Method and apparatus for transmitting feedback information

A technology of feedback information and control information, which is applied in the field of transmission feedback information, can solve the problem of not transmitting multiple base station downlink carrier uplink control information, and achieve the effect of improving system throughput and efficiency

Active Publication Date: 2015-02-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the dual connectivity scenario, there is currently no technical solution for transmitting the uplink control information corresponding to the downlink carriers scheduled by multiple base stations

Method used

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  • Method and apparatus for transmitting feedback information
  • Method and apparatus for transmitting feedback information
  • Method and apparatus for transmitting feedback information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0339] Method 1: On the one uplink carrier, the first base station receives the uplink control information sent by the terminal through a PUCCH or PUSCH, where the uplink control information includes first uplink control information and second uplink control information.

[0340] Under this method, in implementation, after the first base station receives the uplink control information sent by the terminal on the one uplink carrier, the method further includes:

[0341] The first base station acquires the first uplink control information from the received uplink control information according to the set concatenation mode.

[0342] In the embodiment of the present invention, the set cascade processing includes but is not limited to one of the following methods:

[0343] Front and rear cascading, and interleaving and cascading in the order of parity.

[0344] It should be noted that the method for the second base station to receive the uplink control information sent by the term...

Embodiment 1

[0397] Embodiment 1. In this embodiment, the UE is connected to the base station of the macro cell and the base station of the small cell at the same time, and the uplink only works on the uplink carrier 1, and the downlink can work on the downlink carriers 1, 2 and 1 respectively scheduled by the macro cell. On the downlink carriers 3 and 4 scheduled by the small cell, see Figure 6 shown. In this embodiment, the specific working modes of the UE and each base station are as follows:

[0398] Base station side: the base station of macro cell schedules downlink data to UE on downlink carriers 1 and 2; the base station of small cell schedules downlink data to UE on downlink carriers 3 and 4;

[0399] UE side: Receive downlink data on downlink carriers 1-4 respectively, and generate corresponding ACK / NACK feedback information for each downlink carrier; send ACK / NACK corresponding to downlink carriers 1-4 on uplink carrier 1 through a PUCCH at the same time NACK feedback informa...

Embodiment 2

[0402] Embodiment 2. In this embodiment, the UE is connected to the base station of the macro cell and the small cell at the same time, and the uplink only works on the uplink carrier 1, and the downlink can work on the downlink carrier 1 scheduled by the macro cell and the small cell. On downlink carrier 2, see Figure 7shown. In this embodiment, the specific working modes of the UE and each base station are as follows:

[0403] Base station side: the base station of macro cell schedules downlink data to UE on downlink carrier 1; the base station of small cell schedules downlink data to UE on downlink carrier 2;

[0404] UE side: Receive downlink data on downlink carriers 1 and 2 respectively, and generate corresponding ACK / NACK feedback information for each downlink carrier; send corresponding downlink carrier 1 through PUCCH-1 (ie the first PUCCH) on uplink carrier 1 The ACK / NACK feedback information of the corresponding downlink carrier 2 is sent through PUCCH-2 (that is...

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Abstract

Disclosed are a feedback information transmitting method and device, used for addressing a lack of a plan for solving the problem of transmitting uplink control information corresponding to downlink carrier scheduled by a plurality of base stations in a dual connectivity scenario. A terminal of the present invention receives over a first carrier the data scheduled by a first base station, and receives over a second carrier the data scheduled by a second base station; generating first uplink control information for the first carrier, and/or generating second uplink control information for the second carrier; transmitting the generated uplink control information via PUCCH and/or PUSCH over an uplink carrier, the uplink control information comprising at least one of the first uplink control information and the second uplink control information. Therefore, a terminal transmitting uplink control information over only one carrier can send timely feedback of uplink control information corresponding to the downlink carrier scheduled by different base stations, ensuring that different base stations can timely acquire the feedback information corresponding to the downlink carrier scheduled by the different base stations.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for transmitting feedback information. Background technique [0002] With the evolution of technology and the increase of data services, in subsequent versions of the Long Term Evolution-Advance (LTE-A) system, terminals may be configured under multiple base stations (that is, dual connectivity, Dual Connectivity) work scene. [0003] For example, the terminal is configured with a master evolved Node B (Master Evolved Node B, MeNB) and at least one secondary evolved Node B (Secondary eNB, SeNB), wherein, in the Dual Connectivity application scenario, at least the S1-MME (MME Represents the mobility management entity, S1 represents the S1 interface to the MME; MME, Mobile Management Entity) terminates at the MeNB, therefore, for the core network, the MeNB can be regarded as a mobility anchor point; SeNB is responsible for Provide additional wireless re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04W72/04
CPCH04L1/16H04W72/04H04W72/1263H04L1/1671H04L1/1887H04L1/1861H04L5/0055H04W76/15H04W76/28H04W72/21H04L5/00
Inventor 高雪娟林亚男沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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