CN101877883A - Method and system for realizing relay node cooperation - Google Patents
Method and system for realizing relay node cooperation Download PDFInfo
- Publication number
- CN101877883A CN101877883A CN200910083290XA CN200910083290A CN101877883A CN 101877883 A CN101877883 A CN 101877883A CN 200910083290X A CN200910083290X A CN 200910083290XA CN 200910083290 A CN200910083290 A CN 200910083290A CN 101877883 A CN101877883 A CN 101877883A
- Authority
- CN
- China
- Prior art keywords
- via node
- base station
- information
- control information
- cooperation
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
- H04W36/385—Reselection control by fixed network equipment of the core network
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and a system for realizing relay node cooperation. The method comprises that: a base station selects a cooperation mode according to a preset cooperation condition, and when the cooperation condition indicates that the base station and a relay node are point-to-point, the base station and the relay node cooperate in a special information mode; and when the cooperation condition indicates that the base station and the relay node are point-to-multipoint, the base station and the relay node cooperate in a common information mode. The scheme of the invention ensures backward compatibility (compatible with users in older version), simply and accurately ensures the backward compatibility with the users, reduces the link overhead from the base station to a relay station, and improves the throughput of the whole system.
Description
Technical field
The present invention relates to cooperation technology, refer to a kind of method and system that realize the via node cooperation especially.
Background technology
The goal in research of B3G/4G is to compile connecting systems such as honeycomb, fixed wireless access, nomadic, radio area network, in conjunction with complete IP network, being respectively the user under high speed and low speed mobile environment provides peak rate to reach the wireless transmission capability of 100Mbps and 1Gbps, and realize the seamless connection of cellular system, regional wireless network, broadcasting, telstar communication, make human realize " anyone realizes communicating by letter of any way with all other men at any time and any place ".In order to cooperate seamless connection, relaying (Relay) technology is a kind of effective measures, and the covering that the Relay technology both can increase the sub-district also can increase cell capacity.But, after introducing the Relay technology, can cause the more problem such as the utilization of resources etc.
Cooperation technology be in the multihop system a kind of macroscopic view or the distributed MIMO system, cooperation technology can be applied in the up-downgoing access link.Cooperation technology is similar to the grand diversity between the adjacent evolution base station eNB, is to utilize cooperation between eNB and each RN to launch in the sub-district to realize.Send relevant signal by the transmitting antenna that utilizes different e NB and RN, to realize collaboration diversity.By cooperation technology, the space diversity effect can provide the better link error rate/Block Error Rate (BER/BLER) performance, and spatial reuse can be system and brings higher spectrum efficiency simultaneously.Can be regarded as multipoint cooperative in the eNB for the resource collaboration in the eNB that introduces the RN node.
At present, for eNB and the existing more research of RN, but the research for the resource collaboration between eNB and a plurality of RN, between a plurality of RN is less, when especially in OFDM (Orthogonal Frequency DivisionMultiplexing) system, having RN, solution is not proposed in the realization of cooperating between cooperation or a plurality of RN between eNB and a plurality of RN.
Present system such as senior long evolving system (LTE-A, Long Term EvolutionAdvanced) UEs (as R8UEs, R9UEs, R10UEs) that has different editions in, wherein, in order to take into full account the backwards compatibility of R8UEs, when between eNB and RN, cooperating, RN must launch the pilot tone same with eNB, is used for R8UEs and measures a comprehensive channel quality, and be used for next service dispatching for eNB and RN the channel-quality feedback that measures.If RN does not launch the pilot tone same with eNB, just can not guarantee RN to correctly the obtaining of the link-quality of R8UEs, thereby improve link BER/BLER.
In addition, RN only launches the business information of self subordinate's UEs, has reduced the bandwidth availability ratio of RN, and has increased the expense of eNB to the RN link, has reduced the throughput of whole system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes the via node cooperation, can guarantee user's backwards compatibility simply, exactly, reduces the link overhead of base station to relay station, improves the throughput of whole system.
Another object of the present invention is to provide a kind of system that realizes the via node cooperation, can guarantee user's backwards compatibility simply, exactly, reduce the link overhead of base station, improve the throughput of whole system to relay station.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes the via node cooperation, this method comprises:
Cooperation mode is selected according to the cooperation condition that sets in advance in the base station, when the cooperation condition shows between base station and via node when point-to-point, adopts peculiar information mode to cooperate between base station and the via node;
When the cooperation condition shows between base station and via node for point-to-multipoint, adopt the public information mode to cooperate between base station and the via node.
Described cooperation condition is: whether user terminal can correctly obtain the base station to user link, and via node is to the channel quality of user link;
The method of described selection cooperation mode is: if user terminal can correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows between base station and via node for point-to-point;
If user terminal can not correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows and is point-to-multipoint between base station and via node.
Described cooperation condition is: whether user terminal is only in base station and certain via node coverage;
The method of described selection cooperation mode is: if user terminal only in described base station and certain via node coverage, then described cooperation condition shows between base station and via node for point-to-point;
If user terminal is in described base station and a plurality of via node coverage, when perhaps user terminal was only in described a plurality of via node coverages, described cooperation condition showed between base station and via node to be point-to-multipoint.
Adopting peculiar information mode to cooperate between described base station and the via node specifically comprises:
Launch after the business information of each via node is adopted absolute coding described base station, and the base station identifies the control information and the emission of each via node with the sign RN-ID of different via nodes, and each via node is only transmitted the data to be cooperated that belong to self.
The method of described absolute coding is: chnnel coding, CRC check, constellation modulation, mapping processing are carried out to the business information of each via node respectively in described base station;
Described control information comprises at least: the resource allocation information, the modulation system that show the affiliated Resource Block of business information;
The method that described via node is only transmitted the data to be cooperated that belong to self comprises:
Described via node utilizes the RN-ID blind Detecting to belong to the control information of self, obtains business information to be cooperated according to the resource allocation information in the described control information, and according to the modulation system in the control information business information is carried out demodulation;
Emission after encoding respectively to the business information of each via node in described base station, identify the control information and the emission of each user terminal simultaneously respectively with the ID of different user terminals, each via node carries out launching behind the coding identical with the base station to the business information that belongs to self;
Described user terminal utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
Adopting the public information mode to cooperate between described base station and the via node specifically comprises:
Launch behind the business information employing combined coding of described base station to each via node, the base station identifies the control information of each via node and launches the data that each via node forwarding remains to be cooperated with the sign RC-ID of identical via node.
The method of described combined coding is: chnnel coding, CRC check, constellation modulation, resource allocation, mapping processing are carried out together with the business information of each via node in described base station;
Described control information comprises at least: the resource allocation information, the modulation system that show the affiliated Resource Block of business information;
The method of the data that described via node forwarding remains to be cooperated comprises:
Described via node utilizes the control information of RC-ID blind Detecting, obtains business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information is carried out demodulation;
Emission after encoding respectively to the business information of each via node in described base station, identify the control information and the emission of each user terminal simultaneously respectively with the ID of different user terminals, each via node carries out respectively launching behind the coding identical with the base station to the business information of each via node;
Described user terminal utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
Described via node is two or more, when described user terminal is only in a plurality of via node coverages, adopts the public information mode to cooperate between the described via node;
The method of the data that described via node forwarding remains to be cooperated comprises:
Described via node utilizes the control information of RC-ID blind Detecting, obtains business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information is carried out demodulation;
Each via node carries out respectively launching behind the identical coding to the business information of each via node, identifies the control information and the emission of each user terminal simultaneously respectively with the ID of different user terminals;
Described user terminal utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
Described different relay station does not limit sequencing to the blind Detecting of control information.
A kind of system that realizes the via node cooperation, this system comprises the base station, via node, wherein,
The base station is used for selecting cooperation mode according to the cooperation condition that sets in advance, sends peculiar information mode notice to via node when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, send the public information mode to via node and notify;
Via node is used for according to from the notice of base station, when receiving peculiar information mode notice, adopts peculiar information mode to cooperate between base station and the via node; When receiving the public information mode when notifying, adopt the public information mode to cooperate between base station and the via node.
When described via node was two or more, described via node was receiving the public information mode when notifying, and adopted the public information mode to cooperate between each via node.
Described base station comprises cooperation condition setting unit, selected cell and transmitting element, wherein,
Cooperation condition setting unit is used to be provided with the cooperation condition;
Selected cell is used for selecting cooperation mode according to the cooperation condition that sets in advance, sends peculiar information mode notice to via node when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, send the public information mode to via node and notify;
Transmitting element is used for sending business information and control information according to the selection result of selected cell to via node.
When the cooperation condition of described cooperation condition setting unit setting is: whether user terminal can correctly obtain the base station to user link, and via node is during to the channel quality of user link;
Described selected cell is used for, if user terminal can correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows between base station and via node and to send peculiar information mode notice for point-to-point to via node;
If user terminal can not correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows and is point-to-multipoint between base station and via node, sends the public information mode to via node and notifies.
When the cooperation condition of described cooperation condition setting unit setting is: whether user terminal is only in base station and certain via node coverage;
Described selected cell is used for, if user terminal only in described base station and certain via node coverage, then described cooperation condition shows between base station and via node and to send peculiar information mode notice for point-to-point to via node;
If user terminal is in described base station and a plurality of via node coverage, when perhaps user terminal is only in described a plurality of via node coverages, described cooperation condition shows between base station and via node to be point-to-multipoint, sends the public information mode to via node and notifies.
When adopting peculiar information mode to cooperate between described base station and the via node,
Described transmitting element is used for launching behind the business information employing absolute coding to each via node, identifies the control information and the emission of each via node with the sign RN-ID of different via nodes.
When adopting the public information mode to cooperate between described base station and the via node,
Described transmitting element is used for launching behind the business information employing combined coding to each via node, identifies the control information and the emission of each via node with the sign RC-ID of identical via node.
Described via node comprises the first collaborative process unit and the second collaborative process unit;
When adopting peculiar information mode to cooperate between described base station and the via node, the described first collaborative process unit is used for only transmitting the data to be cooperated that belong to self;
When adopting the public information mode to cooperate between described base station and the via node, the described second collaborative process unit is used to transmit the data that remain to be cooperated.
The described first collaborative process unit specifically is used for, utilize the RN-ID blind Detecting to belong to the control information of self, obtain business information to be cooperated according to the resource allocation information in the described control information, and business information is carried out demodulation according to the modulation system in the control information.
The described second collaborative process unit specifically is used for, and utilizes the control information of RC-ID blind Detecting, obtains business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information is carried out demodulation.
The technical scheme that provides from the invention described above as can be seen, cooperation mode is selected according to the cooperation condition that sets in advance in the base station, when the cooperation condition shows between base station and via node when point-to-point, adopts peculiar information mode to cooperate between base station and the via node; When the cooperation condition shows between base station and via node for point-to-multipoint, adopt the public information mode to cooperate between base station and the via node.Guaranteed backwards compatibility (user of compatible legacy version) by the inventive method, and, guaranteed user's backwards compatibility simply, exactly, reduced the link overhead of base station to relay station, improved the throughput of whole system.
Description of drawings
Fig. 1 realizes the flow chart of the method for via node cooperation for the present invention;
Fig. 2 realizes the composition structural representation of the system of via node cooperation for the present invention;
Fig. 3 is the schematic diagram of cooperating with peculiar message form between eNB and the RN in the embodiment of the invention one;
Fig. 4 is the schematic diagram of cooperating with the public information form between eNB and the RN in the embodiment of the invention two;
Fig. 5 is the schematic diagram of cooperating in conjunction with peculiar message form and public information form between eNB and the RN in the embodiment of the invention three.
Embodiment
Fig. 1 realizes the flow chart of the method for via node cooperation being applicable to the cooperation between base station and one or more via nodes, between two or more via nodes that for the present invention as shown in Figure 1, the inventive method may further comprise the steps:
Step 100: cooperation mode is selected according to the cooperation condition that sets in advance in the base station, enters step 101 when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, enter step 102.
In this step, the cooperation condition is: whether user terminal can correctly obtain the base station to user link, and via node is to the channel quality of user link, if can, the cooperation condition shows between base station and via node for point-to-point; If can not, the cooperation condition shows between base station and via node to be point-to-multipoint.
The cooperation condition can also for: user terminal whether only in base station and certain via node coverage, if the cooperation condition shows between base station and via node for point-to-point; Otherwise user terminal is in base station and a plurality of via node coverage or user terminal only in a plurality of via node coverages the time, and the cooperation condition shows and is point-to-multipoint between base station and via node.
Need to prove, whether can correctly obtain the base station to user link for user terminal, and via node is to the channel quality of user link, the base station is to obtain according to the result who carries out capability negotiation with the base station in user terminal registration, its specific implementation belongs to those skilled in the art's conventional techniques means, repeats no more here.Whether only in base station and certain via node coverage, the base station can realize that specific implementation belongs to those skilled in the art's conventional techniques means by the position of adopting methods such as existing location to obtain user terminal, repeats no more here for user terminal.
Step 101: adopt peculiar information mode to cooperate between base station and the via node.
This step specific implementation comprises: launch behind the business information employing absolute coding of base station to each via node, the base station is with the ID (RN-ID of different via nodes, Relay Node-ID) control information that identifies each via node is also launched, each via node is only transmitted the data to be cooperated that belong to self, promptly adopts the clean culture form of point-to-point.
Wherein, the method for absolute coding is: the base station is carried out processing such as chnnel coding, CRC check, constellation modulation, mapping respectively to the business information of each via node.
Control information comprises the resource allocation information that shows Resource Block under the business information, modulation system etc.
The method that via node is only transmitted the data to be cooperated that belong to self comprises: at first, via node utilizes the RN-ID blind Detecting to belong to the control information of self, obtain business information to be cooperated according to the resource allocation information in the control information, and business information is carried out demodulation according to the modulation system in the control information; Then, launch after the business information of each via node is encoded respectively the base station, identifies control information and the emission of each UE simultaneously respectively with the ID of different UE, and each via node carries out launching behind the coding identical with the base station to the business information that belongs to self; At last, each UE utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtains self business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information of self is carried out demodulation.
Step 102: adopt the public information mode to cooperate between base station and the via node.
This step specific implementation comprises: launch behind the business information employing combined coding of base station to each via node, the base station is with the ID (RC-ID of identical via node, Relay Cooperation-ID, also claim the cooperation sign) identify the control information and the emission of each via node, the data that each via node forwarding remains to be cooperated promptly adopt the forms of broadcasting of point to multiple spot.
Wherein, the method for combined coding is: processing such as chnnel coding, CRC check, constellation modulation, resource allocation, mapping are carried out together with the business information of each via node in the base station.
Control information comprises the resource allocation information that shows Resource Block under the business information, modulation system etc.
Further, when via node comprises two or more, if user terminal only in a plurality of via node coverages, adopts the public information mode to cooperate between via node.
The method of the data that the via node forwarding remains to be cooperated comprises: at first, via node utilizes the control information of RC-ID blind Detecting, obtain business information to be cooperated according to the resource allocation information in the control information, and business information is carried out demodulation according to the modulation system in the control information.Wherein, different relay stations do not limit sequencing to the blind Detecting of control information; Then, launch after the business information of each via node is encoded respectively the base station, identifies control information and the emission of each UE simultaneously respectively with the ID of different UE, and each via node carries out respectively launching behind the coding identical with the base station to the business information of each via node; At last, each UE utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtains self business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information of self is carried out demodulation.
When via node comprises two or more, if user terminal is only in a plurality of via node coverages, when between via node, adopting the public information mode to cooperate, the method of the data that the via node forwarding remains to be cooperated comprises: at first, via node utilizes the control information of RC-ID blind Detecting, obtain business information to be cooperated according to the resource allocation information in the control information, and business information is carried out demodulation according to the modulation system in the control information.Wherein, different relay stations do not limit sequencing to the blind Detecting of control information; Then, each via node carries out respectively launching behind the identical coding to the business information of each via node, identifies control information and the emission of each UE simultaneously respectively with the ID of different UE; At last, each UE utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtains self business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information of self is carried out demodulation.
Need to prove, the realization of the reception of business information is belonged to those skilled in the art's conventional techniques means for the UE side.
Corresponding method of the present invention also provides a kind of system that realizes the via node cooperation, is applicable to the cooperation between base station and one or more via nodes, between two or more via nodes.Fig. 2 realizes the composition structural representation of the system of via node cooperation for the present invention, and as shown in Figure 2, this system comprises base station and via node, wherein,
The base station is used for selecting cooperation mode according to the cooperation condition that sets in advance, sends peculiar information mode notice to via node when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, send the public information mode to via node and notify.
Via node is used for according to from the notice of base station, when receiving peculiar information mode notice, adopts peculiar information mode to cooperate between base station and the via node; When receiving the public information mode when notifying, adopt the public information mode to cooperate between base station and the via node.
When described via node comprised two or more, further, via node was receiving the public information mode when notifying, and adopts the public information mode to cooperate between the via node.
Described base station comprises cooperation condition setting unit, selected cell and transmitting element, wherein,
Cooperation condition setting unit is used to be provided with the cooperation condition;
Selected cell is used for selecting cooperation mode according to the cooperation condition that sets in advance, sends peculiar information mode notice to via node when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, send the public information mode to via node and notify;
Transmitting element is used for sending business information and control information according to the selection result of selected cell to via node.
When the cooperation condition of described cooperation condition setting unit setting is: whether user terminal can correctly obtain the base station to user link, and via node is during to the channel quality of user link;
Described selected cell is used for, if user terminal can correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows between base station and via node and to send peculiar information mode notice for point-to-point to via node;
If user terminal can not correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows and is point-to-multipoint between base station and via node, sends the public information mode to via node and notifies.
When the cooperation condition of described cooperation condition setting unit setting is: whether user terminal is only in base station and certain via node coverage;
Described selected cell is used for, if user terminal only in described base station and certain via node coverage, then described cooperation condition shows between base station and via node and to send peculiar information mode notice for point-to-point to via node;
If user terminal is in described base station and a plurality of via node coverage, when perhaps user terminal is only in described a plurality of via node coverages, described cooperation condition shows between base station and via node to be point-to-multipoint, sends the public information mode to via node and notifies.
When adopting peculiar information mode to cooperate between described base station and the via node,
Described transmitting element is used for launching behind the business information employing absolute coding to each via node, identifies the control information and the emission of each via node with the sign RN-ID of different via nodes.
When adopting the public information mode to cooperate between described base station and the via node,
Described transmitting element is used for launching behind the business information employing combined coding to each via node, identifies the control information and the emission of each via node with the sign RC-ID of identical via node.
Described via node comprises the first collaborative process unit and the second collaborative process unit;
When adopting peculiar information mode to cooperate between described base station and the via node, the described first collaborative process unit is used for only transmitting the data to be cooperated that belong to self; The described first collaborative process unit specifically is used for, utilize the RN-ID blind Detecting to belong to the control information of self, obtain business information to be cooperated according to the resource allocation information in the described control information, and business information is carried out demodulation according to the modulation system in the control information.
When adopting the public information mode to cooperate between described base station and the via node, the described second collaborative process unit is used to transmit the data that remain to be cooperated.The described second collaborative process unit specifically is used for, and utilizes the control information of RC-ID blind Detecting, obtains business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information is carried out demodulation.
Below in conjunction with several embodiment the inventive method is described in detail.Describe conveniently for example, suppose to have 4 RN in the eNB system, be expressed as RN1, RN2, RN3, RN4 respectively; Each RN covers 1 UE, and eNB can cover this 4 UE, is expressed as UE1, UE2, UE3, UE4 respectively, and 4 user terminal corresponding service information are expressed as data1, data2, data3, data4 respectively; Suppose that in some subframes these 4 UE have service needed to adopt cooperation mode to send, and the setting channel quality thresholds is Th in the system.
Fig. 3 is the schematic diagram of cooperating with peculiar message form between eNB and the RN in the embodiment of the invention one, suppose that UE1 (UE2) measures eNB to UE1 (UE2), and RN1～RN4 is to the channel quality of UE1 (UE2), and obtain after will giving eNB and RN above the channel-quality feedback of thresholding Th, the RN number that channel quality surpasses thresholding Th is one, suppose that corresponding UE 1 is RN1, corresponding UE 2 is RN2, and when needing to adopt cooperation mode to launch between eNB and RN, between eNB and the RN1, and cooperate with peculiar message form between eNB and the RN2.
At first, shown in the left-hand component of straight dashed line among Fig. 3, eNB carries out respectively launching after chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. are handled to data1 and data2, identifies control information and the emission of RN1 and RN2 simultaneously respectively with RN1-ID and RN2-ID.RN1 and RN2 utilize RN1-ID, RN2-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
Then, shown in the right-hand component of straight dashed line among Fig. 3, eNB carries out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN1 to data1 and handles the back emission; ENB carries out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN2 to data2 and handles the back emission; Identify control information and the emission of UE1 and UE2 simultaneously respectively with UE1-ID and UE2-ID.UE1 and UE2 utilize UE1-ID, UE2-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
The realization of present embodiment one has guaranteed user's backwards compatibility (user of compatible legacy version) simply, exactly, and adopts peculiar message form to cooperate, and has reduced the error rate or the Block Error Rate of user side, has improved the throughput of whole system.
Fig. 4 is the schematic diagram of cooperating with the public information form between eNB and the RN in the embodiment of the invention two, suppose that UE1 (UE2) can't measure eNB to UE1 (UE2), and RN1～RN4 is to the channel quality of UE1 (UE2), and when needing to adopt cooperation mode to launch between eNB and RN, between eNB and the RN1, and cooperate with the public information form between eNB and the RN2.
At first, shown in the left-hand component of straight dashed line among Fig. 4, eNB carries out data1 and data2 to launch after chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. are handled together, and the while identifies the control information of RN1 and RN2 with RC-ID and launches.RN1 and RN2 utilize the RC-ID blind Detecting to belong to the control information of public cooperation respectively, obtain business information to be cooperated according to the resource allocation information in the control information, and carry out demodulation according to the business information that the modulation system in the control information is treated cooperation.
Then, shown in the right-hand component of straight dashed line among Fig. 4, eNB, RN1 carry out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN2 to data1 and handle the back emission; ENB, RN1 carry out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN2 to data2 and handle the back emission; Identify control information and the emission of UE1 and UE2 simultaneously respectively with UE1-ID and UE2-ID.UE1 and UE2 utilize UE1-ID, UE2-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
This example has guaranteed backwards compatibility (user of compatible legacy version), and adopts the public information form to cooperate, and has saved the expense of base station to the via node link, has reduced the error rate or the Block Error Rate of user side, has improved the throughput of whole system.
Fig. 5 is the schematic diagram of cooperating in conjunction with peculiar message form and public information form between eNB and the RN in the embodiment of the invention three, suppose to obtain by the location, UE1 (UE2) is only in the coverage of eNB and RN1 (RN2), and need to adopt cooperation mode to launch, so, between eNB and the RN1, and cooperate with peculiar message form between eNB and the RN2; Suppose that UE3 and UE4 only distinguish in the coverage of RN3 and RN4, and need to adopt cooperation mode to launch, so, between eNB and the RN3, and cooperate with the public information form between eNB and the RN4.
At first, shown in the left-hand component of straight dashed line among Fig. 5, eNB carries out respectively launching after chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. are handled to data1 and data2, identifies control information and the emission of RN1 and RN2 simultaneously respectively with RN1-ID and RN2-ID; ENB carries out data3 and data4 to launch after chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. are handled together, and the while identifies the control information of RN1 and RN2 with RC-ID and launches.RN1 and RN2 utilize RN1-ID, RN2-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information; RN3 and RN4 utilize the RC-ID blind Detecting to belong to the control information of public cooperation respectively, obtain business information to be cooperated according to the resource allocation information in the control information, and carry out demodulation according to the business information that the modulation system in the control information is treated cooperation.
Then, shown in the right-hand component of straight dashed line among Fig. 5, eNB carries out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN1 to data1 and handles the back emission; ENB carries out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN2 to data2 and handles the back emission; Identify control information and the emission of UE1 and UE2 simultaneously respectively with UE1-ID and UE2-ID.RN3 carries out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN4 to data3 and handles the back emission; RN3 carries out identical chnnel coding, CRC check, constellation modulation, resource allocation, mapping etc. with RN4 to data4 and handles the back emission; Identify control information and the emission of UE3 and UE4 simultaneously respectively with UE3-ID and UE4-ID.UE1, UE2, UE3 and UE4 utilize UE1-ID, UE2-ID, UE3-ID and UE4-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
Present embodiment three has guaranteed backwards compatibility (user of compatible legacy version), and, adopt peculiar message form to cooperate, reduced the error rate or the Block Error Rate of user side, improved the throughput of whole system; Adopt the public information form to cooperate, saved the expense of base station, reduced the error rate or the Block Error Rate of user side, improved the throughput of whole system to the via node link.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. method that realizes via node cooperation is characterized in that this method comprises:
Cooperation mode is selected according to the cooperation condition that sets in advance in the base station, when the cooperation condition shows between base station and via node when point-to-point, adopts peculiar information mode to cooperate between base station and the via node;
When the cooperation condition shows between base station and via node for point-to-multipoint, adopt the public information mode to cooperate between base station and the via node.
2. method according to claim 1 is characterized in that, described cooperation condition is: whether user terminal can correctly obtain the base station to user link, and via node is to the channel quality of user link;
The method of described selection cooperation mode is: if user terminal can correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows between base station and via node for point-to-point;
If user terminal can not correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows and is point-to-multipoint between base station and via node.
3. method according to claim 1 is characterized in that, described cooperation condition is: whether user terminal is only in base station and certain via node coverage;
The method of described selection cooperation mode is: if user terminal only in described base station and certain via node coverage, then described cooperation condition shows between base station and via node for point-to-point;
If user terminal is in described base station and a plurality of via node coverage, when perhaps user terminal was only in described a plurality of via node coverages, described cooperation condition showed between base station and via node to be point-to-multipoint.
4. according to claim 2 or 3 described methods, it is characterized in that, adopt peculiar information mode to cooperate between described base station and the via node and specifically comprise:
Launch after the business information of each via node is adopted absolute coding described base station, and the base station identifies the control information and the emission of each via node with the sign RN-ID of different via nodes, and each via node is only transmitted the data to be cooperated that belong to self.
5. method according to claim 4 is characterized in that, the method for described absolute coding is: chnnel coding, CRC check, constellation modulation, mapping processing are carried out to the business information of each via node respectively in described base station;
Described control information comprises at least: the resource allocation information, the modulation system that show the affiliated Resource Block of business information;
The method that described via node is only transmitted the data to be cooperated that belong to self comprises:
Described via node utilizes the RN-ID blind Detecting to belong to the control information of self, obtains business information to be cooperated according to the resource allocation information in the described control information, and according to the modulation system in the control information business information is carried out demodulation;
Emission after encoding respectively to the business information of each via node in described base station, identify the control information and the emission of each user terminal simultaneously respectively with the ID of different user terminals, each via node carries out launching behind the coding identical with the base station to the business information that belongs to self;
Described user terminal utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
6. according to claim 2 or 3 described methods, it is characterized in that, adopt the public information mode to cooperate between described base station and the via node and specifically comprise:
Launch behind the business information employing combined coding of described base station to each via node, the base station identifies the control information of each via node and launches the data that each via node forwarding remains to be cooperated with the sign RC-ID of identical via node.
7. method according to claim 6 is characterized in that, the method for described combined coding is: chnnel coding, CRC check, constellation modulation, resource allocation, mapping processing are carried out together with the business information of each via node in described base station;
Described control information comprises at least: the resource allocation information, the modulation system that show the affiliated Resource Block of business information;
The method of the data that described via node forwarding remains to be cooperated comprises:
Described via node utilizes the control information of RC-ID blind Detecting, obtains business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information is carried out demodulation;
Emission after encoding respectively to the business information of each via node in described base station, identify the control information and the emission of each user terminal simultaneously respectively with the ID of different user terminals, each via node carries out respectively launching behind the coding identical with the base station to the business information of each via node;
Described user terminal utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
8. method according to claim 6 is characterized in that, described via node is two or more, when described user terminal is only in a plurality of via node coverages, adopts the public information mode to cooperate between the described via node;
The method of the data that described via node forwarding remains to be cooperated comprises:
Described via node utilizes the control information of RC-ID blind Detecting, obtains business information to be cooperated according to the resource allocation information in the control information, and according to the modulation system in the control information business information is carried out demodulation;
Each via node carries out respectively launching behind the identical coding to the business information of each via node, identifies the control information and the emission of each user terminal simultaneously respectively with the ID of different user terminals;
Described user terminal utilizes separately UE-ID blind Detecting to belong to the control information of self respectively, obtain self business information to be cooperated according to the resource allocation information in the control information, and the business information of self is carried out demodulation according to the modulation system in the control information.
9. method according to claim 7 is characterized in that, described different relay stations do not limit sequencing to the blind Detecting of control information.
10. a system that realizes the via node cooperation is characterized in that this system comprises the base station, via node, wherein,
The base station is used for selecting cooperation mode according to the cooperation condition that sets in advance, sends peculiar information mode notice to via node when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, send the public information mode to via node and notify;
Via node is used for according to from the notice of base station, when receiving peculiar information mode notice, adopts peculiar information mode to cooperate between base station and the via node; When receiving the public information mode when notifying, adopt the public information mode to cooperate between base station and the via node.
11. system according to claim 10 is characterized in that, when described via node was two or more, described via node was receiving the public information mode when notifying, and adopted the public information mode to cooperate between each via node.
12. system according to claim 10 is characterized in that, described base station comprises cooperation condition setting unit, selected cell and transmitting element, wherein,
Cooperation condition setting unit is used to be provided with the cooperation condition;
Selected cell is used for selecting cooperation mode according to the cooperation condition that sets in advance, sends peculiar information mode notice to via node when the cooperation condition shows between base station and via node when point-to-point; When the cooperation condition shows between base station and via node for point-to-multipoint, send the public information mode to via node and notify;
Transmitting element is used for sending business information and control information according to the selection result of selected cell to via node.
13. system according to claim 12 is characterized in that, when the cooperation condition of described cooperation condition setting unit setting is: whether user terminal can correctly obtain the base station to user link, and via node is during to the channel quality of user link;
Described selected cell is used for, if user terminal can correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows between base station and via node and to send peculiar information mode notice for point-to-point to via node;
If user terminal can not correctly obtain described base station to user link, and described via node is to the channel quality of user link, and then cooperation condition shows and is point-to-multipoint between base station and via node, sends the public information mode to via node and notifies.
14. system according to claim 12 is characterized in that, when the cooperation condition of described cooperation condition setting unit setting is: whether user terminal is only in base station and certain via node coverage;
Described selected cell is used for, if user terminal only in described base station and certain via node coverage, then described cooperation condition shows between base station and via node and to send peculiar information mode notice for point-to-point to via node;
If user terminal is in described base station and a plurality of via node coverage, when perhaps user terminal is only in described a plurality of via node coverages, described cooperation condition shows between base station and via node to be point-to-multipoint, sends the public information mode to via node and notifies.
15. the system according to claim 13 or 14 is characterized in that, when adopting peculiar information mode to cooperate between described base station and the via node,
Described transmitting element is used for launching behind the business information employing absolute coding to each via node, identifies the control information and the emission of each via node with the sign RN-ID of different via nodes.
16. the system according to claim 13 or 14 is characterized in that, when adopting the public information mode to cooperate between described base station and the via node,
Described transmitting element is used for launching behind the business information employing combined coding to each via node, identifies the control information and the emission of each via node with the sign RC-ID of identical via node.
17., it is characterized in that described via node comprises the first collaborative process unit and the second collaborative process unit according to claim 15 or 16 described systems;
When adopting peculiar information mode to cooperate between described base station and the via node, the described first collaborative process unit is used for only transmitting the data to be cooperated that belong to self;
When adopting the public information mode to cooperate between described base station and the via node, the described second collaborative process unit is used to transmit the data that remain to be cooperated.
18. system according to claim 17, it is characterized in that, the described first collaborative process unit specifically is used for, utilize the RN-ID blind Detecting to belong to the control information of self, obtain business information to be cooperated according to the resource allocation information in the described control information, and business information is carried out demodulation according to the modulation system in the control information.
19. system according to claim 17, it is characterized in that, the described second collaborative process unit specifically is used for, utilize the control information of RC-ID blind Detecting, obtain business information to be cooperated according to the resource allocation information in the control information, and business information is carried out demodulation according to the modulation system in the control information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910083290XA CN101877883A (en) | 2009-04-30 | 2009-04-30 | Method and system for realizing relay node cooperation |
| PCT/CN2009/075800 WO2010124500A1 (en) | 2009-04-30 | 2009-12-21 | Method and system for implementing cooperation of relay nodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910083290XA CN101877883A (en) | 2009-04-30 | 2009-04-30 | Method and system for realizing relay node cooperation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101877883A true CN101877883A (en) | 2010-11-03 |
Family
ID=43020322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910083290XA Pending CN101877883A (en) | 2009-04-30 | 2009-04-30 | Method and system for realizing relay node cooperation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101877883A (en) |
| WO (1) | WO2010124500A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209308A (en) * | 2010-03-30 | 2011-10-05 | 中国移动通信集团公司 | Control information transmission method and device |
| CN110326223A (en) * | 2017-02-28 | 2019-10-11 | 高通股份有限公司 | The method and system to cluster for access point cluster |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070217537A1 (en) * | 2005-08-22 | 2007-09-20 | Nec Laboratories America, Inc. | Minimum Error Rate Lattice Space Time Codes for Wireless Communication |
| CN101170351A (en) * | 2006-10-23 | 2008-04-30 | 株式会社Ntt都科摩 | Data transmission method |
| CN101175010A (en) * | 2006-10-30 | 2008-05-07 | 北京三星通信技术研究有限公司 | Method and apparatus for multiple relay station cooperation in information non-uniform coding system |
| CN101282199A (en) * | 2008-04-14 | 2008-10-08 | 北京邮电大学 | Method for self-adaption selection of relay strategy for multi-relay collaboration communication |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE0303602D0 (en) * | 2003-12-30 | 2003-12-30 | Ericsson Telefon Ab L M | Method and arrangement in self-organizing cooperative network |
| KR20070004370A (en) * | 2005-07-04 | 2007-01-09 | 삼성전자주식회사 | Cooperative relay transmission technique for wireless communication system |
| US8023524B2 (en) * | 2007-10-09 | 2011-09-20 | Nokia Corporation | Cooperative relay system enabling simultaneous broadcast-unicast operation with efficient automatic repeat request functionality |
| CN101394665B (en) * | 2008-11-10 | 2011-10-05 | 哈尔滨工业大学 | High speed mobile customer relay node selection method in cellular system coordination communication |
-
2009
- 2009-04-30 CN CN200910083290XA patent/CN101877883A/en active Pending
- 2009-12-21 WO PCT/CN2009/075800 patent/WO2010124500A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070217537A1 (en) * | 2005-08-22 | 2007-09-20 | Nec Laboratories America, Inc. | Minimum Error Rate Lattice Space Time Codes for Wireless Communication |
| CN101170351A (en) * | 2006-10-23 | 2008-04-30 | 株式会社Ntt都科摩 | Data transmission method |
| CN101175010A (en) * | 2006-10-30 | 2008-05-07 | 北京三星通信技术研究有限公司 | Method and apparatus for multiple relay station cooperation in information non-uniform coding system |
| CN101282199A (en) * | 2008-04-14 | 2008-10-08 | 北京邮电大学 | Method for self-adaption selection of relay strategy for multi-relay collaboration communication |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209308A (en) * | 2010-03-30 | 2011-10-05 | 中国移动通信集团公司 | Control information transmission method and device |
| CN102209308B (en) * | 2010-03-30 | 2015-12-02 | 中国移动通信集团公司 | A kind of transmission method of control information and device thereof |
| CN110326223A (en) * | 2017-02-28 | 2019-10-11 | 高通股份有限公司 | The method and system to cluster for access point cluster |
| CN110326223B (en) * | 2017-02-28 | 2020-09-11 | 高通股份有限公司 | Method and system for cluster clustering of access points |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010124500A1 (en) | 2010-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10063279B2 (en) | Communication system, relay device, communication terminal, and base station | |
| EP2239898B1 (en) | Pilot transmission by relay stations in a multihop relay communication system | |
| CN102461010B (en) | User agency for combining public reference signal and corresponding network | |
| CN101965741B (en) | Method and apparatus for cooperative wireless communications | |
| CN102461302B (en) | Base station, wireless communication system, wireless resource allocating method, and wireless communicating method | |
| US9025517B2 (en) | Flexible ways to indicate downlink/uplink backhaul subframe configurations in a relay system | |
| CN102484878B (en) | Uplink control signal design for wireless system | |
| CN111955042A (en) | Air signal assisted interference cancellation or suppression | |
| US20120002591A1 (en) | Data transmission method for wireless communication system involving relay | |
| CN101789815B (en) | Method for transmitting downlink data and base station | |
| CN102598840A (en) | Wireless communication system having relay device, and method for selecting relay terminal | |
| CN104350693A (en) | Channel estimation method and apparatus for cooperative communication in cellular mobile communication system | |
| EP2472936A1 (en) | Relay station, relay method, and wireless communication device | |
| CN104105072B (en) | Mix multicasting method and mixing multicast system | |
| CN101908954B (en) | Method and device for solving uplink transmission conflict of relay node | |
| US9025521B2 (en) | Method for enabling collaboration among terminals in a wireless network | |
| CN105376868A (en) | Medium access control for wireless systems | |
| CN101959240A (en) | Relay link-physical broadcast channel (R-PBCH) mapping and transmitting method and device | |
| CN101895993B (en) | Channel multiplexing and mapping method and device | |
| CN101827356B (en) | Notice method and notice acquisition method and system of relay subframe configuration | |
| CN101877883A (en) | Method and system for realizing relay node cooperation | |
| KR20080084313A (en) | Apparatus and method for spatial multiplexing in relay broadband wireless communication system | |
| CN102438246B (en) | Adaptive collaborative transmission method for backhaul links of wireless relay | |
| CN102006602B (en) | Method, system and device for transmitting cooperative data | |
| CN103152744B (en) | A kind of wireless relay network ascending transmission method eliminated based on blind known disturbances |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101103 |