CN101729122A - Method for transmitting control information by distributed relay system - Google Patents
Method for transmitting control information by distributed relay system Download PDFInfo
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- CN101729122A CN101729122A CN200810225041A CN200810225041A CN101729122A CN 101729122 A CN101729122 A CN 101729122A CN 200810225041 A CN200810225041 A CN 200810225041A CN 200810225041 A CN200810225041 A CN 200810225041A CN 101729122 A CN101729122 A CN 101729122A
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Abstract
The invention discloses a method for transmitting control information by a distributed relay system, comprising the following steps of: receiving service data from a radio link control (RLC) layer by a media access control (MAC) layer of a relay link, and requiring for carrying out Qos group classification for the received service data according to the quality of service (Qos) of the service data if the service data are determined to be unbelonging to the service data of user equipment (UE) connected with the media access control (MAC) layer; dispatching Qos groups, and generating control information which corresponds to each Qos group according to the dispatch condition of the Qos group; and multiplexing the control information and then transmitting. The invention greatly reduces the quantity of the control information transmitted on the relay link by using the user equipment (UE) as dispatch granularity in the prior art because one Qos group corresponds to one piece of the control information, thereby reducing the transmission time delay of the control information and enhancing the transmission efficiency and the resource utility ratio of the relay link.
Description
Technical field
The present invention relates to the information processing technology, the method for particularly a kind of distributed relay system transmissions control information.
Background technology
At long-term evolution plan (LTE, Long Term Evolved) in the evolution version LTE-Advanced system, in order to improve subscriber equipment (UE, User Equipment) with base station (BS, Base Station) signal transmission quality between, increase service data transmission rate, enlarge the coverage of BS and improve cell capacity, introduced nontransparent relaying technique.Promptly between UE and BS, introduce relay station (RS, Relay Station), make UE, BS and RS form nontransparent relay system.In nontransparent relay system, between BS and the RS and the transmission link between RS and the RS be called repeated link, transmission link between RS and the UE is called access link, and the UE in the RS coverage realizes being connected by RS and BS, then carries out direct communication between UE and the RS.
In existing nontransparent distributed relay system, BS and RS possess the ability of management, distribution and the scheduling of Radio Resource, finish scheduling to subordinate's website (RS) by higher level's website (BS), realize the transmission of up-downgoing business datum.
Fig. 1 is existing nontransparent relay system structural representation.Referring to Fig. 1, this system comprises: BS, a plurality of RS (RS 1, RS2 ..., RSn) and a plurality of UE, wherein, be down link with the transmission link of BS to UE, for BS and RS
n, BS is called higher level's website, with RS
nBe called subordinate's website; Similar ground is for RS
nAnd RS
N-1, RS
nBe called higher level's website, RS
N-1Be called subordinate's website.
BS and RS
nBetween and the transmission link between the RS be repeated link, a BS may comprise a plurality of RS, also may comprise a plurality of UE (not shown)s that directly link to each other with BS;
A RS may comprise the RS (subordinate's website) of a plurality of next jumping, also may comprise a plurality of UE that directly link to each other with this RS, and the transmission link between RS and the direct UE that links to each other is an access link;
UE realizes communicating by letter with BS by access link and repeated link.
Among Fig. 1, in the distributed relay system of a plurality of RS cascades, if connected n RS between UE and the BS, then need to jump link between BS and the UE and just can finish the up-downgoing business data transmission through n+1, BS and RS are by sending control information on repeated link to control the up-downgoing business data transmission of this UE, the up-downgoing business data transmission of a UE is controlled in every control information on every jumping repeated link, comprise uplink control information and down link control information.Because transmission simultaneously has the business datum of a plurality of UE on the repeated link between BS and the RS, thereby, need BS and RS by on repeated link, sending a plurality of control informations to control the up-downgoing business data transmission of corresponding a plurality of UE, for the RS on the repeated link, the control information of subordinate's website feedback and the control information that higher level's website issues will be received; And send control information respectively to subordinate's website and with the UE that communicates that self directly links to each other, the control information of feedback is reported higher level's website.
Behind the current website receiving control information, processing through physical layer, promptly physical layer process is carried out in the control information that receives, for example, finishing chnnel coding, modulation, precoding and the resource mapping of control information handles, to be carried on through the control information of physical layer process on the physical control channel then, and be sent to subordinate's website respectively or corresponding UE is dispatched with the UE that communicates that self directly links to each other.
By existing nontransparent relay system as seen, BS or RS are that unit generates control information with UE, the up-downgoing business data transmission of a UE is controlled in every control information on every jumping repeated link, BS transfers to UE with control information by RS, perhaps, RS transfers to BS with control information, because every control information need be through the processing of the corresponding RS physical layer of repeated link, the processing delay of control information is long, efficiency of transmission is lower; Further, increase along with scheduling UE number, the also corresponding increase of the control information of transmitting on the physical control channel, the also corresponding increase of the resource overhead of physical layer transmission control information, wasted valuable Radio Resource, the feasible UE limited amount that inserts BS, and cause that easily the processing delay of control information increases, make the efficiency of transmission of control information further reduce, reduced the resource utilization on the repeated link.
Summary of the invention
In view of this, a main purpose of the present invention is to provide the method for a kind of distributed relay system distributed relay system transmissions control information, reduce control information on the repeated link propagation delay time, improve the efficiency of transmission and the resource utilization of repeated link.
For achieving the above object, the invention provides the method for a kind of distributed relay system transmissions control information, this method may further comprise the steps:
The media interviews control MAC layer of repeated link transmitter side receives the business datum from Radio Link control rlc layer, for not belonging to the business datum of the user equipment (UE) that self links to each other, the business datum that receives is carried out the Qos group categories if determine business datum according to the Qos requirement of business datum;
For organizing to dispatch and generate described every class Qos according to the scheduling situation that every class Qos organizes, all kinds of Qos organize control information corresponding;
With described control information multiplexing back transmission.
The step that the media interviews control MAC layer of described repeated link transmitter side receives from the business datum of Radio Link control rlc layer further comprises before:
The MAC layer of repeated link receiver side receives the Qos group business datum of carrying cyclic redundancy check (CRC) code CRC check object information from physical layer;
Determine that according to the CRC check object information Qos group business datum that receives is correct, the Qos group business datum of described reception is carried out demultiplexing, recover the Medium Access Control (MAC) Protocol Data Unit PDU business datum of single UE;
MAC PDU business datum is reverted to RLC PDU business datum, send to rlc layer.
The described Qos group business datum of determining to receive according to the CRC check object information correctly further comprises:
If determine that the Qos group business datum that receives is correct, form the MAC layer of confirming feedback information and being sent to transmitter side to receiving correct Qos group business datum;
If the Qos that determines to receive group business datum mistake generates non-affirmation feedback information and is sent to the MAC layer of transmitter side, and waits for the re-transmission of the Qos group business datum of described mistake.
Describedly form and confirm that feedback information further comprises: carry out the affirmation feedback information of every class Qos group business datum correspondence multiplexing receiving correct Qos group business datum.
Described Qos according to business datum requires that the business datum that receives is carried out the Qos group categories and specifically comprises:
The MAC layer is according to the numbering of the logic channel that receives business datum, after determining the affiliated Qos group of traffic data type and business datum, according to the Qos requirement of business datum, the business datum that identical Qos is required is combined as class Qos group, and upgrades the buffer status report BSR information of this Qos group.
The described scheduling specifically for all kinds of Qos groups comprises:
The MAC layer is according to the precedence information of BSR information and this Qos group of Qos group, the Qos type of selection scheduling, and, be all kinds of Qos set of dispense resources according to the situation of available radio resources and physical control channel;
According to the priority of the UE that comprises in the class Qos group, determine the data volume of each UE of the scheduling that comprises in the business datum of such Qos group, and carry out the business datum of each UE multiplexing;
The mixing of determining the transmission of every class Qos group retransmits the HARQ process automatically.
Further comprise: the business datum of the group of all kinds of Qos after multiplexing is sent to physical layer carry out chnnel coding, modulation and physical channel mapping back and send.
Described scheduling situation comprises: the data volume of every class Qos group business datum, carry the physical resource and the modulating-coding speed of such Qos group business datum.
Described control information comprises: uplink control information and down link control information.
Described uplink control information comprises: dispatch request information and downlink service data feedback information.
Described dispatch request information comprises: the Qos group quantity, each Qos group id and each the Qos group scheduling requested content that comprise in the dispatch request information.
Described downlink service data feedback information comprises: channel quality indication feedback information, Qos group process number, Qos group process identification (PID) and Qos group progress feedback information.
Transmit described uplink control information by Physical Uplink Control Channel.
Described down link control information comprises: the feedback information of schedule information and uplink business data.
Described schedule information comprises: Qos organizes quantity, each Qos group id and each Qos group scheduling information content.
Described uplink business data feedback information comprises: Qos group process number, Qos group process identification (PID) and Qos group progress feedback information.
Transmit described schedule information by Physical Downlink Control Channel, transmit described upstream data feedback information by the physical mixed automatic re-transmission indicating channel.
As seen from the above technical solutions, the method of distributed relay provided by the invention system distributed relay system transmissions control information, after MAC layer by repeated link determines that the business datum that receives is for the business datum that does not belong to the UE that self links to each other, Qos according to business datum requires business datum is carried out the Qos group categories, for organizing to dispatch and generate every class Qos according to the scheduling situation that every class Qos organizes, all kinds of Qos organize control information corresponding, with control information multiplexing back transmission.Because the corresponding control information of class Qos group, greatly reduce the existing quantity of control information transmission on the repeated link when with UE being the scheduling granularity, thereby reduced the time delay of control information transmission, improved the efficiency of transmission and the resource utilization of repeated link.
Description of drawings
Fig. 1 is existing nontransparent relay system structural representation;
Fig. 2 is the schematic flow sheet of repeated link transmitter side MAC layer multiplexing service data of the present invention and control information transmission;
Fig. 3 is the schematic flow sheet of repeated link transmitter side MAC layer transmitting scheduling information of the present invention;
Fig. 4 is the schematic flow sheet of repeated link transmitter side MAC layer service data transmission of the present invention;
Fig. 5 is the schematic flow sheet of repeated link receiver side MAC layer service data transmission of the present invention;
Fig. 6 is the handling process schematic diagram of repeated link receiver side MAC layer of the present invention to feedback information;
Fig. 7 is the structural representation of dispatch request information of the present invention;
Fig. 8 is the structural representation of downlink service data feedback information of the present invention;
Fig. 9 is the structural representation of schedule information of the present invention;
Figure 10 is the structural representation of uplink business data feedback information of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
In the practical application, business datum is service quality (Qos, Quality of Service) end to end, can be divided into Qos on the access link and the Qos on the repeated link, and the present invention relates generally to the Qos on the repeated link.On repeated link, current website receives business datum and control information, after according to control information business datum being handled, again according to the resource management capacity of current website, generate control information and be sent to higher level's website or subordinate's website of current website, realize the transmission of up-downgoing business datum.Because the transmission quality of each subcarrier of transmission information is different, for example, at OFDM (OFDMA, Orthogonal Frequency Division Multiple Access) in the system, the frequency selective fading of each subcarrier is different, thereby, for the transmission quality of different sub carrier, different to the assurance meeting of the Qos of business datum; But for same subcarrier, its assurance to the Qos of business datum is identical, and promptly the requirement to time delay and indexs such as frame error rate is consistent, thereby, for having a plurality of up-downgoing business datum control information corresponding that identical Qos requires, the content of its control information all is identical.
The method of distributed relay provided by the invention system distributed relay system transmissions control information is considered the business datum control information corresponding with a plurality of UE that identical Qos requires, and the content of its control information all is identical feature.Thereby, in the present invention, media interviews control (the MAC of repeated link website, Medium Access Control) layer requires to carry out the Qos group categories with the business datum that receives according to different Qos, control respectively at every class Qos group business datum, for the business datum of same item Qos group, its corresponding control information, use identical modulating-coding format set (MCS, Modulation and Coding Scheme) that control information is modulated, encoded; For the business datum of inhomogeneity Qos group, corresponding different control informations is carried out the business datum control information corresponding of every class Qos group multiplexing, and transmits simultaneously on identical Radio Resource.
Because Qos requires different, business datum at inhomogeneity Qos group, the content that control information comprises is also different, for example, the resource information of using, MCS information, mixing retransmit phase related control informations such as (HARQ, Hybrid Automatic Repeat Request) information and precoding information automatically.
Among the present invention, the control information of transmitting on repeated link comprises: uplink control information and down link control information, wherein,
The up link control messages comprises again: subordinate's website sends to higher level's website, and for example, RS sends to the dispatch request information of BS and the feedback information of downlink service data.The feedback information of downlink service data comprises affirmation/non-affirmation (ACK/NACK) information of downlink service data and channel quality indication (CQI, Channel Quality Indicator) information etc.
Down link control information comprises again: higher level's website sends to subordinate's website, and for example, BS sends to the schedule information of RS and the feedback information of uplink business data.The feedback information of upstream data comprises the ACK/NACK information of uplink business data.
The MAC layer of BS and RS requires to distinguish according to Qos for the relevant information of dispatch request, promptly original buffer status report (BSR for business datum or UE, Buffer State Report) information, correspondence requires to carry out sorted Qos group according to Qos, RS reports BS with the BSR message transmission of the business datum of all kinds of Qos groups, is used for the scheduling of uplink business data; BS determines the scheduling of downlink service data according to the BSR information that receives.
For the HARQ process of the business data transmission correspondence of the CQI information of ACK/NACK information, down link and Qos group, carry out according to all kinds of Qos groups, promptly feed back at the business datum of each class Qos group.
In the practical application, each class Qos group can be provided with a plurality of HARQ processes, is used to retransmit or the transmission of new business data.
In short, the method for distributed relay provided by the invention system distributed relay system transmissions control information is the control that granularity is carried out business datum on the repeated link with Qos, and the business datum of same class Qos group is carried out multiplexing on repeated link; The corresponding control information of the business datum of same class Qos group, inhomogeneity Qos group control information corresponding is carried out multiplexing on repeated link.
Because having introduced on repeated link is the granularity of scheduling with Qos, therefore on repeated link, the MAC layer of BS and RS is handled except having existing scheduling, HARQ and transformat and resource control (TFRC, Transport Format and Resource Control) beyond the function, also needs to increase the multiplexing process function that business datum is required to carry out the division of Qos group, Qos group business datum and control information according to Qos.
Fig. 2 is the schematic flow sheet of repeated link transmitter side MAC layer multiplexing service data of the present invention and control information transmission, and referring to Fig. 2, this flow process comprises:
Step 201, the MAC layer receives the business datum from high-rise Radio Link control (RLC, Radio LinkControl) layer, determines that the Qos under the business datum organizes;
In this step, the MAC layer receives the business datum of rlc layer, if determining business datum is to send to the UE that self links to each other, for the business datum that is sent to this UE generates control information, and this control information and business datum be sent to UE after physical layer process, its flow process is a prior art, does not repeat them here.If determine that business datum need be sent to subordinate or higher level's website, the MAC layer is according to the numbering of the logic channel that receives business datum, determine the affiliated Qos group of traffic data type and business datum, for example, speech business data and downloading service class data are dissimilar business datums, the numbering difference of the logic channel of its reception, and both belong to inhomogeneous Qos group, the speech business data belong to the Qos group of voice class, and downloading service class data belong to the Qos group of downloading class.After the Qos group of determining under traffic data type and the business datum, according to the Qos requirement of business datum, the business datum that identical Qos is required is combined as class Qos group, and upgrades the BSR information of this Qos group.
Step 202 is for all kinds of Qos groups are carried out resource allocation;
In this step, the MAC layer is according to the precedence information of BSR information and this Qos group of Qos group, the Qos type of selection scheduling; Simultaneously, situation according to available radio resources and physical control channel, be all kinds of Qos set of dispense resources: distributing radio resource, determine its modulation coding mode, and antenna multiplexed mode, thereby determine the data volume of the business datum of the Qos group that needs scheduling, will generate control information with this in follow-up.
Step 203 is carried out similar Qos group business datum multiplexing;
In this step,,, determine that such Qos organizes the data volume of each UE of the scheduling that comprises in business datum, and carry out the business datum of each UE multiplexing according to the priority of the UE that comprises in this Qos group for similar Qos group business datum.
Step 204 is determined the HARQ process that every class Qos group is transmitted;
In this step, every class Qos group is the corresponding a plurality of HARQ processes of possibility all, need be the HARQ process that every class Qos group is determined transmission.
Step 205, according to the scheduling situation generation corresponding control information of every class Qos group, and with control information multiplexing back transmission;
In this step, scheduling situation according to every class Qos group, form control information, the corresponding class Qos group of each control information, all kinds of Qos group control information corresponding are carried on physical control channel after multiplexing send to subordinate's website or higher level's website, send to physical layer simultaneously with the control physical layer process.
The scheduling situation comprise the every class Qos group business datum of scheduling data volume, carry the physical resource of such Qos group business datum, for example, physical resource such as subcarrier, time slot and the modulating-coding speed used etc.
About the control information form that generates, specifically describe again in follow-up.
Step 206 is sent to physical layer with multiplexing business datum and carries out physical layer process.
In this step, the business datum that all kinds of Qos after multiplexing are organized sends to physical layer, finishes corresponding processing by physical layer, comprises chnnel coding, modulation and physical channel mapping.The concrete coded system of using of physical layer, modulation type, physical channel are handled by the mode of determining in the step 202, and promptly the information that comprises according to the control information that receives from physical layer is handled.The processing and the existing procedure of physical layer are similar, do not repeat them here.
In the practical application, above-mentioned MAC layer also can carry out respectively the processing and the control information transmission of business datum.Below with transmitter side MAC layer transmitting scheduling information and to transmit multiplexing business datum be that example describes.
Under the distributed scheduling mode, the resource allocation of uplink business data transmission is controlled by higher level's website, subordinate's website sends dispatch request information to higher level's website, higher level's website is according to the BSR information in the dispatch request information, and the information such as uplink wireless channel quality that detect, determine the resource that uplink business data uses.Higher level's website is identical with dispatch request information to the schedule information that subordinate's website sends, and different is that the BSR information that schedule information comprises is reported by subordinate's website.
Fig. 3 in the scheduling of each internal trigger dispatching cycle user service data, produces schedule information for the schematic flow sheet of repeated link transmitter side MAC layer transmitting scheduling information of the present invention simultaneously, and referring to Fig. 3, this flow process comprises:
Step 302 according to the Qos requirement of business datum, is determined the priority of all kinds of Qos groups;
Step 303 determines that multiplexing similar Qos organizes the data volume of business datum;
In this step, according to the precedence information of the BSR information and all kinds of Qos group of all kinds of Qos group, the Qos type of selection scheduling; Simultaneously, situation according to present available radio resources and physical control channel, be respectively all kinds of Qos group selection corresponding radio resource, and determine the modulation coding mode and the antenna multiplexed mode of all kinds of Qos groups respectively, thereby determine the business datum amount of all kinds of Qos group schedulings.
Step 304 is respectively the HARQ process that all kinds of Qos groups are determined transmission;
In this step, every class Qos group is the corresponding a plurality of HARQ processes of possibility all, and therefore, the MAC layer need be respectively the HARQ process of the definite transmission of every class Qos group in all kinds of Qos groups.
In this step, the MAC layer is according to the scheduling situation of every class Qos, generates schedule information, and schedule information is carried on physical control channel after multiplexing sends to subordinate's website or higher level's website, sends to physical layer simultaneously.
Fig. 4 is the schematic flow sheet of repeated link transmitter side MAC layer service data transmission of the present invention, and referring to Fig. 4, this flow process comprises:
Step 402 is upgraded the BSR information that Qos organizes;
In this step, the MAC layer is determined the affiliated Qos group of traffic data type and business datum according to the numbering of the logic channel that receives business datum, and the business datum that identical Qos is required is combined as class Qos group, and upgrades the BSR information of this Qos group.
Step 403 is carried out the business datum that the similar Qos that dispatches organizes multiplexing;
In this step,, determine each UE is included in the data volume that needs the business datum of dispatching in such Qos group, and carry out the business datum of each UE multiplexing according to schedule information.
Step 404 sends to physical layer with multiplexing business datum and handles.
In this step, multiplexing business datum is sent to physical layer, finish corresponding processing, comprise chnnel coding, modulation and physical channel mapping by physical layer.
For the receiver side on the repeated link, corresponding with the transmitter side on the repeated link, receiver side receive information and handle after be sent to transmitter side.Cyclic redundancy check (CRC) code (the CRC that receiver side MAC layer comprises according to the Qos group business datum that receives, Cyclic Redundancy Check) object information, the Qos group business datum of determining to receive is correct, the Qos group business datum that receives is carried out send to rlc layer after the processing such as demultiplexing; The affirmation feedback information that forms Qos group business datum is sent to the MAC layer of transmitter side, and the non-affirmation feedback information of simultaneously Qos that forms being organized business datum is sent to the MAC layer of transmitter side; In the practical application, the MAC layer of receiver side can also carry out the affirmation feedback information of every class Qos group business datum correspondence or non-affirmation feedback information being sent to after multiplexing the MAC layer of transmitter side.
Fig. 5 is the schematic flow sheet of repeated link receiver side MAC layer service data transmission of the present invention, and referring to Fig. 5, this flow process comprises:
Step 501 receives the business datum of carrying cyclic redundancy check (CRC) code (CRC, CyclicRedundancy Check) check results information from physical layer;
Step 502 determines according to the CRC check object information whether the business datum that receives is correct;
In this step, the MAC layer receives the business datum of carrying the CRC check object information from physical layer, determines according to the CRC check object information that comprises whether the business datum that receives is correct, if it is correct to determine that business datum receives, execution in step 502, otherwise, this flow process finished.
Step 503 is carried out demultiplexing to the business datum that receives, and recovers Medium Access Control (MAC) Protocol Data Unit (PDU, the Protocol Data Unit) business datum of single UE;
In this step, the business datum that receives is carried out demultiplexing, revert to the MAC PDU business datum of each UE.
Step 504 reverts to RLC PDU business datum with MAC PDU business datum, sends to rlc layer.
Fig. 6 is the handling process schematic diagram of repeated link receiver side MAC layer of the present invention to feedback information, and referring to Fig. 6, this flow process comprises:
Step 601 receives the Qos group business datum of carrying the CRC check object information from physical layer;
Step 602 determines whether the Qos group business datum that receives is correct;
In this step, the MAC layer receives the Qos group business datum of carrying the CRC check object information from physical layer, determine according to the CRC check object information that comprises whether the Qos group business datum that receives is correct, if determining Qos group business datum receives correct, execution in step 603, otherwise, execution in step 604.
In this step, the Qos group business datum that receives is carried out demultiplexing, and form the ACK feedback information, be sent to transmitter side; Also the ACK feedback information of every class Qos group business datum correspondence can be carried out being sent to after multiplexing the MAC layer of transmitter side.
Below the multiplexed format of the control information that the present invention relates to is described.
(1) dispatch request information
RS sends UE dispatch request information to BS, and the information such as BSR of UE are provided, and is used for BS and carries out the scheduling decision use.
In the present embodiment, dispatch request information is granularity with the Qos type, and RS organizes according to all kinds of Qos, and corresponding dispatch request information is sent to BS, and the dispatch request information of a plurality of Qos groups is carried out multiplexing transmission.
Fig. 7 is the structural representation of dispatch request information of the present invention, and as shown in Figure 7, this dispatch request information comprises: Qos group quantity N, Qos group id (Qos ID) and the dispatch request information content (SR, Scheduling Request), wherein,
Qos organizes quantity N, identifies the quantity of the Qos group that comprises in this dispatch request information, and N is a natural number;
The Qos group id identifies the ID of each Qos group, for example, Qos1ID, Qos2ID ..., QosnID, n=N;
The dispatch request information content is the corresponding dispatch request relevant information of each Qos group, as buffer state etc., for example, Qos1SR, Qos2SR ..., Qosn SR, n=N.
In the practical application, business datum form and the dispatch request information of multiplexing UE are similar, do not repeat them here.
(2) downlink data feedback information
On the R-Link down direction, BS can send the business datum of a plurality of UE to RS, so RS also needs the feedback information with the business datum of a plurality of UE, and for example, ACK/NACK and CQI information send to BS.
Fig. 8 is the structural representation of downlink service data feedback information of the present invention, as shown in Figure 8, this downlink service data feedback information comprises: CQI feedback information, Qos group process number N, Qos group process ID and Qos group progress feedback (FeedBack) information, wherein
The CQI feedback information is used to feed back the channel quality on the repeated link;
Qos group process number N is used to identify the process number of the Qos group that this downlink service data feedback information comprises, and N is a natural number;
Qos organizes process ID, is used to identify the ID of the corresponding HARQ process of each Qos group
Qos group progress feedback information is used to identify the feedback information of the downlink service data of each HARQ process, for example, and ACK/NACK information.
(3) schedule information
Fig. 9 is the structural representation of schedule information of the present invention, and as shown in Figure 9, this schedule information comprises: and Qos group quantity N, Qos group id (Qos ID) and schedule information content (SI, SchedulingInformation), wherein,
Qos organizes quantity N, identifies the quantity of the Qos group that comprises in this schedule information, and N is a natural number;
The Qos group id identifies the ID of each Qos group, for example, Qos1ID, Qos2ID ..., QosnID, n=N;
The schedule information content is the corresponding scheduling relevant information of each Qos group, comprising: wireless bandwidth resource, modulation coding mode, HARQ relevant information, precoding relevant information etc., for example, Qos1 SI, Qos2SI ..., Qosn SI, n=N.
(4) uplink business data feedback information
Figure 10 is the structural representation of uplink business data feedback information of the present invention, as shown in figure 10, structure similar with Fig. 8, do not repeat them here, different with Fig. 8 is that this uplink business data feedback information does not comprise CQI information, and Qos group progress feedback information, be used to identify the feedback information of the uplink business data of each HARQ process, for example, ACK/NACK information.
On repeated link, consider backwards compatibility to LTE, transmit above four information, be dispatch request information, downlink service data feedback information, schedule information and uplink business data feedback information, can continue to use the physical control channel among the LTE, specifically
Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel) is used to carry dispatch request information and the downlink service data feedback information (ACK/NACK information and CQI information) that subordinate's website sends to higher level's website;
Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel) is used to carry the schedule information (up/descending) that higher level's website sends to subordinate's website;
Physical mixed automatic re-transmission indicating channel (PHICH, Physical Hybrid Automatic RepeatRequest Indicator Channel) is used to carry upstream data feedback information (ACK/NACK information).
As seen from the above-described embodiment, the method of a kind of distributed relay provided by the invention system distributed relay system transmissions control information, on repeated link, the MAC layer is according to the Qos requirement of business datum, the business datum of a plurality of UE that identical Qos is required is multiplexed with class Qos group, business datum for same item Qos group, its corresponding same control information, business datum for inhomogeneity Qos group, corresponding different control informations, and the business datum control information corresponding of every class Qos group is carried out multiplexing back transmit by physical control channel, can be according to business datum in the Qos of repeated link requirement, the business datum of flexmux repeated link and corresponding control information have guaranteed the Qos of business datum at repeated link; Simultaneously, because corresponding control information of class Qos group, greatly reduce the existing quantity of control information transmission on the repeated link when with UE being the scheduling granularity, avoided the scheduling relevant information of the business datum that the identical Qos of transmission requires on repeated link, also reduced feedback quantity accordingly, thereby reduced the time delay that control information is transmitted, improved real-time, the efficiency of transmission that has improved repeated link and the resource utilization of control information transmission; Further, all kinds of Qos group control information corresponding are carried out multiplexing, reduced the physical layer process that physical layer is carried out every class Qos group control information corresponding, saved the resource of physical layer; And, use the physical control channel identical to transmit with LTE, guaranteed backwards compatibility to LTE.
More than lift preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. the method for distributed relay system transmissions control information is characterized in that, this method may further comprise the steps:
The media interviews control MAC layer of repeated link transmitter side receives the business datum from Radio Link control rlc layer, for not belonging to the business datum of the user equipment (UE) that self links to each other, the business datum that receives is carried out the Qos group categories if determine business datum according to the Qos requirement of business datum;
For organizing to dispatch and generate described every class Qos according to the scheduling situation that every class Qos organizes, all kinds of Qos organize control information corresponding;
With described control information multiplexing back transmission.
2. the method for claim 1 is characterized in that, the step that the media interviews control MAC layer of described repeated link transmitter side receives from the business datum of Radio Link control rlc layer further comprises before:
The MAC layer of repeated link receiver side receives the Qos group business datum of carrying cyclic redundancy check (CRC) code CRC check object information from physical layer;
Determine that according to the CRC check object information Qos group business datum that receives is correct, the Qos group business datum of described reception is carried out demultiplexing, recover the Medium Access Control (MAC) Protocol Data Unit PDU business datum of single UE;
MAC PDU business datum is reverted to RLC PDU business datum, send to rlc layer.
3. method as claimed in claim 2 is characterized in that, the described Qos group business datum of determining to receive according to the CRC check object information correctly further comprises:
If determine that the Qos group business datum that receives is correct, form the MAC layer of confirming feedback information and being sent to transmitter side to receiving correct Qos group business datum;
If the Qos that determines to receive group business datum mistake generates non-affirmation feedback information and is sent to the MAC layer of transmitter side, and waits for the re-transmission of the Qos group business datum of described mistake.
4. method as claimed in claim 3 is characterized in that, describedly forms and confirms that feedback information further comprises receiving correct Qos group business datum: carry out the affirmation feedback information of every class Qos group business datum correspondence multiplexing.
5. the method for claim 1 is characterized in that, described Qos according to business datum requires that the business datum that receives is carried out the Qos group categories and specifically comprises:
The MAC layer is according to the numbering of the logic channel that receives business datum, after determining the affiliated Qos group of traffic data type and business datum, according to the Qos requirement of business datum, the business datum that identical Qos is required is combined as class Qos group, and upgrades the buffer status report BSR information of this Qos group.
6. method as claimed in claim 5 is characterized in that, the described scheduling specifically for all kinds of Qos groups comprises:
The MAC layer is according to the precedence information of BSR information and this Qos group of Qos group, the Qos type of selection scheduling, and, be all kinds of Qos set of dispense resources according to the situation of available radio resources and physical control channel;
According to the priority of the UE that comprises in the class Qos group, determine the data volume of each UE of the scheduling that comprises in the business datum of such Qos group, and carry out the business datum of each UE multiplexing;
The mixing of determining the transmission of every class Qos group retransmits the HARQ process automatically.
7. method as claimed in claim 6 is characterized in that, further comprises: the business datum of the group of all kinds of Qos after multiplexing is sent to physical layer carry out chnnel coding, modulation and physical channel mapping back and send.
8. the method for claim 1 is characterized in that, described scheduling situation comprises: the data volume of every class Qos group business datum, carry the physical resource and the modulating-coding speed of such Qos group business datum.
9. method as claimed in claim 4 is characterized in that, described control information comprises: uplink control information and down link control information.
10. method as claimed in claim 9 is characterized in that, described uplink control information comprises: dispatch request information and downlink service data feedback information.
11. method as claimed in claim 10 is characterized in that, described dispatch request information comprises: the Qos group quantity, each Qos group id and each the Qos group scheduling requested content that comprise in the dispatch request information.
12. method as claimed in claim 10 is characterized in that, described downlink service data feedback information comprises: channel quality indication feedback information, Qos group process number, Qos group process identification (PID) and Qos group progress feedback information.
13. method as claimed in claim 10 is characterized in that, transmits described uplink control information by Physical Uplink Control Channel.
14. method as claimed in claim 9 is characterized in that, described down link control information comprises: the feedback information of schedule information and uplink business data.
15. method as claimed in claim 14 is characterized in that, described schedule information comprises: Qos organizes quantity, each Qos group id and each Qos group scheduling information content.
16. method as claimed in claim 14 is characterized in that, described uplink business data feedback information comprises: Qos group process number, Qos group process identification (PID) and Qos group progress feedback information.
17. method as claimed in claim 14 is characterized in that, transmits described schedule information by Physical Downlink Control Channel, transmits described upstream data feedback information by the physical mixed automatic re-transmission indicating channel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103686692A (en) * | 2012-09-24 | 2014-03-26 | 华为技术有限公司 | Data transmission method and system, and macro base station, small base station and user equipment |
| WO2014056198A1 (en) * | 2012-10-12 | 2014-04-17 | 华为技术有限公司 | Method and apparatus for transmitting harq feedback |
| CN110771247A (en) * | 2018-05-22 | 2020-02-07 | 联发科技（新加坡）私人有限公司 | Method and apparatus for reporting hybrid automatic repeat request-acknowledgement information for different service types in mobile communication |
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| CN101141172B (en) * | 2006-09-07 | 2012-08-15 | 华为技术有限公司 | Transmission method and transmission system of wireless relay system |
| CN101286949A (en) * | 2008-06-06 | 2008-10-15 | 北京交通大学 | Wireless Mesh network MAC layer resource scheduling policy based on IEEE802.16d standard |
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| CN115280893A (en) * | 2020-03-21 | 2022-11-01 | 高通股份有限公司 | Sidelink communication recovery |
| CN117596689A (en) * | 2024-01-19 | 2024-02-23 | 为准（北京）电子科技有限公司 | Method and apparatus for transmitting uplink control information in wireless communication system |
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