阅读说明：本技术 用于非正交ue签名序列的前向兼容设计 (Forward-compatible design for non-orthogonal UE signature sequences ) 是由 雷静 R·王 S·朴 N·布衫 J·K·森达拉拉扬 蒋靖 黄轶 J·B·索里亚加 T 于 2019-01-30 设计创作，主要内容包括：描述了用于无线通信的方法、系统和设备。无线设备(诸如,用户装备(UE))可标识具有与第一数目相等的行数和与第二数目相等的列数的码本矩阵,该第一数目等于支持与基站进行通信的UE的数目,且该第二数目等于因UE而异的签名序列集合的序列长度,其中该码本矩阵的行包括韦尔奇边界等式(WBE)实现向量集。该UE可至少部分地基于与UE相关联的标识符到码本矩阵的一行或多行之间的映射来标识因UE而异的签名序列,以及至少部分地基于该因UE而异的签名序列与基站进行通信。(Methods, systems, and devices for wireless communication are described. A wireless device, such as a User Equipment (UE), may identify a codebook matrix having a number of rows equal to a first number equal to a number of UEs supporting communication with a base station and a number of columns equal to a second number equal to a sequence length of a set of UE-specific signature sequences, where the rows of the codebook matrix include a set of Welch Border Equation (WBE) implementation vectors. The UE may identify a UE-specific signature sequence based at least in part on a mapping between an identifier associated with the UE to one or more rows of a codebook matrix and communicate with a base station based at least in part on the UE-specific signature sequence.)

1. A method for wireless communication, comprising:

identifying, at a User Equipment (UE), a codebook matrix having a number of rows equal to a first number and a number of columns equal to a second number, the first number equal to a number of User Equipments (UEs) supporting communication with a base station and the second number equal to a sequence length of a set of UE-specific signature sequences, wherein a row of the codebook matrix comprises a set of Welch boundary equation implementation vectors;

identifying a UE-specific signature sequence based at least in part on a mapping between an identifier associated with the UE to one or more rows of the codebook matrix; and

communicate with the base station based at least in part on the UE-specific signature sequence.

2. The method of claim 1, wherein identifying the codebook matrix comprises:

generating a first orthogonal matrix comprising a number of rows equal to the first number and a number of columns equal to the first number; and

removing a number of columns equal to a third number from the first orthogonal matrix to generate the codebook matrix.

3. The method of claim 2, wherein the first orthogonal matrix is a discrete fourier transform matrix.

4. The method of claim 2, wherein the first orthogonal matrix comprises a plurality of cyclically shifted Zadoff-Chu sequences.

5. The method of claim 1, wherein identifying the codebook matrix comprises:

generating the codebook matrix based at least in part on chirp sequence functions over the first number and the second number.

6. The method of claim 1, further comprising:

receiving, from the base station, an activation indicator for a supplemental set of UE-specific signature sequences having a number of sequences equal to a third number.

7. The method of claim 6, wherein identifying the codebook matrix comprises:

identifying a delta matrix comprising a number of rows equal to the third number and a number of columns equal to the second number, wherein identifying the UE-specific signature sequence is based at least in part on a mapping between the identifier associated with the UE and one or more rows of the delta matrix.

8. The method of claim 1, further comprising:

receiving, from the base station, a change indicator of the sequence length from the second number to a third number;

adding one or more column vectors having a length of the first number to the codebook matrix to obtain a second codebook matrix, wherein rows of the second codebook matrix comprise a second set of UE-specific signature sequences;

identifying a second UE-specific signature sequence based at least in part on a mapping between the identifier associated with the UE to one or more rows of the second codebook matrix; and

communicate with the base station based at least in part on the second UE-specific signature sequence.

9. The method of claim 8, further comprising:

generating the one or more column vectors according to an orthogonalization function.

10. The method of claim 1, further comprising:

receiving, from the base station, a change indicator of the sequence length from the second number to a third number;

removing one or more orthogonal column vectors of the first number of lengths from the codebook matrix to obtain a second codebook matrix, wherein rows of the second codebook matrix comprise a second set of UE-specific signature sequences;

identifying a second UE-specific signature sequence based at least in part on a mapping between the identifier associated with the UE to one or more rows of the second codebook matrix; and

communicate with the base station based at least in part on the second UE-specific signature sequence.

11. The method of claim 1, wherein the communicating with the base station comprises:

applying the UE-specific signature sequence to an uplink signal, the uplink comprising a reference signal, a control signal, a data signal, or a combination thereof; and

transmitting the uplink signal to the base station.

12. The method of claim 1, wherein the communicating with the base station comprises:

receiving a downlink signal from the base station; and

applying the UE-specific signature sequence to the downlink signal to obtain a reference signal, a control signal, a data signal, or a combination thereof.

13. A method for wireless communication, comprising:

receiving, at a base station from a core network, a first number representing a number of User Equipments (UEs) supporting communication with the base station and a second number associated with a sequence length of a UE-specific signature sequence for communicating with the UEs, wherein the second number is less than the first number;

identifying a codebook matrix having a number of rows equal to the first number and a number of columns equal to the second number, wherein rows of the codebook matrix comprise a set of Walch boundary equation implementation vectors, and wherein rows of the codebook matrix correspond to a first set of UE-specific signature sequences having the sequence length; and

communicate with one or more UEs based at least in part on the first set of UE-specific signature sequences.

14. The method of claim 13, wherein identifying the codebook matrix comprises:

generating a first orthogonal matrix comprising a number of rows equal to the first number and a number of columns equal to the first number; and

removing a number of columns equal to a third number from the first orthogonal matrix to generate the codebook matrix.

15. The method of claim 14, wherein the first orthogonal matrix is a discrete fourier transform matrix.

16. The method of claim 14, wherein the first orthogonal matrix comprises a plurality of cyclically shifted Zadoff-Chu sequences.

17. The method of claim 13, wherein identifying the codebook matrix comprises:

generating the codebook matrix based at least in part on chirp sequence functions over the first number and the second number.

18. The method of claim 13, further comprising:

identifying, at the base station, a number of additional UEs equal to the third number for supporting communication with the base station.

19. The method of claim 18, further comprising:

generating an incremental matrix comprising a number of rows equal to the third number and a number of columns equal to the second number;

generating an augmented codebook matrix by appending the delta matrix to the codebook matrix; and

communicating with at least one UE based at least in part on the augmented codebook matrix.

20. The method of claim 19, wherein rows of the augmented codebook matrix comprise a set of welch boundary equation realization vectors.

21. The method of claim 19, further comprising:

broadcasting an activation indicator from a supplemental set of UE-specific signature sequences of the delta matrix.

22. The method of claim 13, further comprising:

adding one or more column vectors having a length of the first number to the codebook matrix to obtain a second codebook matrix, wherein rows of the second codebook matrix comprise a second set of UE-specific signature sequences; and

communicate with the one or more UEs based at least in part on the second set of UE-specific signature sequences.

23. The method of claim 22, further comprising:

generating the one or more column vectors according to an orthogonalization function.

24. The method of claim 13, further comprising:

removing one or more orthogonal column vectors of the first number of lengths from the codebook matrix to obtain a second codebook matrix, wherein rows of the second codebook matrix comprise a second set of UE-specific signature sequences; and

communicate with the one or more UEs based at least in part on the second set of UE-specific signature sequences.

25. The method of claim 13, further comprising:

broadcasting a change indicator of the sequence length from the second number to a third number.

26. The method of claim 13, further comprising:

assigning a first UE-specific signature sequence from the first set of rows of the codebook matrix to a first UE based at least in part on a first quality of service (QoS) associated with the first UE; and

assigning a second UE-specific signature sequence from a second set of rows of the codebook matrix to a second UE based at least in part on a second QoS associated with the second UE.

27. An apparatus for wireless communication, comprising:

means for identifying, at a User Equipment (UE), a codebook matrix having a number of rows equal to a first number and a number of columns equal to a second number, the first number equal to a number of User Equipments (UEs) supporting communication with a base station and the second number equal to a sequence length of a set of UE-specific signature sequences, wherein the rows of the codebook matrix comprise a set of Walsh boundary equation implementation vectors;

means for identifying a UE-specific signature sequence based at least in part on a mapping between an identifier associated with the UE to one or more rows of the codebook matrix; and

means for communicating with the base station based at least in part on the UE-specific signature sequence.

28. The apparatus of claim 27, further comprising:

means for receiving an activation indicator of a complementary set of UE-specific signature sequences having a number of sequences equal to a third number from the base station,

wherein means for identifying the codebook matrix comprises:

means for identifying a delta matrix comprising a number of sequences equal to the third number and a number of columns equal to the second number, wherein identifying the UE-specific signature sequence is based at least in part on a mapping between the identifier associated with the UE and one or more rows of the delta matrix.

29. An apparatus for wireless communication, comprising:

means for receiving, at a base station from a core network, a first number representing a number of User Equipments (UEs) supporting communication with the base station, and a second number associated with a sequence length of a UE-specific signature sequence for communicating with the UEs, wherein the second number is less than the first number;

means for identifying a codebook matrix having a number of rows equal to the first number and a number of columns equal to the second number, wherein a row of the codebook matrix comprises a set of Welch boundary equation implementation vectors, and wherein a row of the codebook matrix corresponds to a first set of UE-specific signature sequences having the sequence length; and

means for communicating with one or more UEs based at least in part on the first set of UE-specific signature sequences.

30. The apparatus of claim 29, further comprising:

means for identifying, at the base station, a number of additional UEs equal to a third number for supporting communication with the base station;

means for generating an incremental matrix comprising a number of rows equal to the third number and a number of columns equal to the second number;

means for generating an augmented codebook matrix by appending the delta matrix to the codebook matrix;

means for broadcasting an activation indicator from a supplemental set of UE-specific signature sequences of the delta matrix; and

means for communicating with at least one UE based at least in part on the augmented codebook matrix.