CN102160408B - Method, mobile station, base station and relay station for receiving data in a downlink data frame - Google Patents
Method, mobile station, base station and relay station for receiving data in a downlink data frame Download PDFInfo
- Publication number
- CN102160408B CN102160408B CN200880131144.3A CN200880131144A CN102160408B CN 102160408 B CN102160408 B CN 102160408B CN 200880131144 A CN200880131144 A CN 200880131144A CN 102160408 B CN102160408 B CN 102160408B
- Authority
- CN
- China
- Prior art keywords
- preamble
- relay station
- base station
- community
- frequency unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
A method for receiving data in a downlink data frame by a mobile station is provided according to the present invention. The method includes: acquiring a preamble from the header of a received downlink data frame; identifying the base station/relay station (BS/RS) indication and the RS ID by searching a preamble index table according to the acquired preamble, wherein the preamble index table establishes the index relationship among the preambles, phases, cell IDs, BS/RS indications and RS IDs; acquiring the frame control header (FCH) information in a given time-frequency element according to the identified BS/RS indication and the RS ID; acquiring the corresponding downlink MAP message in a given time-frequency element according to the downlink MAP location information included in the FCH information; and acquiring the burst data in the downlink data frame according to the location information of the downlink burst data included in the received corresponding downlink MAP message.
Description
Technical field
The present invention relates to method, travelling carriage, base station and the relay station of the data in a kind of receiving downlink data frame, can be suitable for those positions, particularly WiMAX (World Interoperability for Microwave Access, WiMax) multi-hop relay communication system that relay station and base station are operated in the communication system of identical frequency segmentation and can cover communication system medium frequency inadequate resource.
Background technology
Up to the present, IEEE 802.16 standards have defined two kinds of trunking schemes, i.e. transparent relay and nontransparent relaying in IEEE 802.16.Transparent RS (relay station) is transmission frame preamble, FCH (frame control header) and MAP (access mapping) message not.The MS of transparent RS (travelling carriage) directly receives these control messages from BS (base station).RS is the data service between relaying BS and MS only, as shown in Figure 1.
In order to ensure the reliable reception of control information, the MS associated with transparent RS must be positioned at BS coverage.Like this, transparent RS can be only strengthens for the throughput of cell edge.Transparent RS is operated in identical frequency segmentation with BS.
In IEEE 802.16e and IEEE 802.16j, frequency segmentation is the subclass of available OFDMA (OFDM access) sets of sub-channels.Whole available OFDMA subchannel is divided into three segmentations.A segmentation is for disposing single MAC example.Three segmentations can be supported three sector cells of frequency reuse 1, as shown in Figure 2.Overall deployment system is supported in this configuration.
Different from transparent RS, nontransparent RS is relay data business not only, and it goes back transmission frame preamble, FCH and MAP message, as shown in Figure 3.Because BS and RS transmit its oneself preamble, FCH and MAP message in the header of frame simultaneously, BS and RS must avoid interference with different frequency segmentations.Like this, nontransparent RS should have the frequency segmentation different from BS.
Compare with transparent RS, nontransparent RS not only can strengthen the throughput of cell edge, and it can also expanded areas of coverage and removal coverage hole.
As the above mentioned, for the network of frequency reuse 1, three frequency segmentations are enough to support overall deployment system.But only three frequency segmentations will limit nontransparent relay application.For example, in Fig. 4, coverage hole 1 and coverage hole 2 are away from the overlapping area of coverage of three frequency segmentations.Nontransparent relaying can utilize remaining segmentation, that is, and and the relay station frequency of utilization segmentation 2 of coverage hole 1 and the relay station frequency of utilization segmentation 1 of coverage hole 2.But, for being arranged in the overlapping region of these three frequency segmentations or near those coverage holes (coverage hole 3 and coverage hole 4), do not have segmentation to can be used for them.For these coverage holes, arrange nontransparent relaying and may cause interference.
In the requirement of the advanced air interface of IEEE 802.16m, multi-hop relay is an important requirement.Current, more consistent selection is to define IEEE802.16m relaying according to the basic thought of the nontransparent relaying of IEEE 802.16j.
Current, preferred plan is non-transparent relay, and it can be realized, and throughput strengthens and area of coverage expansion.Nontransparent relaying is in header place transmission preamble, FCH and the MAP message of each frame, and as shown in Figure 5, thus, it must avoid the interference with BS with different frequency segmentations.This means that nontransparent RS should have the frequency segmentation separated with BS.Therefore, they cannot, for those positions of frequency resource deficiency, for example, be arranged in the overlapping region of three frequency segmentations or near those positions.
Summary of the invention
In order to overcome the above-mentioned defect of prior art, the present invention has been proposed.The object of the invention is to propose method, travelling carriage, base station and the relay station of the data in a kind of receiving downlink data frame, can be suitable for those positions that relay station and base station are operated in the communication system of identical frequency segmentation and can cover communication system medium frequency inadequate resource.
According to the present invention, a kind of method of the data in travelling carriage receiving downlink data frame has been proposed, described method comprises: from the header of received downlink data frame, obtain preamble; By searching for preamble index table according to obtained preamble, the indication of identification base station/relay station and relay station ID, described preamble index table has been set up the index relative between preamble, segmentation, community ID, the indication of base station/relay station and relay station ID; According to the indication of identified base station/relay station and relay station ID, obtain the frame control header FCH information in specific time frequency unit; According to the downlink map MAP positional information comprising in FCH information, obtain the corresponding down link MAP message in specific time frequency unit; And the positional information of the downlink burst data that comprise according to obtained corresponding down link MAP message obtains the bursty data in downlink data frame.
Preferably, the FCH information of base station and the FCH information of each relay station are separated from one another and be arranged in order in time frequency unit.
Preferably, the down link MAP message of base station and the down link MAP information of each relay station are separated from one another in time frequency unit.
Preferably, the downlink burst data of base station and the downlink burst data of each relay station are separated from one another in time frequency unit.
Preferably, for each segmentation and community ID couple, a plurality of different preambles are set in described preamble index table, described a plurality of preamble is cross-correlation, caused interference while adopting described preamble for avoiding having the base station of same segment and community ID and relay station, described in there is the base station of same segment and community ID and relay station in same community.
Preferably, the preamble subcarriers set of each segmentation in described preamble index table is divided into a plurality of groups, and one of a plurality of groups for base station, and all the other groups in a plurality of groups are respectively used to each relay station.
Preferably, base station and the relay station with same segment and community ID take different preamble subcarriers set, described in there is the base station of same segment and community ID and relay station in same community.
Preferably, in described preamble index table, preamble subcarriers set is divided into a plurality of groups, and each segmentation is assigned with a group in a plurality of groups.
Preferably, described method also comprises: according to the bursty data in obtained downlink data frame, obtain the up link MAP message in specific time frequency unit.
Preferably, described method also comprises: positional information and the information relevant with range channel of according to obtained up link MAP message, obtaining the uplink burst data in uplink data frames.
Preferably, described method is suitable for World Interoperability for Microwave Access, WiMax WiMAX multi-hop relay communication system.
In addition, according to the present invention, also proposed the travelling carriage of the data in a kind of receiving downlink data frame, described travelling carriage comprises: receiving system, receiving downlink data frame; The first acquisition device, obtains preamble from the header of received downlink data frame; Recognition device, by searching for preamble index table according to the preamble being obtained by the first acquisition device, the indication of identification base station/relay station and relay station ID, described preamble index table has been set up the index relative between preamble, segmentation, community ID, the indication of base station/relay station and relay station ID; The second acquisition device, obtains the frame control header FCH information in specific time frequency unit according to the indication of identified base station/relay station and relay station ID; The 3rd acquisition device, obtains the corresponding down link MAP message in specific time frequency unit according to the downlink map MAP positional information comprising in FCH information; And the 4th acquisition device, the positional information of the downlink burst data that comprise according to obtained corresponding down link MAP message obtains the bursty data in downlink data frame.
In addition, according to the present invention, also proposed a kind of for generating the base station of the downlink data frame sending to travelling carriage, described base station comprises: acquisition device, according to the segmentation of oneself, the indication of base station/relay station and community ID, search preamble index table, obtains preamble and preamble subcarriers set; The first generating apparatus, according to the preamble being obtained by described acquisition device, leads preamble subcarriers set by preamble modulation, generates preamble transmitted signal; The second generating apparatus, according to base station/relay station, the specific time frequency unit at frame control header FCH information place is determined in indication, frame is controlled to header FCH information and be modulated to described time frequency unit, delta frame is controlled header FCH information transmitted signal; The 3rd generating apparatus, controls according to frame the downlink map MAP positional information that header FCH information comprises, and down link MAP message is modulated to specific time frequency unit, generates down link MAP message transmitted signal; And the 4th generating apparatus, the positional information of the downlink burst data that comprise according to down link MAP message, is modulated to downlink burst data in specific time frequency unit, generates downlink burst data transmitted signal.
Preferably, described base station also comprises the 5th generating apparatus, and the positional information of the up link MAP message comprising according to down link MAP message is modulated to up link MAP message in specific time frequency unit, generates up link MAP message transmitted signal.
In addition, according to the present invention, a kind of generation has also been proposed to the relay station of the downlink data frame of travelling carriage relaying, described relay station comprises: acquisition device, according to the segmentation of oneself, the indication of base station/relay station, community ID and relay station ID, search preamble index table, obtains preamble and preamble subcarriers set; The first generating apparatus, according to the preamble being obtained by described acquisition device, leads preamble subcarriers set by preamble modulation, generates preamble transmitted signal; The second generating apparatus, determines that according to the indication of base station/relay station and relay station ID frame controls the specific time frequency unit at header FCH information place, frame is controlled to header FCH information and be modulated to described time frequency unit, delta frame control header FCH information transmitted signal; The 3rd generating apparatus, controls according to frame the downlink map MAP positional information that header FCH information comprises, and down link MAP message is modulated to specific time frequency unit, generates down link MAP message transmitted signal; And the 4th generating apparatus, the positional information of the downlink burst data that comprise according to down link MAP message, is modulated to downlink burst data in specific time frequency unit, generates downlink burst data transmitted signal.
Preferably, described relay station also comprises: the 5th generating apparatus, the positional information of the up link MAP message comprising according to down link MAP message, is modulated to up link MAP message in specific time frequency unit, generates up link MAP message transmitted signal.
As mentioned above, the present invention proposes a kind of new trunking method for IEEE 802.16m, to solve the above application limitation in nontransparent relaying.In the method, nontransparent relay station can be shared identical frequency segmentation with its base station.This can avoid interference.By the method, relay station can be deployed in those positions that can use without independent frequency segmentation.
Accompanying drawing explanation
By reference to below in conjunction with accompanying drawing to adopted detailed description of preferred embodiment, above-mentioned purpose of the present invention, advantage and feature will become apparent, wherein:
Fig. 1 is the schematic diagram of the transparent relay of prior art;
Fig. 2 is the schematic diagram of configuration of the frequency reuse 1 of three sectors, prior art Mei community;
Fig. 3 is the schematic diagram of the nontransparent relaying of prior art;
Fig. 4 is for the schematic diagram of deployment issue of the nontransparent relaying of prior art is described;
Fig. 5 is the BS frame of nontransparent relaying of prior art and the schematic diagram of the frame structure of repeater frame;
Fig. 6 is according to the schematic diagram of the frame structure of the BS frame of the embodiment of the present invention and repeater frame;
Fig. 7 is the schematic diagram distributing for the FCH subchannel of all segmentations in IEEE 802.16e and IEEE 802.16j;
Fig. 8 is the schematic diagram distributing according to the FCH subchannel for all segmentations of the embodiment of the present invention;
Fig. 9 is according to the flow chart of the method for the data for receiving downlink data frame of the embodiment of the present invention;
Figure 10 is according to the block diagram of the travelling carriage of the data for receiving downlink data frame of the embodiment of the present invention;
Figure 11 be according to the embodiment of the present invention for generating the block diagram of the base station of downlink data frame; And
Figure 12 be according to the embodiment of the present invention for generating the block diagram of the relay station of downlink data frame.
Embodiment
The preferred embodiments of the present invention are described below with reference to the accompanying drawings.
In the solution of the present invention, RS has inherited the essential characteristic of nontransparent relaying, that is, RS is relay data business and all control messages (preamble, FCH and MAP message) simultaneously.But compare with nontransparent relaying, the RS in the solution of the present invention can be operated in the frequency segmentation identical with its BS.By various dividing methods (time-division/frequency division/code minute), overcome interference problem.Frame structure shown in Fig. 6 shows the principle of the solution of the present invention.
In the solution of the present invention, for the communication that is similar to nontransparent relaying between BS and RS, DL (down link) and UL (up link) relay area have also been defined.By R-FCH and R-MAP, controlling this communicates by letter.Significantly, these relay area do not have interference problem between BS and RS.
For the communication between the communication between BS and MS and RS and MS, DL and UL access area have also been defined respectively.For fear of interference, DL/UL bursty data and the DL/UL bursty data in RS frame in BS frame should take different OFDMA time frequency unit group, as shown in Figure 6.Range channel is code minute competitive channel, and BS and RS can share identical OFDMA time frequency unit group.
The FCH of the FCH of BS and MAP and RS and MAP also should be assigned with different time frequency unit group.For this purpose, the solution of the present invention is incorporated into preamble and FCH by new function.
First, the FCH of BS and the FCH of RS can provide MAP positional information.In IEEE 802.16e and IEEE802.16j, the MAP of BS and the MAP of RS always have fixed position in frame.BS and RS do not need to MS indication MAP position.Thus, in FCH, there is not MAP positional information.But in the solution of the present invention, MAP position is also revocable.In order to allow MS find out this MAP, FCH should indicate MAP position, that is, and and the first time frequency unit of MAP.
Secondly, preamble can be impliedly to MS indication FCH position.As MAP, in IEEE 802.16e and IEEE 802.16j, FCH has default location.It always takies front four time frequency unit of each segmentation.But in the solution of the present invention, the FCH of BS is assigned to front 6 time frequency unit, and the FCH of RS must be assigned to follow-up time frequency unit.In order to allow MS find out the FCH of RS, the solution of the present invention provides the special relationship between the FCH position that two methods set up preamble and RS.The first method is for RS defines new preamble, and the cross correlation due between BS preamble and RS preamble, has solved the interference problem between preamble.The second method is for RS, to divide the preamble carrier wave of independent separate, and the difference due to BS and RS preamble carrier wave subcarrier, has solved preamble interference.By new index relative, except segmentation and IDcell (community ID), MS can also know frame source (BS or RS) and IDrelay (relay station ID).Here, IDrelay is used for the FCH of RS to carry out index.For example, BS supports three RS, and it can carry out index by IDrelay 0,1,2.IDrelay is in such a way corresponding to FCH position:
--IDrelay0 is corresponding to RS FCH position 0, and it is followed after BS FCH;
IDrelay1 is corresponding to RS FCH position 1, and it is followed after RS FCH 0;
--IDrelay0 is corresponding to RS FCH position 2, and it is followed after RS FCH 1.
The solution of the present invention has expanded the function of preamble so that it is distinguished BS and RS, and can carry out index to RSFCH.
By above technical scheme, RS can be operated in identical segmentation with BS.This RS is very suitable for cannot obtaining for RS those positions of independent frequency segmentation.
In IEEE 802.16e and IEEE 802.16j, the first symbol of BS frame and RS frame is preamble.The basic function of preamble is that PHY (physical layer) is synchronous.All preamble subcarriers are divided into three sub-carrier set.Utilize following equation to define preamble subcarriers set:
PreambleCarrierSet
n＝n+3k.
PreambleCarrierSet wherein
nall subcarriers of distributing to specific preamble have been specified;
N is that index is 0 ... the number of 2 preamble subcarriers set;
K is operation index, for example, for 2K-FFT, be 0 to 567, for 1024-FFT, is 0 to 283.
Preamble is used promotes BPSK modulation, by specific pseudo noise (PN) code, those subcarriers of preamble subcarriers set is modulated.These preamble subcarriers set are in such a way corresponding to three segmentations:
--preamble subcarriers set 0 is used in segmentation 0;
--preamble subcarriers set 1 is used in segmentation 1;
--preamble subcarriers set 2 is used in segmentation 2.
Note, for preamble subcarriers set be different for the frequency allocation plan of segmentation.Segmentation and its preamble subcarriers set have different subcarrier set.
Except synchronizing function, preamble is also impliedly determined segmentation and IDcell.IDcell is by the foundation of the subcarrier permutation as in each subchannel.A segmentation has a plurality of IDcell and selects.When MS utilizes preamble synchronous, this MS by by preamble and segmentation and IDcell between index relative know frequency segmentation and subcarrier permutation pattern.According to its segmentation, this MS can find FCH position, because FCH always takies front four time frequency unit in the DL part of this segmentation, as shown in Figure 7.Therefore, this MS can find out the FCH at default location place.
In this scheme, for fear of interference, RS FCH will take the position different from BS FCH, that is, RS FCH will be assigned with BS FCH time frequency unit afterwards, as shown in Figure 8.Here, suppose that BS supports maximum 3 RS.This RS can be indicated by IDrelay.RS FCH and BS FCH have identical length, that is, and and 6 time frequency unit.Once MS has known IDrelay, this MS can find out FCH position.Relation between IDrelay and FCH position is as follows:
--IDrelay0 is corresponding to FCH position 1;
--IDrelay1 is corresponding to FCH position 2;
--IDrelay2 is corresponding to FCH position 3.
When MS utilizes preamble synchronous, except knowing segmentation and IDcell, this MS also knows frame source (BS or RS) and IDrelay.For this purpose, this scheme has been set up particular kind of relationship between preamble and RS.
Meanwhile, in this scheme, RS preamble also takies this first OFDMA symbol, and shares identical preamble subcarriers set with BS.Therefore, in this scheme, should consider the interference problem between BS and RS.
Exist two kinds of methods to set up RS index by preamble:
Method 1:BS preamble and RS preamble all take all subcarriers of preamble subcarriers set.Cross correlation by pseudo noise (PN) code overcomes the interference between BS preamble and RS preamble or between two RS.This scheme is not specified the generating algorithm of PN sequence, can use existing generating algorithm or other algorithms in IEEE 802.16e.Table 1 has provided the example of the index relative of preamble and segmentation, IDcell, BS/RS indication and IDrelay, has wherein supposed:
--preamble PN length is 284 bits, corresponding to 1024FFT pattern;
--each segmentation has 8 IDcell;
--each BS can support maximum three RS.
In table 1, for any segmentation and IDcell couple, there are 4 preambles.These 4 preambles are that cross-correlation is to avoid the interference when they are present in same cells.By table 1, once MS receives preamble, this MS by this table 1 of inspection to determine that it is BS or RS frame.If RS frame, its IDrelay of the further index of MS.According to this IDrelay, MS will find out FCH position further to operate.
The example of the index relative of table 1 the first method (1024-FFT pattern)
Method 2: the preamble subcarriers set of segmentation is divided into a plurality of groups, for example 4 groups.Group for BS and other 3 groups for RS.Significantly, because BS takies different preamble subcarriers set with its relay station, the second method can solve preamble interference problem preferably.Can utilize following equation to define preamble subcarriers set:
PreambleCarrierSet
n，m＝n+3m+12k.
PreambleCarrierSet wherein
nall subcarriers of distributing to specific preamble have been specified;
N is that index is 0 ... the number of 2 preamble subcarriers set;
M is that index is 0 ... the number of 3 preamble code character;
K is operation index, for example, for 2K-FFT, be 0 to 141, for 1024-FFT, is 0 to 71.
In the method, all preamble subcarriers will be divided into 12 groups:
--preamble subcarriers set 0, group 0: the BS with fragment number 0;
--preamble subcarriers set 0, group 1: the RS 1 (IDrelay=0) with fragment number 0;
--preamble subcarriers set 0, group 2: the RS 2 (IDrelay=1) with fragment number 0;
--preamble subcarriers set 0, group 3: the RS 3 (IDrelay=2) with fragment number 0;
--preamble subcarriers set 1, group 0: the BS with fragment number 1;
--preamble subcarriers set 1, group 1: the RS 1 (IDrelay=0) with fragment number 1;
--preamble subcarriers set 1, group 2: the RS 2 (IDrelay=1) with fragment number 1;
--preamble subcarriers set 1, group 3: the RS 3 (IDrelay=2) with fragment number 1;
--preamble subcarriers set 2, group 0: the BS with fragment number 2;
--preamble subcarriers set 2, group 1: the RS 1 (IDrelay=0) with fragment number 2;
--preamble subcarriers set 2, group 2: the RS 2 (IDrelay=1) with fragment number 2;
--preamble subcarriers set 2, group 3: the RS 3 (IDrelay=2) with fragment number 2.
In the second method, it is shorter that preamble length becomes, and 1/4 of the preamble length in IEEE 802.16e, for example, for 2K-FFT, be 142 subcarriers or be 71 subcarriers for 1024-FFT.This scheme is not specified the generating algorithm of preamble, can use generating algorithm or other algorithms in IEEE 802.16e.Table 2 has provided the example of the index relative of preamble and segmentation, IDcell, BS/RS indication and IDrelay.The condition of supposing is identical with method 1.By this relation, once MS has found preamble, this MS will know which subcarrier set is this preamble carrier wave set belong to, and further identify segmentation, IDcell, BS/RS indication and IDrelay (for FCH position).Second party method has defined the new preamble structure therefor for hop relay network.
The example of the index relative of table 2 the second method (1024-FFT pattern)
FCH is that frame is controlled header, is used for subchannels bitmap that transmission used and the MAP transmission mode of current segmentation.In IEEE 802.16e and IEEE 802.16j, FCH takies front 4 time frequency unit of the DL part of segmentation.These time frequency unit comprise by QPSK take encoding rate as 1/2 and repeated encoding modulate as 4.Each FCH comprises the DL frame prefix of 24 bits, and the DL frame prefix of this 24 bit will be replicated to form 48 bit blocks.The DL frame prefix of this 24 bit comprises:
-the subchannels bitmap used: 6 bits (0: groups of subchannels 0; 1: groups of subchannels 1 ...)
-repeated encoding indication: 2 bits (0: repeated encoding not on DL-MAP; 1: repeated encoding is 2; 2: repeated encoding is 4; 3: repeated encoding is 6)
-coding indication: 3 bits (0: the CC coding using on DL-MAP; 1:BTC; 2:CTC; 3:ZT CC; 4:LDPC; 5-7: retain)
-DL-MAP length: 8 bits
-retain: 5 bits
MAP in frame has defined the use for the time interval of the MS bursty data of downlink subframe and uplink sub-frames.In IEEE 802.16e and IEEE 802.16j, the MAP of each segmentation always this time frequency unit after FCH starts to be mapped to the time frequency unit group of this segmentation according to the preferential order of frequency.Like this, existing FCH does not indicate the positional information of MAP position.But in this scheme, BS and RS are operated in identical segmentation.For fear of interference, the MAP of BS and the MAP of RS should be assigned to different time frequency unit group.Like this, except above information, FCH should comprise the positional information of DL-MAP.The positional information of DL-MAP is represented to have 12 bit long by DL-MAP_Start, pointed out the initial time frequency unit of MAP.Therefore, the DL frame prefix in this scheme is 36 bits, and the total length of FCH is 72 bits.FCH in this scheme will take 6 time frequency unit.
All MAP in this scheme will be mapped to FCH time frequency unit afterwards.It should take one group of continuous time frequency unit, and this continuous time frequency unit is from the time frequency unit after last FCH.
For access area, in this scheme, BS and RS are by the public resource of its MS of combined dispatching, that is, DL/UL bursty data and the DL/UL bursty data in RS frame in BS frame should take different OFDMA time frequency unit.This MS bursty data will define in corresponding MAP.For the relay area in this scheme, there is no difference with the relay area of nontransparent relaying.
Fig. 9 is according to the flow chart of the method for the data for receiving downlink data frame of the embodiment of the present invention.
As shown in Figure 9, according to the present invention, in step 901, from the header of received downlink data frame, obtain preamble.In step 903, by searching for preamble index table according to obtained preamble, the indication of identification base station/relay station and relay station ID, described preamble index table has been set up the index relative between preamble, segmentation, community ID, the indication of base station/relay station and relay station ID.In step 905, according to the indication of identified base station/relay station and relay station ID, obtain the frame control header FCH information in specific time frequency unit.In step 907, according to the downlink map MAP positional information comprising in FCH information, obtain the corresponding down link MAP message in specific time frequency unit.Then, in step 909, the positional information of the downlink burst data that comprise according to obtained corresponding down link MAP message obtains the bursty data in downlink data frame.
By way of parenthesis, method of the present invention is further comprising the steps of: in step 911, according to the bursty data in obtained downlink data frame, obtain the up link MAP message in specific time frequency unit; In step 913, according to obtained up link MAP message, obtain positional information and the information relevant with range channel of the uplink burst data in uplink data frames.
Figure 10 is according to the block diagram of the travelling carriage of the data for receiving downlink data frame of the embodiment of the present invention.
As shown in figure 10, travelling carriage according to the present invention comprises: receiving system 1001, the first acquisition device 1003, recognition device 1005, the second acquisition device 1007, the 3rd acquisition device 1009, the 4th acquisition device 1011, the 5th acquisition device 1013 and the 6th acquisition device 1015.Receiving system 1001 receiving downlink data frames.The first acquisition device 1003 obtains preamble from the header of received downlink data frame.Recognition device 1005 is by searching for preamble index table according to the preamble being obtained by the first acquisition device, the indication of identification base station/relay station and relay station ID, described preamble index table has been set up the index relative between preamble, segmentation, community ID, the indication of base station/relay station and relay station ID.The second acquisition device 1007 obtains the frame control header FCH information in specific time frequency unit according to the indication of identified base station/relay station and relay station ID.The 3rd acquisition device 1009 obtains the corresponding down link MAP message in specific time frequency unit according to the downlink map MAP positional information comprising in FCH information.The positional information of the downlink burst data that the 4th acquisition device 1011 comprises according to obtained corresponding down link MAP message obtains the bursty data in downlink data frame.The 5th acquisition device 1013 obtains the up link MAP message in specific time frequency unit according to the bursty data in obtained downlink data frame.The 6th acquisition device 1015 obtains positional information and the information relevant with range channel of the uplink burst data in uplink data frames according to obtained up link MAP message.
Figure 11 be according to the embodiment of the present invention for generating the block diagram of the base station of downlink data frame.
As shown in figure 11, base station according to the present invention comprises: acquisition device 1101, the first generating apparatus 1103, the second generating apparatus 1105, the 3rd generating apparatus 1107, the 4th generating apparatus 1109, the 5th generating apparatus 1111.Acquisition device 1101 is according to the segmentation of oneself, the indication of base station/relay station and community ID, and search preamble index table, obtains preamble and preamble subcarriers set.The first generating apparatus 1103, according to the preamble being obtained by described acquisition device, is led preamble subcarriers set by preamble modulation, generates preamble transmitted signal.The second generating apparatus 1105 is controlled the specific time frequency unit at header FCH information place according to the definite frame of base station/relay station indication, frame is controlled to header FCH information and be modulated to described time frequency unit, and delta frame is controlled header FCH information transmitted signal.The 3rd generating apparatus 1107 controls according to frame the downlink map MAP positional information that header FCH information comprises, and down link MAP message is modulated to specific time frequency unit, generates down link MAP message transmitted signal.The positional information of the downlink burst data that the 4th generating apparatus 1109 comprises according to down link MAP message, is modulated to downlink burst data in specific time frequency unit, generates downlink burst data transmitted signal.The positional information of the up link MAP message that the 5th generating apparatus 1111 comprises according to down link MAP message, is modulated to up link MAP message in specific time frequency unit, generates up link MAP message transmitted signal.
Figure 12 be according to the embodiment of the present invention for generating the block diagram of the relay station of downlink data frame.
As shown in figure 12, relay station according to the present invention comprises: acquisition device 1201, the first generating apparatus 1203, the second generating apparatus 1205, the 3rd generating apparatus 1207, the 4th generating apparatus 1209, the 5th generating apparatus 1211.Acquisition device 1201 is according to the segmentation of oneself, the indication of base station/relay station, community ID and relay station ID, and search preamble index table, obtains preamble and preamble subcarriers set.The first generating apparatus 1203, according to the preamble being obtained by described acquisition device, is led preamble subcarriers set by preamble modulation, generates preamble transmitted signal.The second generating apparatus 1205 is determined the specific time frequency unit at frame control header FCH information place according to the indication of base station/relay station and relay station ID, frame is controlled to header FCH information and be modulated to described time frequency unit, and delta frame is controlled header FCH information transmitted signal.The 3rd generating apparatus 1207 controls according to frame the downlink map MAP positional information that header FCH information comprises, and down link MAP message is modulated to specific time frequency unit, generates down link MAP message transmitted signal.The positional information of the downlink burst data that the 4th generating apparatus 1209 comprises according to down link MAP message, is modulated to downlink burst data in specific time frequency unit, generates downlink burst data transmitted signal.The positional information of the up link MAP message that the 5th generating apparatus 1211 comprises according to down link MAP message, is modulated to up link MAP message in specific time frequency unit, generates up link MAP message transmitted signal.
The present invention proposes a kind of new trunking plan.Relaying of the present invention can be expanded BS coverage, and strengthens throughput, but does not need extra frequency resource.Although RS is operated in the frequency segmentation identical with its BS, RS can not disturb BS.Meanwhile, this scheme can minimize the impact on neighbor bss and existing WiMAX network.The present invention is supplementing the nontransparent relaying of IEEE 802.16m.
Compare with the nontransparent trunking plan of tradition, the solution of the present invention does not need separated frequency segmentation.The present invention can be for those positions of frequency resource deficiency, for example in the overlapping region of three segmentations in frequency reuse 1 network or near those coverage holes.
Although below show the present invention in conjunction with the preferred embodiments of the present invention, one skilled in the art will appreciate that without departing from the spirit and scope of the present invention, can carry out various modifications, replacement and change to the present invention.Therefore, the present invention should not limited by above-described embodiment, and should be limited by claims and equivalent thereof.
Claims (42)
1. a method for the data in travelling carriage receiving downlink data frame, described method comprises:
From the header of received downlink data frame, obtain preamble,
By searching for preamble index table according to obtained preamble, the indication of identification base station/relay station and relay station ID, described preamble index table has been set up the index relative between preamble, segmentation, community ID, the indication of base station/relay station and relay station ID;
According to the indication of identified base station/relay station and relay station ID, obtain the frame control header FCH information in specific time frequency unit;
According to the downlink map MAP positional information comprising in FCH information, obtain the corresponding down link MAP message in specific time frequency unit; And
The positional information of the downlink burst data that comprise according to obtained corresponding down link MAP message obtains the bursty data in downlink data frame.
2. method according to claim 1, wherein the FCH information of base station and the FCH information of each relay station are separated from one another and be arranged in order in time frequency unit.
3. method according to claim 1, wherein the down link MAP message of base station and the down link MAP information of each relay station are separated from one another in time frequency unit.
4. method according to claim 1, wherein the downlink burst data of base station and the downlink burst data of each relay station are separated from one another in time frequency unit.
5. method according to claim 1, wherein for each segmentation and community ID couple, a plurality of different preambles are set in described preamble index table, described a plurality of preamble is cross-correlation, caused interference while adopting described preamble for avoiding having the base station of same segment and community ID and relay station, described in there is the base station of same segment and community ID and relay station in same community.
6. method according to claim 1, the preamble subcarriers set of each segmentation in wherein said preamble index table is divided into a plurality of groups, and one of a plurality of groups for base station, and all the other groups in a plurality of groups are respectively used to each relay station.
7. method according to claim 6, base station and the relay station wherein with same segment and community ID take different preamble subcarriers set, described in there is the base station of same segment and community ID and relay station in same community.
8. method according to claim 1, wherein, in described preamble index table, preamble subcarriers set is divided into a plurality of groups, and each segmentation is assigned with a group in a plurality of groups.
9. method according to claim 1, wherein also comprises:
According to the bursty data in obtained downlink data frame, obtain the up link MAP message in specific time frequency unit.
10. method according to claim 9, wherein also comprises:
According to obtained up link MAP message, obtain positional information and the information relevant with range channel of the uplink burst data in uplink data frames.
11. methods according to claim 1, described method is suitable for World Interoperability for Microwave Access, WiMax WiMAX multi-hop relay communication system.
The travelling carriage of the data in 12. 1 kinds of receiving downlink data frames, described travelling carriage comprises:
Receiving system, receiving downlink data frame;
The first acquisition device, obtains preamble from the header of received downlink data frame;
Recognition device, by searching for preamble index table according to the preamble being obtained by the first acquisition device, the indication of identification base station/relay station and relay station ID, described preamble index table has been set up the index relative between preamble, segmentation, community ID, the indication of base station/relay station and relay station ID;
The second acquisition device, obtains the frame control header FCH information in specific time frequency unit according to the indication of identified base station/relay station and relay station ID;
The 3rd acquisition device, obtains the corresponding down link MAP message in specific time frequency unit according to the downlink map MAP positional information comprising in FCH information; And
The 4th acquisition device, the positional information of the downlink burst data that comprise according to obtained corresponding down link MAP message obtains the bursty data in downlink data frame.
13. travelling carriages according to claim 12, wherein the FCH information of base station and the FCH information of each relay station are separated from one another and be arranged in order in time frequency unit.
14. travelling carriages according to claim 12, wherein the down link MAP message of base station and the down link MAP information of each relay station are separated from one another in time frequency unit.
15. travelling carriages according to claim 12, wherein the downlink burst data of base station and the downlink burst data of each relay station are separated from one another in time frequency unit.
16. travelling carriages according to claim 12, wherein for each segmentation and community ID couple, a plurality of different preambles are set in described preamble index table, described a plurality of preamble is cross-correlation, caused interference while adopting described preamble for avoiding having the base station of same segment and community ID and relay station, described in there is the base station of same segment and community ID and relay station in same community.
17. travelling carriages according to claim 12, the preamble subcarriers set of each segmentation in wherein said preamble index table is divided into a plurality of groups, and one of a plurality of groups for base station, and all the other groups in a plurality of groups are respectively used to each relay station.
18. travelling carriages according to claim 17, wherein have the base station of same segment and community ID and each relay station and take not identical preamble subcarriers set, described in there is the base station of same segment and community ID and relay station in same community.
19. travelling carriages according to claim 12, wherein, in described preamble index table, preamble subcarriers set is divided into a plurality of groups, and each segmentation is assigned with one group.
20. travelling carriages according to claim 12, wherein also comprise:
The 5th acquisition device, obtains the up link MAP message in specific time frequency unit according to the bursty data in obtained downlink data frame.
21. travelling carriages according to claim 20, wherein also comprise:
The 6th acquisition device, obtains positional information and the information relevant with range channel of the uplink burst data in uplink data frames according to obtained up link MAP message.
22. travelling carriages according to claim 12, described travelling carriage is suitable for World Interoperability for Microwave Access, WiMax WiMAX multi-hop relay communication system.
23. 1 kinds for generating the base station of the downlink data frame sending to travelling carriage, and described base station comprises:
Acquisition device, according to the segmentation of oneself, the indication of base station/relay station and community ID, search preamble index table, obtains preamble and preamble subcarriers set:
The first generating apparatus, according to the preamble being obtained by described acquisition device, is modulated to preamble subcarriers set by preamble, generates preamble transmitted signal;
The second generating apparatus, according to base station/relay station, the specific time frequency unit at frame control header FCH information place is determined in indication, frame is controlled to header FCH information and be modulated to described time frequency unit, delta frame is controlled header FCH information transmitted signal;
The 3rd generating apparatus, controls according to frame the downlink map MAP positional information that header FCH information comprises, and down link MAP message is modulated to specific time frequency unit, generates down link MAP message transmitted signal: and
The 4th generating apparatus, the positional information of the downlink burst data that comprise according to down link MAP message, is modulated to downlink burst data in specific time frequency unit, generates downlink burst data transmitted signal.
24. base stations according to claim 23, wherein the FCH information of base station and the FCH information of each relay station are separated from one another and be arranged in order in time frequency unit.
25. base stations according to claim 23, wherein the down link MAP message of base station and the down link MAP information of each relay station are separated from one another in time frequency unit.
26. base stations according to claim 23, wherein the downlink burst data of base station and the downlink burst data of each relay station are separated from one another in time frequency unit.
27. base stations according to claim 23, wherein for each segmentation and community ID couple, a plurality of different preambles are set in described preamble index table, described a plurality of preamble is cross-correlation, caused interference while adopting described preamble for avoiding having the base station of same segment and community ID and relay station, described in there is the base station of same segment and community ID and relay station in same community.
28. base stations according to claim 23, the preamble subcarriers set of each segmentation in wherein said preamble index table is divided into a plurality of groups, and one of a plurality of groups for base station, and all the other groups in a plurality of groups are respectively used to each relay station.
29. base stations according to claim 28, wherein have the base station of same segment and community ID and each relay station and take not identical preamble subcarriers set, described in there is the base station of same segment and community ID and relay station in same community.
30. base stations according to claim 23, wherein, in described preamble index table, preamble subcarriers set is divided into a plurality of groups, and each segmentation is assigned with a group in a plurality of groups.
31. base stations according to claim 23, wherein also comprise:
The 5th generating apparatus, the positional information of the up link MAP message comprising according to down link MAP message, is modulated to up link MAP message in specific time frequency unit, generates up link MAP message transmitted signal.
32. base stations according to claim 23, described base station is suitable for World Interoperability for Microwave Access, WiMax WiMAX multi-hop relay communication system.
33. 1 kinds of generations are to the relay station of the downlink data frame of travelling carriage relaying, and described relay station comprises:
Acquisition device, according to the segmentation of oneself, the indication of base station/relay station, community ID and relay station ID, search preamble index table, obtains preamble and preamble subcarriers set:
The first generating apparatus, according to the preamble being obtained by described acquisition device, is modulated to preamble subcarriers set by preamble, generates preamble transmitted signal;
The second generating apparatus, determines that according to the indication of base station/relay station and relay station ID frame controls the specific time frequency unit at header FCH information place, frame is controlled to header FCH information and be modulated to described time frequency unit, delta frame control header FCH information transmitted signal;
The 3rd generating apparatus, controls according to frame the downlink map MAP positional information that header FCH information comprises, and down link MAP message is modulated to specific time frequency unit, generates down link MAP message transmitted signal: and
The 4th generating apparatus, the positional information of the downlink burst data that comprise according to down link MAP message, is modulated to downlink burst data in specific time frequency unit, generates downlink burst data transmitted signal.
34. relay stations according to claim 33, wherein the FCH information of base station and the FCH information of each relay station are separated from one another and be arranged in order in time frequency unit.
35. relay stations according to claim 33, wherein the down link MAP message of base station and the down link MAP information of each relay station are separated from one another in time frequency unit.
36. relay stations according to claim 33, wherein the downlink burst data of base station and the downlink burst data of each relay station are separated from one another in time frequency unit.
37. relay stations according to claim 33, wherein for each segmentation and community ID couple, a plurality of different preambles are set in described preamble index table, described a plurality of preamble is cross-correlation, caused interference while adopting described preamble for avoiding having the base station of same segment and community ID and relay station, described in there is the base station of same segment and community ID and relay station in same community.
38. relay stations according to claim 33, the preamble subcarriers set of each segmentation in wherein said preamble index table is divided into a plurality of groups, and one of a plurality of groups for base station, and all the other groups in a plurality of groups are respectively used to each relay station.
39. according to the relay station described in claim 38, wherein there is the base station of same segment and community ID and each relay station and take not identical preamble subcarriers set, described in there is the base station of same segment and community ID and relay station in same community.
40. relay stations according to claim 33, wherein, in described preamble index table, preamble subcarriers set is divided into a plurality of groups, and each segmentation is assigned with a group in a plurality of groups.
41. relay stations according to claim 33, wherein also comprise:
The 5th generating apparatus, the positional information of the up link MAP message comprising according to down link MAP message, is modulated to up link MAP message in specific time frequency unit, generates up link MAP message transmitted signal.
42. relay stations according to claim 33, described relay station is suitable for World Interoperability for Microwave Access, WiMax WiMAX multi-hop relay communication system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2008/001820 WO2010048744A1 (en) | 2008-10-30 | 2008-10-30 | Method, mobile station, base station and relay station for receiving data in a downlink data frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102160408A CN102160408A (en) | 2011-08-17 |
| CN102160408B true CN102160408B (en) | 2014-04-02 |
Family
ID=42128176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880131144.3A Active CN102160408B (en) | 2008-10-30 | 2008-10-30 | Method, mobile station, base station and relay station for receiving data in a downlink data frame |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102160408B (en) |
| WO (1) | WO2010048744A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311747B (en) * | 2019-07-16 | 2020-09-01 | 京信通信系统（中国）有限公司 | Anti-large frequency offset frame synchronization method, device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1916782A1 (en) * | 2006-10-26 | 2008-04-30 | Nortel Networks Limited | Frame structure for a multi-hop wireless system |
| CN101174873A (en) * | 2006-10-30 | 2008-05-07 | 华为技术有限公司 | Relay station equipment and communication forwarding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8169925B2 (en) * | 2006-10-25 | 2012-05-01 | Intel Corporation | Mapping of preamble sequence sets with frame control header (FCH) location for multi-hop wireless broadband access communications |
-
2008
- 2008-10-30 CN CN200880131144.3A patent/CN102160408B/en active Active
- 2008-10-30 WO PCT/CN2008/001820 patent/WO2010048744A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1916782A1 (en) * | 2006-10-26 | 2008-04-30 | Nortel Networks Limited | Frame structure for a multi-hop wireless system |
| CN101174873A (en) * | 2006-10-30 | 2008-05-07 | 华为技术有限公司 | Relay station equipment and communication forwarding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102160408A (en) | 2011-08-17 |
| WO2010048744A1 (en) | 2010-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9553654B2 (en) | Methods and systems for wireless networks relays | |
| Wang et al. | A primer on 3GPP narrowband Internet of Things | |
| CN102484843B (en) | Method and device for detecting downlink control information | |
| CN101542942B (en) | Device, system, and method for partitioning and framing communication signals in broadband wireless access networks | |
| KR100856249B1 (en) | Method for detecting initial action mode in a wireless communication system | |
| CN103312650B (en) | Data transmission method, base station and subscriber equipment | |
| JP4745145B2 (en) | Communications system | |
| CN102077504B (en) | Frame structure supporting legacy wireless transmission protocols | |
| KR101923757B1 (en) | Telecommunications method and system | |
| US20080107135A1 (en) | Radio Data Transmission Method Employing Several Different Pilot Patterns, Corresponding Base Station, Mobile, System and Reception Method | |
| US20100040015A1 (en) | Using a synchronization channel to send quick paging signals | |
| CN102215507B (en) | Method and system for detecting downlink control channel | |
| KR20100113435A (en) | Apparatus and method for transmitting system information block in a broadband wireless communication system | |
| CN103748822A (en) | Allocating resources and transmitting data in mobile telecommunication systems comprising machine type communication applications | |
| US8493930B2 (en) | Communication system, base station and mobile station used in the communication system, and base station switching method | |
| CN101345568B (en) | Signal forwarding method and device of transparent relay station | |
| KR100872417B1 (en) | Apparatus and method for supporting relay service in multi-hop relay broad band wireless access communication terminal | |
| CN101933372A (en) | Method for performing ranging in wireless communication system supporting two wireless communication schemes | |
| CN102395204A (en) | Method and system for increasing quantity of physical layer control channel resource in mobile communication | |
| CN102843748A (en) | Method and device for determining search spaces | |
| CN101772148A (en) | Auxiliary synchronizing channel configuring method and device, and subcarrier mapping method and device | |
| CN101662303B (en) | Method for sending lead code, method and terminal for realizing downlink synchronization | |
| JP5391983B2 (en) | Wireless communication system, network station, subscriber station, method and computer program | |
| CN101222264B (en) | At the Apparatus and method for of relay broadband wireless access communication transmission frame information | |
| CN102160408B (en) | Method, mobile station, base station and relay station for receiving data in a downlink data frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Leng Xiaobing Inventor after: Wang Dongyao Inventor after: Liu Jimin Inventor after: Chen Jiming Inventor before: Leng Xiaobing Inventor before: Wang Dongyao Inventor before: Liu Jimin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LENG XIAOBING WANG DONGYAO LIU JIMIN TO: LENG XIAOBING WANG DONGYAO LIU JIMIN CHEN JIMING |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |