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Feedback transmission method and device

A technology for transmission method and feedback information, applied in the field of feedback transmission method and device, capable of solving problems such as feedback resource overlap

Active Publication Date: 2017-02-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the above-mentioned technical problems, the present invention provides a feedback transmission method and device, which are used to solve the problem in the prior art that the terminal uses the same resource for uplink autonomous transmission and then the feedback resource overlaps after the collision

Method used

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  • Feedback transmission method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0090]In this embodiment, the base station allocates X (eg, 10) terminals using uplink autonomous transmission to use Y (eg, 2) PRB shared resources, and the X terminals randomly use pilot cyclic shift in the Y PRBs. Specifically, the base station allocates Y PRB shared resources through a group RNTI scrambling CRC UL grant, and X terminals obtain Y PRBs that can be used through group RNTI descrambling, and X terminals do not know each other's existence .

[0091] UE1 and UE2 among the X terminals use the same cyclic shift. Since the uplink data is transmitted on the same Y PRB shared resources at the same time, the base station only demodulates the data and terminal identification information of UE1 (for example, the power of UE1 is higher than strong, or the channel condition of UE1 is better), which is equivalent to transparent transmission of UE2 and the base station does not find UE2.

[0092] The base station calculates the PHICH resource carrying the feedback ACK infor...

Embodiment 2

[0100] In this embodiment, the base station allocates X (such as 100) terminals that use uplink autonomous transmission to use Y (such as 20) PRB shared resources, wherein Y PRBs are divided into Y2 (such as 5) Shares of resources. Specifically, the base station allocates Y1 PRB shared resources through a group RNTI scrambled CRC UL grant, and X1 (such as 20) terminals obtain Y1 usable PRBs through group RNTI descrambling, and the base station also provides each terminal Terminal identification information CB_UE ID is allocated. The X1 terminals do not know each other's existence. X1 terminals randomly use pilot cyclic shift in Y1 PRBs. Similar X2 terminals randomly use pilot cyclic shift in Y2 PRBs.

[0101] UE1 and UE2 among the X1 terminals use the same cyclic shift. Since the uplink data is transmitted on the same Y1 PRB shared resources at the same time, the base station only demodulates the data and terminal identification information of UE1 (for example, the power of...

Embodiment 3

[0109] In this embodiment, the base station allocates X (eg, 10) terminals using uplink autonomous transmission to use Y (eg, 10) PRB shared resources, and the X terminals randomly use pilot cyclic shift in the Y PRBs. Specifically, the base station allocates Y PRB shared resources through a group RNTI scrambling CRC UL grant, and X terminals obtain Y PRBs that can be used through group RNTI descrambling, and X terminals do not know each other's existence . Each terminal uses the shared resources at the granularity of Y1 (for example, 2) PRBs.

[0110] UE1 among the X terminals uses the second shared resource of Y1 size in the shared resource. Due to the uncertainty of wireless channel transmission (small-scale fading), the base station only demodulates the data of UE1 but does not demodulate the The identification information of the terminal (such as C-RNTI demodulation error when C-RNTI is encoded and transmitted independently; or SR demodulation error when SR is sent indep...

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Abstract

The present invention discloses a feedback transmission method and device. The method comprises the steps of using a base station to determine the feedback information corresponding to the uplink transmission of a terminal and / or the resources bearing the feedback information at least according to the identification information of the terminal; using the base station to transmit the feedback information to the terminal by the resources bearing the feedback information. The feedback transmission method and the feedback transmission device disclosed by the present invention are used to solve the problems caused by the feedback resource overlapping in the prior art after the same resources used by the terminal at the uplink autonomous transmission collide.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a feedback transmission method and device. Background technique [0002] With the 4th generation mobile communication technology (4G, the 4th Generation mobile communication technology) long-term evolution (LTE, Long-Term Evolution) / advanced long-term evolution (LTE-Advance / LTE-A, Long-Term Evolution Advance) system commercialization is increasing The requirements for technical specifications of the next-generation mobile communication technology, that is, the fifth generation mobile communication technology (5G, the 5th Generation mobile communication technology) are getting higher and higher. It is generally believed in the industry that the next-generation mobile communication system should have the characteristics of ultra-high speed, ultra-high capacity, ultra-high reliability, and ultra-low delay transmission characteristics. The index of ultra-low latency in the 5G sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04W28/04
CPCH04L1/16H04L1/1671
Inventor 石靖夏树强戴博戴谦张雯
Owner ZTE CORP
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