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Method for resource allocation in wireless communication network and device thereof

A resource allocation and allocation device technology, applied in the direction of wireless communication, electrical components, etc., can solve the problems of large PHICH, waste of PHICH resources, that is, downlink resources, etc., and achieve the effect of reducing PHICH resources

Active Publication Date: 2015-02-11
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this PHICH resource allocation method in the prior art requires a large number of reserved PHICH resources, and in actual use, the number of schedulable grants under each TTI (Transmission Time Interval, transmission time interval) usually does not exceed 10 Therefore, the use of this PHICH resource allocation method in the prior art will waste a lot of PHICH resources, that is, downlink resources.

Method used

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  • Method for resource allocation in wireless communication network and device thereof
  • Method for resource allocation in wireless communication network and device thereof
  • Method for resource allocation in wireless communication network and device thereof

Examples

Experimental program
Comparison scheme
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example 1

[0033] For example, under the current TTI, the uplink scheduling grant in the pending scheduling grant set is {g_x1,g_x2,...,g_x15}, and the number of PHICH candidate sets corresponding to it is {k0,k1,...,k14}, if k0 and k1 are the smallest number in {k0,k1,...,k14}, that is, the number of PHICH candidate sets corresponding to k0 and k1 is the smallest, then k0 and k1 correspond to the uplink scheduling grant set in the current TTI g_x1 and g_x2 are the uplink scheduling grants with the least PHICH candidate set under the current TTI.

[0034] In step S102, the base station obtains PHICH resources that can be used by the uplink scheduling grant with the PHICH candidate set that meets the first predetermined condition.

[0035] In the following, taking the first predetermined condition that the PHICH candidate set is the smallest as an example, it is described that the base station obtains the PHICH resources that can be used by the uplink scheduling grant with the smallest PHICH c...

example 2

[0037] For example, the PHICH resource that can be scheduled in the uplink scheduling grant set under the current TTI is G={g0,g1,...,g14}, and the number of PHICH candidate sets corresponding to it is {k0,k1,...,k14 }, if k0 and k1 are the smallest number in {k0,k1,...,k14}, that is, the number of PHICH candidate sets corresponding to k0 and k1 is the smallest, then the uplink scheduling grants under the current TTI corresponding to k0 and k1 The PHICH resources g0 and g1 that can be scheduled in the set are the PHICH resources that can be used for the uplink scheduling authorization with the least PHICH candidate set.

[0038] In step S103, the base station determines the PHICH resource whose associated grant number meets the second predetermined condition from among the PHICH resources available for the uplink scheduling grant with the PHICH candidate set meeting the first predetermined condition.

[0039] Wherein, the second predetermined condition includes:

[0040] -The number...

example 3

[0044] According to the PHICH resources g0 and g1 that can be scheduled in the uplink scheduling grant set under the current TTI corresponding to k0 and k1 obtained in the above example 2, select the available PHICH resources for the uplink scheduling grant with the least PHICH candidate set. PHICH resources.

[0045] For example, the PHICH resource that can be scheduled in the uplink scheduling grant set under the current TTI is G={g0,g1,...,g14}, the PHICH index pair corresponding to g0 is {p0_0,p1_0,...}, the index pair {p0_0,p1_0,...} The associated authorization number is {m0_0,m1_0,...}, select the PHICH index pair p0_0 corresponding to the minimum value m0_0 in {m0_0,m1_0,...}. Similarly, the PHICH index pair corresponding to g1 is {p0_1,p1_1,...}, and the number of authorizations associated with the index pair {p0_1,p1_1,...} is {m0_1,m1_1,...}, select {m0_1,m1_1,...} The PHICH index pair p0_1 corresponding to the minimum value m0_1.

[0046] When the number of grants m0_...

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Abstract

The invention discloses a PHICH resource allocation method and device. The method comprises the steps that uplink scheduling authorization possessing a PHICH candidate set meeting a first predetermined condition under a current transmission time interval is acquired from a scheduling authorization set to be processed; available PHICH resource of the uplink scheduling authorization possessing the PHICH candidate set meeting the first predetermined condition is acquired; the PHICH resource of which the number of the associated authorization meets a second predetermined condition is confirmed from the available PHICH resource of the uplink scheduling authorization possessing the PHICH candidate set meeting the first predetermined condition; and the PHICH resource of which the number of the associated authorization meets the second predetermined condition is allocated to the uplink scheduling authorization possessing the PHICH candidate set meeting the first predetermined condition under the current transmission time interval. The PHICH resource required by PUSCH transmission can be reduced by the method.

Description

Technical field [0001] The present invention relates to wireless communication technology, and in particular to a method and device for resource allocation in a wireless communication network. Background technique [0002] In the LTE (Long Term Evolution) system, each PUSCH (Physical Uplink Shared Channel) transmission needs to allocate a corresponding PHICH (Physical HARQ Indicator Channel, physical HARQ indicator channel) resource to UE (User Equipment) feeds back HARQ (Hybrid Automatic Repeat Request) ACK (acknowledgement) / NACK (not acknowledgement) information. Among them, PUSCH is used for the scheduled transmission of uplink data and is the main uplink data bearer channel of the LTE physical layer, which can carry different transmission content from the upper layer, including control information, user service information, and so on. The transmission of PHICH channels in the LTE physical layer is organized in the form of PHICH groups. Multiple PHICH channels in a PHICH grou...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/29H04W72/541
Inventor 侯志华季利军
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD