CN102484511A - Method and apparatus for determining the inter-cell interference in a wireless relay network - Google Patents
Method and apparatus for determining the inter-cell interference in a wireless relay network Download PDFInfo
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- CN102484511A CN102484511A CN2009801612623A CN200980161262A CN102484511A CN 102484511 A CN102484511 A CN 102484511A CN 2009801612623 A CN2009801612623 A CN 2009801612623A CN 200980161262 A CN200980161262 A CN 200980161262A CN 102484511 A CN102484511 A CN 102484511A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
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Abstract
To solve the problem that in a wireless relay network, the inter-cell interference, which neighbor cells suffers from the switch between a operation state and a silence state of a base station and that of a relay station, can not be determined, a method and an apparatus for determining the inter-cell interference in a wireless relay network are provided by the present invention, wherein the base station(eNB1)of a cell(C1)provides the first information to the base station(eNB2) which a cell(C2)interfered by the cell(C1)belongs to, the first information indicates the communication equipments which each resource block is separately assigned to in the cell(C1); according to the first information, the base station(eNB2)determines the special interference source of each resource block in the cell(C1), and then determines the inter-cell interference that communication equipments suffers from the cell(C1)on each resource block. The present invention solves the problem that the interference can not be determined because the interference sources are indetermination, and can determine the inter-cell interference on the half duplex mode in the wireless relay network.
Description
In wireless relay network
Determine the method and device technical field of inter-cell interference
The present invention relates to wireless communication system, more particularly to wireless relay network.Background technology
Because the band resource issued at present for wireless communication systems such as 3G, 4G is extremely limited, therefore each cell of wireless network is usually using identical frequency resource, this this may result in the emitter of a certain cell and is disseminated to neighbor cell with the transmission signal of certain frequency, to producing inter-cell interference in neighbor cell with the receiver of the frequency reception this cell signal.Therefore, problem of inter-cell interference becomes a major issue that must be solved, and a crucial part for solving this problem is to estimate the SINR (Signal to Interference plus Noise Ratio in a certain subframe in the future）(channel amount is identified for size, such as CQI）, link adaptation, multi-subscriber dispatching, HARQ (hybrid autonomous retransmissions could be carried out according to SINR）Etc. work.
In 3 gpp, certain research has been carried out to this problem, and has proposed certain solution.In LTE (Long Term Evolutions）In standard, the base station A in a certain cell is with constant power（Such as 46dBm) transmitting downstream signal, by taking the signal interference that the user equipment (UE) in another cell is launched by base station A as an example：User equipment（UE) the SINR in a certain subframe of the measurement under the interference effect, and the base station belonging to this user equipment is fed back to because the A power for launching downstream signal in base station is constant, therefore its user equipment to neighbor cell（UE the statistical property of the interference) caused depends primarily on the change of channel fading, so, base station B can just the blunt statistical property according to channel fading, and the SINR of each resource block in a certain subframe of user equipment feedback, the SINR of a certain resource block in another subframe in the future is estimated using the method for Interference Estimation.Especially, for being spaced two subframes being less than in channel coherency time, measured obtained SINR value this identical on a same frequency.
At present, multi-hop relay technology is in LTE-A (advanced Long Term Evolutions）Extensive discussion has been obtained in standard, and has been introduced into 3GPP standards.In multi-hop relay technology, often assume that relay station is in half-duplex（Half-duplex working condition), it is impossible to while being received
Hair.Following behavior example, in a certain cell C1, in a subframe, downlink data is sent to relay station RN 1 by base station eNB 1 in certain working frequency;In another subframe after, the downlink data is sent to user equipment (UE) 1 by relay station RN 1 in identical working frequency.Also, when not using the cooperating relay mode between base station and relay station, in order to avoid interfering, when relay station RN 1 forwards data to UE 1, base station eNB 1 does not generally retransmit data in identical working frequency and is in silent status.The content of the invention
In the case where there is relaying, it is considered to problem of inter-cell interference, the interference source for the interference that some cell is subject to not in the base station of only interfered cell, and may by any one in base station and these potential interference sources of relay station or its combination disturb.Example is transmitted as with descending, as depicted in figs. 1 and 2, in cell C1, a frequency resource is allocated alternately to base station eNB 1 and relay station RN 1.Wherein, as shown in Figure 1, the frequency is assigned to base station eNB 1 in subframe 1 and carries out return link up to relay station RN 1 downlink communication, and the downstream signal produces certain interference to the base station eNB 2 of neighbor cell, relay station RN 2 and user equipment (UE) 2.In subframe 2 after, as shown in Figure 2, the frequency is assigned to the downlink communication that relay station RN 1 carries out access link up to user equipment (UE) 1, and the downstream signal produces certain interference to the base station eNB 2 of neighbor cell, relay station RN 2 and user equipment (UE) 2.
The transmission power of base station and relay station has bigger difference, and the transmission power of such as base station provides it is 46dBm in a standard, and relay station is 30dBm;They also have relatively big difference for the distance of neighbor cell, therefore the interference that they are produced to neighbor cell is also just not quite similar.This causes the interference that neighbor cell is subject to very big uncertainty.Applicant is at full capacity（Full buffer) under business model to non-relay and there is the network operation under the conditions of two kinds of relaying to be emulated（Emulate the wireless network parameter being based on as shown in Figure 4）.Under two conditions, poll is used to 10 users（Round obm) mode carry out the good business of the moon.Fig. 3 shows the coefficient of variation of the respective user SINR of 10 users in 90ms time window（The ratio between SINR standard deviation and SINR averages）.As can be seen that the coefficient of variation under having relay condition is higher, it means that SINR fluctuation is very big when having relaying, even if this causes to accurately measure the SINR for having obtained a certain subframe, it also is difficult to exactly estimate in the future according to the coefficient of variation statistical property
SINR.So, appearing in for relaying generates quite serious interference uncertain problem in neighbor cell, using traditional method of estimation can not estimate exactly it is dry especially and SINR, this directly affects link adaptation, multi-subscriber dispatching, HARQ (hybrid autonomous retransmissions）Deng work, systematic function is reduced.How inter-cell interference is determined under conditions of having relaying, become the major issue that the wireless technologys such as LTE-A need to solve.
In order to solve this problem, according to an aspect of the invention, there is provided a kind of method for being used to determine the inter-cell interference that the communication equipment of this cell is subject in the communication management device of wireless relay network, comprises the following steps：1. receiving a first information, the first information is used to indicate the certain interference source in the interfered cell that at least one particular communication resource is individually allocated in an interfered cell；11. according to the certain interference source, determine the inter-cell interference from the interfered cell that the communication equipment is subject in the particular communication resource.
According to another aspect of the present invention there is provided a kind of method for being used to aid in being determined inter-cell interference by the communication management device of the cell of this area interference in the base station of wireless relay network, comprise the following steps：I., at least one communication resource is respectively allocated to at least part communication equipment in this cell；II. a first information is supplied to by the base station belonging to the cell of this area interference, the first information indicates the communication equipment that at least one described communication resource is individually allocated in this cell.
According to the third aspect of the present invention there is provided a kind of equipment for being used to determine the inter-cell interference that the communication equipment of this cell is subject in the communication management device of wireless relay network, including：Receiver, for receiving a first information, the first information is used to indicate the certain interference source in the interfered cell that at least one particular communication resource is individually allocated in an interfered cell；Determining device, for according to the certain interference source, determining the inter-cell interference from the interfered cell that the communication equipment is subject in the particular communication resource.
According to the fourth aspect of the present invention there is provided a kind of equipment for being used to aid in being determined inter-cell interference by the communication management device of the cell of this area interference in the base station of wireless relay network, including：Resource allocation device, at least part communication equipment being respectively allocated at least one communication resource in this cell；Emitter, for a first information to be supplied to by the base station belonging to the cell of this area interference, the first information indicates at least one described communication money
The communication equipment that source is individually allocated in this cell.
Embodiments in accordance with the present invention, the base station of the cell interfered is informed to the base station for the cell being interfered by the communication equipment that the communication resource is assigned in the cell, the base station for the cell being interfered is able to determine the interference source of the cell interfered on the communication resource, and the inter-cell interference that the cell interfered will be caused is determined according to the interference source, which solve interference uncertain problem.Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the above of the invention and other features, objects and advantages will become more apparent：
Fig. 1 is shown in half-duplex relay wireless network, in subframe 1, and downlink communication causes the schematic diagram of inter-cell interference to neighbor cell；
Fig. 2 is shown in half-duplex relay wireless network, in subframe 2, and downlink communication causes the schematic diagram of inter-cell interference to neighbor cell；
Fig. 3 shows the coefficient of variation for cordless communication network emulate obtained user SINR under the conditions of having relaying and non-relay two kinds；
Fig. 4 shows the parameter for the cordless communication network that the emulation in Fig. 3 is based on；Fig. 5 to Fig. 7 is respectively illustrated in subframe 1,2 and 3, and cell C1 and C1 ' causes the schematic diagram of inter-cell interference to neighbor cell C2；
Fig. 8 is shown according to one aspect of the invention, determines the flow chart of the method for inter-cell interference；
Fig. 9 shown under the method for service of poll, the curve of the normalization user throughput of the present invention and prior art；
Figure 10 shown under the method for service of equitable proportion, the curve of the normalization user throughput of the present invention and prior art.
In accompanying drawing, same or similar accompanying drawing mark represents same or similar part.Embodiment
Referring to Fig. 5 to Fig. 8, with the base station eNB 2 in cell C2 determine subframe 1,
Neighbor cell CI and CI ' cause that embodiments of the invention are described exemplified by inter-cell interference in 2 and 3.
Cell C1 includes base station eNB 1, relay station RN 1 and user equipment (UE) 1.Base station eNB 1 includes the equipment 1 for being used to aid in being determined inter-cell interference by the cell C2 of this area interference base station eNB 2, and the equipment includes a resource allocation device 10 and an emitter 11.Cell Cl, including base station eNB Γ, relay station RN Γ and user equipment (UE) Γ.Base station eNB Γ includes the equipment for being used to aid in the base station eNB 2 by the cell C2 of this area interference to determine inter-cell interference, and the equipment includes a resource allocation device 10, and an emitter 11 '.Cell C2 includes base station eNB 2, relay station RN 2 and user equipment (UE) 2.Base station eNB 2 includes equipment 2, and the equipment includes a receiver 20 and a determining device 21.
As shown in figure 8, first, in step slo, base station eNB 1 and relay station RN 1 in the resource allocation device area of base station eNB 1.The distribution is based on channel quality, long-term business information, base station eNB 1 and relay station RN 1 number of user equipment being respectively connected to etc. factor.
The downlink resource number of blocks that starting stage, base station eNB 1 and relay station RN 1 occupy respectively and the number of user equipment that they are respectively connected to are directly proportional.The distribution is semi-static, and allocation result is allocated again after being kept for a period of time, and the technical scheme will be described in more detail below.
Base station eNB 1 uses distributed downlink resource block that downlink data is transmitted directly into administrative relay station RN 1 and user equipment (UE) for base station eNB 1.According to return link（Between base station eNB 1 and relay station RN 1）And access link（Between relay station RN 1 and user equipment (UE) 1）Link-quality, the downlink resource block that relay station RN 1 occupies will make every effort to match with the resource block number on return link, in the hope of maximum resource utilization rate.
In the present embodiment, it is easy and without loss of generality, it is assumed that the frequency domain width of a unit resource block is whole frequency band, then the resource allocation in units of resource block is just equivalent to the resource allocation in units of subframe.It is appreciated that the present invention is not limited thereto, it is allocated and is similarly in protection scope of the present invention in units of the resource block in subframe, will be described below.
In step slo, subframe 1 is distributed to base station eNB 1 by resource allocation device 10,
For sending downlink data to relay station RN 1 in return link;Subframe 2 is distributed into relay station RN 1, downlink data is sent to user equipment (UE) 1 for access link;And because portfolio is not full, subframe 3 is used it is determined that not distributing.
In cell C1, the allocation result is passed through Un interface notification relay stations RN 1 by base station eNB 1.
In Bu Sudden S11, a first information is passed through inter-base station interface by emitter 11（Such as X2 interface) it is supplied to by the base station eNB 2 belonging to the cell C2 of this area interference, base station eNB 1 and relay station RN 1 that first information instruction subframe 1 and 2 is individually allocated in this cell, also indicate that subframe 3 is not previously allocated in this cell and use.Certainly, the distribution condition of other subframes in scheduling slot is also similarly included in addition to subframe 1,2 and 3, in the first information, other subframes are not described for simplicity here.
For interfered cell Cl, with above step S10 similarly, interfered cell Cl, base station eNB l ' resource allocation device 10' by subframe 1 and 2 distribute to relay station RN Γ access link send downlink data give user equipment (UE) Γ；Subframe 3 is distributed into relay station RN 1 ' upstream data is sent in return link and give base station eNB Γ.The first information ' be sent to base station eNB 2, wherein the first information ' is indicated the communication equipment that subframe 1,2 and 3 is distributed in this cell C1 ' by the base station eNB Γ Γ of emitter 1.
For subframe 1,2 and 3, in cell C2, subframe 1 is assigned to base station eNB 2, for sending downlink data to relay station RN 2 in return link;Subframe 2 and 3 is all assigned to relay station RN 2, and downlink data is sent to user equipment (UE) 2 for access link.For each subframe, base station eNB 2 passes through the first information and the first information, it is determined that the respective interference source from interfered cell C1 and C1 ', and determine the interference that each interference source is caused in subframe to communication equipment respectively, finally calculate the SINR of total interference that communication equipment is subject to or the communication equipment under total interference.
Specifically, for interfered cell Cl, in step S20, the receiver 20 of base station eNB 2 receives the first information, and determine that subframe 1 is assigned to base station eNB 1 in cell C1 and used according to the information, subframe 2 is assigned to relay station RN 1 in cell C1 and used, and subframe 3 is not previously allocated in cell C1 and used.
Base station eNB 2 can set a logical table, indicate subframe 1,2 and 3 small respectively
Whether it is allocated and uses in area CI, and distributes to that what communication equipment is used.Preferably, base station eNB 2 can be that each relay station and user equipment set up the logical table respectively.Certainly, in the case of the interference identical from cell C1 that each relay station and user equipment are subject in same subframe, it is not necessary to be that each relay station and user equipment set up the logical table respectively.
In Bu Sudden S21, determining device 21 is used according to whether each subframe is allocated, and distributes to that what communication equipment is used, and determines the inter-cell interference from cell C1 being subject in this cell using the communication equipment of each subframe.
For subframe 1, determining device 21 is assigned to eNB 1 according to subframe 1 in cell C1, and eNB 1 is estimated the interference caused of relay station RN 2 in subframe 1.
In one embodiment, the control relay station of base station eNB 2 RN 2 measures base station eNB 1 to the jamming power averages produced of RN 2 and statistical property in the subframe before subframe 1.Relay station RN 2 can be measured by signals such as the pilot tones sent of eNB 1.Determining device 21 gets the jamming power average and statistical property that measurement is obtained, and using conventional interference estimation method, estimates power of the base station eNB 1 to the interference caused of relay station RN 2 in subframe 1.It is appreciated that it is well known to one of ordinary skill in the art to carry out Interference Estimation according to the average of jamming power and statistical property, the method such as Wiener filtering can be used, and the present invention will not be described here.
In another embodiment, determining device 21 determines the distance between relay station RN 2 and base station eNB 1, and determines the transmission power of base station eNB 1, such as specified in standard
46dBm.Then, determining device 21 is just blunt according to relative distance and transmission power, by calculating the decay after the transmission of wireless signals distance, calculate base station eNB 1 in subframe 1 to the power of the interference caused of relay station RN 2-.
Then for subframe 1, the minizone from interfered cell C1 that relay station RN 2 is subject in subframe 1 is dry to be determined.For subframe 2, with both examples above similarly, determining device 21 is assigned to RN 1 according to subframe 2 in cell C1, (interference characteristic obtained from the pilot tone for measuring the transmissions of RN 1 according to UE 2, or decay is calculated according to the distance between RN 1 and UE 2 and RN 1 transmission power 30dBm）The interference caused to RN 1 in subframe 2 to user equipment (UE) 2/∞¾/ 2Estimated.For subframe 3,
Determine the interference-free cell C1 in subframe 3 of user equipment (UE) 2 inter-cell interference, i.e., one..
For interfered cell Cl, Yu Bu Sudden S20 similarly, determine that relay station RN 2 is subject in subframe 1 in the Bu Sudden S20' of base station eNB 2 dry outstanding from relay station RN Γ, and determine the interference from relay station RN Γ that user equipment (UE) 2 is subject in subframe 2 and 3 then, Yu Bu Sudden S21 similarly in Bu Sudden S21 ', base station eNB 2 determines that what in subframe 1,2 and 3 communication equipment was subject to comes from cell Cl respectively ,/w — 2With/: —3。
Then, in step S22, in subframe 1,2 and 3, total interference that base station eNB 2 can be subject to inner receiver, and then calculate the SINR of the receiver under total disturbed condition.Specifically, equation below is stated：Bile hides "=- ~ ~S hf:ameJ, z ≡ { 2,3 } (i)
subframej subframe
Wherein, W-, be the receiver of the i-th subframe in the SINR of the i-th subframe, SsubfmmejThe available signal power of i-th subframe, R is noise power.
Then, base station eNB 2 carries out link adaptation respectively according to SINR in each subframe to each subframe, and multi-subscriber dispatching, HARQ (hybrid autonomous retransmissions are carried out according to each subframe）Etc. operation.It is well known to one of ordinary skill in the art according to the SINR methods for carrying out these operations, the present invention not therefore is repeated herein.
In another case, cell C1 is determined synchronously to send downstream signal to user equipment (UE) 1 using collaborative work mode, i.e. relay station RN 1 and base station eNB 1 with identical frequency in subframe 2, and gain is produced after two downstream signal superpositions.In this case, relay station RN 1 and base station eNB 1 are all the certain interference sources of the user equipment (UE) 2 in cell C2.It is similar with the above method, base station eNB 1 is in the first information by the relay station RN 1 of subframe 2 and the signals base eNB 2 of base station eNB 1, base station eNB 2 obtains user equipment (UE) 2 and obtains both respective interference by relay station RN 1 and the transmitting of base station eNB 1 pilot measurement before subframe 2, and pass through interference estimation method, the interference that relay station RN 1 and base station eNB 1 are produced in subframe 2 to user equipment (UE) 2 is estimated respectively, and further with other certain interference sources produce interference together with calculate subframe 2 when user equipment (UE) 2 SINR.
In embodiment more than, cell C2 takes a kind of centralized control mode, and return link and access link are responsible for by base station eNB 2, therefore the RN 2 when calculating subframe 1 of base station eNB 2 SINR, and return link is adapted to；And when calculating subframe 2 and 3 UE 2 SINR, access link is adapted to.In another embodiment, cell C2 is to use distributed control mode, and base station eNB 2 is merely responsible for return link, and not responsible access link, relay station RN 2 is responsible for access link.In this embodiment, RN 2 SINR, is adapted to, the first information is also supplied to relay station RN 2 by it to return link when base station eNB 2 calculates subframe 1.With above step S20 and S21 similarly, relay station RN 2 receives the first information from base station eNB 2, determine cell C1 and C1 ' the respective interference source interfered to UE 2 during subframe 2 and 3, and determine the interference that interference source is produced, UE 2 SINR when calculating subframe 2 and 3, then carrying out adaptation of access link etc., other are operated.In implementing more than, the frequency domain width of the unit resource block in subframe is whole frequency band, therefore with " subframe, illustrated as the unit communication resource.It is appreciated that, when subframe includes multiple resource blocks, resource block is used as the unit communication resource, each resource block is respectively allocated at least part communication equipment in this cell by base station eNB 1 and eNB Γ, and indicates that the first information for the communication equipment that each resource block is individually allocated in this cell is supplied to base station eNB 2.Base station eNB 2 is according to the communication equipment being assigned in the cell C1 and C1 ' on resource block, that is, certain interference source, it is determined that the inter-cell interference from cell C1 and cr being subject on resource block.Over time, cell C1 (or C1 ') portfolio may change, then at regular intervals, base station eNB 1 (or eNB Γ) will re-start distribution to Radio Resource, to be adapted to the change of portfolio, and the result redistributed is informed into cell C2.
Specifically, base station eNB 1 obtains the changes delta of the information content for the communication information that 1 Slow of relay station RN is deposited (such as in units of bit）.And in step s 12, it is just blunt according to variable quantity △ and change threshold, it is determined that increasing, remain unchanged or reduce the resource block quantity for distributing to relay station.
In a preferred embodiment, it is reassigned to relay station RN 1 resource block quantity
X' and relay station RN 1 resource block quantity X functional relation is distributed to before be：< 7
Wherein, and 7 be two positive threshold values, max N m bits _ perRB is most information content that each resource block can be carried（The modulation system for the most high-order for example supported using system）, operator " is that value therein is carried out to round.
Then, in step s 13, base station eNB 2 according to identified relay station increase, remain unchanged or reduction resource block quantity X, by X within next dispatching cycle, individual resource block is reassigned to relay station, and surplus resources block is distributed into this base station.
Then, in step S14, the new first information is supplied to base station eNB 2 belonging to cell C2 by base station eNB 2 for example, by X2 interfaces, and the new first information indicates the communication equipment that each resource block in certain scheduling time is reassigned in cell C1.In systems in practice, the first information can be that each resource block redistributed corresponding communication equipment or distinguishes corresponding communication equipment relative to the part resource block changed after last distribution respectively.
The base station eNB 2 for receiving the new first information will be according to the certain interference source in cell C1 of each new resource block, it is determined that the disturbing from cell C1 that communication equipment is subject on each resource block, and re-starts the operation such as link adaptation.In the completed, base station eNB 2 will feed back a confirmation message time base station eNB 1.
After base station eNB 1 receives the confirmation message, it indicates that the communication equipment in this cell is communicated according to the deallocated resources.
In systems in practice, the first information can be sent to all cells in whole cordless communication network by base station eNB 1, and can also be sent to may produce main interference to it（For example it is adjacent）Cell portion.The cell portion can be screened by the actual interference from cell C1 being subject to of each cell with an interference threshold pre-set.Applicant is emulated to the performance of embodiments of the invention and the performance of prior art
Compare, emulate based on cordless communication network parameter it is as shown in Figure 4.Fig. 9 shown under the method for service of poll, the curve of the normalization user throughput of the present invention and prior art.As can be seen that under conditions of equal probabilities, Normalized throughput of the invention is higher than prior art.Figure 10 shown under the method for service of equitable proportion, the curve of the user throughput of the present invention and prior art.As can be seen that under conditions of equal probabilities, Normalized throughput of the invention is higher than prior art.
Table 1 below shows the cell average user throughput under both the above method of service of prior art and the present invention：
Table 1
Table 2 below shows the community user handling capacity under both the above method of service of prior art and the present invention：
Table 2
As can be seen that under two kinds of methods of service, cell average throughput of the invention and cell edge user throughput are all higher than prior art.It is appreciated that the present invention is not limited to cell C2 in return link and the downlink communication of access link, the uplink communication in access link and return link is applied also for, to determine interference that relay station RN 2 or base station eNB 2 are subject to.Also, present invention is also not necessarily limited to the situation of the double bounce lifted relaying, it goes for three jumps and three and jumps the situation of relaying above.
The specific embodiment of the present invention is described above, it is to be understood that the invention is not limited in above-mentioned specific embodiment, those skilled in the art can make various variants and modifications within the scope of the appended claims.In the claims, word " including " is not excluded for other elements and step, and wording " one " is not excluded for plural number.In the practical application of invention, the function of cited multiple technical characteristics in the possible perform claim requirement of a part.Any reference in claim should not be construed as the limitation to scope.
Claims (16)
- Claims1. a kind of method for being used to determine the inter-cell interference that the communication equipment of this cell is subject in the communication management device of wireless relay network, comprises the following steps：1. receiving a first information, the first information is used to indicate the certain interference source in the interfered cell that at least one particular communication resource is individually allocated in an interfered cell；11. according to the certain interference source, determine the inter-cell interference from the interfered cell that the communication equipment is subject in the particular communication resource.2. according to the method described in claim 1, it is characterised in that the certain interference source is at least one in multiple potential interference sources contained by the interfered cell, the potential interference source is following any：The base station of the interfered cell of-transmission downlink data；Relay station in the interfered cell of-transmission downlink data；Relay station in the interfered cell of the up return data of-transmission；User equipment in the interfered cell of-transmission upstream data.3. method according to claim 2, it is characterised in that the step ii comprises the following steps：- determine that the reference caused on reference to the communication resource to the communication equipment in certain interference source that the communications device measurement is obtained, described is disturbed；- the reference caused according to the certain interference source is disturbed, using interference estimation method, estimate the interference that the certain interference source is caused in the particular communication resource to the communication equipment, the inter-cell interference from the interfered cell being subject to as the communication equipment in the particular communication resource；Or comprise the following steps：- the distance between the communication equipment and the certain interference source are determined, and determine the transmission power in the certain interference source；- according to the relative distance and transmission power, the interference that the certain interference source is caused in the particular communication resource to the communication equipment is calculated, as the communication equipment in institute State the inter-cell interference from the interfered cell being subject in particular communication resource.4. according to the method described in claim 1, it is characterized in that, the communication management device includes base station, the communication equipment includes any one in the administrative relay station in the base station and the base station and user equipment three, in the step i, the base station receives the first information from the base station belonging to the interfered cell.5. method according to claim 4, it is characterised in that the base station linchpin has relay station, the relay station is used for the inter-cell interference for determining that the relay station or the administrative user equipment of the relay station are subject to, and this method also comprises the following steps：- first information is transmitted to the relay station.6. according to the method described in claim 1, it is characterized in that, the communication management device includes relay station, the communication equipment includes any one in both relay station and the administrative user equipment of the relay station, in the Bu Sudden i, the relay station receives the first information from the base station forwarding belonging to the relay station, and the first information is received by the base station belonging to the base station belonging to the relay station from the interfered cell.7. method according to any one of claim 1 to 6, it is characterized in that, the wireless relay network is to be based on 3GPP standards, and the first information is additionally operable to indicate that the particular communication resource is not previously allocated in the interfered cell to use, in the step ii：- be not previously allocated and use in the interfered cell according to the particular communication resource, determine the communication equipment in the particular communication resource not by the inter-cell interference of the interfered cell.8. method according to any one of claim 1 to 7, characterized in that, the communication equipment is disturbed by multiple certain interference sources from multiple interfered cells, for each interference source, the Bu Sudden 1 and 11 are carried out respectively, and this method also comprises the following steps：- 111. come from the respective inter-cell interference in the multiple interfered cell according to what the communication equipment was subject in the particular communication resource, calculate total inter-cell interference or Signal to Interference plus Noise Ratio that the communication equipment is subject in the particular communication resource.9. a kind of method for being used to aid in being determined inter-cell interference by the communication management device of the cell of this area interference in base station Wu line Zhong Ji Wang Network, comprises the following steps：At least part communication that at least one communication resource is respectively allocated in this cell by I is set It is standby；II. a first information is supplied to by the base station belonging to the cell of this area interference, the first information indicates the communication equipment that at least one described communication resource is individually allocated in this cell.10. method according to claim 9, it is characterised in that the communication equipment include it is following at least any one：This base station of-transmission downlink data；The relay station of-transmission downlink data；The user equipment of-transmission upstream data；The relay station of the up return data of-transmission.11. method according to claim 9, it is characterised in that in the step I, the quantity for the user equipment being directly accessed according to this base station and the relay station, this base station and the relay station are proportionately distributed to by least one communication resource；This method also Bao includes Ru Xia Bu Sudden：J. the change according to the information content of the relay station institute Slow communication informations deposited in a certain time interval, and the threshold value changed, it is determined that increasing, remain unchanged or reduce the amount of communications resources for distributing to the relay station；K. according to the identified relay station increase, remain unchanged or reduction amount of communications resources, at least one communication resource is reassigned to this base station and the relay station；L. the new first information is supplied to by the base station belonging to the cell of inter-cell interference, the new first information indicates the communication equipment that at least one communication resource is reassigned in this cell；M. above step J to L is repeated at a time interval.12. method according to claim 11, it is characterised in that in the step J：- when increased amount is more than a first threshold to described information amount in a certain time interval, it is determined that under conditions of the maximum carrying information amount of each communication resource, the amount of communications resources needed for the increased amount is sent, and determines that the amount of communications resources for distributing to affiliated relay station increases the required amount of communications resources；- when described information amount in a certain time interval reduction amount be more than a Second Threshold when, It is determined that halving the amount of communications resources for distributing to the relay station；- otherwise, the amount of communications resources for the relay station belonging to distributing to that remains unchanged.13. the method according to any one of claim 9 to 12, the wireless relay network is to be based on 3GPP standards, the Bu Sudden I also Bao include Ru Xia Bu Sudden：- determination, which is not distributed, uses some communication resources；The first information is additionally operable to indicate that some communication resources are not previously allocated in this cell and used.14. a kind of equipment for being used to determine the inter-cell interference that the communication equipment of this cell is subject in the communication management device of wireless relay network, including：- receiver, for receiving a first information, the first information is used to indicate the certain interference source in the interfered cell that at least one particular communication resource is individually allocated in an interfered cell；- determining device, for according to the certain interference source, determining the inter-cell interference from the interfered cell that the communication equipment is subject in the particular communication resource.15. a kind of equipment for being used to aid in being determined inter-cell interference by the communication management device of the cell of this area interference in the base station of wireless relay network, including：- resource allocation device, at least part communication equipment being respectively allocated at least one communication resource in this cell；- emitter, for a first information to be supplied to by the base station belonging to the cell of this area interference, the first information indicates the communication equipment that at least one described communication resource is individually allocated in this cell.
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| PCT/CN2009/074360 WO2011038556A1 (en) | 2009-10-04 | 2009-10-04 | Method and apparatus for determining the inter-cell interference in a wireless relay network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769513A (en) * | 2018-07-27 | 2020-02-07 | 成都鼎桥通信技术有限公司 | Multi-hop relay resource allocation method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104041157A (en) * | 2012-12-31 | 2014-09-10 | 华为技术有限公司 | Base station and method for coordinating interference of relay backhaul resource |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826761A (en) * | 2003-05-15 | 2006-08-30 | 艾利森电话股份有限公司 | Interference cancellation in wireless relaying networks |
| CN101420716A (en) * | 2007-10-23 | 2009-04-29 | 华为技术有限公司 | Method, system and device for uplink interference source detection |
| CN101494476A (en) * | 2008-01-24 | 2009-07-29 | 中兴通讯股份有限公司 | Method and system for scheduling resource block |
| CN101494481A (en) * | 2008-01-25 | 2009-07-29 | 中兴通讯股份有限公司 | Method for coordinating interference in relay network district |
| US20090227249A1 (en) * | 2008-03-10 | 2009-09-10 | Elektrobit Wireless Communications Oy | Adaptive transmission method and a base station using the method |
-
2009
- 2009-10-04 CN CN2009801612623A patent/CN102484511A/en active Pending
- 2009-10-04 WO PCT/CN2009/074360 patent/WO2011038556A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826761A (en) * | 2003-05-15 | 2006-08-30 | 艾利森电话股份有限公司 | Interference cancellation in wireless relaying networks |
| CN101420716A (en) * | 2007-10-23 | 2009-04-29 | 华为技术有限公司 | Method, system and device for uplink interference source detection |
| CN101494476A (en) * | 2008-01-24 | 2009-07-29 | 中兴通讯股份有限公司 | Method and system for scheduling resource block |
| CN101494481A (en) * | 2008-01-25 | 2009-07-29 | 中兴通讯股份有限公司 | Method for coordinating interference in relay network district |
| US20090227249A1 (en) * | 2008-03-10 | 2009-09-10 | Elektrobit Wireless Communications Oy | Adaptive transmission method and a base station using the method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769513A (en) * | 2018-07-27 | 2020-02-07 | 成都鼎桥通信技术有限公司 | Multi-hop relay resource allocation method and device |
| CN110769513B (en) * | 2018-07-27 | 2023-08-04 | 成都鼎桥通信技术有限公司 | Multi-hop relay resource allocation method and device |
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