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Method and terminal for sending RI (Rank Indication) information with uplink sub-frame

A technology of rank indication and subframe, applied in the field of LTE, can solve the problem of waste of resources and achieve the effect of saving physical resources

Active Publication Date: 2011-05-04
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Obviously, the above implementation method is a waste of resources

Method used

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  • Method and terminal for sending RI (Rank Indication) information with uplink sub-frame
  • Method and terminal for sending RI (Rank Indication) information with uplink sub-frame
  • Method and terminal for sending RI (Rank Indication) information with uplink sub-frame

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Embodiment Construction

[0045] The core of the present invention is that: the UE selects the downlink subframe with the smallest value of m and the smallest value of m to obtain a relatively small PUCCH logical resource index, thereby saving the physical resources used by the PUCCH format 1 / 1a / 1b; in addition, making full use of The resource transmission RI implicit in the PUCCH format 1 / 1a / 1b is eliminated, thereby saving the physical resources of the PUCCH format 2 / 2a / 2b.

[0046] Such as Figure 7 Shown, be method flowchart of the present invention:

[0047] Step 100, the UE obtains the set K{k of the current uplink subframe n according to the uplink and downlink ratio 1 , k 2 ...k m}, where m is the index of the set K, less than or equal to M-1; see Image 6 , the relationship between the uplink and downlink ratio and the set K can be obtained, M is the number of elements in the set K, and the physical meaning is that the uplink subframe needs to feed back the maximum number of ACK / NACK infor...

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Abstract

The invention discloses a method and terminal for sending RI (Rank Indication) information with an uplink sub-frame. The method comprises the following steps: UE (User Equipment) obtains a set K containing multiple k values according to the current uplink-downlink ratio, detects whether a downlink sub-frame n-km occupies a PDCCH (Physical Downlink Control Channel) and detects the polymerization degree of CCE (Control Channel Element) occupying the PDCCH, wherein m is an index of the set K; the UE obtains a logic resource index hidden in a PUCCH (Physical Uplink Control Channel) according to the downlink sub-frame occupying the PDCCH and the polymerization degree of the CCE; and when the polymerization degree is greater than 1, the UE selects a physical resource corresponding to any logic resource index hidden in the PUCCH and sends RI information to a base station through the PUCCH on the uplink sub-frame n. Through the invention, the resources hidden in the PUCCH format 1 / 1a / 1b are sufficiently used for sending RI, thereby saving the physical resources of the PUCCH format 2 / 2a / 2b.

Description

technical field [0001] The present invention relates to LTE (Long Term Evolution) technology, in particular to a method for sending rank indication RI information by using an uplink subframe, and a terminal for sending RI information by using an uplink subframe. Background technique [0002] In the LTE system, the application of HARQ (hybrid automatic repeat quest) technology improves the reliability of communication. It decides whether to retransmit the old data through the feedback ACK / NACK (acknowledgment / non-acknowledgement) information. For downlink HARQ, ACK / NACK is fed back on the uplink PUSCH (Physical Uplink Shared Channel) or PUCCH (Physical Uplink Control Channel). [0003] For TDD (Time Division Duplexing) system, the system frame structure is as attached figure 1 As shown, the asymmetry of uplink and downlink subframes determines that one uplink subframe may need to feed back ACK / NACK of several downlink subframes. For specific subframe configuration, see fi...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04W72/08
CPCH04L1/0027H04L1/06H04W72/044
Inventor 安豆娃
Owner SANECHIPS TECH CO LTD
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