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Indication method for large bandwidth system physical ascending control channel

A physical uplink and control channel technology, applied in the field of mobile wireless communication, can solve problems such as inability to correspond one-to-one uplink control channels, resource index cannot work correctly, etc.

Active Publication Date: 2012-07-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, LTE-Advanced is likely to have different numbers of available component carrier frequencies for uplink and downlink in FDD duplex mode, so that each downlink component carrier frequency cannot correspond to the uplink control channel PUCCH (Physical Uplink Control Channel, Physical uplink control channel), the PUCCH resource index already designed by LTE cannot work correctly

Method used

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  • Indication method for large bandwidth system physical ascending control channel
  • Indication method for large bandwidth system physical ascending control channel
  • Indication method for large bandwidth system physical ascending control channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] LTE-Advanced works in FDD duplex and TDD duplex mode,

[0045] For LTE-Advanced users, the PUCCH resource index of the uplink HARQ-ACK corresponding to the dynamically scheduled PDSCH is the first or last CCE index of the PDCCH allocated to the user on the scheduled downlink subframe combined with the scheduling of the PDSCH The downlink component carrier frequency index where the PDCCH is located is implicitly mapped.

[0046] Mapping methods can be:

[0047] Where i=j≤I, or i=X, or i=(j+X) mod I. is the PUCCH resource corresponding to the PDCCH dynamically scheduled by the user on the j-th downlink component carrier frequency in the i-th uplink component carrier frequency, and the index number of the PUCCH resource in this component carrier frequency; n CCE，j is the first or last CCE index used to transmit the PDCCH in the jth downlink component carrier frequency corresponding to the dynamic scheduling of the user; Configured by high layers, it indicates the nu...

Embodiment 2

[0049] When k>1, that is, when one uplink component carrier frequency corresponds to multiple downlink component carrier frequencies, LTE-Advanced works in FDD duplex and TDD duplex mode, and for LTE-Advanced users, dynamic scheduling is performed on a certain downlink component carrier frequency The uplink component carrier frequency index of the PUCCH resource where the PDSCH in the uplink corresponding to the HARQ-ACK is located is determined by the downlink component carrier frequency index where the PDSCH is located, and the PUCCH resource index in the uplink component carrier frequency is determined by scheduling Mapped with the first or last CCE index of the PDCCH corresponding to the PDSCH on the downlink subframe.

[0050] The mapping method is:

[0051] where i=(j+X) mod I, or, i=X. The PUCCH resource corresponding to the PDCCH dynamically scheduled by the user on the j-th downlink component carrier frequency is in the i-th uplink component carrier frequency, and ...

Embodiment 3

[0053] LTE-Advanced works in TDD duplex mode. For LTE-Advanced users, the mapping method is:

[0054] The uplink component carrier frequency index where the PUCCH resource for sending HARQ-ACK in the uplink corresponding to the PDSCH dynamically scheduled in a certain downlink component carrier frequency is obtained by mapping the downlink component carrier frequency index where the PDCCH scheduling the PDSCH is located. The PUCCH resource index in the uplink component carrier is obtained through block interleaving and mapping.

[0055] For the scheduling subframe that needs feedback on the jth downlink component carrier frequency, its PUCCH resource is located in the ith uplink component carrier frequency (i=j, or, i=X, or, i=(j+X)mod 1), the calculation method of its PUCCH resource index is as follows: the terminal first selects a value p from {0, 1, 2, 3} j , so that the condition where n CCE，j is the index of the first CCE where the PDCCH of the last downlink subframe ...

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Abstract

The invention provides a PUCCH indication method for large bandwidth system. Physical uplink control channel PUCCH resource transmits uplink mixed automatic retransmission request confirmation and corresponds to dynamically dispatched physical downlink sharing channel; index number of uplink component carrier frequency of physical uplink control channel PUCCH resource is mapped by downlink component carrier frequency index of physical downlink control channel PDCCH for dispatching the PDSCH to acquire, or a fixed value, or notified by high level signaling or physical signaling. Index number of uplink component carrier frequency of PUCCH resource for uplinkly transmitting HARQ-ACK corresponding to semi-static scheduled PDSCH is mapped and acquired by downlink component carrier frequency index number of PDSCH or notified by high level signaling. The invention guarantees compatibility of LTE-Advanced system and LTE Release-8 system, facilitates to increase system capacity and schedulingagility of LTE-Advanced system.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to an indication method of a physical uplink control channel in a large bandwidth wireless communication system. Background technique [0002] figure 1 The frame structure of the FDD (Frequency Division Duplex, frequency division duplex) mode and the TDD (Time Division Duplex, time division duplex) mode of the LTE (Long Term Evolution, long term evolution) system is shown. In the frame structure of FDD mode, a 10ms radio frame (wireless frame) consists of twenty slots (time slots) with a length of 0.5ms and numbers 0 to 19, and time slots 2i and 2i+1 form a subframe with a length of 1ms (subframe)i. In the frame structure of the TDD mode, a 10ms radio frame (wireless frame) is composed of two halfframes (half frames) with a length of 5ms, and a half frame includes five subframes (subframes) with a length of 1ms. Subframe i is defined as two time slots 2i and 2i+1 with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/04H04W80/00H04B7/26H04L69/14
CPCH04L5/001H04L69/32H04L29/08009H04W72/00H04L1/1854H04W72/12H04L1/1861H04W28/04H04L5/0055H04L5/0053H04L69/323
Inventor 张禹强戴博郝鹏梁春丽喻斌马志锋
Owner ZTE CORP
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