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Information receive method, information transmitting method, equipment, and communication system

A technology for information reception and information transmission, which is applied in the field of communication, can solve the problem of ULsubframe resource waste, etc., and achieve the effect of reducing resource waste and increasing resources

Active Publication Date: 2014-10-29
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The embodiment of the present invention provides an information receiving and transmitting method, device and communication system to solve the problem of waste of UL subframe resources in the prior art

Method used

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  • Information receive method, information transmitting method, equipment, and communication system
  • Information receive method, information transmitting method, equipment, and communication system
  • Information receive method, information transmitting method, equipment, and communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Assume that in the solution of Embodiment 1, UE2 is figure 1 The second type of UL subframe receives D2D information from UE1, that is, UE2 receives D2D information on the previous UL subframe of two adjacent UL subframes. The specific solution of the first embodiment is as follows: image 3 shown, including the following steps:

[0082] Step 101: UE2 determines the last duration t1 in the previous UL subframe of two adjacent UL subframes, and the t1 is less than the length of one SC-FDMA symbol in the UL subframe and not less than 20us.

[0083] Step 102: UE2 uses the t1 as the transition time from the receiving state to the transmitting state.

[0084] Since UE2 is in figure 1 The D2D information from UE1 is received on the previous UL subframe of the second type of UL subframe. Therefore, after receiving the D2D information on the previous UL subframe and before entering the next UL subframe, UE2 needs to read from The receiving state is converted to the transmittin...

example 1

[0094] Such as Figure 4 As shown, taking the second type of UL subframe and the UL subframe using a regular CP as an example, the schematic diagram of eNodeB, UE1 and UE2 configuring information about time slot resources, from Figure 4 It can be seen in:

[0095] As the receiver of D2D information, UE2 opens up the last period of time t1=1120*Ts=36.7583us on UL subframe1. The other time slot resources in UL subframe1 except t1 are divided into 13 SC-FDMA symbols. Since the length occupied by t1 is less than a standard SC-FDMA symbol, the length of the divided 13 SC-FDMA symbols is longer than the standard SC -FDMA symbol, in order to match the existing standard in D2D transmission, 2048*Ts=66.67us in the length of each divided SC-FDMA symbol (that is, the resource carrying information in the standard SC-FDMA symbol) can be used as For resources carrying D2D information, the remaining resources in each divided SC-FDMA symbol are used as the length of the CP in the SC-FDMA (...

Embodiment 2

[0099] Assuming that in the solution of Embodiment 2, UE2 is figure 1 The third type of UL subframe receives D2D information from UE1, that is, UE2 receives D2D information on the last UL subframe of two adjacent UL subframes. The specific solution of the second embodiment is as follows: Figure 5 shown, including the following steps:

[0100] Step 301: UE2 determines the initial duration t2 in the last UL subframe of two adjacent UL subframes, where t2 is less than the length of one SC-FDMA symbol in the UL subframe and not less than 20us.

[0101] Step 302: UE2 takes the t2 as the transition time from the transmitting state to the receiving state.

[0102] Since UE2 is in figure 1 The D2D information from UE1 is received on the latter UL subframe of the third type of UL subframe. Therefore, after UE2 performs the transmitting operation on the previous UL subframe, it needs to transmit The state transitions to the receiving state. Therefore, t2 is opened at the beginning ...

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Abstract

The invention discloses an information receive method, an information transmitting method, equipment, and a communication system. Therefore, a problem of UL subframe resource wasting caused by occupation of at least one single-carrier frequency division multiple access (SC-FDMA) symbol as conversion time during device-to-device (D2D) information receiving by UE at one of at least two adjacent UL subframes in D2D communication is solved. According to the scheme in the embodiment of the invention, conversion time that is less than one SC-FDMA symbol length but not less than 20 microseconds is opened up in a UL subframe for D2D information receiving. Compared with the current D2D communication process, because the conversion time of the UL subframe for D2D information receiving by the UE is reduced under the circumstances that the UE state conversion condition is met, real resources for D2D information receiving at the UL subframe can be effectively increased, thereby reducing the resource wasting.

Description

technical field [0001] The present invention relates to the communication field, in particular to an information receiving method, device and communication system. Background technique [0002] In the current LTE TDD system, the frame structure includes three types of subframes: downlink subframe (DL subframe), uplink subframe (UL subframe) and special subframe (Special subframe), where Special subframe Including Uplink Pilot Channel Time Slot (UpPTS), Conversion Guard Time Slot (GP) and Downlink Pilot Channel Time Slot (DwPTS). [0003] Such as figure 1 As shown, it is a schematic diagram of 7 uplink and downlink configurations of the frame structure in the LTE TDD system. exist figure 1 In the uplink and downlink configurations shown in 7, the UL subframe can be divided into the following four types according to the types of subframes before and after: [0004] Type 1 UL subframe: the adjacent previous subframe is a Special subframe, and the adjacent subsequent subfram...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W72/04
Inventor 王飞姜大洁郑毅
Owner CHINA MOBILE COMM GRP CO LTD
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