Uplink data transmission method and apparatus

• US 10,616,910 B2
• Filed: 09/01/2017
• Issued: 04/07/2020
• Est. Priority Date: 03/03/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Xu, Xiuqiang, Wang, Lei, Zhang, Shunqing, Chen, Yan
• Primary Examiner(s): Lopata, Robert J
• Application Number:
  US15/693,907
• Publication Number:
  US 20180014320A1
• Time in Patent Office: 949 Days
• Field of Search: 370312
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/51 based on terminal or device properties

Abstract

Embodiments disclose an uplink data transmission method and apparatus. The method includes: determining M transmission areas allocated to a terminal device, and generating first information used to indicate the M transmission areas, where M is a positive integer, and the transmission area represents an air interface time-frequency resource that includes a time range and a frequency range that are specified by a communications system. The method also includes determining, for each transmission area of the M transmission areas, second information used to indicate a transport block size. The method also includes sending an indication message to the terminal device, so that the terminal device transmits uplink data according to the indication message, where the indication message includes the first information and the second information.

Claims

1. A method, comprising:

generating first information indicating M transmission areas allocated to a terminal device, wherein M is a positive integer, and each transmission area of the M transmission areas represents a time-frequency resource, wherein the first information comprises time domain information and frequency domain information of each transmission area of the M transmission areas, and the time domain information of each transmission area of the M transmission areas comprises a time domain assignment, a time domain period, and a time domain offset;

generating, for each transmission area of the M transmission areas, second information indicating a coding rate used for determining a transport block size; and

sending an indication message to the terminal device, wherein the indication message comprises the first information and the second information.

2. The method according to claim 1, wherein the second information comprises an index of the coding rate determined for each transmission area of the M transmission areas.

3. The method according to claim 1, further comprising:

receiving uplink data that is sent by the terminal device on N transmission areas among the M transmission areas, wherein N is a positive integer less than or equal to M; and

decoding the uplink data on the N transmission areas according to transport block sizes of the N transmission areas, wherein each of the transport block sizes of the N transmission areas is determined according to the coding rate determined for a corresponding transmission area of the N transmission areas.

4. The method according to claim 1, wherein the first information comprises a bit string indicating a resource block of a frequency domain of each transmission area of the M transmission areas.

5. The method according to claim 1, wherein sending the indication message to the terminal device comprises:

carrying the indication message on a broadcast channel, and sending, in a broadcast manner, the indication message to all or some of terminal devices served by a network device;

or

carrying the indication message on a dedicated control channel, and sending, in a unicast manner, the indication message to one specific terminal device or one specific group of terminal devices served by the network device.

24. The method according to claim 1, wherein the M transmission areas are used for non-grant-mode uplink transmission, and wherein uplink data is transmitted by using, without a grant from a network device, a transmission area among the M transmission areas.

6. An apparatus, comprising:

a processor;

a non-transitory memory;

a bus system; and

a transceiver;

wherein the processor, the non-transitory memory, and the transceiver are connected by using the bus system, the non-transitory memory is configured to store instructions, and the processor is configured to execute the instructions stored in the non-transitory memory, to control the transceiver to transmit and/or receive; and

wherein the processor is further configured to execute the instructions to;

generate first information indicating M transmission areas allocated to a terminal device, wherein M is a positive integer, and each transmission area of the M transmission areas represents a time-frequency resource, wherein the first information comprises time domain information and frequency domain information of each transmission area of the M transmission areas, where the time domain information of each transmission area of the M transmission areas comprises a time domain assignment, a time domain period, and a time domain offset; and

generate, for each transmission area of the M transmission areas, second information indicating a coding rate used for determined a transport block size; and

wherein the transceiver is configured to send an indication message to the terminal device, wherein the indication message comprises the first information and the second information.

7. The apparatus according to claim 6, wherein the processor is further configured to:

determine a codebook-pilot set for each transmission area of the M transmission areas, and generate third information indicating the codebook-pilot set, wherein the codebook-pilot set comprises multiple codebooks, multiple pilot sequences, and a combination relationship between a codebook and a pilot sequence; and

wherein the indication message sent by the transceiver further comprises the third information.

8. The apparatus according to claim 7, wherein each codebook comprises two or more codewords, and each codeword is a multidimensional complex vector and represents a mapping relationship between data and a plurality of modulation symbols, and the plurality of modulation symbols comprises a zero modulation symbol and a non-zero modulation symbol.

9. The apparatus according to claim 7, wherein the third information comprises an index of the codebook-pilot set.

10. The apparatus according to claim 6, wherein the second information comprises an index of the coding rate determined for each transmission area of the M transmission areas.

11. The apparatus according to claim 6, wherein the transceiver is further configured to:

receive uplink data that is sent by the terminal device on N transmission areas among the M transmission areas, wherein N is a positive integer less than or equal to M; and

wherein the processor is further configured to decode the uplink data on the N transmission areas according to transport block sizes of the N transmission areas, wherein each of the transport block sizes of the N transmission areas is determined according to the coding rate determined by the apparatus for a corresponding transmission area of the N transmission areas.

12. The apparatus according to claim 6, wherein the first information comprises a bit string indicating a resource block of a frequency domain of each transmission area of the M transmission areas.

13. The apparatus according to claim 6, wherein sending, by the transceiver, the indication message to the terminal device comprises:

carrying the indication message on a broadcast channel, and sending, in a broadcast manner, the indication message to all or some of terminal devices served by a network device;

or

carrying the indication message on a dedicated control channel, and sending, in a unicast manner, the indication message to one specific terminal device or one specific group of terminal devices served by the network device.

25. The apparatus according to claim 6, wherein the M transmission areas are used for non-grant-mode uplink transmission, and wherein uplink data is transmitted by using, without a grant from the apparatus, a transmission area among the M transmission areas.

14. An apparatus, comprising:

a processor;

a non-transitory memory;

a bus system; and

a transceiver;

wherein the processor, the non-transitory memory, and the transceiver are connected using the bus system, the non-transitory memory is configured to store instructions, and the processor is configured to execute the instructions stored in the non-transitory memory, to control the transceiver to transmit and/or receive;

wherein the transceiver is configured to;

receive an indication message sent by a network device, wherein the indication message comprises first information and second information, the first information indicates M transmission areas allocated by the network device to a terminal device, the second information comprises a coding rate assigned for each transmission area of the M transmission areas, M is a positive integer, and each transmission area represents a time-frequency resource, wherein the first information comprises time domain information and frequency domain information of each transmission area of the M transmission areas, and wherein the time domain information of each transmission area of the M transmission areas comprises a time domain assignment, a time domain period, and a time domain offset;

wherein the processor is further configured to;

determine N transmission areas according to the first information, wherein N is a positive integer less than or equal to M; and

determine a transport block size of each transmission area of the N transmission areas according to the second information; and

wherein the transceiver is further configured to;

send, on each transmission area of the N transmission areas, uplink data to the network device according to the transport block size of each transmission area of the N transmission areas.

15. The apparatus according to claim 14, wherein the processor is further configured to:

select one constellation-pilot combination from a preset constellation-pilot set for each transmission area of the N transmission areas, wherein the preset constellation-pilot set comprises multiple constellation-pilot combinations; and

generate an uplink pilot signal according to a pilot sequence in the constellation-pilot combination;

wherein sending, by the transceiver on each transmission area of the N transmission areas, uplink data to the network device according to the transport block size of each transmission area of the N transmission areas comprises;

generating the uplink data on each transmission area of the N transmission areas according to a modulation constellation in the constellation-pilot combination and according to the transport block size of each transmission area of the N transmission areas; and

sending the uplink pilot signal and the uplink data to the network device on each transmission area of the N transmission areas.

16. The apparatus according to claim 15, wherein the one constellation-pilot combination meets the following condition:

a quantity of unit time-frequency resources that are in a transmission area and that can be used to transmit data * a modulation order of a modulation constellation in a constellation-pilot combination>

a transport block size determined for the transmission area.

17. The apparatus according to claim 14, wherein the indication message further comprises third information, the third information indicates a codebook-pilot set that is determined by the network device for each transmission area of the M transmission areas, and the codebook-pilot set comprises multiple codebooks, pilot sequences, and a combination relationship between a codebook and a pilot sequence;

wherein the processor is further configured to;

determine a codebook-pilot set of each transmission area of the N transmission areas according to the third information;

select one codebook-pilot combination from the codebook-pilot set for each transmission area of the N transmission areas; and

generate an uplink pilot signal according to a pilot sequence in the codebook-pilot combination; and

wherein sending, by the transceiver on each transmission area of the N transmission areas, uplink data to the network device according to the transport block size of each transmission area of the N transmission areas comprises;

generating the uplink data on each transmission area of the N transmission areas according to a codebook in the codebook-pilot combination and according to the transport block size of each transmission area of the N transmission areas; and

sending the uplink pilot signal and the uplink data to the network device on each transmission area of the N transmission areas.

18. The apparatus according to claim 17, wherein each codebook comprises two or more codewords, each codeword is a multidimensional complex vector and represents a mapping relationship between data and a plurality of modulation symbols, and the plurality of modulation symbols comprise a zero modulation symbol and a non-zero modulation symbol.

19. The apparatus according to claim 17, wherein the third information comprises an index of the codebook-pilot set.

20. The apparatus according to claim 17, wherein the codebook-pilot combination meets the following condition:

a quantity of unit time-frequency resources that are in a transmission area and that can be used to transmit data * a modulation order of a codebook in a codebook-pilot combination>

a transport block size determined for the transmission area.

21. The apparatus according to claim 14,

wherein determining, by the processor, a transport block size of each transmission area of the N transmission areas according to the second information comprises:

determining the transport block size of each transmission area of the N transmission areas according to a quantity of unit time-frequency resources that are in each transmission area of the N transmission areas and that can be used to transmit data, a modulation order, and the coding rate.

22. The apparatus according to claim 21, wherein the second information comprises an index of a coding rate determined for each transmission area of the M transmission areas.

23. The apparatus according to claim 14, wherein the first information comprises a first bit string indicating a subframe of a time domain of each transmission area of the M transmission areas and a second bit string indicating a resource block of a frequency domain of each transmission area of the M transmission areas.

26. The apparatus according to claim 14, wherein the M transmission areas are used for non-grant-mode uplink transmission, and wherein uplink data is transmitted by using, without a grant from the network device, a transmission area among the M transmission areas.