12, in that the downlink control channel comprises a channel in physical control of common group downlink (GC PDCCH).14. Apparatus according to claim 12, in what: the transmission is scheduled by information from control downlink received (DCI); andmeans to determine the direction of one or more symbols that understand ways to prioritize
direction of transmission scheduled by DCI.
Apparatus according to claim 14, wherein:
the transmission is scheduled for at least one lease in the DCI or in the ACK / NACK timing information in the UE's DCI schedule to transmit on a symbol indicated as unplugged by the SFI or schedule of the UE to receive on a symbol indicated as no downlink by the SFI.
16. Apparatus according to claim 12, wherein:
the transmission is scheduled by received downlink control information (DCI); and
means for determine the direction in one or more symbols comprise:means for give priority to SFI if The DCI for received in a previous slot, andmeans to prioritize DCI if The DCI for
received in the current slot.
17. Apparatus according to claim 12, wherein:
Petition 870190093896, of 9/19/2019, p. 52/73
5/11 the scheduled transmission comprises at least one periodic downlink signal in one of the symbols indicated as uplink, reserved or empty by SFI or a periodic uplink signal in one of the symbols indicated as downlink, reserved, or empty by SFI.
Apparatus according to claim 17, wherein the periodic signal comprises at least one of:
a channel status information reference signal (CSI-RS), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH), semi-persistent scheduling (SPS), a polling reference signal (SRS) or a physical uplink control channel (PUCCH) that carries channel status information (CSI).
19. Apparatus according to claim 17, further comprising:
means for receiving downlink control information (DCI) containing a concession for the symbol scheduled for the periodic signal, wherein means for determining the direction of one or more symbols comprises means for determining the direction of the symbol based on the concession in the DCI.
An apparatus according to claim 17, wherein means for determining the direction of one or more symbols comprises means for determining the direction of the symbol based on the SFI if the SFI indicates a direction for that symbol.
21. Apparatus according to claim 17, wherein means for determining the direction of one or more symbols comprise means for determining the direction of the
Petition 870190093896, of 9/19/2019, p. 53/73
[6]
6/11 symbol based on the periodic signal if the SFI indicates ο symbol as empty.
An apparatus according to claim 17, wherein the means for determining the direction of one or more symbols comprises means for determining the direction of the symbol based on the SFI if the SFI indicates the symbol as reserved.
23. Apparatus for wireless communications, comprising:
a transceiver configured to receive a downlink control channel carrying a slot format indicator (SFI) that indicates whether one or more symbols in at least one current slot are for uplink or downlink; and at least one processor attached to a memory and configured to:
determine a scheduled transmission that conflicts with SFI; and determining a direction of one or more symbols such as uplink or downlink based on the received SFI or based on a direction of the scheduled transmission; wherein the transceiver is further configured to transmit or receive on one or more symbols based on the direction determined for one or more symbols.
24. Apparatus according to claim 23, wherein the downlink control channel comprises a common group physical downlink control channel (GC PDCCH).
25. Apparatus according to claim 23, wherein:
the transmission is scheduled by received downlink control information (DCI); and
Petition 870190093896, of 9/19/2019, p. 54/73
[7]
7/11 at least one processor is configured to determine the direction of one or more symbols to give priority to the transmission direction scheduled by the DCI.
26. Apparatus according to claim 25, wherein:
the transmission is scheduled for at least one lease in the DCI or in the ACK / NACK timing information in the UE's DCI schedule to transmit on a symbol indicated as unplugged by the SFI or schedule of the UE to receive on a symbol indicated as no downlink by the SFI.
27. Apparatus according to claim 23, wherein:
the transmission is scheduled by received downlink control information (DCI); and at least one processor is configured to determine the direction of one or more symbols by:
give priority to the SFI if the DCI is received in a previous slot, and to give priority to the DCI if the DCI is received in the current slot.
28. Apparatus according to claim 23, wherein:
the scheduled transmission comprises at least one periodic downlink signal in one of the symbols indicated as uplink, reserved or empty by SFI or a periodic uplink signal in one of the symbols indicated as downlink, reserved, or empty by SFI.
29. The apparatus of claim 28, wherein the periodic signal comprises at least one of:
a status information reference signal
Petition 870190093896, of 9/19/2019, p. 55/73
[8]
8/11 channel (CSI-RS), a primary sync signal (PSS), a secondary sync signal (SSS), a physical broadcast channel (PBCH), semi-persistent scheduling (SPS), a poll reference signal ( SRS) or a physical uplink control channel (PUCCH) that carries channel status information (CSI).
30. Apparatus according to claim 28, wherein:
the transceiver is configured to receive downlink control information (DCI) containing a lease for the symbol scheduled for the periodic signal, in which at least one processor is configured to determine the direction of the symbol based on the lease in the DCI.
31. Apparatus according to claim 28, wherein at least one processor is configured to determine the direction of one or more symbols, determining the direction of the symbol based on the SFI, if the SFI indicates a direction for that symbol.
32. Apparatus according to claim 28, wherein at least one processor is configured to determine the direction of one or more symbols, determining the
direction symbol with based on signal periodic if the SFI indicateon what the symbol as empty.33. Apparatus according to the claim at least one processor is configured 28,for
determine the direction of one or more symbols by determining the direction of the symbol based on SFI if SFI indicates the symbol as reserved.
Petition 870190093896, of 9/19/2019, p. 56/73
[9]
9/11
34. Method for wireless communications by a user equipment (UE), comprising:
receiving a downlink control channel including a slot format indicator (SEI) and an indication of a slot aggregation level; and determining a current slot format based on the SEI received and the aggregation level of the slot.
35. The method of claim 34, further comprising:
determine a format of one or more future slots based on the SEI received and the level of slot aggregation.
36. The method of claim 34, wherein the downlink control channel comprises a common group physical downlink control channel (GC PDCCH).
37. Method according to claim 34, wherein the SEI includes information related to the format of the aggregated slots including the symbols that are for uplink and the symbols that are for downlink.
38. Method, according to claim 34, in which the downlink control channel is received only in the first slot of the aggregated slots.
39. The method of claim 34, further comprising:
determine if information in the SEI conflicts with the information in the downlink control information (DCI); and prioritize information in the DCI.
40. The method of claim 34, further comprising:
determine whether the information in the CES comes into
Petition 870190093896, of 9/19/2019, p. 57/73
[10]
10/11 conflict with the information in the downlink control information (DCI); and prioritize the information in the SFI if the DCI is received in an earlier slot.
41. The method of claim 34, further comprising:
determining whether a transmission direction for a symbol indicated by the SFI for a symbol conflicts with a periodic signaling transmission direction to be transmitted on that symbol; and determine a transmission direction to apply the symbol.
42. Method according to claim 41, in which the transmission direction to be applied is determined based on downlink control information (DCI) if a DCI is received with a grant for that symbol.
43. The method of claim 42, wherein the transmission direction to be applied is determined based on the SFI if a DCI with a grant for that symbol is not received.
44. Method according to claim 42, wherein the transmission direction to be applied is determined based on periodic signaling if a DCI with a concession for that symbol is not received and the SFI is empty.
45. Method according to claim 41, in which the transmission direction to be applied is determined based on downlink control information (DCI) if a DCI is received in a current slot with a concession for that symbol.
46. Method according to claim 45, in
Petition 870190093896, of 9/19/2019, p. 58/73
[11]
11/11 that the transmission direction to apply is determined based on the SFI if a DCI with a grant for that symbol is not received in the current slot.
47. Method according to claim 45, in which the transmission direction to be applied is determined based on periodic signaling if a DCI with a concession for that symbol is not received in the current slot and the SFI is empty.
48. A method for wireless communications by a base station (BS), comprising:
determine a slot aggregation level and a format of the aggregated slots; and send a downlink control channel including a slot format indicator (SFI) indicating the shape of the aggregate slot and an indication of the level of aggregation of the slot.
49. The method of claim 48, wherein the downlink control channel comprises a common group physical downlink control channel (GC PDCCH).
50. The method of claim 48, wherein the SFI includes information related to the format of the aggregated slots, including symbols that are for uplink and symbols that are for downlink.
51. Method, according to claim 48, in which the downlink control channel is sent only in the first slot of the aggregated slots.

类似技术:

---

公开号 | 公开日 | 专利标题

---

BR112019019552A2|2020-04-22|slot format indicator | and slot aggregation level indication on common group pdcch and sfi conflict handling

---

BR112019020123A2|2020-05-05|set of control features for single carrier waveform

---

BR112019009472A2|2019-07-30|two-step random access channel | procedure in millimeter waves |

---

US10736077B2|2020-08-04|Configuration of remaining system information transmission window

---

BR112020009536A2|2020-11-03|designs for set of control resources | of remaining minimum system information | and coreset of other system information |

---

BR112020014468A2|2020-12-01|uci transmission for overlapping uplink resource assignments with repetition

---

BR112020015047A2|2020-12-08|ALMOST-LOCALIZATION ASSUMPTIONS FOR APERIODIC CHANNEL STATUS REFERENCE SIGNAGE TRIGGERS

---

US10945254B2|2021-03-09|Paging design with short message indicator

---

BR112019023738A2|2020-05-26|RADIO LINK MONITORING WITH SUB-BANDS AND INTERFERENCE MEASUREMENTS

---

BR112020000008A2|2020-07-21|generation of demodulation reference signal sequence | and resource mapping for physical broadcast channel | transmissions

---

BR112020007411A2|2020-10-27|aperiodic tracking reference signal

---

US20190349917A1|2019-11-14|Uplink control information multiplexing on physical uplink shared channels in new radio

---

KR20210007967A|2021-01-20|Signaling of the control resource set |

---

US10863415B2|2020-12-08|Unified access control

---

US20180331875A1|2018-11-15|Multiplexing paging signals with synchronization signals in new radio

---

BR112020009623A2|2020-11-03|efficient data programming with supplementary uplink carrier

---

BR112020000884A2|2020-07-21|multiplex demodulation reference signals and synchronization signals on a new radio

---

US11259329B2|2022-02-22|Prioritized random access procedure

---

US10667238B2|2020-05-26|Multiple paging radio network temporary identifiers | to reduce page collisions

---

US10609661B2|2020-03-31|Timing indication through DMRS/PBCH in different modes

---

BR112019025757A2|2020-06-23|QCL INDICATION BY EU BEAM BASED LABEL

---

US20210014874A1|2021-01-14|Data scheduling in uplink burst

---

US10993252B2|2021-04-27|Scheduling request multiplexing based on reliability and latency objectives

---

US11044757B2|2021-06-22|Carrier-dependent random access channel | response search space

---

US10939282B2|2021-03-02|Default value selection for medium access control-control element | based parameter value selection

同族专利:

---

公开号 | 公开日

---

US11259297B2|2022-02-22|

---

TW201840157A|2018-11-01|

---

US20200077393A1|2020-03-05|

---

EP3602927B1|2021-01-27|

---

WO2018175768A1|2018-09-27|

---

CN110431798A|2019-11-08|

---

EP3713146A1|2020-09-23|

---

US10506586B2|2019-12-10|

---

US20180279304A1|2018-09-27|

---

ES2867584T3|2021-10-20|

---

CA3053482A1|2018-09-27|

---

JP2020511851A|2020-04-16|

---

EP3602927A1|2020-02-05|

---

TWI735763B|2021-08-11|

---

KR20190127906A|2019-11-13|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

ITMI20010721A1|2001-04-04|2002-10-04|Siemens Inf & Comm Networks|METHOD TO OFFER PACKAGE SERVICES ON RADIO RESOURCES SHARED BY MULTIPLE USERS IN A TDD-CDMA SYSTEM|

---

TWI643484B|2008-01-07|2018-12-01|奧普蒂斯蜂窩技術有限責任公司|Method for scheduling distributed virtual resource blocks|

---

CN101252511A|2008-01-25|2008-08-27|东南大学|Method for optimizing multi-jumping wireless sensor network dynamic proportion equitable access|

---

US8447236B2|2008-05-15|2013-05-21|Qualcomm Incorporated|Spatial interference mitigation schemes for wireless communication|

---

US20110299428A1|2010-05-06|2011-12-08|Sanford, L.P.|Dynamic Multiple Access Protocol for Use in an Audience Response System|

---

CN102065054B|2011-01-06|2014-06-04|大唐移动通信设备有限公司|Scrambling transmission method and device|

---

EP2901599A1|2012-09-26|2015-08-05|Interdigital Patent Holdings, Inc.|Methods for dynamic tdd uplink/downlink configuration|

---

EP3280087B1|2015-04-03|2020-01-29|LG Electronics Inc.|Method for transmitting and receiving signal in wireless communication system and device therefor|

---

CN107852319B|2015-04-22|2020-12-29|苹果公司|Transmission design for wireless access technology|

---

CN106162915B|2015-04-23|2019-04-09|中国科学院沈阳自动化研究所|High concurrent radio multimedia sensor network equity dispatching method based on recursive backtracking|

---

US11095404B2|2015-07-31|2021-08-17|Qualcomm Incorporated|Multiplexing downlink control information of same aggregation level by coding together|

---

WO2017034607A1|2015-08-27|2017-03-02|Intel IP Corporation|Inter-beam mobility control in mimo communication systems|

---

US10327219B2|2015-09-04|2019-06-18|Telefonaktiebolaget L M Ericsson |Timing based UE positioning in shared cell environment|

---

US10554329B2|2015-09-04|2020-02-04|Apple Inc.|Grant-less PUSCH uplink|

---

WO2018021834A1|2016-07-29|2018-02-01|Samsung Electronics Co., Ltd.|Method and apparatus for handling collisions in next generation communication system|

---

RU2735954C1|2017-03-02|2020-11-11|Нтт Докомо, Инк.|Terminal and method of radio communication|

---

US10506586B2|2017-03-24|2019-12-10|Qualcomm Incorporated|Slot format indicator and slot aggregation level indication in group common PDCCH and SFI conflict handling|CN108282315B|2017-01-06|2020-11-10|华为技术有限公司|Time slot type indicating method, time slot type determining method and time slot type determining device|

---

US10506586B2|2017-03-24|2019-12-10|Qualcomm Incorporated|Slot format indicatorand slot aggregation level indication in group common PDCCH and SFI conflict handling|

---

US10659151B2|2017-04-21|2020-05-19|Apple Inc.|Apparatus, system and method for utilizing a flexible slot format indicator|

---

JP6816263B2|2017-05-03|2021-01-20|エルジー エレクトロニクス インコーポレイティド|Methods for transmitting and receiving signals in wireless communication systems and devices for that purpose|

---

KR20190012601A|2017-07-28|2019-02-11|삼성전자주식회사|Method and apparatus for managing hybrid automatic repeat request for slot aggregation|

---

EP3442155B1|2017-08-10|2019-10-16|ASUSTek Computer Inc.|Method and apparatus for handling sficollision in a wireless communication system|

---

US10820338B2|2017-09-08|2020-10-27|Sharp Kabushiki Kaisha|User equipments, base stations and methods for RNTI-based PDSCH downlink slot aggregation|

---

US10938635B2|2017-09-15|2021-03-02|Huawei Technologies Co., Ltd.|Systems and methods for configuring slot formats with multiple switching points per slot|

---

JP6896941B2|2017-11-02|2021-06-30|ノキア テクノロジーズ オサケユイチア|Slot format instructions to UE groups in base station cells|

---

AU2017445273A1|2017-12-26|2020-08-13|Guangdong Oppo Mobile Telecommunications Corp., Ltd.|Data transmission method and apparatus, and computer storage medium|

---

EP3687251A4|2018-02-14|2020-12-16|LG Electronics Inc.|Method for determining slot format in wireless communication system and apparatus therefor|

---

US10880914B2|2018-02-26|2020-12-29|Qualcomm Incorporated|Grant free uplink transmission techniques|

---

ES2882594T3|2018-03-28|2021-12-02|Asustek Comp Inc|Method and apparatus for the determination of the interval format in a wireless communication system|

---

CN110972266A|2018-09-28|2020-04-07|成都华为技术有限公司|Method and communication device for configuring time slot format|

---

US10757700B2|2018-10-07|2020-08-25|At&T Intellectual Property I, L.P.|Frame structure coordination in wireless communication systems with integrated access and backhaul links in advanced networks|

---

WO2020145459A1|2019-01-10|2020-07-16|엘지전자 주식회사|Method for operating terminal and base station in wireless communication system supporting unlicensed band, and apparatus supporting same|

---

CN111263450A|2019-01-11|2020-06-09|维沃移动通信有限公司|PDCCH monitoring method, device, terminal, base station and storage medium|

---

CN113424622A|2019-03-22|2021-09-21|华为技术有限公司|Method for determining resource attribute of OFDM symbol and related equipment thereof|

---

WO2021022568A1|2019-08-08|2021-02-11|Oppo广东移动通信有限公司|Wireless communication method and device|

法律状态:
2021-10-19| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

---

申请号 | 申请日 | 专利标题

---

US201762476634P| true| 2017-03-24|2017-03-24|

---

US15/927,716|US10506586B2|2017-03-24|2018-03-21|Slot format indicatorand slot aggregation level indication in group common PDCCH and SFI conflict handling|

---

PCT/US2018/023833|WO2018175768A1|2017-03-24|2018-03-22|Slot format indicatorand slot aggregation level indication in group common pdcch and sfi conflict handling|

---