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Device-to-device communication method, device and system

A communication method and equipment technology, applied in the direction of machine-to-machine/machine-type communication services, wireless communication, electrical components, etc., can solve the problems of the cellular communication method is not optimal, consumption, etc.

Inactive Publication Date: 2015-03-25
ZTE CORP
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  • Claims
  • Application Information

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Problems solved by technology

like Figure 1a As shown, when UE1 and UE2 are located in the same cell, although the two UEs are covered by the cell of the same base station, data transmission still needs to be relayed through the core network, and one data transmission still consumes two wireless spectrum resources
[0003] It can be seen that if UE1 and UE2 are located in the same cell and are relatively close to each other, then the above cellular communication method is obviously not optimal

Method used

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Embodiment Construction

[0108] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0109] The embodiments of the present invention are applicable to cellular wireless communication systems or networks, and are also applicable to scenarios where cellular network facilities are lacking or damaged, that is, user equipment cannot access the cellular network or establish a connection with the cellular network.

[0110] Common cellular wireless communication systems can be based on Code Division Multiple Access (CDMA, Code Division Multiplexing Access) technology, Frequency Division Multiple Access (FDMA, Frequency Division Multiplexing Access) technology, Orthogonal Frequency Division Multiple Access (OFDMA, Orthogonal-FDMA) technology , Single Carrier Frequency Division Multiple Access (SC-FDMA, Single Carrier-FDMA) technology, etc. For example, the downlink (or forward link) is based on OFDMA technol...

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Abstract

The invention discloses a device-to-device (D2D) communication method, device and system. A second device sends a dispatching request for D2D communication to a first device, and D2D communication data transmission is carried out based on the dispatching of the second device; the first device responds to the dispatching request and sends control information to dispatch the second device to carry out D2D communication data transmission; a third device detects the control information sent by the first device and receives the D2D communication data sent by the second device based on the control information. By means of the device-to-device communication method, device and system, the communication problem among the devices is solved, and compatibility of device-to-device communication and cellular communication are guaranteed; in addition, the device-to-device communication method, device and system can be suitable for device-to-device communication with a unicasting or broadcasting or multicasting mode or other broadcasting modes.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a device-to-device communication method, device and system. Background technique [0002] In a cellular communication system, when there is service transmission between two user equipments (UE, User Equipment), for example, the service data from UE1 to UE2 is first transmitted to the base station (Base Station, NodeB or NodeB) of the cell where UE1 is located through the air interface. Evolved (evolved) NodeB), the base station transmits service data to the base station of the cell where UE2 is located through the core network, and the base station of the cell where UE2 is located 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. like Figure 1a As shown, when UE1 and UE2 are located in the same cell, although the two UEs are covered by the cell of the same base sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W4/70H04W72/12H04W72/20
Inventor 吴栓栓梁枫袁弋非陈琳杨瑾袁明
Owner ZTE CORP
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