CN101309133B - Apparatus and method for transmitting control message in a wireless communication system using relaying - Google Patents
Apparatus and method for transmitting control message in a wireless communication system using relaying Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2612—Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0097—Relays
Abstract
An apparatus and method for transmitting an ACK/NACK message from an RS in a wireless communication system using relaying is disclosed, in which the RS checks scheduling information for data transmission from a lower node, receives data from the lower node according to the scheduling information, checks errors in the data, generates error report information indicating whether the data has errors, and transmits the error report information to an upper node.
Description
The distributing serial numbers that the application requires on February 27th, 2007 to submit to Korea S Department of Intellectual Property according to 35U.S.C. § 119 (a) is that be the priority of the korean patent application of 2007-21678 to the assigned serial number of Korea S Department of Intellectual Property submission korean patent application and on the March 5th, 2007 of 2007-19914, and the content of each application in the lump at this as a reference.
Technical field
Present invention relates in general to a kind of apparatus and method that are used for carrying out automatic repeat requests (ARQ) at wireless communication system.Particularly, the present invention relates to a kind of wireless communication system that is used in use continuing sends from the affirmative acknowledgement (ACK) of relay station (RS) or the apparatus and method of negative response (NACK) message on up link connects.
Background technology
In wireless communication system, according to the channel status of the Radio Resource that carries data, data can go wrong.Wireless communication system can use ARQ and forward error correction (FEC) that mistake is corrected or controlled.ARQ is the scheme that a kind of recipient asks transmit leg that error data is transmitted again; And FEC is the scheme that a kind of recipient corrects the mistake in the obliterated data.
When wireless communication system adopted ARQ, the recipient checked the mistake in the grouping that is received through the grouping that is received is decoded.If this grouping is free from mistakes, the receive direction transmit leg sends ACK message.If there is mistake in this grouping, the receive direction transmit leg sends NACK message.
When receiving ACK message, the transmit leg transmission of new packets.On the other hand, when receiving NACK message, transmit leg retransmits and should divide into groups.
Carry out the ARQ scheme according to the process of describing among Fig. 1.
Fig. 1 shows the conventional retransmission processes in the wireless communication system.
With reference to figure 1, in step 111, base station (BS) 100 is sent to mobile radio station (MS) 102 with schedule information, is used for the use of uplink data transmission.
In step 113, MS 102 according to schedule information with uplink data transmission to BS100.
In step 115, the mistake in the uplink data that BS 100 inspections receive.If there is mistake in this uplink data, in step 117, BS 100 sends NACK message to MS 102, the re-transmission of request uplink data.
Then, in step 119, the schedule information that BS 100 will be used for data re-transmission is sent to MS 102.
When receiving this schedule information, MS 102 is retransmitted to BS 100 according to this schedule information with uplink data in step 121.
In step 123, the mistake in the data that BS 100 inspections receive.If this uplink data is free from mistakes, in step 125, BS 100 is sent to MS 102 with ACK information.
In recent years, in order to the MS that is positioned at cell boarder or shadow region more excellent wireless channel to be provided, wireless communication system has used the trunking plan based on RS.In other words, use the wireless communication system of relaying the more excellent wireless channel between BS and the MS to be provided through the data between BS and the MS being carried out relaying via RS.
Therefore, need a kind of wireless communication system that is used in use continuing to use RS to carry out the method for ARQ.
Summary of the invention
One aspect of the present invention is to be devoted to solve the problem and/or the shortcoming of foregoing description at least, and following at least advantage is provided.Thereby one aspect of the present invention has provided the apparatus and method that are used to carry out ARQ in a kind of wireless communication system that in use continues.
In addition, one aspect of the present invention provides the apparatus and method that are used for whether existing to the uplink relay data of BS report RS mistake in a kind of wireless communication system that in use continues.
According to an aspect of the present invention; The repeating method of RS in a kind of wireless communication system that uses relaying is provided; Wherein the RS inspection receives the data from downstream site from the schedule information that is used for transfer of data of downstream site according to this schedule information, the mistake in the inspection data; Produce the Report of Discrepancy information whether designation data exists mistake, and this Report of Discrepancy information is sent to superior node.
According to a further aspect in the invention; The repeating method of BS in a kind of wireless communication system that uses relaying is provided; Wherein BS is sent to RS with schedule information, indicates the Report of Discrepancy information that whether has mistake from the data of downstream site reception so that RS sends, and determines whether to receive Report of Discrepancy information from RS according to schedule information; And when the Report of Discrepancy information that receives from RS, confirm whether there is mistake from the data of Report of Discrepancy information.
According to a further aspect in the invention; The retransmission arrangement of RS in a kind of wireless communication system that uses relaying is provided; Wherein the error checking device is checked the mistake from the data that downstream site receives, and the data of data queue's storage zero defect retransmit the controller control data and retransmit; When the repeat requests that receives from superior node; Information generator produces Report of Discrepancy information, and whether indication exists mistake from the data of downstream site, and transmitter sends this Report of Discrepancy information to higher level's node.
Description of drawings
According to the following detailed description that combines accompanying drawing, above and other purpose, characteristics and the advantage of certain typical execution mode of the present invention will be more obvious, in the accompanying drawing:
Fig. 1 shows the conventional retransmission processes in the wireless communication system;
Fig. 2 shows the structure according to the wireless communication system of the use relaying of the embodiment of the invention;
Fig. 3 shows the process that retransmits uplink signal in the wireless communication system that in use continues according to the embodiment of the invention;
Fig. 4 is the operational flowchart that is used for the BS of uplink retransmission in the wireless communication system that in use continues according to the embodiment of the invention;
Fig. 5 is the operational flowchart that is used for the RS of relay uplink signal in the wireless communication system that in use continues according to the embodiment of the invention;
Fig. 6 shows the frame structure that sends ack/nack signal in the wireless communication system that in use continues according to the embodiment of the invention;
Fig. 7 is the block diagram of the RS in the wireless communication system that in use continues according to the embodiment of the invention.
Run through above-mentioned accompanying drawing, identical referenced drawings label will be understood that to be used for indicating similar elements, characteristic and structure.
Embodiment
The content that defines in the specification of for example detailed structure and element and so on is provided, to help more fully to understand execution mode of the present invention.Therefore, those of ordinary skill in the art will recognize, can carry out variations and modifications to execution mode described herein, and not deviate from scope of the present invention and spirit.In addition, for clear and succinct, omitted description to known function and structure.
Exemplary embodiment of the present provides a kind of technology, is used for when the wireless communication system that in use continues is carried out ARQ, whether having mistake by RS to higher level's node report relay data.That is, the embodiment of the invention provides a kind of technology, and wherein whether RS exists mistake to higher level's node report from the uplink data that downstream site receives through ACK/NACK information.This superior node is BS or higher level RS, here with BS as an example.This downstream site is MS or the RS of subordinate, here with MS as an example.
Although will insert at orthogonal frequency-division in the context of (OFDMA) wireless communication system and describe the present invention, be appreciated that the present invention also is applicable to other multichannel access communication systems.
In the wireless communication system that in use continues, RS as shown in Figure 2 carries out relaying to the signal between BS and the MS.
Fig. 2 shows the configuration of wireless communication system of the use relaying of the exemplary embodiments according to the present invention.
With reference to figure 2, the MS 220 in the coverage of BS 200 receives service through direct link from BS 200.Yet if MS 220 is positioned at the edge (for example cell boarder) of coverage, the channel status between BS 200 and the MS 220 is comparatively abominable, and therefore BS 200 can not provide high speed data channels to MS 220.
Yet BS 200 can provide high speed data channels to the MS under abominable channel status (such as MS 220) through RS 210.On down link, the high-speed data that MS 220 receives from BS 200 through RS 210.Because MS 220 is in the coverage of BS 200, MS 220 can receive control signal and low speed data from BS 200 through direct link.
On up link, BS 200 receives the high-speed data from MS 220 through RS.BS 200 can receive the low speed data signal from MS 220 through direct link.
As stated, intercom mutually in the wireless communication system that BS, RS and MS can in use continue.BS and MS can pass through the RS swap data.
In addition, BS and MS can carry out exchanges data through direct link, and need not the help of RS.Then, RS can intercept the data of between BS and MS, transmitting.
As stated, BS can receive the uplink data from MS or RS.Receive for uplink data, BS can select a node, receives from this node to have the high data that receive success rate between MS and the RS.
If BS detects the mistake in the uplink data, BS can select a node according to reception success rate between MS and the RS or channel status, from the data retransmission of these node receiving uplink data.For example, for data re-transmission, wireless communication system is operated with the process of describing among Fig. 3.Below describe and receive from the uplink data of RS and the hypothesis of data re-transmission thereof based on BS.
Fig. 3 shows and carries out the process that uplink signal retransmits in the wireless communication system that in use continues according to the embodiment of the invention.
With reference to figure 3, BS 300 sends the schedule information about resource, wherein MS 304 transfer uplink data to RS 302 and/or in step 313 to MS 304 in step 311.For example, the two sends schedule informations to BS 300 to RS 302 and MS 304, or sends schedule informations through RS 302 to MS 304.
As an alternative embodiment of the invention, it is contemplated that BS 300 only is sent to MS 304 with schedule information.In this case, RS 302 intercepts the schedule information that is directed to MS 304, and inspection is used for the uplink scheduling information of MS 304.This schedule information comprises resource allocation information; This resource allocation information has been indicated the resource of wherein wanting transfer uplink data, and this schedule information also comprises modulation and encoding scheme (MCS), sends the identifier (ID) of the MS of uplink data and the through-put power of uplink data according to this schedule information.
RS 302 and MS 304 detect the time of coming scheduled transmission data and resource allocation information according to schedule information MS 304.
In step 315 or 317, MS 304 is according to the schedule information transfer uplink data.For example, in step 315, MS 304 according to schedule information with uplink data transmission to RS 302.If MS 304 does not recognize RS 302, in step 317, MS 304 with uplink data transmission to BS.In this case, RS 302 intercepts the data that directly are directed to BS 300 according to this schedule information.
In step 319, for example, RS 302 uses the Cyclic Redundancy Check of data, the mistake of inspection from the data that MS 304 receives.
In order to make RS 302 whether have mistake by the reporting uplink link data, in step 321, BS 300 is sent to RS 302 with schedule information.Because BS 300 can confirm the time that MS 304 uses the uplink scheduling information of MS 304 to transmit data, so BS 300 considers the data transmission period of MS 304, will be used for the schedule information that ACK/NACK information sends and be sent to RS 302.If the preset ACK/NACK channel of ACK/NACK information that carried between BS 300 and RS 302, BS 300 need not be provided for the schedule information that ACK/NACK sends to RS 302.
If there is mistake in uplink data, in step 323, RS 302 sends nack message to BS 300.
When receiving nack message, in step 325, BS 300 sends NACK message to MS 304, the re-transmission of request uplink data.
In step 327 or 329, the schedule information that BS 300 will be used for the re-transmission of error data is sent to RS 302 and MS 304.For example, BS 300 is sent to RS 302 and MS 304 with schedule information, or is sent to MS 304 through RS 302.
As an alternative embodiment of the invention, can further imagine, BS 300 only is sent to MS 304 with schedule information.In this case, RS 302 intercepts the schedule information that is directed to MS 304.
RS 302 and MS 304 detects the time that MS 304 will come data retransmission and the resource scheduling information relevant with data re-transmission according to schedule information.
In step 331 or 333, MS 304 retransmits data according to schedule information.For example, in step 331 MS 304 according to schedule information with data re-transmission to RS 302.If MS 304 does not recognize RS 302, in step 333, MS 304 with data re-transmission to BS.In this case, RS 302 intercepts the data retransmission that is directed to MS 300.
In step 335, for example RS 302 uses the CRC of data, the mistake of inspection the data retransmission that receives from MS 304.
In order to make RS 302 can report whether data retransmission exists mistake, in step 337, BS 300 is sent to RS 302 with schedule information.Because BS 300 can confirm the time that MS 304 transmits data according to the uplink scheduling information of MS 304, so MS 300 considers the data transmission period of MS 304, and the schedule information that will be used for ACK/NACK information is sent to RS 302.If between BS 300 and RS 302, preset the ACK/NACK channel that carries ACK/NACK information, BS 300 need not be provided for the schedule information that ACK/NACK sends to RS 302.
If uplink data is free from mistakes, in step 339, RS 302 sends ACK information to BS 300.
When receiving ACK information, in step 341, BS 300 sends schedule information to RS 302, and RS 302 utilizes this schedule information transfer uplink data.When the ACK information that receives from RS 302, BS 300 can be sent to MS 304 with ACK information.
In step 343, RS 302 will be sent to BS 300 from the data retransmission that MS 304 receives according to schedule information.
In step 345, for example BS 300 uses the CRC of data, the mistake of inspection from the data that RS 302 receives.
If data are free from mistakes, in step 347 or 349, BS 300 sends ACK information to RS 302 and MS 304.For example, BS 300 is sent to RS 302 and MS 304 with ACK information, or is sent to MS 304 through RS 302.
In another embodiment of the present invention, BS 300 only is sent to MS304 with ACK information.In this case, RS 302 intercepts the ACK information that is directed to MS 304 and confirms that the data that are sent to BS 300 are free from mistakes.If RS 302 does not receive nack message or the schedule information relevant with data re-transmission from BS 300 in the given time, RS 302 confirms that the data that are sent to BS 300 are free from mistakes.
As stated, pass through under the situation of RS reception from the uplink data of MS at BS, whether RS exists mistake through ACK/NACK information to the BS report data.For example, if there is mistake in the data that receive from MS, RS sends nack message to BS.If data are free from mistakes, RS sends ACK information to BS.
When receiving ACK information from RS, BS will be sent to RS with the corresponding schedule information that is used for data of ACK information, and receive data from RS.
On the other hand, when receiving nack message, BS will be sent to MS, the re-transmission of request msg with the corresponding schedule information that is used for data of nack message.
Whether the data that receive from MS for report exist mistake, and RS is sent to BS according to the schedule information that receives from BS with ACK/NACK information.This ACK/NACK information can be used for physical channel that whether report data exist mistake, in the information element of control messages and medium access control (MAC) sub-header that can send with data or header, be sent to BS by definition.If RS uses physical channel, BS should be provided for the schedule information of physical channel to RS.Yet when between BS and RS, presetting physical channel, BS need not to be provided for to RS the schedule information of physical channel.If RS uses control messages, mac header or MAC sub-header, RS sends ACK/NACK information according to the schedule information that receives from BS to BS.
The sequence number of the data block that the message of carrying ACK/NACK information comprises the ID of the RS that sends ACK/NACK information alternatively, receive from MS to the ID of the MS of RS transmission data, sign and the indication bit that is used for the expression ACK/NACK information of this data block.
Wireless communication system has two main retransmission schemes, at the MAC of MAC layer operation retransmission scheme and at physical layer (PHY) retransmission scheme of physical layer operations.The PHY retransmission scheme also is called as hybrid ARQ (HARQ).
In the MAC retransmission scheme, RS can be sent to BS with ACK/NACK information in control messages, MAC sub-header or mac header.Each control messages, MAC sub-header or mac header comprise the connection ID (CID) that is assigned to the RS that sends ACK/NACK information, be assigned to CID to the MS of RS transmission data, as piece sequence number (BSN), the ARQ type of unique sequential value that the data block that receives from MS is identified and bitmap with indication bit of the ACK/NACK information that BSN according to data block representes to be used for data block.
In the PHY retransmission scheme, RS can perhaps be sent to BS with ACK/NACK information being used for the physical channel whether report data exists mistake by definition in control messages, MAC sub-header or mac header.Each control messages; MAC sub-header or mac header comprise the CID that is assigned to the RS that sends ACK/NACK information; Be assigned to CID to the MS of RS transmission data; HARQ channel id (ACID) as the one number of the HARQ data channel that unique sequential value of the data block that receives from MS is indicated; The Sub-Packet ID (SPID) of the one number of the sub-block among the indication ACID; Whether designation data is the ARQ identifier nucleotide sequence number (AI_SN) of data retransmission; ARQ type and have the bitmap of indication bit that expression is used for the ACK/NACK information of data block.
If RS sends ACK/NACK information on physical channel; Transmission for uplink data; RS arranges ACK/NACK information to the data block that receives from MS, and this bitmap is sent to RS according to by the rule of BS formulation or the schedule information that is sent to MS according to BS bitmap.
If adopted HARQ, BS should Resources allocation, and RS sends the ACK/NACK information of the uplink data that receives from MS in said resource.For example, in being included in by the information element among the up link MAP of the 802.16e of IEEE (IEEE) definition, BS uses the configuration information element identical with HARQ ACK region allocation information element to distribute the ACK/NACK information area as RS.Promptly; Through Extended-2UIUC (uplink interval the is used sign indicating number) field of HARQ ACK region allocation information element is arranged to different values, BS has indicated HARQ ACK region allocation information element to comprise the resource allocation information about the ACK/NACK information area of RS.
BS also comes to dispatch the time that RS sends ACK/NACK information to the RS notice through in by upstream channel descriptor (UCD) message of IEEE 802.16e definition, adding fresh information.
For example, BS sends schedule information to RS, and request RS sends the ACK/NACK information that is used for data k frame after receiving data.If RS is at j
ThReceive uplink data from MS in the physical frame, RS is at (j+k)
ThUtilize in the frame in the resource of HARQ ACK region allocation information element distribution, send the ACK/NACK information that is used to receive data to BS
To retransmit about the uplink data in the wireless communication system that in use continues now, the operation of BS will be described.
Fig. 4 is the operational flowchart that is used for the BS of uplink retransmission in the wireless communication system that in use continues according to one embodiment of the invention.
With reference to figure 4, in step 401, BS sends the schedule information about resource to RS and MS, and MS is transfer uplink data in this resource.For example, BS sends schedule information to RS and MS, or sends schedule information through RS to MS.As an alternative embodiment of the invention, can further imagine, BS only sends schedule information to MS.In this case, RS intercepts the schedule information that is directed to MS and checks the uplink scheduling information that is used for this MS.
In step 403, BS 300 considers that the data transmission period of MS sends schedule information, sends ACK/NACK message through this schedule information RS.If between BS and RS, preset the channel that carries ACK/NACK information, BS need not to be provided for the schedule information that ACK/NACK sends to RS.
In step 405, BS is used for physical channel, control messages, MAC sub-header or mac header that whether report data exist mistake through inspection by definition and monitors whether receive ACK message from RS.
When receiving NACK message, in step 415, BS is sent to MS with NACK message, the re-transmission of request uplink data.
Then, BS turns back to step 401, and wherein the BS schedule information that will be used for the re-transmission of error data is sent to RS and MS.
When receiving ACK message, in step 407, the schedule information that BS will be used for uplink data transmission is sent to RS.Simultaneously, BS can send ACK message to MS.
BS receives data in step 409 from RS according to schedule information, and for example uses the mistake in the crc check data in step 411.
If there is mistake in data, BS sends NACK message to RS in step 417, and the re-transmission of request msg also is sent to RS in the schedule information that step 407 will be used for data re-transmission.
On the contrary, if data are free from mistakes, BS sends ACK message in step 413 to RS or MS.For example, BS sends ACK message to RS and MS or to one of RS, MS.
BS process ends then.
As stated, when detecting mistake in the data that BS is receiving, the data re-transmission process of BS execution and RS or MS.When time limit that is provided for data re-transmission (lifetime) when expiring, BS finishes retransmission processes.
Although in the embodiment of the invention described above; BS will send relevant schedule information and be sent to RS with the relevant schedule information of ul transmissions with ACK/NACK; Can further imagine; In another embodiment of the present invention, when RS sends ACK/NACK information in control messages, MAC sub-header or mac header, BS will send relevant schedule information with ACK/NACK and be included in the schedule information of being correlated with uplink data transmission.
To describe with reference to the uplink data retransmission operation of the RS in 5 pairs of wireless communication systems that in use continue of figure.
Fig. 5 is the operational flowchart that is used for the BS of uplink relay in the wireless communication system that in use continues according to the embodiment of the invention.
With reference to figure 5, RS is at the uplink scheduling information of step 501 inspection MS.RS is from BS receiving uplink schedule information and intercept the uplink scheduling information that is directed to MS from BS.
In step 503, RS monitors the Data Receiving from MS according to schedule information.If do not receive data in the given time, RS is back to step 501.
When MS receives data, the ACK/NACK that RS checks in step 505 and receives from BS sends relevant schedule information.
In step 507, for example RS uses the mistake of crc check in the data that receive.Here, step 507 can be mentioned before the step 505.
If have mistake in the data that receive, in step 517, the RS basis is sent relevant schedule information with ACK/NACK NACK message is sent to BS.Whether be used for report data in the quilt definition exists the physical channel of mistake or sends this NACK message at control messages, MAC sub-header or mac header.
Then, RS is back to the uplink scheduling information that step 501 is checked MS.
On the other hand, if the data that receive from MS are free from mistakes, the RS basis is sent relevant schedule information with ACK/NACK ACK message is sent to BS in step 509.Whether report data exists the physical channel of mistake or on control messages, MAC sub-header or mac header, send this ACK message being used for by definition.
RS checks the schedule information relevant with uplink data transmission in step 511 then, and the transfer of data that in step 513, will receive from MS according to this schedule information is to BS.
In step 515, whether the RS monitoring receives the repeat requests signal from BS.This repeat requests signal is to send or the relevant schedule information of data re-transmission with NACK.
When receiving the repeat requests signal, RS turns back to step 511 and the inspection schedule information relevant with data re-transmission.For example, if RS receives NACK message from BS, the schedule information that the RS inspection is relevant with the data re-transmission that receives from BS thinks that there is mistake in the data that are transferred to BS.
Simultaneously, if do not received this repeat requests signal, RS finishes this flow process.For example, if RS receives ACK message from BS, RS finishes this flow process.Directly receive this ACK message indirectly from BS or through intercepting the message of sending from BS.
In another embodiment of the present invention, if RS does not receive the repeat requests signal from BS in the given time, RS finishes this flow process, thinks that the data that are transferred to BS are free from mistakes.
As stated, based on the request of BS, RS carries out the data re-transmission flow process.When the time limit that is provided for data re-transmission expired, RS finished to retransmit flow process.
For supporting this relay services, frame is configured to the ACK/NACK sending zone is included in the wireless communication system.
Fig. 6 shows the frame structure that is used to send ack/nack signal in the wireless communication system that in use continues according to the embodiment of the invention.
With reference to figure 6, frame 600 comprises down link (DL) subframe 610 and up link (UL) subframe 620.
BS with the DL transfer of data in DL subframe 610 parts to RS and MS.RS with the DL transfer of data in DL subframe 610 another part to MS.
BS will be used for transmitting in the first area 611 of DL subframe 610 from the ACK/NACK information of the UL data of MS reception.In addition, the ACK/NACK information of the BS UL data that will be used for receiving from RS is transmitted at the second area 613 of DL subframe 610.
MS will be in the UL transfer of data in UL subframe 620 parts to RS and BS.RS will be in the UL transfer of data in UL subframe 620 another part to BS.
MS will be used for transmitting in the 3rd zone 621 of UL subframe 620 from the ACK/NACK information of the DL data of BS reception.In addition, the ACK/NACK information of the MS DL data that will be used for receiving from RS is transmitted in the 3rd zone 625 of UL subframe 620.
RS will be used for transmitting in the 5th zone 625 of UL subframe 620 from the ACK/NACK information of the DL data of BS reception.Notice that RS can send ACK/NACK information in physical channel, control messages, MAC sub-header or the mac header of the independent acquisition that is used for the ACK/NACK transmission.
Now to the line description that is configured into of the BS, RS and the MS that in wireless communication system, are used for transfer of data.Because BS has identical configuration with RS, will describe with reference to 7 couples of RS of figure, and not to the line description that is configured into of BS and MS.
Fig. 7 shows the block diagram of the RS in the wireless communication system that in use continues according to the embodiment of the invention.
Although following description has the hypothesis of different antennae based on transmitter 700 and receiver 720, yet they can share individual antenna.
With reference to figure 7, ARQ controller 740, ARQ state supervisor 750, ARQ timer 760 and channel estimator 770 that RS comprises transmitter 700, receiver 720, between transmitter 700 and receiver 720, shares.
The data that channel encoder 703 will receive from data producer 701 are encoded with predetermined modulation levels (for example MCS grade).CRC generator 705 produces error detecting code and it is added in the channel-encoded data.
Convert baseband signal under the RF signal that RF processor 721 will receive from BS or MS through antenna.
In data processor 731, SDU processor 735 will be isolated data and control messages from the physical layer signal that channel decoder 729 receives.Then, SDU processor 735 in second data queue 737, and offers control messages the message handling device 733 that is used to decode with storage.First and second formations 713 and 733 can merge in the independent data queue.When receiving NACK message from BS, message handling device 733 notice ARQ controllers 740 receive NACK message.
The ARQ state of ARQ state supervisor 750 management data retransmissions.The time limit that 760 management of ARQ timer retransmit.
During retransmitting, ARQ controller 740 is finishing to retransmit flow process when ARQ timer 760 receives that the time limit expires message.
Although this re-transmission flow process is to carry out describing in the content of relay services through an independent RS in wireless communication system, this flow process can also be used for the multi hop relay wireless communication system.
It is obvious that from foregoing description, and advantageously, the present invention has practiced thrift Radio Resource; This is because in the ARQ operation; Whether RS exists mistake to the uplink signal that the BS report receives from MS, and in the wireless communication system that therefore in use continues, BS only receives the signal of zero defect from RS.
Although illustrate and described the present invention with reference to certain typical embodiment of the present invention; One of ordinary skill in the art will appreciate that; Can make various changes in form and details; And not deviating from the spirit and scope of the present invention, said spirit and scope are defined by accompanying claims and equivalent thereof.
Claims (33)
1. the repeating method of the relay station RS in the wireless communication system that uses relaying, said method comprises:
Inspection is used for carrying out from downstream site the schedule information of transfer of data;
Receive data according to said schedule information from downstream site;
Mistake in the inspection data;
Generation has indicated data whether to have the Report of Discrepancy information of mistake; And
Said Report of Discrepancy information is sent to superior node,
Wherein, if the Report of Discrepancy information of being sent is the affirmative acknowledgement ACK that does not have mistake in the expression data, then
The schedule information that inspection receives from superior node;
The transfer of data that will receive from downstream site according to said schedule information is to higher level's node; And
When the repeat requests signal that receives from superior node, with data re-transmission to higher level's node.
2. according to the repeating method of claim 1, wherein, receive said schedule information from superior node.
3. according to the repeating method of claim 1, wherein, be sent to schedule information mobile radio station MS, that be used for MS transmission data from base station BS and obtain said schedule information through intercepting.
4. according to the repeating method of claim 1, wherein, dispose said Report of Discrepancy information according to one of following form: quilt is defined is used to report physical channel, control messages, media access control MAC sub-header and the mac header that whether has mistake.
5. according to the repeating method of claim 1; Wherein, the said Report of Discrepancy information indication bit that comprises the identifier ID of at least one in the following content: RS, the sequence number that identifies with the ID of transfer of data to the downstream site of RS, to the data block that receives from downstream site and whether have mistake according to the sequence number designation data piece of said data block.
6. according to the repeating method of claim 5, wherein, if there is mistake in data, indication bit has represented to indicate the negative response NACK that has mistake, if there is not mistake in data, indication bit has represented to indicate the affirmative acknowledgement ACK that does not have mistake.
7. repeating method according to claim 1; Wherein, Retransmit the indication bit that said Report of Discrepancy information comprises the connection ID CID of at least one in the following content: RS, the piece sequence number BSN that identifies with the CID of transfer of data to the downstream site of RS, to the data block that receives from downstream site, retransmission type and whether has mistake according to the BSN designation data piece of data block if carry out media access control MAC.
8. repeating method according to claim 1; Wherein, If whether execution physical layer retransmission, said Report of Discrepancy information comprise the connection ID CID of at least one in the following content: RS, be the indication bit whether ARQ identifier nucleotide sequence AI_SN, ARQ type and the designation data piece of data retransmission exists mistake to the CID of the downstream site of RS transmission data, as the mixed automatic repeat request channel id ACID of the sequence number that the data block that receives from downstream site is identified, the Sub-Packet ID SPID, designation data of sub-block the sign ACID.
9. repeating method according to claim 1, wherein, said transmission is included in sends Report of Discrepancy information in the zone that is allocated for message transfer, and said message has indicated according to frame structure whether data exist mistake in the uplink sub-frames.
10. repeating method according to claim 1, wherein, said transmission comprises:
The control messages of detection from the schedule information that superior node receives is so that send Report of Discrepancy information; And
According to said control messages said Report of Discrepancy information is sent to superior node.
11. repeating method according to claim 10, wherein, the resource allocation information that said control messages comprises the time of sending Report of Discrepancy information and is used to send said Report of Discrepancy information one of at least.
12. repeating method according to claim 1, wherein, said re-transmission comprises:
When receiving negative response NACK from superior node, the schedule information that inspection retransmitted data from superior node being used for of receiving; And
According to said schedule information with data re-transmission to higher level's node.
13. repeating method according to claim 1, wherein said re-transmission comprises: if receive the schedule information that is used for data re-transmission from superior node, according to said schedule information with data re-transmission to higher level's node.
14. repeating method according to claim 1 also comprises: if retransmit said data, then
The time limit that inspection retransmits; And
Current when being limited to the phase end data retransmit.
15. the repeating method of base station BS in the wireless communication system that uses relaying, said method comprises:
Send the schedule information that is used for RS to relay station RS, so that send the Report of Discrepancy information that whether has mistake from the data of downstream site reception of having indicated;
Determine whether to receive said Report of Discrepancy information according to said schedule information from RS; And
When receiving said Report of Discrepancy information from RS, whether specified data exists mistake from said Report of Discrepancy information,
Wherein, if affirmative acknowledgement ACK representes from there not being mistake in the data of RS, then
RS schedule information is sent to RS, so that can transmit the data that receive from downstream site;
When receiving data, the data that receive from RS, check mistake according to said schedule information; And
If in data, detect mistake, then ask data re-transmission to RS.
16. repeating method according to claim 15; Also comprise: the schedule information that will be used for the transfer of data of downstream site be sent to downstream site and RS one of at least; Wherein said transmission comprises the data transmission period of considering downstream site, and the schedule information that will be used to send Report of Discrepancy information is sent to RS.
17. repeating method according to claim 15; Wherein, dispose said Report of Discrepancy information according to one of following form: defined the physical channel, control messages, media access control MAC sub-header and the mac header that are used for report data and whether have mistake.
18. repeating method according to claim 15; Wherein, said Report of Discrepancy information comprise in the following content one of at least: the identifier ID of RS, the sequence number that identifies with the ID of transfer of data to the downstream site of RS, to the data block that receives from downstream site, whether have the indication bit of mistake according to the sequence number designation data piece of data block.
19. repeating method according to claim 15; Wherein, Retransmit if carry out media access control MAC, then said Report of Discrepancy information comprise in the following content one of at least: the connection ID CID of RS, the piece sequence number BSN that identifies with the CID of transfer of data to the downstream site of RS, to the data block that receives from downstream site, retransmission type and the indication bit that whether has mistake according to the BSN designation data piece of data block.
20. repeating method according to claim 15; If wherein carry out physical layer retransmission, said Report of Discrepancy information comprise following content one of at least: the connection ID CID of RS, whether be the indication bit whether ARQ identifier nucleotide sequence AI_SN, retransmission type and the designation data piece of data retransmission exists mistake to the CID of the downstream site of RS transmission data, as the mixed automatic repeat request channel id ACID of the sequence number that the data block that receives from downstream site is identified, the Sub-Packet ID SPID, designation data of sub-block the sign ACID.
21. repeating method according to claim 15, wherein, said repeat requests comprises:
Exist the negative ACK NACK of mistake to send to RS expression; And
The schedule information that will be used for data re-transmission is sent to RS.
22. repeating method according to claim 15, wherein, said repeat requests comprises the schedule information that is used for data re-transmission is sent to RS.
23. repeating method according to claim 15 also comprises: if said data are retransmitted, then
The time limit that inspection retransmits; And
Current when being limited to the phase end data retransmit.
24. repeating method according to claim 15 also comprises: if the data that receive from RS are free from mistakes, then with designation data do not exist the information of mistake send to RS and downstream site one of at least.
25. repeating method according to claim 15, wherein, the said schedule information that is used to send Report of Discrepancy information comprises at least one of time of sending Report of Discrepancy information and the resource allocation information that is used to send said Report of Discrepancy information.
26. repeating method according to claim 15 also comprises:, do not exist the ACK of mistake to be sent to mobile radio station MS expression when receiving expression from RS when from the data that downstream site receives, not having the ACK of mistake.
27. the retransmission arrangement of the relay station RS in the wireless communication system that uses relaying, said device comprises:
The error checking device is used for checking the mistake from the data of downstream site reception;
Data queue is used to store the data that do not have mistake;
Retransmit controller, be used for when when superior node receives repeat requests, controlling data re-transmission;
Information generator is used to produce whether indication exists mistake from the data of downstream site reception Report of Discrepancy information; And
Transmitter is used for sending said Report of Discrepancy information to superior node,
Wherein, If the Report of Discrepancy information of being sent is the affirmative acknowledgement ACK that does not have mistake in the expression data; Then the transmitter transfer of data that will receive from downstream site according to the schedule information that receives from superior node is to higher level's node; And when the repeat requests signal that receives from superior node, with data re-transmission to higher level's node.
28. retransmission arrangement according to claim 27; Wherein, said information generator produces the Report of Discrepancy information according to one of following form: defined the physical channel, control messages, media access control MAC sub-header and the mac header that are used for the report data existence or do not have mistake.
29. retransmission arrangement according to claim 27; Wherein, Said information generator produces Report of Discrepancy information so that the report of said error message comprise in the following content one of at least: the identifier ID of RS, the sequence number that identifies with the ID of transfer of data to the downstream site of RS, to the data block that receives from downstream site and the indication bit that whether has mistake according to the sequence number designation data piece of data block.
30. retransmission arrangement according to claim 27; Wherein, If carrying out media access control MAC retransmits; Said information generator produces Report of Discrepancy information so that the report of said error message comprise following content one of at least: the connection ID CID of RS, the piece sequence number BSN that identifies with the CID of transfer of data to the downstream site of RS, to the data block that receives from downstream site, retransmission type and the indication bit that whether has mistake according to the BSN designation data piece of data block.
31. retransmission arrangement according to claim 27; Wherein, If execution physical layer retransmission; Said information generator produces Report of Discrepancy information so that said error message report in the following content one of at least: the connection ID CID of RS, whether be the indication bit whether ARQ identifier nucleotide sequence AI_SN, retransmission type and the designation data piece of data retransmission exists mistake to the CID of the downstream site of RS transmission data, as the mixed automatic repeat request channel id ACID of the sequence number that the data block that receives from downstream site is identified, the Sub-Packet ID SPID, designation data of sub-block the sign ACID.
32. retransmission arrangement according to claim 27; Also comprise data producer; Be used under the control that retransmits controller, use the data of storing in the data queue to produce the data that will be transferred to superior node, wherein the transmitter transfer of data that will produce from data producer is to superior node.
33. retransmission arrangement according to claim 27, if comprise that also being used for data is retransmitted the retransmission timer in time limit by retransmission management, wherein current said re-transmission control unit end data re-transmission when being limited to the phase.
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| Application Number | Priority Date | Filing Date | Title |
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| KR20070019914 | 2007-02-27 | ||
| KR2007-0019914 | 2007-02-27 | ||
| KR1020070021678A KR101292597B1 (en) | 2007-02-27 | 2007-03-05 | Apparatus and method for control message transmission in wireless communication system using relay |
| KR2007-0021678 | 2007-03-05 |
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| CN101309133A CN101309133A (en) | 2008-11-19 |
| CN101309133B true CN101309133B (en) | 2012-03-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101790193B (en) * | 2009-01-22 | 2014-08-13 | 中兴通讯股份有限公司 | Control method, control system, transmitting end device and receiving end device for hybrid automatic repeat request |
| CN101790194A (en) * | 2009-01-22 | 2010-07-28 | 中兴通讯股份有限公司 | Mixed automatic retransmission request method, device and system for relay uplink |
| KR101667420B1 (en) * | 2009-02-09 | 2016-10-19 | 엘지전자 주식회사 | Method and appratus for transmitting uplink control information signal |
| CN102282908A (en) * | 2009-04-10 | 2011-12-14 | 华为技术有限公司 | Transmission method of relay link, base station and relay system |
| KR101265651B1 (en) * | 2009-05-12 | 2013-05-22 | 엘지전자 주식회사 | Method for transceiving data with both a mobile station and a relay station in a broadband wireless communication system |
| CN101895379B (en) * | 2009-05-21 | 2014-09-10 | 中兴通讯股份有限公司 | Method and system for realizing uplink retransmission of access link |
| US8665775B2 (en) | 2009-05-24 | 2014-03-04 | Lg Electronics Inc. | Method and apparatus in which a relay station makes a hybrid automatic repeat request in a multi-carrier system |
| WO2010137839A2 (en) * | 2009-05-24 | 2010-12-02 | 엘지전자 주식회사 | Method and apparatus in which a relay station makes a hybrid automatic repeat request in a multi-carrier system |
| CN101925188B (en) * | 2009-06-16 | 2016-02-17 | 中兴通讯股份有限公司 | A kind of downlink feedback information for trunk link transmission method and device |
| WO2011020234A1 (en) * | 2009-08-17 | 2011-02-24 | 上海贝尔股份有限公司 | Method and apparatus for controlling data retransmission in wireless relay network |
| CN103368706A (en) * | 2012-03-26 | 2013-10-23 | 中兴通讯股份有限公司 | Transmission method, device and system for hybrid automatic repeat request |
| CN105409152B (en) * | 2014-05-21 | 2019-04-26 | 华为技术有限公司 | Transmission method, equipment and the system of upstream data |
| KR101532304B1 (en) * | 2014-12-29 | 2015-07-01 | 주식회사 모비솔루션 | System and method for monitoring transfer and receipt of message |
| WO2019044535A1 (en) | 2017-08-31 | 2019-03-07 | ソニー株式会社 | Communication device and method |
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| CN1212098A (en) * | 1995-12-29 | 1999-03-24 | 艾利森电话股份有限公司 | Concatenated error detection coding and packet numbering for hierarchical ARQ schemes |
| CN1846371A (en) * | 2003-09-03 | 2006-10-11 | 摩托罗拉公司 | Method and apparatus for relay facilitated communications |
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| KR20080079567A (en) | 2008-09-01 |
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