• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    systems and methods for activating or deactivating the semi-persistent polling reference signal feature (sp srs) are disclosed. in some embodiments, a method of operating a wireless device on a cellular communications network comprises receiving, from a network node, a control element (ce) for access control to the medium (mac). mac ce comprises an indication of a set of sp srs resources to be activated or deactivated and information indicating a spatial relationship to the set of sp srs resources to be activated or deactivated. in this way, a feature set activation or deactivation from mac ce to sp srs is provided in a way that provides spatial relation information in an efficient and flexible manner.
    公开号:BR112020016627A2
    申请号:R112020016627-8
    申请日:2019-01-25
    公开日:2020-12-15
    发明作者:Helka-Liina Määttänen；Mats Folke；Sebastian Faxér
    申请人:Telefonaktiebolaget Lm Ericsson (Publ)；
    IPC主号:
    专利说明:

    [001] [001] This application claims the benefit of provisional patent application serial number 62 / 631,243, filed on February 15, 2018, the disclosure of which is hereby incorporated into this disclosure by reference in its entirety. Technical Field
    [002] [002] The present disclosure refers to a wireless communication system and, more specifically, sounding reference signals (SRSs) in a wireless communication system. Background
    [003] [003] It is expected that large parts of future Novo Rádio (NR) networks will be implemented for Time Division Duplexing (TDD). A benefit of TDD, compared to Frequency Division Duplexing (FDD), is that TDD allows for beam formation based on reciprocity, which can be applied to both, at the Transmission and Receiving Point (TRP) (ie is, for downlink) and the User Equipment (UE) device (ie, for uplink). For downlink transmission based on reciprocity, the UE is expected to transmit Polling Reference Signals (SRSs), which the TRP will use to estimate the channel between the TRP and the UE. The channel estimate will then be used in the TRP to find ideal pre-coding weights for the forthcoming downlink transmission, for example, using the Eigen beamform. Similarly, the Channel State Information Reference Signal (CSI-RS) is expected to be used as a polling signal for uplink transmissions based on reciprocity. It was agreed in the NR that a TRP can indicate an assumption of spatial relationship for a previously transmitted downlink reference signal (for example, CSI-RS and Synchronization Signal Block (SSB)), as well as from an SRS that a UE can use when determining uplink precoding of an SRS resource. Uplink Transmission Based on Codebook
    [004] [004] Multi-antenna techniques can significantly increase data rates and the reliability of a wireless communication system. Performance is improved particularly if both the transmitter and the receiver are equipped with multiple antennas, which results in a Multiple Input and Multiple Output (MIMO) communication channel. Such systems and / or related techniques are commonly referred to as MIMO.
    [005] [005] The NR standard is currently specified. A core component in NR is the support for MIMO antenna implementations and MIMO-related techniques. The NR is expected to support uplink MIMO with spatial multiplexing of at least four layers using at least four antenna ports with channel-dependent pre-coding. The spatial multiplexing mode is designed for high data rates under favorable channel conditions. An illustration of the spatial multiplexing operation is provided in Figure 1 for the case where Multiplexing by Cyclic Prefix Orthogonal Frequency Division (CP-OFDM) is used on the uplink.
    [006] [006] As seen, the symbolic vector carrying information s is multiplied by a pre-coding matrix NT xr, which serves to distribute the transmission energy in a subspace of the NT dimensional vector space (corresponding to the NT antenna ports ). The pre-coding matrix is typically selected from a code book of possible pre-coding matrices and is typically indicated by means of a Pre-coding Matrix Indicator.
    [007] [007] The vector yn received NR x 1 for a certain TFRE in subcarrier n (or, alternatively, number n of TFRE data) is modeled as follows:
    权利要求:
    Claims (49)
    [1]
    1. A method of operating a wireless device (510) on a cellular communications network, comprising: receiving (1402), from a network node (560), an Access Control Element, CE, in the Middle, MAC, comprising: an indication of a set of semi-persistent poll reference signal resources to be enabled or disabled; and information indicating a spatial relationship to the set of semi-persistent poll reference signal resources to be enabled or disabled.
    [2]
    The method of claim 1 wherein the information indicating the spatial relationship comprises: an indication of a type of reference signal for which the spatial relationship is provided; and an identifier of a set of reference signal resources for the type of reference signal for which the spatial relationship is provided.
    [3]
    The method of claim 2 wherein indicating the reference signal type indicates that the reference signal type is a Channel State Information Reference Signal, CSI-RS, a Sync Signal Block, SSB or a Polling Reference Signal, SRS.
    [4]
    The method of claim 2 wherein the indication of the type of reference signal comprises two bits indicating the type of reference signal, wherein: a first state of the two bits indicates that the type of reference signal is a first type reference signal; a second state of the two bits indicates that the reference signal type is a second reference signal type; and a third state of the two bits indicates that the reference signal type is a third reference signal type.
    [5]
    The method of claim 4 wherein the first type of reference signal is a Channel State Information Reference Signal, CSI-RS, the second type of reference signal is a Sync Signal Block, SSB, and the third type of reference signal is a Polling Reference Signal, SRS.
    [6]
    The method of claim 2 wherein the MAC CE comprises: a first octet comprising the indication of the set of semi-persistent poll reference signal resources to be enabled or disabled; and a second octet comprising the indication of the type of reference signal for which the spatial relationship is provided and the identifier of the set of reference signal resources for the type of reference signal for which the spatial relationship is provided.
    [7]
    The method of claim 6 wherein: • if a first bit in the second octet is set to a first state: o the first bit serves as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Channel State Information Reference Signal, CSI-RS; and o the bits remaining in the second octet serve as the identifier of the set of reference signal resources for the CSI-RS; and • if the first bit in the second octet is set to a second state: o if a second bit in the second octet is set to a first state:
    ▪ the first bit and the second bit serve as the indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Synchronization signal block, SSB ; and ▪ the bits remaining in the second octet serve as the identifier of the set of reference signal resources for the SSB; and o if the second bit in the second octet is set to a second state: ▪ the first bit and the second bit serve as the indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Polling Reference Signal, SRS; and ▪ all but one of the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SRS.
    [8]
    The method of claim 6 wherein: a first bit in the second octet is set to a first state so that the first bit serves as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Channel State Information Reference Signal, CSI-RS; and the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the CSI-RS;
    [9]
    The method of claim 6 wherein: a first bit in the second octet is set to a second state; a second bit in the second octet is set to a first state so that the first bit and the second bit serve as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Synchronization signal block, SSB; and the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SSB.
    [10]
    The method of claim 6 wherein: a first bit in the second octet is set to a second state; a second bit in the second octet is set to a second state so that the first bit and the second bit serve as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Polling Reference Signal, SRS; and all but one of the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SRS.
    [11]
    The method of claim 1 wherein: if a first bit of an octet of the MAC CE is set to a first state, the remaining bits in the octet comprise a first set of fields; if the first bit of the octet is set to a second state and a second bit of the octet is set to a first state, the remaining bits in the octet comprise a second set of fields; and if the first bit of the octet is set to a second state and the second bit of the octet is set to a second state, the remaining bits in the octet comprise a third set of fields.
    [12]
    The method of claim 11 wherein the first set of fields comprises a field comprising bits that provide an identifier for a set of Channel State Information Reference Signal, CSI-RS, resources for which a spatial relationship is indicated.
    [13]
    The method of claim 11 or 12 wherein the second set of fields comprises a field comprising bits that provide an identifier for a set of Synchronization signal block resources, SSB, for which a spatial relationship is indicated.
    [14]
    The method of any one of claims 11 to 13 wherein the third set of fields comprises a field comprising bits that provide an identifier for a set of Polling Reference Signal, SRS, resources for which a spatial relationship is indicated .
    [15]
    The method of any one of claims 1 to 14 wherein the indication is an indication to activate the semi-persistent poll reference signal feature set and the method further comprises transmitting (1404) a poll reference signal to the set of semi-persistent polling reference signal features enabled.
    [16]
    16. A wireless device (510) for a cellular communications network, the wireless device (510) adapted to: receive, from a network node (560), an Access Control Element, CE, in the Middle, MAC, comprising: an indication of a set of semi-persistent poll reference signal resources to be enabled or disabled; and information indicating a spatial relationship to the set of semi-persistent poll reference signal resources to be enabled or disabled.
    [17]
    The wireless device (510) of claim 16 wherein the wireless device (510) is additionally adapted to perform the method of any one of claims 2 to 15.
    [18]
    18. A wireless device (510) for a cellular communications network, the wireless device (510) comprising:
    an interface (514) comprising a radio front end circuitry (512); and processing circuitry (520) associated with the interface (514), the processing circuitry (520) configured to make the wireless device (510): receive, from a network node (560) via the interface (514), a Control Element, CE, of Access Control to the Medium, MAC, comprising: an indication of a set of semi-persistent polling reference signal resources to be activated or deactivated; and information indicating a spatial relationship to the set of semi-persistent poll reference signal resources to be enabled or disabled.
    [19]
    The wireless device (510) of claim 18 wherein the information indicating the spatial relationship comprises: an indication of a type of reference signal for which the spatial relationship is provided; and an identifier of a set of reference signal resources for the type of reference signal for which the spatial relationship is provided.
    [20]
    The wireless device (510) of claim 19 wherein the indication of the reference signal type indicates that the reference signal type is a Channel State Information Reference Sign, CSI-RS, a signal Block Synchronization, SSB or a Polling Reference Signal, SRS.
    [21]
    The wireless device (510) of claim 19 wherein the indication of the type of reference signal comprises two bits indicating the type of reference signal, wherein: a first state of the two bits indicates that the type of signal reference is a first type of reference signal; a second state of the two bits indicates that the reference signal type is a second reference signal type; and a third state of the two bits indicates that the reference signal type is a third reference signal type.
    [22]
    The wireless device (510) of claim 21 wherein the first type of reference signal is a Channel State Information Reference Signal, CSI-RS, the second type of reference signal is a Synchronization, SSB, and the third type of reference signal is a Polling Reference Signal, SRS.
    [23]
    The wireless device (510) of claim 19 wherein the MAC CE comprises: a first octet comprising the indication of the semi-persistent poll reference signal feature to be enabled or disabled; and a second octet comprising the indication of the type of reference signal for which the spatial relationship is provided and the identifier of the set of reference signal resources for the type of reference signal for which the spatial relationship is provided.
    [24]
    The wireless device (510) of claim 23 wherein: • if a first bit in the second octet is set to a first state: o the first bit serves as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Channel State Information Reference Signal, CSI-RS; and o the bits remaining in the second octet serve as the identifier of the set of reference signal resources for the CSI-RS; and • if the first bit in the second octet is set to a second state:
    o if a second bit in the second octet is set for a first state: ▪ the first bit and the second bit serve as the indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for the which the spatial relationship is provided is a Synchronization signal block, SSB; and ▪ the bits remaining in the second octet serve as the identifier of the set of reference signal resources for the SSB; and o if the second bit in the second octet is set to a second state: ▪ the first bit and the second bit serve as the indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Polling Reference Signal, SRS; and ▪ all but one of the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SRS.
    [25]
    The wireless device (510) of claim 23 wherein: a first bit in the second octet is set to a first state so that the first bit serves as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Channel State Information Reference Signal, CSI-RS; and the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the CSI-RS.
    [26]
    The wireless device (510) of claim 23 wherein: a first bit in the second octet is set to a second state; a second bit in the second octet is set to a first state so that the first bit and the second bit serve as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Synchronization signal block, SSB; and the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SSB.
    [27]
    The wireless device (510) of claim 23 wherein: a first bit in the second octet is set to a second state; a second bit in the second octet is set to a second state so that the first bit and the second bit serve as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Polling Reference Signal, SRS; and all but one of the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SRS.
    [28]
    The wireless device (510) of claim 18 wherein: if a first bit of an octet of the MAC CE is set to a first state, the remaining bits in the octet comprise a first set of fields; if the first bit of the octet is set to a second state and a second bit of the octet is set to a first state, the remaining bits in the octet comprise a second set of fields; and if the first bit of the octet is set to a second state and the second bit of the octet is set to a second state, the remaining bits in the octet comprise a third set of fields.
    [29]
    The wireless device (510) of claim 28 wherein the first set of fields comprises a field comprising bits that provide an identifier for a set of Channel State Information Reference Signal, CSI-RS, resources for the which a spatial relationship is indicated.
    [30]
    The wireless device (510) of claim 28 or 29 wherein the second set of fields comprises a field comprising bits that provide an identifier for a set of Synchronization Signal Block resources, SSB, for which a spatial relationship is indicated.
    [31]
    The wireless device (510) of any one of claims 28 to 30 wherein the third set of fields comprises a field comprising bits that provide an identifier for a Sounding Reference Signal, SRS, resource for a set whose relationship space is indicated.
    [32]
    The wireless device (510) of any one of claims 18 to 31 wherein the indication is an indication to activate the semi-persistent polling reference signal feature set, and the processing circuitry (520) is additionally configured to cause the wireless device (510) to transmit a poll reference signal in the enabled semi-persistent poll reference signal feature set.
    [33]
    33. A method of operating a network node (560) in a cellular communications network, comprising: transmitting (1400), to a wireless device (510), a Control Element, CE, for Access Control to the Media , MAC, comprising: an indication of a set of semi-persistent poll reference signal resources to be enabled or disabled; and information indicating a spatial relationship to the set of semi-persistent poll reference signal resources to be enabled or disabled.
    [34]
    34. The method of claim 33 wherein the information indicating the spatial relationship comprises: an indication of a type of reference signal for which the spatial relationship is provided; and an identifier of a set of reference signal resources for the type of reference signal for which the spatial relationship is provided.
    [35]
    35. The method of claim 34 wherein indicating the reference signal type indicates that the reference signal type is a Channel State Information Reference Signal, CSI-RS, a Sync Signal Block, SSB or a Polling Reference Signal, SRS.
    [36]
    36. The method of claim 34 wherein the reference signal type comprises two bits indicating the type of reference signal, wherein: a first state of the two bits indicates that the type of reference signal is a first type reference signal; a second state of the two bits indicates that the reference signal type is a second reference signal type; and a third state of the two bits indicates that the reference signal type is a third reference signal type.
    [37]
    37. The method of claim 36 wherein the first type of reference signal is a Channel State Information Reference Signal, CSI-RS, the second type of reference signal is a Sync Signal Block, SSB, and the third type of reference signal is a Polling Reference Signal, SRS.
    [38]
    38. The method of claim 34 wherein the MAC CE comprises: a first octet comprising the indication of the semi-persistent poll reference signal feature set to be enabled or disabled; and a second octet comprising the indication of the type of reference signal for which the spatial relationship is provided and the identifier of the set of reference signal resources for the type of reference signal for which the spatial relationship is provided.
    [39]
    39. The method of claim 38 wherein: • if a first bit in the second octet is set to a first state: the first bit serves as an indication of the type of reference signal for which the spatial relationship is provided and the type of signal reference for which the spatial relationship is provided is a Channel State Information Reference Signal, CSI-RS; and o the bits remaining in the second octet serve as the identifier of the set of reference signal resources for the CSI-RS; and • if the first bit in the second octet is set to a second state: o if a second bit in the second octet is set to a first state: ▪ the first bit and the second bit serve as the indication of the type of reference signal for which the spatial relation is provided and the type of reference signal for which the spatial relation is provided is a Synchronization signal block, SSB; and ▪ the bits remaining in the second octet serve as the identifier of the set of reference signal resources for the SSB; and o if the second bit in the second octet is set to a second state: ▪ the first bit and the second bit serve as the indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Polling Reference Signal, SRS; and ▪ all but one of the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SRS.
    [40]
    40. The method of claim 38 wherein: a first bit in the second octet is set to a first state so that the first bit serves as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Channel State Information Reference Signal, CSI-RS; and the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the CSI-RS.
    [41]
    41. The method of claim 38 wherein: a first bit in the second octet is set to a second state; a second bit in the second octet is set to a first state so that the first bit and the second bit serve as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Synchronization signal block, SSB; and the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SSB.
    [42]
    42. The method of claim 38 wherein: a first bit in the second octet is set to a second state; a second bit in the second octet is set to a second state so that the first bit and the second bit serve as an indication of the type of reference signal for which the spatial relationship is provided and the type of reference signal for which the spatial relationship is provided is a Reference Signal of
    Polling, SRS; and all but one of the remaining bits in the second octet serve as the identifier of the set of reference signal resources for the SRS.
    [43]
    43. The method of claim 33 wherein: if a first bit of an octet of the MAC CE is set to a first state, the remaining bits in the octet comprise a first set of fields; if the first bit of the octet is set to a second state and a second bit of the octet is set to a first state, the remaining bits in the octet comprise a second set of fields; and if the first bit of the octet is set to a second state and the second bit of the octet is set to a second state, the remaining bits in the octet comprise a third set of fields.
    [44]
    44. The method of claim 43 wherein the first set of fields comprises a field comprising bits that provide an identifier for a set of Channel State Information Reference Signal, CSI-RS, for which a spatial relationship is indicated.
    [45]
    45. The method of claim 43 or 44 wherein the second set of fields comprises a field comprising bits that provide an identifier for a Sync Signal Block resource, SSB, for which a spatial relationship is indicated.
    [46]
    46. The method of any of claims 43 to 45 wherein the third set of fields comprises a field comprising bits that provide an identifier for a set of Polling Reference Signal, SRS, resources for which a spatial relationship is indicated .
    [47]
    47. A network node (560) for a cellular communications network, the network node (560) adapted for:
    transmitting, to a wireless device (510), a Control Element, CE, Media Access Control, MAC, comprising: an indication of a set of semi-persistent poll reference signal resources to be enabled or disabled; and information indicating a spatial relationship to the set of semi-persistent poll reference signal resources to be enabled or disabled.
    [48]
    48. The network node (560) of claim 47, wherein the network node (560) is further adapted to perform the method of any of claims 34 to 46.
    [49]
    49. A network node (560) for a cellular communications network, the network node (560) comprising: an interface (590); and processing circuitry (570) associated with the interface (590), the processing circuitry (570) configured to cause the network node (560) to transmit, to a wireless device (510), a Control Element, CE, Media Access Control, MAC, comprising: an indication of a set of semi-persistent poll reference signal resources to be enabled or disabled; and information indicating a spatial relationship to the set of semi-persistent poll reference signal resources to be enabled or disabled.
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    法律状态:
    2021-12-07| 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
    US201862631243P| true| 2018-02-15|2018-02-15|
    US62/631,243|2018-02-15|
    PCT/IB2019/050639|WO2019159024A1|2018-02-15|2019-01-25|Efficient mac ce indication of spatial relation for semi-persistent srs|
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