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Method for reducing HARQ retransmission time interval in multi-carrier system and base station

A multi-carrier system and time interval technology, applied in the field of communication, can solve problems such as increasing the manufacturing cost of terminal equipment, and achieve the effect of reducing retransmission delay and improving transmission efficiency

Active Publication Date: 2010-07-21
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0016] The disadvantage of the existing technology is that, for the long-term evolution multi-carrier system, when multi-carrier aggregation is used, the data on each downlink carrier will be independently encoded and decoded. At this time, the maximum number of HARQ processes in the system will increase with the number of aggregated carriers. It grows exponentially, and the more processes in the system, the larger the RTT, so the larger the capacity of the terminal memory is required, which increases the manufacturing cost of the terminal equipment

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  • Method for reducing HARQ retransmission time interval in multi-carrier system and base station
  • Method for reducing HARQ retransmission time interval in multi-carrier system and base station
  • Method for reducing HARQ retransmission time interval in multi-carrier system and base station

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Embodiment Construction

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0042] The main purpose of the present invention is to reduce the maximum number of HARQ processes and RTT in the system by increasing the number of subframes with uplink resources in the system, so as to meet the requirements of the total ratio of uplink and downlink subframes in the system. The invention makes full use of the multi-carrier characteristics of the system, reduces the HARQ retransmission delay in the system, and thus improves the transmission efficiency of the system.

[0043] Such as image 3 As shown, it is a flowchart...

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Abstract

The invention provides a method for reducing an hybrid automatic repeat request (HARQ) retransmission time interval in a multi-carrier system, which comprises the following steps that: a base station carries out aggregation on a plurality of carriers, wherein the allocation of at least one carrier is different from that of other carriers so as to increase the distribution of uplink resources on a time domain in a system; and the base station sends data on the aggregated carriers. By increasing the number of the subframes of the uplink resources in the system, the method reduces the HARQ maximum processes and round-trip time (RTT) in the system while guaranteeing to meet the requirements of the ratio of total uplink subframes and total downlink subframes of the system. The method sufficiently utilizes the multi-carrier property of the system and reduces the HARQ retransmission delay in the system so as to improve the transmission efficiency of the system.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and a base station for reducing HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) RTT (Round-trip Time, retransmission time interval) in a multi-carrier system. Background technique [0002] In the long-term evolution multi-carrier mobile communication system, such as the LTE-Advanced (long-term evolution multi-carrier) system, it is necessary to provide a higher peak rate through a larger transmission bandwidth to meet the needs of users, but the expansion of the transmission bandwidth is subject to operational constraints. Frequency resources owned by the provider. For the Long Term Evolution multi-carrier system, in order to support a wider system bandwidth than the LTE system, such as 100MHz, one possibility is to directly allocate 100M bandwidth spectrum. However, due to the limited frequency resources owned by operators, in orde...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04W56/00H04W72/04H04L27/26H04L1/18
Inventor 林亚男肖国军潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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