CN101925077B - Transmission and indication method and device for relay system - Google Patents
Transmission and indication method and device for relay system Download PDFInfo
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Abstract
The invention provides a transmission and indication method for a relay system, which comprises the following steps: using a base station to send indication information to a terminal, wherein the indication information is used for indicating frequency band resource information of a special region transmitted by a relay downlink backhaul and the size of a control signal channel transmission region of the special region; using the base station to send scheduling signaling for transmitting downlink data to the terminal; and using the base station to send the downlink data on corresponding frequency band resources to the terminal. The technical scheme can solve the problem of utilizing the resources which are not occupied in the resources of a relay downlink backhaul link and fully utilize the downlink resources for providing services for users by carrying out distribution and indication on all the reserved resources which are not occupied by the relay downlink backhaul link.
Description
Technical field
The present invention relates to wireless communication field, particularly, the present invention relates to a kind of method and apparatus of transmission and indication of relay system.
Background technology
Mobile and broadband becomes the developing direction of modern communication technology, 3GPP (3rd GenerationPartnership Project, third generation partner program) be devoted to LTE (Long TermEvolution, Long Term Evolution) system is as the evolution of 3G system, and target is that development 3GPP wireless access technology is towards high data rate, the low delay and the evolution of optimization packet data application direction.In the mobile communication system in future, for example in rear three generations (B3G:Beyond three Generation) or LTE-A, system will provide higher peak data rate and cell data throughput, so system also needs wider transmission bandwidth.At present the following unappropriated radio frequency resources of 2GHz seldom, the part or all of bandwidth that the B3G system needs can only on higher frequency range, for example be sought on the frequency more than 3GHz.Frequency range is higher, and it is faster that radio wave propagation is decayed, and transmission range is shorter, therefore under the condition of same overlay area, guarantee continuous covering, needs more base station.Because the base station spends higher cost usually, this can increase the cost of arranging net of communication system undoubtedly.In order to reduce the cost of arranging net, each manufacturer and standardization body begin one's study RN (Relay Node, via node) are incorporated in cellular system, wish that the signal of energy expanding system covers and increase the capacity of system.Because via node RN only realizes simple data processing function usually, so cost reasonably uses RN to arrange net lower than the base station, can reach the purpose that reduces the cost of arranging net.
Relay transmission scheme in the LTE-A system studying with design process in, main design goal comprises the RN of (In-band) transmission in half-duplex and band.So-called half-duplex, i.e. the RN operation that can not receive simultaneously and send out on same frequency.In so-called band, be that identical frequency resource is used with transfer of data and the transfer of data between base station and Macro UE and Relay and Relay-UE between Relay in the base station, in relay system, the UE that is directly served by the base station is called Macro UE, and the UE that is directly served by Relay is called Relay-UE.
In relay system, frame structure can be divided into following regional:
Descending access zone, base station and RN send data to respectively Macro UE and Relay UE;
The down mixing zone, the base station sends data to RN and Macro UE;
Up access zone, Macro UE and Relay UE send data to respectively base station and RN;
Up Mixed Zone, Macro UE and RN send data to the base station.
In order to make the Relay network can compatible Rel-8UE, keep Relay UE and Macro UE that identical frame structure is arranged, just some subframe does not send or receives, adopted the mode of MBSFN subframe to realize the transfer of data of repeated link, as shown in Figure 1, be used for the schematic diagram of Relay frame transmission for the MBSFN subframe, this scheme is as follows:
In up Mixed Zone, when namely RN sent data to the base station, Relay UE mourned in silence and does not namely transmit any upward signal; In the down mixing zone, when to be the base station send data to RN, the frame structure of Relay is configured to the MBSFN subframe, namely there is the descending control signaling zone of 1 or 2 OFDM symbol, being used for Relay sends descending control signaling to the UE of its service (this moment, Relay can not receive the signal that comes from the base station, Relay receives the repeated link data that send the base station after this, and at this moment Relay does not send data to the UE of its service.Fig. 1 has provided the Relay transmission plan based on the tdd frame structure.In the down mixing zone, base-station transmission is the multiplexing data area transmission of together passing through the MBSFN subframe to the repeated link data of Relay and control signal.
At present the channel architecture of a kind of transmission of possible relay system and indication as shown in Figure 2, descending backhaul (backhaul) subframe by the definition relaying realizes.The descending backhaul subframe of relaying refers to the base station and sends the subframe of downlink data to RN.RN can become this sub-frame configuration the MBSFN subframe.on the OFDM of front several control areas symbol, the base station can send PCFICH (PhysicalControl Format Indication Channel, Physical Control Format Indicator Channel), PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel), PHICH (PhysicalHARQ Indication Channel, physical mixed automatic repeat request indicating channel), RN sends PDCCH for its UE simultaneously, these signals can be the system compatibles with 3GPP Rel-8, this moment, RN can not receive the PDCCH that the base station sends on identical OFDM symbol.Be to be used for transmitting PDSCH at the later OFDM symbol of the OFDM of front several control areas symbol, also can be used for simultaneously the descending back haul link of relaying.Transmission for the descending back haul link of relaying, need to be at descending PDSCH (Physical Downlink Shared Channel, one section special area on frequency domain is set Physical Downlink Shared Channel), special area as shown in Figure 2, control area in this zone, be the R-PCFICH/R-PDCCH/R-PHICH part, with the data area be that R-PDSCH is time-multiplexed, wherein be designated the channel of communicating by letter with via node with R-for the ease of understanding.Control area length is indicated by R-PCFICH.What wherein R-PCFICH took is first OFDM symbol of special area, and the position of its transmission and the band resource of special area have fixing mapping relations.Special area takies continuous or discrete M PRB pair on frequency domain, the frequency domain position that this M PRB is right can be that prenotice to Relay the base station, also can adjust by semi-static method.
Yet usually the descending back haul link of relaying has adopted the mode of semi-static resource reservation to transmit, and the descending back haul link that relaying often can occur can not take the situation that all reserve resources, for example as shown in Figure 3 situation.Therefore be necessary to propose corresponding technical scheme, carry out the reasonable distribution utilization for the unappropriated resource in the descending back haul link resource of relaying, thereby effectively improve systematic function.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, particularly not taking all reservation resources by the descending back haul link to relaying distributes and indicates, the problem of the utilization of the unoccupied resource in the descending back haul link resource of solution relaying.
In order to achieve the above object, one aspect of the present invention has proposed a kind of method of transmission and indication of relay system, it is characterized in that, comprise the following steps: the base station sends indication information to terminal, and described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region; Described base station sends the dispatch of downlink data transmission to described terminal; Described base station sends downlink data to described terminal on corresponding band resource.
The present invention has also proposed a kind of method of transmission and indication of relay system on the other hand, comprise the following steps: terminal receives the indication information that the base station sends, and described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region; Terminal receives the base station and sends PDCCH, obtains current self the resource indication of PDSCH transmission, judge that according to described resource indication current PDSCH transmits the band resource S-PDSCH of the special area that whether takies the descending backhaul transport of relaying; Described terminal receives corresponding PDSCH data.
The present invention has also proposed a kind of base station on the other hand, comprises sending module and computing module,
Described sending module is used for to sending indication information, is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region, and sends the dispatch of downlink data transmission to described terminal; Described computing module is used for according to described indication information and described dispatch, the number b that the brachymemma PRB that comprises in the number a that the General Physics Resource Block PRB that comprises in Computational Physics DSCH Downlink Shared Channel PDSCH is right and special-purpose Physical Downlink Control Channel S-PDSCH is right, and calculate corresponding transmission block size TBS; Described sending module sends downlink data to described terminal according to the corresponding TBS that described computing module obtains on corresponding band resource.
The present invention has also proposed a kind of terminal on the other hand, comprises receiver module and judge module,
Described receiver module is used for receiving the indication information that the base station sends, described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region, receive the base station and send PDCCH, obtain current self the resource indication of PDSCH transmission, judge according to described resource indication whether current PDSCH transmission takies the band resource S-PDSCH of the special area of the descending backhaul transport of relaying, and be used for receiving corresponding PDSCH data; Described judge module is used for judging according to described resource indication whether current PDSCH transmission takies the available band resource S-PDSCH of the special area of the descending backhaul transport of relaying, and determines corresponding PDSCH data.
The technical scheme that the present invention proposes, not taking all reservation resources by the descending back haul link to relaying distributes and indicates, the problem of the utilization of the unoccupied resource in the descending back haul link resource of solution relaying takes full advantage of downlink resource and provides service for the user.The such scheme that the present invention proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is the schematic diagram that the MBSFN subframe is used for the transmission of Relay frame;
Fig. 2 is the schematic diagram of the channel architecture of relay system;
Fig. 3 is the schematic diagram that there is idling-resource in relay system;
Fig. 4 is the schematic diagram of resource indication type 0;
Fig. 5 is the schematic diagram of resource indication Class1;
Fig. 6 is the flow chart of the method base station side of a kind of transmission of relay system and indication;
Fig. 7 is the schematic diagram of transmission and the indication of relay system;
Fig. 8 is the flow chart of the method end side of a kind of transmission of relay system and indication;
Fig. 9 is the transmission of relay system and the structural representation of indicating equipment.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
For the ease of understanding the present invention, the below simply introduces the mode of resource indication in LTE.
The mode that is used for the resource indication in LTE mainly contains 3 kinds: resource indication type 0, resource indication Class1, resource indication type 2.Specifically provided detailed definition at 36.213 kinds, be briefly described below:
Resource indication type 0:
In the LTE system, the implementation of resource indication type 0 is by with the granularity of P Resource Block (RB) as scheduling of resource, if there is N in system so
RBIndividual resource, the resource with system is divided into so
Individual resource group is indicated the resource group that takies by the mode of Bitmap, its bit number is
The size of P is relevant with the bandwidth of system.Need to adjust according to the bandwidth of carrier aggregation the size of P in LTE-A, specifically as shown in Figure 4.
Resource indication Class1:
In the LTE system, the implementation of resource indication Class1 is with the granularity of P Resource Block (RB) as scheduling of resource, if there is N in system so
RBIndividual resource, the resource with system is divided into so
Individual resource group is the P subset with whole set of resources, uses
Individual bit represents the numbering of the subset of resource group, adopt 1 bit to represent that the original position of resource is (from the numbering of the RB of minimum, or from the numbering of the RB of maximum), represent that with the mode of bitmap the resource of subset in each resource group indicates, its bit number is
Specifically as shown in Figure 5.The position that the positional representation resource indication Class1 indicating means of its hollow can not be indicated, but can be by the indication of change original position.Resource indication type 0 is the same with the bit number that resource indication Class1 takies.The size of P is relevant with the bandwidth of system.Need to adjust according to the bandwidth of carrier aggregation the size of P in LTE-A.
Resource indication type 2:
The form of PDCCH DCI comprises the multiple format types such as 1A, 1B, 1C, 1D in LTE.
For PDCCH DCI format 1A, 1B or 1D, Type 2 to as base unit, indicates continuous resource with RIV take PRB, wherein, RIV by initial PRB to position (RB
Start) and continuous P RB to number (L
CRBs).
The coding method program representation of RIV is
if
then
else
L wherein
CRBs〉=1 and be no more than
For PDCCH DCI format 1C, Type 2 with
Individual PRB is to being base unit, wherein
The number right to total PRB of system is relevant, and RIV can indicate original position
With continuous resource size
The coding method program representation of RIV is
if
then
else
Wherein
And
While L '
CRBs〉=1 and be no more than
In order to realize the present invention's purpose, the present invention proposes a kind of method of transmission and indication of relay system, comprise the following steps: the base station sends indication information to terminal, and described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region; Described base station sends the dispatch of downlink data transmission to described terminal; Described base station sends downlink data to described terminal on corresponding band resource.
As shown in Figure 6, the flow chart for the method base station side of a kind of transmission of relay system and indication comprises the following steps:
S101: the base station sends indication information to terminal, is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region.
As shown in Figure 7, be the schematic diagram of transmission and the indication of relay system.Below in conjunction with Fig. 7, various embodiment are described.
In step S101, the base station sends indication information, and indication information comprises sending by S-PDCCH (Special Physical Downlink control Channel, special-purpose Physical Downlink Control Channel) or high-level signaling to be realized.As shown in Figure 7, for example send S-PDCCH to terminal, indication is at the particular location of the band resource M of the special area of the descending backhaul transport of relaying, and the size of the symbolic number N of special area control channel transmission region.
Particularly, all R10 terminals need to be notified in the base station, the terminal of LTE-A system namely, the operating position of the band resource of the special area that is used for the descending backhaul transport of relaying of system configuration in current subframe.
For example, in control information zone, base station, introduce a new control channel S-PDCCH, be used for notifying the particular location of band resource M of the special area that is used for the descending backhaul transport of relaying of the current subframe system configuration of all R10 terminals, and the size of the symbolic number N of special area control channel transmission region, and the size of the symbolic number N of special area control channel transmission region.
When the band resource of special area is continuous distribution, adopt the resource of above-mentioned introduction to distribute the mode of type 2 to carry out the indication of resource, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area.For example, determining to reserve under the condition of resource requirement, suitable resource indication granularity is carried out the resource indication according to reserving resource selection.
When being discontinuously arranged, adopt the resource of above-mentioned introduction to distribute type 0 or resource to distribute the mode of Class1 to carry out the indication of resource when the band resource of special area, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area.
In addition, the size of special area control channel transmission region adopts the method indication of bit quantization.For example: if the maximum of N is 4, can adopt so 2 bits to indicate.Number of bits also can be relevant to the situation of N possibility value simultaneously, and for example: the value that N can get is 2 or 3, can adopt so 1 bit to indicate.
When S-PDCCH sends above-mentioned information, can define new Downlink Control Information DCI form, the information field of described DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI (Radio Network TemporaryIdentifier, Radio Network Temporary Identifier) described DCI form is carried out scrambling, make all R10 terminals all obtain this information.
Perhaps, when S-PDCCH sends above-mentioned information, reuse the DCI form of existing format 1C, the resource block assignments information field of described DCI form comprises the band resource information of special area, the transport block size index information field of described DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out scrambling.
For the R8 terminal, the terminal of LTE system namely, this terminal is to cannot see newly-increased S-PDCCH.S-PDCCH can be put into the public search space of PDCCH, adopt simultaneously a predefined RNTI (Radio Network Temporary Identifier, Radio Network Temporary Identifier) to carry out scrambling, make all R10 terminals all obtain this information.
In addition, also available by adopting high-level signaling to notify all R10 terminals, the band resource information of the special area that is used for the descending backhaul transport of relaying of system configuration and the size of special area control channel transmission region in current subframe.For example by RRC (Radio Resource Control, RRM) signaling is utilized the band resource information of special area of the semi-static indication of high-rise control signal or change relaying descending backhaul transport and the size of special area control channel transmission region.
The descending scheduling of downlink data transmission of signaling utilize S-PDSCH to carry out to(for) the R10 terminal is at the PDCCH indicating.
S102: the base station sends the dispatch of downlink data transmission to terminal.
In step S102, the base station sends the dispatch of downlink data transmission to terminal, by the information that obtains in dispatch and step S101, the base station is according to described indication information and described dispatch, determine the right number b of brachymemma PRB that comprises in number a that the General Physics Resource Block PRB that comprises in Physical Downlink Shared Channel PDSCH is right and special-purpose Physical Downlink Shared Channel S-PDSCH, and calculate corresponding transmission block size TBS, send downlink data with the TBS that obtains to terminal on corresponding band resource in step S103.
For example, when base station specified data bag was carried by common PDSCH and/or S-PDSCH, the judgement bearing mode adopted following any one mode that comprises:
A ≠ 0 and b=0, the expression packet is dispatched fully on common PDSCH and is transmitted;
A=0 and b ≠ 0, the expression packet is dispatched on S-PDSCH carry fully;
A ≠ 0 and b ≠ 0, the expression packet carries on common PDSCH and S-PDSCH simultaneously.
Owing to can resource being different from common PDSCH channel on S-PDSCH, be the resource section after brachymemma, i.e. the Physical Resource Block PRB of brachymemma pair, as shown in Figure 5, therefore, need to determine the numerical value of transmission block size TBS of the special area of the descending backhaul transport of relaying.
Brachymemma PRB to the OFDM symbol that comprises is:
Determine the OFDM symbolic number T that subframe comprises, determine the OFDM symbolic number K that control information zone, base station comprises, determine the OFDM symbolic number N that the control information zone of the special area of the descending backhaul transport of relaying comprises;
So the OFDM symbolic number that the right transmission block of brachymemma PRB comprises is T-K-N.
For the ease of the compatibility of system, determine that usually the transmission block size of the special area of the descending backhaul transport of relaying can also adopt in the conversion mode, brachymemma PRB to the PRB that is used for calculating TBS to being:
Calculate commutation factor β,
Or
Wherein, N ' is fixing average control information zone, base station symbolic number, and K ' is the regional symbolic number of the control information of fixing average special area.
The Physical Resource Block PRB that the transmission block of the special area of the descending backhaul transport of relaying is corresponding to size is
N ' wherein
PRBRepresent the right number of PRB that takies in corresponding S-PDSCH.
For example, in the situation based on conventional CP, the OFDM symbolic number that comprises in subframe is 14, and the symbolic number that takies for R-PDSCH and S-PDSCH so is 14-N-K, is equivalent to PDSCH has been carried out intercept.In addition, consider the change-over time of sending/receiving formula, the length of special area as above can be less than 14-K symbol.Can also adopt a fixing commutation factor to calculate: adopt a fixing commutation factor β to calculate, be similar in the LTE system this calculation method for DwPTS,
N ' wherein
PRBRepresent the right number of PRB that takies in corresponding S-PDSCH.
Take conventional CP as example, wherein the calculating of β can be:
Can be also perhaps
Wherein N ' is equivalent to the control character length of a fixing average special area, i.e. a fixing average 2 of OFDM symbolic number in base station control information zone.
S103: the base station sends downlink data to terminal on corresponding band resource.
In step S103, the base station sends downlink data to terminal on corresponding band resource, and namely packet is carried by common PDSCH and/or S-PDSCH.
The base station need to select suitable TBS to carry out transfer of data.Calculating transmission block size TBS comprises:
When a ≠ 0 and b=0, the number that PRB is right is N
PRB=a passes through N
PRBValue is calculated corresponding TBS; When a=0 and b ≠ 0, the number that PRB is right is
Pass through N
PRBValue is calculated corresponding TBS; When a ≠ 0 and b ≠ 0, the number that PRB is right is
Pass through N
PRBValue is calculated corresponding TBS.
For example, defined the method that the TBS size is determined in 3GPP TS36.213, specific as follows:
At first according to the mapping relations of table 1 by MCS (Modulation and Coding Scheme, modulation coding mode) search index to the TBS index, wherein the index information of MCS is by the dispatch notification terminal by the base station.
Modulation and the TBS concordance list of table 1PDSCH
Then according to the TBS index that obtains, determine the size of TBS by table 2, only provided the right number of PRB here and be the form in 1～10 situation, other situation is specifically seen the definition in 3GPP TS36.213.
Table 2TBS table
Pass through above-mentioned steps, the base station has realized that the descending back haul link to relaying does not take all and reserves resources and distribute and indicate, the problem of the utilization of the unoccupied resource in the descending back haul link resource of solution relaying takes full advantage of downlink resource and provides service for the user.
In order to realize the present invention's purpose, the present invention has also proposed a kind of method of transmission and indication of relay system on the other hand, comprise the following steps: terminal receives the indication information that the base station sends, and described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region; Terminal receives the base station and sends PDCCH, obtains current self the resource indication of PDSCH transmission, judge that according to described resource indication current PDSCH transmits the band resource S-PDSCH of the special area that whether takies the descending backhaul transport of relaying; Described terminal receives corresponding PDSCH data.
As shown in Figure 8, the flow chart for the method base station side of a kind of transmission of relay system and indication comprises the following steps:
S201: terminal receives the indication information that the base station sends, and is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region.
As shown in Figure 7, be the schematic diagram of transmission and the indication of relay system.Below in conjunction with Fig. 7, various embodiment are described.
In step S201, terminal receives high-level signaling or the S-PDCCH that the base station sends, and obtains the information of band resource S-PDSCH of the special area of the descending backhaul transport of relaying, i.e. the position of frequency band M and and the big or small N of special area control channel transmission region.As shown in Figure 7, for example send S-PDCCH to terminal, indication is at the particular location of the band resource M of the special area of the descending backhaul transport of relaying, and the size of the symbolic number N of special area control channel transmission region.
For example, terminal receives the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region by special-purpose Physical Downlink Control Channel S-PDCCH, or obtains the band resource information of special area of semi-static indication or the descending backhaul transport of change relaying and the size of special area control channel transmission region by receiving high-rise control signal.
Wherein, when the band resource of special area is continuous distribution, can adopt the resource of above-mentioned introduction to distribute the mode of type 2 to carry out the indication of resource, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area.For example, determining to reserve under the condition of resource requirement, suitable resource indication granularity is carried out the resource indication according to reserving resource selection.When being discontinuously arranged, can adopt the resource of above-mentioned introduction to distribute type 0 or resource to distribute the mode of Class1 to carry out the indication of resource when the band resource of special area, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area.
In addition, the size of special area control channel transmission region adopts the method indication of bit quantization.For example: if the maximum of N is 4, can adopt so 2 bits to indicate.Number of bits also can be relevant to the situation of N possibility value simultaneously, and for example: the value that N can get is 2 or 3, can adopt so 1 bit to indicate.
Therefore, terminal can receive the Downlink Control Information DCI form of new definition, the information field of described DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out the blind check reception.
In addition, terminal can also receive the DCI form of reusing existing format 1C, the resource block assignments information field of described DCI form comprises the band resource information of special area, the transport block size index information field of described DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out the blind check reception.
S202: terminal receives the base station and sends PDCCH, judges whether current PDSCH transmission takies the available band resource of the special area of the descending backhaul transport of relaying.
In step S202, terminal receives the base station and sends PDCCH, obtains current self the resource indication of PDSCH transmission, judge that according to described resource indication current PDSCH transmits the available band resource S-PDSCH of the special area that whether takies the descending backhaul transport of relaying.For example, the R10 terminal is carried out blind check by the PDCCH channel that the base station is sent, know current oneself the resource indication of PDSCH transmission, judge that according to the information in the resource indication current PDSCH transmits the band resource of the special area that whether takies the descending backhaul transport of relaying.
S203: terminal receives corresponding PDSCH data.
In step S203, the judged result according to step 202 operates accordingly.
When the current PDSCH of described resource indication judgement transmits the available band resource information of the special area that takies the descending backhaul transport of relaying, described terminal receives R-PCFICH information, determine the position of the initial OFDM symbol of S-PDSCH, and the common PRB that comprises according to PDSCH to the brachymemma PRB that comprises with S-PDSCH to carrying out the detection of packet.
Terminal is indicated with resource according to the indication information that the base station sends, and determines the right number b of brachymemma PRB that comprises in number a that the common PRB that comprises in Physical Downlink Shared Channel PDSCH is right and special-purpose Physical Downlink Shared Channel S-PDSCH.When a=0 and b ≠ 0, the expression packet is dispatched on S-PDSCH carry fully; When a ≠ 0 and b ≠ 0, the expression packet carries on common PDSCH and S-PDSCH simultaneously.
Data for the special area that receives the descending backhaul transport of relaying, the numerical value that terminal need to obtain the transmission block size TBS of data could correctly detect and receive, therefore, at first need to calculate brachymemma PRB to being used for calculating PRB pair of transmission block size TBS, specifically comprise:
Calculate commutation factor β,
Or
Wherein, N ' is fixing average control information zone, base station symbolic number, K ' is the regional symbolic number of the control information of fixing average special area, T is the OFDM symbolic number that subframe comprises, K is the OFDM symbolic number that control information zone, base station comprises, N is the OFDM symbolic number that the control information zone of the special area of the descending backhaul transport of relaying comprises;
The Physical Resource Block PRB that the TBS of the special area of the descending backhaul transport of relaying is corresponding to size is
N ' wherein
PRBThe right number of PRB that takies in the corresponding S-PDSCH of the resource indication information territory indicating of expression dispatch.
Therefore, the PRB that takies according to common PDSCH and S-PDSCH comprises the detection that number carries out packet:
When a=0 and b ≠ 0, the number that PRB is right is
When a ≠ 0 and b ≠ 0, the number that PRB is right is
Pass through N
PRBValue is calculated corresponding TBS; Carry out the detection of packet according to corresponding TBS.
For example, if the part of the band resource that takies special area is arranged in current PDSCH, need so R-PCFICH is carried out blind check, thus the initial OFDM character position of definite S-PDSCH.The PRB that takies according to the S-PDSCH of common PDSCH and brachymemma simultaneously carries out the detection of packet to number.The calculating of concrete TBS is undertaken by the above-mentioned scheme of introducing.
If do not take the part of the band resource of special area in the transmission of the current PDSCH of indicating terminal, terminal is carried out the detection of packet according to common PDSCH.That is, when the current PDSCH of resource indication judgement transmitted the band resource information of the special area that does not take the descending backhaul transport of relaying, packet was dispatched on PDSCH carry fully, when the number that the common PRB that takies as PDSCH is right is a, and N
PRB=a; Pass through N
PRBValue is calculated corresponding TBS; Carry out the detection of packet according to corresponding TBS.
Via node also carries out the detection of data according to the method that the transmission block size of the R-PDSCH of brachymemma is determined, definite scheme of R-PDSCH transmission block size TBS is:
Calculate commutation factor β,
Or
Wherein, N ' is fixing average control information zone, base station symbolic number, and K ' is the regional symbolic number of the control information of fixing average special area;
The Physical Resource Block PRB that the TBS of the special area of the descending backhaul transport of relaying is corresponding to size is
N ' wherein
PRBRepresent the right number of PRB that takies in corresponding S-PDSCH, according to N
1 PRBObtain corresponding TBS, thereby carry out follow-up Data Detection and reception.
As shown in Figure 9, the invention allows for a kind of base station 100, comprise sending module 110 and computing module 120.
A kind of base station is characterized in that, comprises sending module 110 and computing module 120,
Wherein, sending module 110 is used for to sending indication information, is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region, and sends the dispatch of downlink data transmission to terminal 300; Computing module 120 is used for according to indication information and dispatch, the number b that the brachymemma PRB that comprises in the number a that the General Physics Resource Block PRB that comprises in Computational Physics DSCH Downlink Shared Channel PDSCH is right and special-purpose Physical Downlink Shared Channel S-PDSCH is right, and calculate corresponding transmission block size TBS; Sending module 110 sends downlink data to terminal 300 according to the corresponding TBS that computing module 120 obtains on corresponding band resource.
Embodiment as the said equipment, indication information comprises sending module 110 by the band resource information of the special area of the special-purpose Physical Downlink Control Channel S-PDCCH notification terminal 300 descending backhaul transport of relaying and the size of special area control channel transmission region, or sending module 110 is by the band resource information of the special area of the semi-static indication of high-rise control signal or the descending backhaul transport of change relaying and the size of special area control channel transmission region.
Embodiment as the said equipment, the Downlink Control Information DCI form that sending module 110 definition are new also sends to terminal 300, the information field of DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, the DCI form is carried out scrambling.
Embodiment as the said equipment, sending module 110 is reused the DCI form of existing format 1C and is sent to terminal 300, the resource block assignments information field of DCI form comprises the band resource information of special area, the transport block size index information field of DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, the DCI form is carried out scrambling.
As shown in Figure 9, the invention allows for a kind of terminal 300, comprise receiver module 310 and judge module 320.
Wherein, receiver module 310 is used for receiving the indication information that base station 100 sends, indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region, receive base station 100 and send PDCCH, obtain current self the resource indication of PDSCH transmission, indication judges whether current PDSCH transmission takies the band resource S-PDSCH of the special area of the descending backhaul transport of relaying according to resource, and is used for receiving corresponding PDSCH data; Judge module 320 is used for indication judges whether current PDSCH transmission takies the available band resource S-PDSCH of the special area of the descending backhaul transport of relaying according to resource, and determines corresponding PDSCH data.
Embodiment as the said equipment, receiver module 310 receives the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region by special-purpose Physical Downlink Control Channel S-PDCCH, or obtains the band resource information of special area of semi-static indication or the descending backhaul transport of change relaying and the size of special area control channel transmission region by receiving high-rise control signal.
Embodiment as the said equipment, receiver module 310 receives the Downlink Control Information DCI form of new definition, the information field of DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, the DCI form is carried out the blind check reception.
Embodiment as the said equipment, receiver module 310 receives the DCI form of reusing existing format 1C, the resource block assignments information field of DCI form comprises the band resource information of special area, the transport block size index information field of DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, the DCI form is carried out the blind check reception.
The technique scheme that the present invention proposes, not taking all reservation resources by the descending back haul link to relaying distributes and indicates, the problem of the utilization of the unoccupied resource in the descending back haul link resource of solution relaying takes full advantage of downlink resource and provides service for the user.The such scheme that the present invention proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
One of ordinary skill in the art will appreciate that and realize that all or part of step that above-described embodiment method is carried is to come the relevant hardware of instruction to complete by program, described program can be stored in a kind of computer-readable recording medium, this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The technique scheme that the present invention proposes, not taking all reservation resources by the descending back haul link to relaying distributes and indicates, the problem of the utilization of the unoccupied resource in the descending back haul link resource of solution relaying takes full advantage of downlink resource and provides service for the user.The such scheme that the present invention proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
One of ordinary skill in the art will appreciate that and realize that all or part of step that above-described embodiment method is carried is to come the relevant hardware of instruction to complete by program, described program can be stored in a kind of computer-readable recording medium, this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. the method for the transmission of a relay system and indication, is characterized in that, comprises the following steps:
The base station sends indication information to terminal, and described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region;
Described base station sends the dispatch of downlink data transmission to described terminal;
Described base station is according to described indication information and described dispatch, the number b that the brachymemma PRB that comprises in the number a that the General Physics Resource Block PRB that comprises in Computational Physics DSCH Downlink Shared Channel PDSCH is right and special-purpose Physical Downlink Shared Channel S-PDSCH is right, and calculate corresponding transmission block size TBS; And
Described base station is determined to send downlink data according to the TBS that calculates to described terminal on common PDSCH and/or S-PDSCH.
2. the method for the transmission of relay system as claimed in claim 1 and indication, is characterized in that, described indication information comprises by special-purpose Physical Downlink Control Channel S-PDCCH or the transmission of high-rise control signal.
3. the method for the transmission of relay system as claimed in claim 2 and indication, it is characterized in that, described indication information comprises by special-purpose Physical Downlink Control Channel S-PDCCH notifies the band resource information of special area of the descending backhaul transport of described terminal relay and the size of special area control channel transmission region, or the band resource information of the special area by the semi-static indication of high-rise control signal or the descending backhaul transport of change relaying and the size of special area control channel transmission region.
4. the method for the transmission of relay system as claimed in claim 1 and indication, is characterized in that,
When the band resource of described special area is continuous distribution, adopt resource to distribute the mode of type 2 to carry out the indication of resource, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area;
When being discontinuously arranged, adopt resource to distribute type 0 or resource to distribute the mode of Class1 to carry out the indication of resource when the band resource of described special area, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area;
The size of described special area control channel transmission region adopts the method indication of bit quantization.
5. the method for the transmission of relay system as claimed in claim 4 and indication, it is characterized in that, define new Downlink Control Information DCI form, the information field of described DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out scrambling.
6. the method for the transmission of relay system as claimed in claim 4 and indication, it is characterized in that, reuse the DCI form of existing format 1C, the resource block assignments information field of described DCI form comprises the band resource information of special area, the transport block size index information field of described DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out scrambling.
7. the method for the transmission of a relay system and indication, is characterized in that, comprises the following steps:
Terminal receives the indication information that the base station sends, and described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region;
Terminal receives the PDCCH that the base station sends, and obtains current self the resource indication of PDSCH transmission, judge that according to described resource indication current PDSCH transmits the band resource S-PDSCH of the special area that whether takies the descending backhaul transport of relaying;
When the current PDSCH of described resource indication judgement transmits the band resource S-PDSCH of the special area that takies the descending backhaul transport of relaying, described terminal receives R-PCFICH information, determine the position of the initial OFDM symbol of S-PDSCH, and the common PRB that comprises according to PDSCH to the brachymemma PRB that comprises with S-PDSCH to carrying out the detection of packet;
And when the current PDSCH of described resource indication judgement transmitted the band resource S-PDSCH of the special area that does not take the descending backhaul transport of relaying, described terminal was carried out the detection of packet according to common PDSCH.
8. the method for the transmission of relay system as claimed in claim 7 and indication, is characterized in that, described terminal receives described indication information by special-purpose Physical Downlink Control Channel S-PDCCH or high-rise control signal.
9. the method for the transmission of relay system as claimed in claim 8 and indication, it is characterized in that, described terminal receives the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region by special-purpose Physical Downlink Control Channel S-PDCCH, or obtains the band resource information of special area of semi-static indication or the descending backhaul transport of change relaying and the size of special area control channel transmission region by receiving high-rise control signal.
10. the method for the transmission of relay system as claimed in claim 7 and indication, is characterized in that,
When the band resource of described special area is continuous distribution, adopt resource to distribute the mode of type 2 to carry out the indication of resource, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area;
When being discontinuously arranged, adopt resource to distribute type 0 or resource to distribute the mode of Class1 to carry out the indication of resource when the band resource of described special area, wherein the granularity of resource indication is determined by the demand of the middle reservation resource of special area;
The size of described special area control channel transmission region adopts the method indication of bit quantization.
11. the transmission of relay system as claimed in claim 10 and the method for indication, it is characterized in that, described terminal receives the Downlink Control Information DCI form of new definition, the information field of described DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out the blind check reception.
12. the transmission of relay system as claimed in claim 10 and the method for indication, it is characterized in that, described terminal receives the DCI form of reusing existing format 1C, the resource block assignments information field of described DCI form comprises the band resource information of special area, the transport block size index information field of described DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out the blind check reception.
13. a base station is characterized in that, comprises sending module and computing module,
Described sending module is used for sending indication information to terminal, is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region, and sends the dispatch of downlink data transmission to described terminal;
Described computing module is used for according to described indication information and described dispatch, the number b that the brachymemma PRB that comprises in the number a that the General Physics Resource Block PRB that comprises in Computational Physics DSCH Downlink Shared Channel PDSCH is right and special-purpose Physical Downlink Shared Channel S-PDSCH is right, and calculate corresponding transmission block size TBS;
Described sending module determines that the corresponding TBS that obtains according to described computing module sends downlink data to described terminal on common PDSCH and/or S-PDSCH.
14. base station as claimed in claim 13, it is characterized in that, described indication information comprises that described sending module notifies the band resource information of special area of the descending backhaul transport of described terminal relay and the size of special area control channel transmission region by special-purpose Physical Downlink Control Channel S-PDCCH, or described sending module is by the band resource information of the special area of the semi-static indication of high-rise control signal or the descending backhaul transport of change relaying and the size of special area control channel transmission region.
15. base station as claimed in claim 14, it is characterized in that, the Downlink Control Information DCI form that described sending module definition is new also sends to described terminal, the information field of described DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out scrambling.
16. base station as claimed in claim 14, it is characterized in that, described sending module is reused the DCI form of existing format 1C and is sent to described terminal, the resource block assignments information field of described DCI form comprises the band resource information of special area, the transport block size index information field of described DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out scrambling.
17. a terminal is characterized in that, comprises receiver module and judge module,
Described receiver module is used for receiving the indication information that the base station sends, described indication information is used to indicate the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region, receive the PDCCH that the base station sends, obtain current self the resource indication of PDSCH transmission, judge according to described resource indication whether current PDSCH transmission takies the band resource S-PDSCH of the special area of the descending backhaul transport of relaying, and be used for receiving corresponding PDSCH data;
Described judge module is used for judging according to described resource indication whether current PDSCH transmission takies the available band resource S-PDSCH of the special area of the descending backhaul transport of relaying, and definite corresponding PDSCH data,
When the current PDSCH of described resource indication judgement transmits the band resource S-PDSCH of the special area that takies the descending backhaul transport of relaying, described terminal receives R-PCFICH information, determine the position of the initial OFDM symbol of S-PDSCH, and the common PRB that comprises according to PDSCH to the brachymemma PRB that comprises with S-PDSCH to carrying out the detection of packet;
And when the current PDSCH of described resource indication judgement transmitted the band resource S-PDSCH of the special area that does not take the descending backhaul transport of relaying, described terminal was carried out the detection of packet according to common PDSCH.
18. terminal as claimed in claim 17, it is characterized in that, described receiver module receives the band resource information of special area of the descending backhaul transport of relaying and the size of special area control channel transmission region by special-purpose Physical Downlink Control Channel S-PDCCH, or obtains the band resource information of special area of semi-static indication or the descending backhaul transport of change relaying and the size of special area control channel transmission region by receiving high-rise control signal.
19. terminal as claimed in claim 18, it is characterized in that, described receiver module receives the Downlink Control Information DCI form of new definition, the information field of described DCI form comprises the band resource information of special area and the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out the blind check reception.
20. terminal as claimed in claim 18, it is characterized in that, described receiver module receives the DCI form of reusing existing format 1C, the resource block assignments information field of described DCI form comprises the band resource information of special area, the transport block size index information field of described DCI form comprises the size of special area control channel transmission region, and with predefined R-RNTI, described DCI form is carried out the blind check reception.
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| CN102791036B (en) * | 2011-05-17 | 2016-01-13 | 华为技术有限公司 | Transmit the method for Downlink Control Information, access device, subscriber equipment and system |
| CN102938934B (en) * | 2011-08-15 | 2018-03-23 | 中兴通讯股份有限公司 | A kind of resource allocation method and device of control channel information |
| CN102316535B (en) * | 2011-09-30 | 2014-04-02 | 电信科学技术研究院 | Transmission method for downlink control information and equipment |
| CN110545157B (en) * | 2012-10-31 | 2023-11-28 | 华为技术有限公司 | Scrambling code sequence configuration method, scrambling code sequence configuration device, user equipment and base station |
| EP2830345B1 (en) | 2013-03-21 | 2019-07-24 | Huawei Device Co., Ltd. | Data transmission method, base station, and user equipment |
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| JP2018512774A (en) | 2015-03-03 | 2018-05-17 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Method and apparatus for uplink data transmission |
| CN107637161B (en) * | 2015-05-14 | 2021-07-23 | 苹果公司 | Base station device, relay user equipment device and base station |
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