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Method and device for resource and power allocation of physical hybrid retransmission indicator channel

A technology of retransmission indication and physical mixing, applied in the field of PHICH resource and power allocation, can solve the problems of complex PHICH resource allocation, and achieve the effect of improving resource utilization.

Active Publication Date: 2018-01-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resource allocation of the existing PHICH is more complicated

Method used

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  • Method and device for resource and power allocation of physical hybrid retransmission indicator channel
  • Method and device for resource and power allocation of physical hybrid retransmission indicator channel
  • Method and device for resource and power allocation of physical hybrid retransmission indicator channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 shown, including the following steps:

[0046] Step 1, configure the PHICH resource set, and the PHICH resource set is used to mark whether the PHICH resource is available;

[0047] Step 2, perform the following resource and power allocation operations for each user to be allocated PHICH resources:

[0048] Select one of all available cyclic shift values ​​for the user, and perform the following cyclic operation: use the selected cyclic shift value to calculate the PHICH resource until the following two conditions are met:

[0049] Condition 1: the PHICH resource obtained by calculating the selected cyclic shift value is available;

[0050] Condition 2: If the user uses the PHICH resource, after adjusting the PHICH power of the user and / or other users in the group, the total PHICH power of the PHICH group does not exceed the upper limit of the power of the PHICH group;

[0051] Allocate the available PHICH resource and the adjusted PHICH power to the...

Embodiment 2

[0062] For the PHICH resource allocation method under Normal CP in the LTE system, the flow of this embodiment is as follows figure 2 shown, including the following steps:

[0063] Step S101: Create a group whose size is the maximum number of groups x the maximum number of users that can be accommodated in the group The resource matrix PHICH_ASSI, and initialized to 0, this matrix is ​​used to mark whether PHICH resources are available, where is the PHICH spreading factor, under LTE conventional CP The value is 4. In this embodiment, if a certain PHICH resource is available, the value of the corresponding position of the PHICH resource in the resource matrix is ​​"0", otherwise the value is "1"; create a The power matrix PHICH_Power, initialized to all 0, is used to mark the power of the allocated user; create a size of The precalculated power matrix PreASSI_Power, initialized to all 0, is used to record the variables during power precalculation; create a size of Th...

Embodiment 3

[0107] This embodiment describes the resource and power allocation device for implementing the methods of Embodiment 1 and Embodiment 2, such as image 3 As shown, including configuration module, resource and power allocation module, where:

[0108] The configuration module is configured to configure a PHICH resource set, and the PHICH resource set is used to mark whether the PHICH resource is available;

[0109] The resource and power allocation module is configured to perform the following resource and power allocation operations for each user to be allocated PHICH resources:

[0110] Select one of all available cyclic shift values ​​for the user, and perform the following cyclic operation: use the selected cyclic shift value to calculate the PHICH resource until the following two conditions are met: Condition 1: the selected cyclic shift value is calculated PHICH resource is available, condition 2: If the user uses the PHICH resource, after adjusting the PHICH power of the...

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Abstract

A method for allocating physical hybrid-ARQ indicator channel (PHICH) resource and power comprises: configuring a PHICH resource set; for each user subjected to PHICH resource allocation: selecting one of all available cyclic shift values to perform a cyclic operation until the following two conditions are met: 1) a PHICH resource calculated according to the selected cyclic shift value is available, 2) if the user uses the PHICH resource, the total PHICH power of a PHICH group does not exceed an upper limit after PHICH power adjustment is performed on the user and / or other users in the group; allocating the available PHICH resource and the adjusted PHICH power to the user, and marking that the PHICH resource is unavailable; until no resource in the PHICH resource set is available or the resource and power allocation operation is performed on each user subjected to the PHICH resource allocation.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a PHICH (Physical hybrid-ARQ indicator channel, physical hybrid retransmission indicator channel) resource and power allocation method and device. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the PHICH carries the ACK (Acknowledgment, confirmation response) / NACK (Negative Acknowledgment, negative response) response made by the base station to the uplink PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) information. ACK / NACK information of multiple users mapped to the same group of resource elements constitutes a PHICH group. Under the normal CP (cyclic prefix, cyclic prefix), a PHICH group can accommodate 8 users, and a PHICH group under the extended CP can accommodate 4 users. ACK / NACK information belonging to the same group is distinguished by different orthogonal sequences. [0003] The LTE sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/18H04W72/04
CPCH04W72/0473
Inventor 雷超琴李俊
Owner ZTE CORP
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