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Wireless communication method, wireless communication system and base station

A wireless communication and base station technology, applied in the field of system and base station, device-to-device wireless communication method, can solve problems such as no effective solution is proposed, scheduling and transmission methods cannot follow traditional cellular communication methods, etc.

Active Publication Date: 2013-04-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For D2D communication, business data is directly transmitted between UEs, so its scheduling and transmission methods cannot follow traditional cellular communication methods
For example, for the scheduling and transmission of D2D communication in the LTE (Long Term Evolution, Long Term Evolution) / LTE-A (LTE-Advanced, Advanced Long Term Evolution) system, no effective solution has been proposed yet.

Method used

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  • Wireless communication method, wireless communication system and base station
  • Wireless communication method, wireless communication system and base station
  • Wireless communication method, wireless communication system and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] In this embodiment, the base station transmits authorization information 1 to UE1 in subframe n1, and UE1 transmits service data 1 in subframe n1+k1 according to the instructions of authorization information 1; and the base station transmits authorization information in subframe n1+m1 2 to UE2, and UE2 receives the service data 1 in subframe n1+k1 according to the indication of the authorization information 2. And, the subframe n1+k1 is a downlink subframe.

[0076] For k1, its value needs to meet the UE's preparation time when transmitting data, that is, after UE1 receives authorization information 1 in subframe n1, it needs to complete the data transmitter preparation before subframe n1+k1 sends data, for example Channel coding, constellation modulation, resource mapping, etc. Preferably, the value of k1 can refer to the scheduling sequence of the uplink service of the LTE / LTE-A system. That is, in the FDD system, the value of k1 is preferably 4; in the TDD system, the...

Embodiment 2

[0080] In this embodiment, the base station transmits authorization information 1 in subframe n1, UE1 transmits service data 1 in subframe n1+k1 according to the instructions of said authorization information 1, and the base station transmits authorization information 2 in subframe n1+m1, The UE2 receives the service data 1 in the subframe n1+k1 according to the indication of the authorization information 2. And, the subframe n1+k1 is an uplink subframe.

[0081] For k1, its value needs to meet the UE's preparation time when transmitting data, that is, after UE1 receives authorization information 1 in subframe n1, it needs to complete the data transmitter preparation before sending data in subframe n1+k1, for example Channel coding, constellation modulation, resource mapping, etc. Preferably, the value of k1 is the same as the scheduling sequence of the uplink service of the LTE / LTE-A system, that is, in the FDD system, the value of k1 is preferably 4; in the TDD system, the val...

Embodiment 3

[0085] This embodiment describes the transmission method of the service data 2 of the present invention. Specifically, the base station transmits authorization information 3 in subframe n2, and UE2 transmits service data 2 in subframe n2+k2 according to the instructions of the authorization information 3; And, the base station transmits authorization information 4 in subframe n2+m2, and UE1 receives the service data 2 in subframe n2+k2 according to the indication of the authorization information 4.

[0086] In this embodiment, the transmission of the authorization information 3 and the authorization information 4 can adopt the transmission method and the time sequence relationship of the authorization information 1 and the authorization information 2 in Embodiment 1 and Embodiment 2, and will not be repeated.

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Abstract

The invention provides a wireless communication method which includes that a base station transmits first authorization information to first user equipment at a sub-frame n1, and the first user equipment transmits first business data at a sub-frame n1+k1 according to the first authorization information; the base station transmits second authorization information to second user equipment at a sub-frame n1+m1, and the second user equipment receives the first business data at the sub-frame n1+k1 according to indication of the second authorization information. The invention further provides the base station and a wireless communication system. By means of the wireless communication method, the wireless communication system and the base station, device-to-device (D2D) communication is achieved.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to a device-to-device (D2D) wireless communication method, system and base station in a cellular system. Background technique [0002] As the cellular communication system realizes the multiplexing of limited spectrum resources, wireless communication technology has developed vigorously. In a cellular system, when there is a service to be transmitted between two user equipment (UE), the service data from user equipment 1 (UE1) to user equipment 2 (UE2) will first be transmitted to base station 1 through the air interface. Base station 1 transmits the user data to base station 2 through the core network, and base station 2 transmits the above service data to UE2 through the air interface. The service data from UE2 to UE1 uses a similar process. If UE1 and UE2 are located in the same cell, then base station 1 and base station 2 are the same site, and one data transmission wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 吴栓栓戴博梁枫李儒岳袁弋非毕峰袁明杨瑾
Owner ZTE CORP
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