CN101505209B - Information sending method and apparatus - Google Patents
Information sending method and apparatus Download PDFInfo
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- CN101505209B CN101505209B CN 200810006248 CN200810006248A CN101505209B CN 101505209 B CN101505209 B CN 101505209B CN 200810006248 CN200810006248 CN 200810006248 CN 200810006248 A CN200810006248 A CN 200810006248A CN 101505209 B CN101505209 B CN 101505209B
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Abstract
The invention provides a method for transmitting information. The method comprises the following steps that: numbers are set for all PHICH groups, and all the PHICH groups are pairwise classified into PHICH group pairs according to the numbers, wherein each PHICH group only belongs to one PHICH group pair; for each PHICH group pair, the included PHICH groups with even numbers are transmitted on the first two subcarriers of each target resource group mapped by the PHICH group pair, and the included PHICH groups with odd numbers are transmitted on the last two subcarriers of each target resource group; or the PHICH groups with the odd numbers included in each PHICH group pair are transmitted on the first two subcarriers of each target resource group mapped by the PHICH group pair, and the PHICH groups with the even numbers included in each PHICH group pair are transmitted on the last two subcarriers of each target resource group mapped by the PHICH group pair.
Description
Technical field
The present invention relates to the communications field, and especially, relate to the method for sending information and the device that are used for sending physical mixing retransmission indicating chanel (Physical Hybrid ARQ Indicator Channel, PHICH is referred to as PHICH) group in the broadband wireless system.
Background technology
The develop rapidly of digital communication system is had higher requirement to the reliability of data communication, yet, under abominable channel, especially in high data rate or the high-speed mobile environment, multipath interference and Doppler frequency shift etc. seriously affect systematic function, effective error-control technique, especially mixing automatic repeat request (Hybrid Automatic Repeat Request, HARQ) technology just becomes the focus that the communications field endeavours to study.
In quadrature product division multiplexing (OFDM) system, by correctly reply/wrong responses (Acknowledged/Non-acknowledged, ACK/NACK) control signal represents to transmit correct/error, need to judge whether to retransmit with this.
At present, stipulate in the LTE system that the ACK/NACK message that upstream data is relevant is transmitted in PHICH, the corresponding PHICH of ACK/NACK message.
An ACK/NACK message is corresponding to 1 bit raw information, then, 1 bit raw information is carried out 3 codings of repetition, carry out again k times of spread spectrum, become the m bit,, through binary phase shift keying (BPSK) modulation, be mapped on the I road or Q road of 3 resource subcarriers that group comprises, each resource group comprises 4 subcarriers.When Cyclic Prefix is the regular circulation prefix; When Cyclic Prefix is extended cyclic prefix,, and the PHICH resource is divided timing, distributes take 3 resource groups as unit, corresponding 3 the resource groups of PHICH.So, when Cyclic Prefix is the regular circulation prefix, a PHICH group can be by spreading code and 8 PHICH of I/Q road position multiplex, corresponding 12 subcarriers of PHICH group, be mapped on 3 resource groups, when Cyclic Prefix is extended cyclic prefix, a PHICH group can be by spreading code and 4 PHICH of I/Q road position multiplex, corresponding 6 subcarriers of PHICH group, be mapped on 6 subcarriers in 3 resource groups, above-mentioned 6 subcarriers are comprised of the first two subcarrier of each target resource group, perhaps, are comprised of latter two subcarrier of each target resource group.
Therefore, when Cyclic Prefix was extended cyclic prefix, 3 resource groups can be organized by corresponding two PHICH, and when Cyclic Prefix was the regular circulation prefix, 3 resource groups can only corresponding PHICH group.
But, in present LTE standard, only provided the mapping method that PHICH organizes the resource group, be extended cyclic prefix and regular circulation prefix and do not distinguish Cyclic Prefix, 3 resource groups are corresponding PHICH group all.
It is mapping situation in the situation of extended cyclic prefix that Fig. 1 shows at Cyclic Prefix.As shown in Figure 1, when Cyclic Prefix is extended cyclic prefix, two PHICH resource groups are arranged, according to original PHICH frequency domain sending method, corresponding 3 the resource groups of resource group, two PHICH resource groups just need to be mapped on 6 different resource groups, suppose, the set of resources of shining upon Wei #1, #3, on #5, #7, #9 and the #11, corresponding physical sub-carrier is #6, #7, #9, #10, #18, #19, #21, #22, #30, #31, #33, #34, #42, #43, #45, #46 and #54, #55, #57, #58, and #66, #67, #69, #70.Can find out that in this case, be equivalent to only utilize half resource in each resource group, second half resource is idle.
This mode obviously can cause the waste of ample resources, yet, the present technical scheme that not yet proposes to avoid this wasting of resources.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of information transmit mechanism, to solve the problem of the wasting of resources in the correlation technique.
According to embodiments of the invention, a kind of method for sending information is provided, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix.
The method comprises: whole PHICH groups are arranged numbering, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group;
Right for each PHICH group, the PHICH group that is numbered even number that wherein comprises is sent at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that each PHICH group centering is comprised send at latter two subcarrier of each target resource group; Perhaps
The PHICH group that is numbered odd number that each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered even number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping.
Wherein, the quantity that last PHICH of PHICH group centering that whole PHICH groups successively in twos division is obtained organizes the PHICH group of centering is one or two.
In addition, each PHICH group is 3 to the quantity of the target resource group of mapping, and it is right that each target resource group only is mapped to a PHICH group.
According to another embodiment of the present invention, provide a kind of method for sending information, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix.
The method comprises: whole PHICH groups are arranged numbering, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group; Right for each PHICH group, the PHICH group that is numbered even number that wherein comprises is sent at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that each PHICH group centering is comprised send at PHICH group latter two subcarrier to each target resource group of mapping.
Wherein, the quantity that last PHICH of PHICH group centering that whole PHICH groups successively in twos division is obtained organizes the PHICH group of centering is one or two.
In addition, each PHICH group is 3 to the quantity of the target resource group of mapping, and it is right that each target resource group only is mapped to a PHICH group.
According to still a further embodiment, provide a kind of method for sending information, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix.
The method comprises: whole PHICH groups are arranged numbering, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group; The PHICH group that is numbered odd number that each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered even number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping.
Wherein, the quantity that last PHICH of PHICH group centering that whole PHICH groups successively in twos division is obtained organizes the PHICH group of centering is one or two.
In addition, each PHICH group is 3 to the quantity of the target resource group of mapping, and it is right that each target resource group only is mapped to a PHICH group.
According to still a further embodiment, a kind of information transmitting apparatus is provided, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix, and this device comprises that group is to dividing module and sending module, wherein:
Group is used for whole PHICH groups are arranged numbering to dividing module, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, and wherein, it is right that each PHICH group only belongs to a PHICH group;
The PHICH group that is numbered even number that sending module is used for each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping; Perhaps
The PHICH group that is numbered odd number that sending module is used for each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered even number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping.
By technique scheme of the present invention, can effectively reduce at Cyclic Prefix is idling-resource in the situation of extended cyclic prefix, has avoided the waste of resource, Effective Raise the utilance of resource.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the mapping schematic diagram according to the PHICH of the extended cyclic prefix of correlation technique;
Fig. 2 is the flow chart according to the method for sending information of the inventive method embodiment two;
Fig. 3 is the schematic diagram according to resource group mapping in the method for sending information of the inventive method embodiment two;
Fig. 4 is the flow chart according to the method for sending information of the inventive method embodiment three; And
Fig. 5 is the block diagram according to the information transmitting apparatus of apparatus of the present invention embodiment.
Embodiment
Embodiment of the method one
In the present embodiment, provide a kind of method for sending information, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix.
The method comprises: whole PHICH groups are arranged numbering, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group;
Right for each PHICH group, the PHICH group that is numbered even number that wherein comprises is sent at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that each PHICH group centering is comprised sends (that is, as shown in Figure 3) at latter two subcarrier of each target resource group; Perhaps
The PHICH group that is numbered odd number that each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered even number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping.
Wherein, the quantity that last PHICH of PHICH group centering that whole PHICH groups successively in twos division is obtained organizes the PHICH group of centering is one or two.
In addition, each PHICH group is 3 to the quantity of the target resource group of mapping, and it is right that each target resource group only is mapped to a PHICH group.
That is to say, for extended cyclic prefix, when reality realizes the method, with all PHICH group serial number (#0, #1 ..., #N), then, from first PHICH group, continuous two PHICH group is right as a PHICH group, and last PHICH group is to can only comprising a PHICH group, all PHICH groups are not identical to the PHICH group that comprises, and PHICH organized being mapped on 3 resource groups again.
And in the end PHICH group centering only comprises in the situation of a PHICH group, equally according to the parity of this PHICH group # and before the mapping ruler of a plurality of PHICH group centering PHICH groups shine upon accordingly.
Embodiment of the method two
In the present embodiment, provide a kind of method for sending information, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix.
As shown in Figure 2, comprise according to the method for sending information of present embodiment: step S202, whole PHICH groups are arranged numbering, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group; Step S204, right for each PHICH group, the PHICH group that is numbered even number that wherein comprises is sent at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that each PHICH group centering is comprised send at PHICH group latter two subcarrier to each target resource group of mapping.
Wherein, the quantity that last PHICH of PHICH group centering that whole PHICH groups successively in twos division is obtained organizes the PHICH group of centering is one or two.
In addition, each PHICH group is 3 to the quantity of the target resource group of mapping, and it is right that each target resource group only is mapped to a PHICH group.
Particularly, as shown in Figure 3, when Cyclic Prefix is extended cyclic prefix, two PHICH group is arranged, adopt the method according to this invention after, two PHICH resource groups that 3 resource groups can corresponding PHICH group centering, two PHICH money groups can be mapped on 3 different resource groups, suppose the set of resources of shining upon Wei #1, #5, on the #9, corresponding physical sub-carrier is #6, #7, #9, #10, #30, #31, #33, #34 and #54, #55, #57, #58.PHICH#0 is even-numbered, then is mapped on the first two subcarrier of resource group #1, #5 and #9; And PHICH#1 is odd-numbered, then is mapped on latter two subcarrier of resource group #1, #5 and #9.
Wherein, after resource group #1 was mapped to and belongs to same PHICH money group right PHICH group #0 and #1, other PHICH group was not to just shining upon this resource group #1.
Embodiment of the method three
In the present embodiment, provide a kind of method for sending information, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix.
As shown in Figure 4, comprise according to the method for sending information of present embodiment: step S402, whole PHICH groups are arranged numbering, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group; Step S404, the PHICH group that is numbered odd number that each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered even number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping.
Wherein, the quantity that last PHICH of PHICH group centering that whole PHICH groups successively in twos division is obtained organizes the PHICH group of centering is one or two.
In addition, each PHICH group is 3 to the quantity of the target resource group of mapping, and it is right that each target resource group only is mapped to a PHICH group.
The mapping relations of this moment equally can be with reference to Fig. 3, only need be revised as to be mapped to PHICH#0 on latter two subcarrier of resource group #1, #5 and #9 and PHICH#1 to be mapped on the first two subcarrier of resource group #1, #5 and #9 to get final product.
Device embodiment
In the present embodiment, a kind of information transmitting apparatus is provided, and being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix, as shown in Figure 5, this device comprises that group is to dividing module 502 and sending module 504, wherein:
Group is used for whole PHICH groups are arranged numbering to dividing module 502, and it is right according to numbering whole PHICH groups to be divided into the PHICH group successively in twos, and wherein, it is right that each PHICH group only belongs to a PHICH group;
The PHICH group that is numbered even number that sending module 504 is used for each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping; Perhaps
The PHICH group that is numbered odd number that sending module 504 is used for each PHICH group centering is comprised sends at the first two subcarrier of PHICH group to each target resource group of mapping, and the PHICH group that is numbered even number that each PHICH group centering is comprised sends at PHICH group latter two subcarrier to each target resource group of mapping.
In sum, by means of technical scheme of the present invention, can effectively reduce at Cyclic Prefix is idling-resource in the situation of extended cyclic prefix, has avoided the waste of resource, Effective Raise the utilance of resource.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. method for sending information, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix, it is characterized in that described method comprises:
Whole PHICH groups are arranged numbering, and it is right according to described numbering described whole PHICH groups to be divided into the PHICH group successively in twos, wherein, it is right that each PHICH group only belongs to a PHICH group;
Right for each PHICH group, the PHICH group that is numbered even number that wherein comprises is sent at the first two subcarrier of described PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that described each PHICH group centering is comprised sends at latter two subcarrier of described each target resource group, wherein, only to be mapped to PHICH group right for described each target resource group; Perhaps
The PHICH group that is numbered odd number that described each PHICH group centering is comprised sends at the first two subcarrier of described PHICH group to described each target resource group of mapping, and the PHICH group that is numbered even number that described each PHICH group centering is comprised sends at described PHICH group latter two subcarrier to described each target resource group of mapping, wherein, only to be mapped to PHICH group right for described each target resource group.
2. method according to claim 1 is characterized in that, the quantity of described whole PHICH groups being divided successively in twos the PHICH group of last the PHICH group centering of PHICH group centering that obtains is one or two.
3. method according to claim 1 is characterized in that, described each PHICH group is 3 to the quantity of the target resource group of mapping.
4. information transmitting apparatus, being used at the transmitting physical combining retransmission indicating channel is that the Cyclic Prefix of PHICH is to send the PHICH group in the situation of extended cyclic prefix, it is characterized in that, described device comprises that group is to dividing module and sending module, wherein: described group to dividing module for whole PHICH groups are arranged numbering, and it is right according to described numbering described whole PHICH groups to be divided into the PHICH group successively in twos, and wherein, it is right that each PHICH group only belongs to a PHICH group;
The PHICH group that is numbered even number that sending module is used for each PHICH group centering is comprised sends at the first two subcarrier of described PHICH group to each target resource group of mapping, and the PHICH group that is numbered odd number that described each PHICH group centering is comprised sends at described PHICH group latter two subcarrier to described each target resource group of mapping, wherein, only to be mapped to PHICH group right for described each target resource group; Perhaps
The PHICH group that is numbered odd number that sending module is used for described each PHICH group centering is comprised sends at the first two subcarrier of described PHICH group to described each target resource group of mapping, and the PHICH group that is numbered even number that described each PHICH group centering is comprised sends at described PHICH group latter two subcarrier to described each target resource group of mapping, wherein, only to be mapped to PHICH group right for described each target resource group.
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| CN 200810006248 CN101505209B (en) | 2008-02-04 | 2008-02-04 | Information sending method and apparatus |
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| CN 200810006248 CN101505209B (en) | 2008-02-04 | 2008-02-04 | Information sending method and apparatus |
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| CN101505209B true CN101505209B (en) | 2013-01-16 |
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| CN105656607B (en) * | 2014-11-12 | 2019-06-28 | 上海朗帛通信技术有限公司 | A kind of communication means and device of LAA system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885849A (en) * | 2005-06-23 | 2006-12-27 | 三星电子株式会社 | Apparatus and method for configuring frame in a broadband wireless communication system |
| CN1902840A (en) * | 2003-11-19 | 2007-01-24 | 韩国电子通信研究院 | Method for partitioning resource space, assigning physical channel, and allocating power in OFDMA-based cellular system |
| EP1850524A1 (en) * | 2006-04-28 | 2007-10-31 | Alcatel Lucent | A method of allocating sub-carriers, base station, and end terminal for use in OFDM transmission |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1902840A (en) * | 2003-11-19 | 2007-01-24 | 韩国电子通信研究院 | Method for partitioning resource space, assigning physical channel, and allocating power in OFDMA-based cellular system |
| CN1885849A (en) * | 2005-06-23 | 2006-12-27 | 三星电子株式会社 | Apparatus and method for configuring frame in a broadband wireless communication system |
| EP1850524A1 (en) * | 2006-04-28 | 2007-10-31 | Alcatel Lucent | A method of allocating sub-carriers, base station, and end terminal for use in OFDM transmission |
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