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Uplink authorization method, device and system

A technology of row subframe and subframe, applied in the field of device and system, and uplink authorization method, can solve the problem of inability to realize uplink and downlink time slot allocation and the like

Inactive Publication Date: 2016-03-16
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the above-mentioned uplink authorization method can well realize the allocation ratio 0 scheme, but cannot achieve a higher ratio of uplink and downlink time slot allocation.

Method used

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  • Uplink authorization method, device and system
  • Uplink authorization method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] In this embodiment, the authorized meaning of the ULindex combination field in DCI0 of subframe 0 is as follows Figure 5 As shown, the authorized meaning of the ULindex combination field in DCI0 of subframe 1 is as follows Figure 6 As shown, the subframe mapping corresponding to the value of the ULindex combination field is as follows Figure 7 shown.

[0077] For a UE, 1, 2, 3 or 4 DCI0 combinations can be used in a downlink subframe to indicate grants of multiple uplink subframes, and the grants of these scheduled DCI0s for uplink subframes cannot be repeated.

Embodiment 2

[0079] This embodiment improves the ULHARQ configuration of the TD-LTE standard, such as Figure 8 shown, adding figure 1 The number of ULHARQ process configurations in the configuration 7 scheme is 12.

[0080] The timing of the ULHARQ process is as follows Figure 9 As shown, in the figure, HPi represents ULHARQ process i, and the value of i is [0,11]; N represents the air interface frame number. For LTE, the value range is [0,1020], that is, the value range of N+3 is [3,1023]. It can be seen that, for the ratio of 8:1 uplink and downlink time slots, the number of ULHARQ processes is 12.

[0081] Define all the uplink subframes authorized by the ULindex combination field in each DIC0 as a scheduling window, and send information to the UE through the PHICH resource and DCI0 corresponding to the scheduling window, where the PHICH resources corresponding to each uplink subframe correspond to each uplink CRC result of the subframe. This embodiment is based on Embodiment 1. ...

Embodiment 3

[0083]On the basis of Embodiment 2, this embodiment further describes how retransmission is handled. In any case, this embodiment performs non-adaptive retransmission through the PHICH, specifically:

[0084] On the base station side:

[0085] For a scheduling window of a UE, the base station sends information to the UE through the PHICH resource corresponding to the scheduling window according to the CRC result of each uplink subframe in the scheduling window.

[0086] On UE side:

[0087] The UE checks the PHICH feedback corresponding to the uplink subframe of the scheduling window, obtains the information in the PHICH, and for the ULHARQ process corresponding to the uplink subframe of the scheduling window, if the corresponding PHICH value is NACK, the UE retransmits the ULHARQ process , and the physical resource used for retransmission is the same as the latest transmission of the ULHARQ process, if the value of the corresponding PHICH is ACK, no transmission is performe...

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Abstract

The invention proposes an uplink authorization method, and the method comprises the steps that a base station dispatches one or more uplink subframes through one DCI0; a ULindex combined field in the DCI0 is used for indicating the authorization of one or more uplink subframes; the ULindex combined field consists of a ULindex combined field of a DCI0 in a TD-LTE protocol and a Reserved field; and each bit in the ULindex combined field indicated the authorization of one uplink subframe. The invention also proposes a corresponding uplink authorization base station device, a UE device, and a system. The method can achieve high-proportion uplink and downlink time slot ratio through corresponding protocol stack reconstruction.

Description

technical field [0001] The present invention relates to the field of LTE communication, in particular to an uplink authorization method, device and system. Background technique [0002] In private network communications, especially in emergency communications, customers often have far greater demand for uplink bandwidth than downlink bandwidth. For example, if a fire breaks out in a certain area, a large number of video services need to be uploaded temporarily. At present, the TD-LTE standard supports 7 kinds of uplink and downlink time slot ratios (namely figure 1 schemes with a middle ratio of 0 to 6), but provide a maximum uplink and downlink time slot ratio of 3:1 (that is, figure 1 In the configuration ratio 0 scheme), for 20MHz bandwidth, the maximum uplink peak rate is about 30Mbps, which is still limited for emergency communication scenarios. Therefore, it is hoped that the LTD network can support a larger ratio of uplink and downlink time slot ratio requirements,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/16H04L1/18H04W72/04
Inventor 谭源春张文忠黄其华王晨李楚浩
Owner BEIJING XINWEI TELECOM TECH