• 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:

    公开号:ES2575002T9
    申请号:ES09167921.7T
    申请日:2009-08-14
    公开日:2016-09-15
    发明作者:Hong He；Yingyang Li
    申请人:Samsung Electronics Co Ltd；
    IPC主号:
    专利说明:

    image 1
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    Other procedures for deriving continuous nSRS according to different values of k can be used as long as the same requirements apply.
    In step 1504, the UE determines the nSRS frequency hopping parameter according to the index number nf of the radio frame for the transmission of the SRS, and the index number ns of the time interval in the radio frame for the transmission of SRS, in equation (8) as follows:
    image6
    In equation (8), nf ≥ 0 indicates the radio frame index number, 0 ≤ ns ≤ 19 indicates the index number of the time interval in the radio frame for the transmission of the SRS, and according to RRC signaling, from the eNB, the UE determines T and ns with reference to Figure 8.5 ≤ T ≤ 320.
    In step 1505, the increase in the frequency of domain that the SRS needs to be updated within the frame is calculated according to the nSRS obtained, using equation (9) as
    image7
    In equation (9), Nb is obtained according to the RRC signaling from the eNB and with reference to Figures 13A to 13D, bhop indicates the SRS parameter of frequency hopping bandwidth, 0 ≤ bhop ≤ 3, which The UE obtains by reading the RRC signaling from the eNB.
    In step 1506, the index number nb of the frequency domain location for the transmission of the SRS is calculated according to the Fb (nSRS), obtained by equation (10) as follows:
    image8
    In equation (10), mSRS, b, bhop, nCRR are the parameters that the UE obtains by reading the RRC signaling from the eNB.
    In step 1507, the domain position of the starting frequency k0 is calculated to transmit the SRS by equation (11), as follows:
    image9
    In equation (11), mSRS, 0 is obtained from the specific SRS parameter of 3-bit cells transmitted by the eNB, mSRS, b is assigned by the eNB through the RRC signaling and obtained with reference to the table of check in image10
    Figures 13A to 13D, image11 indicates the number of subcarriers in each RB, kTC ∈ {0,1} indicates the number
    Comb, and
    indicates the frequency domain RB number in the uplink subframe.
    In step 1508, the SRS sequence is mapped to subcarriers numbered starting at k0. The detailed mapping technique is shown in Figure 17. In step 1509, the frequency domain symbols obtained by using IFFT are assigned to symbols.
    7
    image12
    image13
    5
    10
    fifteen
    twenty
    25


    Detailed is shown in Figure 17.
    In step 1611, the frequency domain symbols obtained by the IFFT are mapped to time domain symbols and then transmitted through antennas.
    In the following example of the present invention, it is assumed that the uplink of the TDD system occupies N RBS, where N = 25.
    The index number of the SRS bandwidth configuration transmitted by the eNB is k, where k = 3.
    The SRS period parameter configured by the eNB for the UE through the RRC signaling is ISRS, where ISRS = 0 in this example.
    The SRS bandwidth parameter configured by the eNB for the UE through RRC signaling is mSRS, b, and the frequency hopping bandwidth is bhop, the Comb number index for transmitting the SRS is kTC, whereb = 3, and mSRS, b = 4, bhop = 0, kTC = 0.
    The starting position of the frequency hopping configured by the eNB for the UE through the RRC signaling is └ 4nCRR / mSRS, b┘, where nCRR = 0.
    In a TDD system, the uplink and downlink are configured with the configuration l, where l = 1 in examples 1, 2 and 3, and l = 4 in examples 4, 5 and 6.
    A first example is suitable for the TDD system for which Figure 7 illustrates the SRS UE configuration table. The processing flow is illustrated in Figures 14A and 14B. In step 1, the UE generates the Zadeoff-chu sequence with the length of H = mSRS, b × 12/2 = 4 x 12/2 = 24 according to the SRS bandwidth parameter mSRS, b = 4 configured by the eNB through RRC signaling.
    In stage 2, the UE deduces the SRS period T = 2 according to the SRS period index SSRI = 0 and with the information in Figure 7. On the other hand, the UE learns about each radio frame the SRS index k = 0 , 1, 2 and 3 and the corresponding time interval index, as shown in Figure 18 (a);
    In step 3, before transmitting the SRS signal each time, the UE calculates the key frequency hopping parameter nSRS according to the current SRS index k and the radio frame index nf. In this example, it is assumed that the current frame index number nf = 0, and for the second transmission of SRS, k = 1, L = 4, and nSRS = nf × 4 + k = 0 × 4 + 1 = 1 .
    In later stages, the frequency domain increase is calculated by equation (21) as follows:
    image14
    The frequency domain location for transmitting the SRS is calculated according to equation (22) as follows:
    image15
    image16
    The starting position of the subcarrier frequency domain to transmit the SRS is calculated by equation (23),
    image17
    The UE assigns the generated SRS symbols to the subcarriers numbered from k0, as shown in Figure 17, and then adopts IFFT to translate the frequency domain symbols to the time domain symbols and transmit the symbols through an antenna
    A second example is suitable for the TDD system for which Figure 8 shows the SRS UE configuration table.
    The processing flow is illustrated in Figures 15A and 15B:
    10
    image18
    image19
    image20
    image21
    权利要求:
    Claims (1)
    [1]
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN200810213230|2008-08-15|
    CN2008102132300A|CN101651469B|2008-08-15|2008-08-15|Frequency hopping method for sending uplink monitoring reference mark in LET system|
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