Wireless Communication Method and Communication Apparatus

• US 20140369292A1
• Filed: 12/31/2012
• Published: 12/18/2014
• Est. Priority Date: 01/17/2012
• Status: Abandoned Application

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Wu, Shuanshuan, Sun, Yunfeng, Bi, Feng, Liang, Feng, Yuan, Yifei, Yuan, Ming
• Application Number:
  US14/372,248
• Publication Number:
  US 20140369292A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections

Abstract

The embodiments of the present invention disclose a wireless communication method and apparatus. The method includes: a first communication device receiving first grant from a network node, the first grant at least comprising first resource allocation information for allocating resources; the first communication device receiving second grant from a second communication device, the second grant at least comprising a modulation and coding scheme of service data; the first grant and the second grant being used for scheduling service data transmission between the first communication device and the second communication device; and the first communication device receiving, according to the scheduling, service data transmitted by the second communication device; and/or the first communication device transmitting, according to the scheduling, service data to the second communication device.

Claims

1. A wireless communication method, comprising:

a first communication device receiving first grant from a network node, wherein the first grant at least comprises first resource allocation information for allocating resources;

the first communication device receiving second grant from a second communication device, wherein the second grant at least comprises a modulation and coding scheme of service data;

the first grant and the second grant being used for scheduling service data transmission between the first communication device and the second communication device; and

the first communication device receiving, according to the scheduling, service data transmitted by the second communication device; and

/or the first communication device transmitting, according to the scheduling, service data to the second communication device.

2. The method according to claim 1, wherein,

the second grant further comprises second resource allocation information indicating resources for transmitting the service data, the indicated resources being a subset of resources allocated by the first resource allocation information;

or

the first resource allocation information includes time-domain resource allocation information and/or frequency-domain resource allocation information, the time-domain resource allocation information indicating subframe locations, and the frequency-domain resource allocation information indicating physical resource block locations.

4. The method according to claim 1, wherein,

the second grant is transmitted while transmitting the service data;

or the second grant is used for semi-persistent scheduling, and is transmitted in an initialized or re-initialized semi-persistent scheduling period.

5. The method according to claim 1, wherein,

a resource location for transmitting the second grant is fixed, and the first communication device detects the second grant at the fixed location;

or

the first grant indicates a resource location for transmitting the second grant, and the first communication device detects the second grant according to the indication;

or

the first communication device performs blindly decoding on the second grant in resources allocated by the first grant.

6. The method according to claim 1, wherein,

the first grant further comprises any one of following information or a combination thereof:

a power control command for determining a transmission power of the service data;

precoding information for indicating a transmission precoding matrix index and/or the number of transmission ports of the service data and/or second grant; and

reference signal information for indicating an orthogonal cover code and/or a cyclic shift of a demodulation reference signal of the service data;

or

the first grant is high-layer signaling, carried through radio resource control signaling.

8. The method according to claim 1, wherein,

the second grant further comprises any one of following information or a combination thereof:

a power control command for determining a transmission power of the service data;

precoding information for indicating a transmission precoding matrix index and/or the number of transmission ports of the service data; and

reference signal information for indicating an orthogonal cover code and/or a cyclic shift of a demodulation reference signal of the service data;

or

the second grant is physical layer signaling, transmitted in a format of control information.

10. The method according to claim 1, wherein,

the modulation and coding scheme is determined by the second communication device according to a measurement result fed back by the first communication device;

or the modulation and coding scheme is determined by the second communication device measuring a reference signal transmitted by the first communication device.

3. (canceled)

7. (canceled)

9. (canceled)

11. A wireless communication device, comprising:

a grant reception module, configured to receive first grant from a network node, wherein the first grant at least comprises first resource allocation information for allocating resources; and

receive second grant from a second communication device, wherein the second grant at least comprises a modulation and coding scheme of service data;

the first grant and the second grant being used for scheduling service data transmission between the first communication device and the second communication device; and

a service data transceiving module, configured to receive, according to the first grant and the second grant, service data transmitted by another communication device communicating with the communication device; and

/or transmit, according to the first grant and the second grant, service data to said another communication device.

12. The wireless communication device according to claim 11, wherein,

the second grant further comprises second resource allocation information indicating resources for transmitting the service data, the indicated resources being a subset of resources allocated by the first resource allocation information.

20. The wireless communication device according to claim 11, wherein,

the first resource allocation information includes time-domain resource allocation information and/or frequency-domain resource allocation information, the time-domain resource allocation information indicating subframe locations, and the frequency-domain resource allocation information indicating physical resource block locations.

21. The wireless communication device according to claim 11, wherein,

the second grant is transmitted while transmitting the service data;

or the second grant is used for semi-persistent scheduling, and is transmitted in an initialized or re-initialized semi-persistent scheduling period.

22. The wireless communication device according to claim 11, wherein,

the first grant further comprises any one of following information or a combination thereof:

a power control command for determining a transmission power of the service data;

precoding information for indicating a transmission precoding matrix index and/or the number of transmission ports of the service data and/or second grant; and

reference signal information for indicating an orthogonal cover code and/or a cyclic shift of a demodulation reference signal of the service data;

or

the first grant is high-layer signaling, carried through radio resource control signaling.

23. The wireless communication device according to claim 11, wherein,

the second grant further comprises any one of following information or a combination thereof:

a power control command for determining a transmission power of the service data;

precoding information for indicating a transmission precoding matrix index and/or the number of transmission ports of the service data; and

reference signal information for indicating an orthogonal cover code and/or a cyclic shift of a demodulation reference signal of the service data;

or

the second grant is physical layer signaling, transmitted in a format of control information.

24. The wireless communication device according to claim 11, wherein, the modulation and coding scheme is determined by the second communication device according to a measurement result fed back by the first communication device;

or the modulation and coding scheme is determined by the second communication device measuring a reference signal transmitted by the first communication device.

13. A wireless communication device, comprising:

a reception module, a resource determination module, and a transmission module, wherein,

the reception module is configured to receive first grant from a network node, wherein the first grant at least comprises first resource allocation information for allocating transmission resources of device to device communication service data;

the resource determination module is configured to determine the transmission resources of the service data at least according to the first grant;

the transmission module is configured to transmit second grant to another communication device, wherein the second grant at least comprises a modulation and coding scheme of the service data.

14. The wireless communication device according to claim 13, wherein,

the reception module is further configured to receive the device to device communication service data transmitted by another communication device communicating with the communication device in resources determined by the resource determination module;

or

the transmission module is further configured to transmit the device to device communication service data to said another communication device communicating with the communication device in the resources determined by the resource determination module.

15. The wireless communication device according to claim 13, wherein,

the communication device further comprises a measurement module and a modulation and coding scheme determination module;

wherein,

the measurement module is configured to detect a reference signal transmitted by said another communication device and generate a measurement result; and

the modulation and coding scheme determination module is configured to generate modulation and coding scheme information in the second grant according to the measurement result

or

the communication device further comprises a measurement result reception module and a modulation and coding scheme determination module;

wherein,

the measurement result reception module is configured to receive channel condition information transmitted by said another communication device; and

the modulation and coding scheme determination module is configured to generate modulation and coding scheme information in the second grant according to the channel condition information.

16. (canceled)

17. A wireless communication method, comprising:

allocating resources to Device to Device (D2D) communication between a first communication device and a second communication device;

transmitting first grant to the first communication device and/or the second communication device, wherein the first grant at least comprises first resource allocation information for indicating the resources allocated to the D2D communication.

18. The method according to claim 17, wherein,

the first resource allocation information comprises time-domain resource allocation information and/or frequency-domain resource allocation information, the time-domain resource allocation information indicating subframe locations of the allocated resources, and the frequency-domain resource allocation information indicating physical resource block locations of the allocated resources.

19. A wireless communication control device, comprising a resource allocation module and a transmission module, wherein,

the resource allocation module is configured to allocate resources to Device to Device (D2D) communication between a first communication device and a second communication device;

and

the transmission module is configured to transmit first grant to the first communication device and/or the second communication device, wherein the first grant at least comprises first resource allocation information for indicating the resources allocated by the resource allocation module to the D2D communication.