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Scheduling information transmission method between devices and device thereof

A technology for dispatching information and equipment, applied in the field of communication, can solve the problems of no D2D dispatching information transmission method, no solution proposed, lack of dispatching information transmission scheme, etc.

Inactive Publication Date: 2014-06-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For D2D communication, business data is directly transmitted between UEs, and its communication method cannot follow the traditional cellular communication method. However, there is no mature D2D scheduling information transmission method in related technologies, so it is necessary to design a special D2D communication method. Scheduling Information Transmission Scheme
[0012] Aiming at the lack of a dedicated scheduling information transmission scheme for D2D communication in related technologies, no effective solution has yet been proposed

Method used

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  • Scheduling information transmission method between devices and device thereof
  • Scheduling information transmission method between devices and device thereof
  • Scheduling information transmission method between devices and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] In D2D communication, when the scheduling information between D2D is carried in the same subframe structure as PUSCH or PUCCH, the overall processing flow of the scheduling information between the device transmitting end and the device receiving end includes:

[0156] 1. The base station semi-statically configures part of the time-frequency resources for the device transmitter and device receiver in the D2D communication mode for the transmission of data information and scheduling information, and instructs the device transmitter and device receiver through RRC signaling. time-frequency resources.

[0157] 2. (1) When the scheduling information is sent by the device transmitter: at this time, the receiver of the scheduling information is the device receiver. The transmitting end of the device sends scheduling information to the receiving end of the device on a part of the time-frequency resources, including downlink scheduling information for scheduling the receiving en...

Embodiment 2

[0161] The time-frequency resource used to carry the scheduling information is a subset of the resources available for D2D communication configured by RRC. It is mapped to one or more RBs of the resources available for D2D communication configured by RRC in the frequency domain and mapped to subframes in the time domain. The first time slot or the second time slot or two time slots or SC-FDMA symbols that can be used to carry scheduling information. The so-called SC-FDMA symbols that can be used to carry scheduling information refer to time-frequency resources used to carry pilot symbols or SRS symbols, or other subsequent symbols that may have been occupied. These time-frequency resources cannot be used to carry scheduling information.

[0162] Figure 4 It is a schematic diagram of mapping method 1 adopted when the scheduling information between devices is carried according to the channel structure of PUSCH according to the preferred embodiment of the present invention, as s...

Embodiment 3

[0169] The time-frequency resources used to carry scheduling information are a subset of the available resources for D2D communication configured by RRC, and are mapped to all RBs of the available resources for D2D communication configured by RRC in the frequency domain; they are mapped to the first RB of the subframe in the time domain. One or more OFDM symbols or SC-FDMA symbols on the first slot or the second slot.

[0170] Figure 7 is a schematic diagram of mapping mode 4 adopted when the scheduling information between devices is carried according to the channel structure of PUSCH according to a preferred embodiment of the present invention, as shown in Figure 7 As shown, the base station configures RB15~RB24 for D2D communication, where the scheduling information occupies RB15~RB24 in the frequency domain, and occupies the first three OFDM symbols or SC-FDMA symbols in the first slot of the subframe in the time domain . Wherein, if the D2D communication uses a downlin...

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Abstract

The invention discloses a device-to-device scheduling information transmission method and a device thereof. The method comprises that a device emitting terminal and a device reception terminal receive configuration indication information from a network side and determine an uplink physical channel corresponding to the indication information according to the configuration indication information; and the device emitting terminal and the device reception terminal transmits scheduling information through the uplink physic information channel. The invention provides a mature device-to-device (D2D) scheduling information transmission scheme.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for transmitting scheduling information between devices. Background technique [0002] In the Long Term Evolution (LTE for short) system and the Long Term Evolution Advanced (LTE-Advanced, LTE-A for short) system, the length of each radio frame is T f =307200·T s = 10ms, a wireless frame includes 20 slots (slot), numbered from 0 to 19, each slot length T slot =15360·T s = 0.5ms. A subframe is defined as two consecutive time slots, that is, subframe i includes time slots 2i and 2i+1. Among them, the standard time length of one uplink subframe is T subframe =30720·T s =1ms. If the normal cyclic prefix (NCP for short) is used in the subframe, one uplink subframe contains 14 Single Carrier-Frequency Division Multiple Access (Single Carrier-Frequency Division Multiple Access, short for SC-FDMA) Symbol, that is, from symbol 0 to symbol 13; if the extended ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/14H04W72/12
CPCH04W72/12H04W8/14H04W8/005
Inventor 袁明毕峰吴栓栓杨瑾梁枫
Owner ZTE CORP
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