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Information sending method and apparatus

An information transmission and channel technology, applied in the field of communication, can solve the problem of inability to average the OFDM symbol load, and achieve the effect of solving the load imbalance

Active Publication Date: 2013-05-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] The present invention is made in consideration of the above-mentioned problems. For this reason, the main purpose of the present invention is to provide an information transmission mechanism, which is used to solve the problem that the load on the OFDM symbol cannot be averaged in the related art

Method used

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  • Information sending method and apparatus
  • Information sending method and apparatus

Examples

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Embodiment 1

[0056] In this embodiment, an information sending method is provided, which is used for sending a PHICH group when the number of OFDM symbols used to transmit the PHICH is 2 and the cyclic prefix is ​​a normal cyclic prefix.

[0057] Such as figure 2 As shown, the information sending method according to this embodiment includes: step S202, setting numbers for all PHICH groups, and taking two consecutive PHICH groups as a cycle according to the numbers, wherein each PHICH group only belongs to one cycle; step S204 , for each period, make a PHICH group included in it send two resource groups on the second OFDM symbol, and send one resource group on the first OFDM symbol; and make another PHICH group included in the cycle in Two resource groups are sent on the first OFDM symbol and one resource group is sent on the second OFDM symbol.

[0058] Wherein, resource groups can be mapped to OFDM symbols according to the following formula:

[0059] l'=(m+i+1)%2, N=2, formula (2)

[...

Embodiment 2

[0079] In this embodiment, an information sending method is provided, which is used to send a PHICH group when the number of OFDM symbols used to transmit the PHICH is 2 and the cyclic prefix is ​​an extended cyclic prefix.

[0080] Such as Figure 4 As shown, the information sending method according to this embodiment includes: step S402, setting numbers for all PHICH groups, and dividing all PHICH groups into PHICH group pairs in turn according to the numbers, wherein each PHICH group belongs to only one PHICH group right;

[0081] Step S402, taking two consecutive PHICH group pairs as a cycle, wherein each PHICH group pair only belongs to one cycle, and making one PHICH group pair included in the cycle send two resource groups on the second OFDM symbol, and sending one resource group on the first OFDM symbol; and causing another PHICH group pair included in the period to send two resource groups on the first OFDM symbol and send one resource group on the second OFDM symbo...

Embodiment 3

[0087] In this embodiment, an information sending method is provided, which is used to send a PHICH group when the number of OFDM symbols for transmitting the PHICH is 2.

[0088] The method includes: setting numbers for all PHICH groups;

[0089]In the case that the cyclic prefix is ​​a regular cyclic prefix, two consecutive PHICH groups are regarded as a cycle according to the numbering, wherein each PHICH group only belongs to one cycle; for each cycle, one of the PHICH groups contained in the second two resource groups on OFDM symbols and one resource group on the first OFDM symbol; Send a resource group on the second OFDM symbol;

[0090] In the case where the cyclic prefix is ​​an extended cyclic prefix, divide all the PHICH groups into PHICH group pairs in turn according to the numbering, wherein each PHICH group belongs to only one PHICH group pair; Group pairs as a cycle, where each PHICH group pair belongs to only one cycle, and a PHICH group pair included in the c...

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Abstract

The invention discloses a method for transmitting information. The method comprises the following steps that: numbers are set for all PHICH groups, and two continuous PHICH groups form a period according to the numbers, wherein each PHICH group only belongs to one period; for each period, the PHICH group included in the period transmits two resource groups on a second OFDM symbol, and transmits aresource group on a first OFDM symbol; and the other PHICH group included in the period transmits two resource groups on the first OFDM symbol, and transmits a resource group on the second OFDM symbol. Furthermore, the invention also discloses an information transmitting device. By the method and the device, the problem of load imbalance on the OFDM symbol which is used for transmitting PHICH canbe effectively solved.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to an information sending method and device for sending Physical Hybrid ARQ Indicator Channel (PHICH, PHICH for short) groups in a broadband wireless system. Background technique [0002] In an Orthogonal Product Division Multiplexing (OFDM) system, the correct / non-acknowledged (ACK / NACK) control signaling is used to indicate the correctness / error of the transmission, so as to determine whether retransmission is required . [0003] Currently, it is stipulated in the LTE system that ACK / NACK messages related to uplink data are transmitted in a Physical Hybrid ARQ Indicator Channel (PHICH). One ACK / NACK message corresponds to one PHICH. [0004] An ACK / NACK message corresponds to 1-bit original information, and then, the 1-bit original information is coded three times, and then k-fold spread spectrum is performed to become m bits, m=3×k, after binary phase-shift keying ( BPSK...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16
Inventor 戴博夏树强张峻峰郝鹏梁春丽
Owner ZTE CORP
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