Wireless communication method, device and system

A technology for wireless communication and wireless communication equipment, which is applied in the fields of wireless communication methods, communication devices and communication systems, can solve the problem that the communication mode cannot continue to use the cellular communication mode, etc., and achieves the effects of ensuring resource utilization and reducing control signaling overhead.

Inactive Publication Date: 2013-07-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For D2D communication, business data is directly transmitted between UEs, so its communication method cannot follow the traditional cellular communication method

Method used

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  • Wireless communication method, device and system
  • Wireless communication method, device and system
  • Wireless communication method, device and system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0110] According to the wireless communication method in this example, the network node transmits the first authorization information to the receiving device (first communication device) and / or the transmitting device (second communication device), and the transmitting end device (second communication device) of D2D communication sends the D2D The communication receiver device (first communication device) transmits the second authorization information and service data. Wherein, the first grant information includes at least resource allocation information, and the second grant information includes at least modulation and coding schemes.

[0111] In this example, the first authorization information is sent in a high-layer signaling manner. For example, when establishing a D2D link, a network node (such as a base station eNB) sends a second Authorization information to indicate allocated resources for D2D communication.

[0112] In this example, the second authorization informa...

specific Embodiment 2

[0116] According to the wireless communication method in this example, the network node transmits the first authorization information to the transmitting device (second communication device) and / or the receiving device (first communication device), and the transmitting end device (second communication device) of D2D communication sends the D2D The communication receiver device (the first communication device) transmits the second authorization information. Wherein, the first grant information includes at least first resource allocation information, and the second grant information includes at least second resource allocation information and a modulation and coding scheme.

[0117] In this example, the first authorization information is sent in a high-layer signaling manner. For example, when establishing a D2D link, a network node (such as a base station eNB) sends a first communication device, such as a UE, and / or a second communication device, such as a UE or a media server ...

specific Embodiment 3

[0124] The second communication device determines the MCS level in the second authorization information at least according to the channel measurement result. The channel measurement result is obtained by the second communication device measuring a reference signal (Reference Signal) sent by the first communication device; or, the first communication device measures the reference signal sent by the second communication device to obtain the channel measurement result, and The channel measurement result is fed back to the second communication device. The reference signal may be one or more of the following signals: demodulation reference signal (Demodulation Reference Signal, DMRS), sounding reference signal (Sounding Reference Signal, SRS), random access preamble (Random Access preamble), Channel State Information Reference Signal (CSI-RS), dedicated reference signal for device-to-device communication.

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Abstract

The invention discloses a wireless communication method, device and system. The method comprises the steps of transmitting first authorization information to a first communication device and / or a second communication device, and enabling the second communication device to transmit second authorization information to the first communication device; enabling the first authorization information to at least comprise first resource distribution information for distributing resources; enabling the second authorization information to at least comprise a modulation mode for indicating business data and a modulation coding mode for a code rate; enabling the second communication device to transmit the business data to the first communication device in distributed resources, or enabling the first communication device to transmit the business data to the second communication device in the distributed resources. According to the wireless communication method and device, the problem of inefficiency in transmission and scheduling in device-to-device (D2D) communication is solved, control signaling spending is reduced relative to cellular communication, and the resource utilization rate in device-to-device communication is guaranteed.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a wireless communication method, a communication device and a communication system. Background technique [0002] Because the cellular communication system realizes the multiplexing of limited spectrum resources, the wireless communication technology has been developed vigorously. In a cellular system, when there is a service to be transmitted between two user equipments (UE1), the service data from user equipment 1 (UE1) to user equipment 2 (UE2) will first be transmitted to the base station through the air interface 1. Base station 1 transmits the user data to base station 2 through the core network, and base station 2 then transmits the above service data to UE2 through the air interface. The service data transmission from UE2 to UE1 adopts a similar processing flow. Such as figure 1 As shown, when UE1 and UE2 are located in the same cell, although base station 1 and base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/04H04W76/15H04W72/20H04W72/23H04B7/0456
Inventor 吴栓栓孙云锋毕峰梁枫袁弋非袁明
Owner ZTE CORP
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