CN101998547B - Data forwarding method, base station and relay station - Google Patents
Data forwarding method, base station and relay station Download PDFInfo
- Publication number
- CN101998547B CN101998547B CN 200910163160 CN200910163160A CN101998547B CN 101998547 B CN101998547 B CN 101998547B CN 200910163160 CN200910163160 CN 200910163160 CN 200910163160 A CN200910163160 A CN 200910163160A CN 101998547 B CN101998547 B CN 101998547B
- Authority
- CN
- China
- Prior art keywords
- packet
- forwarding
- subscriber equipment
- base station
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a data forwarding method, a base station and a relay station. The data forwarding method comprises the following steps of: receiving a switch command message sent by a mobility management entity, wherein a user device identification is carried in the switch command message; establishing a forwarding data channel corresponding to the user device identification; sending a connection re-distribution message to the relay station, wherein a channel identification corresponding to the forwarding data channel is carried in the connection re-distribution message so that the relay station is beneficial to sending a data packet of a user device through the forwarding data channel corresponding to the channel identification; receiving the data packet sent by the relay station and sending the data packet to the target base station. The data forwarding method provided by the embodiment of the invention can be used in a relay scene so as to realize lossless switch of the user device from the relay station to the target base station, thereby improving the service quality of a communication system in the relay scene.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to a kind of data forwarding method, base station and relay station.
Background technology
At Long Term Evolution (LTE, Long Term Evolving) in the system, subscriber equipment (UE, User Equipment) under the situation that the signal quality of the decline of the signal quality of the residential quarter at current place or adjacent cells improves, subscriber equipment can switch, and namely subscriber equipment switches to the residential quarter at target BS place from the residential quarter at source base station place.If before switching, subscriber equipment is carrying out data service, need guarantee that the packet of subscriber equipment is not lost in handoff procedure this moment, namely needs in source base station buffering, and subscriber equipment is also confirmed to forward target BS to before the packet that receives is by source base station.When subscriber equipment after target BS inserts, send to subscriber equipment by target BS.
Handoff procedure in the LTE system mainly may further comprise the steps: the switching requirement that mobile management entity (MME, Mobility Management Equipment) reception sources base station sends requires to send handover request to target BS according to switching; Target BS receives handover request, sends switching request response to MME then; The switching request response of mobile management entity receiving target base station, and set up the data forwarding tunnel between the gateway (Servicing Gate); Mobile management entity sends switching command message to source base station, and source base station will need the status report of the packet transmitted to send to mobile management entity, and the packet that will need to transmit by the data forwarding tunnel sends to gateway; Mobile management entity is transmitted to target BS with the status report that receives, and gateway is transmitted to target BS with the packet that receives; Target BS sends to subscriber equipment according to status report with the packet that subscriber equipment does not receive.
The inventor finds in the process of research prior art, under the relaying scene, relay station and provide for relay station between the source base station of service and adopt wave point, transmit the wired passage that needs the preceding packet that changes between relay station and the source base station, relay station can't send to target BS with the packet that needs are transmitted, the data-bag lost that causes subscriber equipment, thereby the service quality of reduction communication system.
Summary of the invention
The invention provides the packet that changeed before a kind of can will the needs sends to target BS from relay station data forwarding method, base station and relay station under the relaying scene.
The data forwarding method that the embodiment of the invention provides comprises: receive the switching command message that mobile management entity sends, carry customer equipment identification in the switching command message; Set up the forwarding data passage corresponding with customer equipment identification; Send the connection reallocation message to relay station, connect the gap marker that carries forwarding data passage correspondence in the reallocation message, so that relay station sends the packet of subscriber equipment by the forwarding data passage corresponding with gap marker; Receive the packet that relay station sends, judge according to package identification whether described packet is the upstream data bag, if described packet is not upstream data bag but the forwarding data bag then sends to target BS with packet; If described packet is the upstream data bag, then send this upstream data bag to core net.Set up the forwarding data passage corresponding with described customer equipment identification, comprising: judge whether the subscriber equipment corresponding with customer equipment identification exists two-way carrying; If, configuration forwarding data passage in the up carrying of two-way carrying; If not, in the carrying corresponding with described subscriber equipment, set up the forwarding data passage.The embodiment of the invention also provides a kind of base station, comprising: first receiving element, be used for receiving the switching command message that mobile management entity sends, and carry customer equipment identification in the switching command message; Passage is set up the unit, is used for setting up the forwarding data passage corresponding with customer equipment identification; The reallocation message transmitting element, be used for sending the connection reallocation message to relay station, connect the gap marker that carries forwarding data passage correspondence in the reallocation message, so that relay station sends the packet of subscriber equipment by the forwarding data passage corresponding with gap marker; Second receiving element is used for receiving the packet that relay station sends; Judging unit is used for judging according to the package identification of described packet whether described packet is the upstream data bag; First trigger element, be used for when the described packet of described judgment unit judges is not upstream data bag but forwarding data bag, the trigger data transmitting element sends to target BS with described forwarding data bag, when the described packet of described judgment unit judges was the upstream data bag, the trigger data transmitting element sent to core net with described upstream data bag; Data transmission unit is used for packet is sent to target BS or core net; Wherein, described passage is set up the unit and comprised: the carrying judge module is used for judging whether the subscriber equipment corresponding with described customer equipment identification exists two-way carrying; And configuration module, be used for when described carrying judge module judges that there is two-way carrying in described subscriber equipment configuration forwarding data passage in the up carrying of described two-way carrying.
In embodiments of the present invention, source base station is by setting up the forwarding data passage, the packet that changes before making relay station will need by this forwarding data passage sends to source base station, and source base station can be transmitted to target BS with packet, thereby finishes the data forwarding of subscriber equipment.The embodiment of the invention provides the data forwarding method under a kind of relaying scene, can forward the forwarding data of subscriber equipment to target BS before by relay station, and then when subscriber equipment switches to target BS, receive forwarding data from target BS.Compared with prior art, the embodiment of the invention can realize the harmless switching of subscriber equipment from the relay station to the target BS, thereby improves the service quality of the communication system under the relaying scene.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of data forwarding method first embodiment in the embodiment of the invention;
Fig. 2 is the method flow diagram of setting up the forwarding data passage corresponding with customer equipment identification in the embodiment of the invention;
Fig. 3 is the flow chart of data forwarding method second embodiment in the embodiment of the invention;
Fig. 4 is the flow chart of method first embodiment of embodiment of the invention relay station status data bag;
Fig. 5 is the flow chart of method second embodiment of embodiment of the invention relay station status data bag;
Fig. 6 is the schematic diagram that source base station sends data in the embodiment of the invention to target BS by relay station;
Among Fig. 7 in the embodiment of the invention source base station obtain the schematic diagram of the packet that subscriber equipment do not receive;
Fig. 8 is the method flow diagram that source base station sends packet in the embodiment of the invention
Fig. 9 is the schematic diagram of the base station in the embodiment of the invention;
Figure 10 is the schematic diagram that the passage among the base station embodiment of the present invention is set up the unit;
Figure 11 is the schematic diagram of the relay station embodiment in the embodiment of the invention.
Embodiment
The invention provides a kind of data forwarding method, base station and relay station.Technical scheme for a better understanding of the present invention describes in detail embodiment provided by the invention below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 1 is the flow chart of data forwarding method first embodiment that provides of the embodiment of the invention.
In embodiments of the present invention, subscriber equipment need switch to target BS from the relay station base station, and source base station provides service for relay station.Subscriber equipment is carrying out data service before switching, therefore need forward target BS to before the packet with subscriber equipment.Data forwarding method in the embodiment of the invention can comprise:
The switching command message that steps A 1, reception mobile management entity send is carried customer equipment identification in the switching command message.
In embodiments of the present invention, source base station can receive the switching command message that mobile management entity sends, and mobile management entity was finished to switch and prepared this moment.
In embodiments of the present invention, source base station is set up the data forwarding passage corresponding with customer equipment identification, and source base station is this forwarding data channel allocation resource, and this forwarding data passage can be used for the packet of transmission user equipment.
Steps A 3, send to connect reallocation message to relay station, connect the gap marker that carries forwarding data passage correspondence in the reallocation message, so that relay station sends the packet of this subscriber equipment by the forwarding data passage corresponding with this gap marker.
In embodiments of the present invention, source base station can send the connection reallocation message to relay station after the foundation of forwarding data passage is finished, carry the gap marker of forwarding data passage correspondence in this connection reallocation message.Wherein, gap marker can comprise bearing identification and channel direction.
Relay station can send the packet of subscriber equipment to source base station by the forwarding data passage corresponding with this gap marker after receiving the connection reallocation message.
The packet that steps A 4, reception relay station send sends to target BS with packet.
In embodiments of the present invention, source base station receives relay station by the packet that the forwarding data passage sends, and packet is sent to target BS.In embodiments of the present invention, after subscriber equipment switched to target BS, target BS can send to subscriber equipment with the packet that receives, and make subscriber equipment can proceed data service, and the data service of subscriber equipment can not interrupted.
In embodiments of the present invention, source base station is by setting up the forwarding data passage, the packet that changes before making relay station will need by this forwarding data passage sends to source base station, and source base station can be transmitted to target BS with packet, thereby finishes the data forwarding of subscriber equipment.Compared with prior art, the embodiment of the invention provides the data forwarding method under a kind of relaying scene, can forward the forwarding data of subscriber equipment to target BS before by relay station, and then when subscriber equipment switches to target BS, receive forwarding data from target BS.The embodiment of the invention can realize the harmless switching of subscriber equipment from the relay station to the target BS, thereby improves the service quality of communication system under the relaying scene.
Referring to Fig. 2, Fig. 2 is the method flow diagram of setting up the forwarding data passage corresponding with customer equipment identification in the embodiment of the invention.
In embodiments of the present invention, source base station can be set up the forwarding data passage corresponding with customer equipment identification after the switching command message that receives the mobile management entity transmission, specifically can comprise:
Whether step B1, the judgement subscriber equipment corresponding with customer equipment identification exist two-way carrying.
Concrete, source base station can judge whether the subscriber equipment corresponding with customer equipment identification exists two-way carrying, if, execution in step B2 then, if not, execution in step B3 then.If when there are the data of the data of up direction and down direction in subscriber equipment, illustrate that then there is two-way carrying in subscriber equipment; If only there are the data of down direction in subscriber equipment, illustrate that then only there is unidirectional carrying in subscriber equipment.
Step B2, in the up carrying of two-way carrying configuration forwarding data passage.
In embodiments of the present invention, source base station can exist under the situation of two-way carrying at subscriber equipment, in the up carrying of two-way carrying, dispose forwarding data passage between relay station and the source base station according to switching command message, in up carrying, comprise upstream data passage and forwarding data passage this moment.
Step B3, in the carrying corresponding with subscriber equipment, set up the forwarding data passage.
In embodiments of the present invention, source base station can not exist under the situation of two-way carrying at subscriber equipment, sets up the forwarding data passage in the carrying corresponding with this subscriber equipment, namely sets up the data channel of up direction in this carrying.
Can be that subscriber equipment is set up the forwarding data passage at different application scenarioss in the embodiment of the invention, make the packet of subscriber equipment to send to source base station by the forwarding data passage.
Referring to Fig. 3, Fig. 3 is the flow chart of data forwarding method second embodiment that provides of the embodiment of the invention.
The embodiment of the invention is come the data of description forward shifting method from the angle of relay station, and the data forwarding method in the embodiment of the invention mainly comprises:
The connection reallocation message that step C1, reception sources base station send is resolved the gap marker that connects reallocation message acquisition forwarding data passage.
Concrete, the connection reallocation message that relay station reception sources base station sends is resolved the gap marker that this connection reallocation message obtains the forwarding data passage.Wherein, gap marker can comprise bearing identification and channel direction.
Step C2, the packet of subscriber equipment is sent to source base station by the forwarding data passage corresponding with gap marker.
In embodiments of the present invention, relay station sends to source base station with the packet of subscriber equipment by the forwarding data passage.Concrete, relay station can be placed on packet on the corresponding forwarding data passage of gap marker, sends to source base station.
In embodiments of the present invention, the connection reallocation message that relay station reception sources base station sends, use the forwarding data passage to send the packet of subscriber equipment according to this connection reallocation message, the embodiment of the invention provides the data forwarding method under a kind of relaying scene, can realize the harmless switching of subscriber equipment from the relay station to the target BS, thereby improve the service quality of the communication system under the relaying scene.
In embodiments of the present invention, exist at subscriber equipment under the situation of two-way carrying, comprise forwarding data bag and upstream data bag in the packet of subscriber equipment, and forwarding data bag and the transmission of upstream data bag use forwarding data passage.Relay station can be when sending packet, at the head increase package identification of packet, so that source base station can make a distinction forwarding data bag and upstream data bag.The form that increases the packet of package identification can be as shown in table 1.
Table 1
Wherein, the current packet of D/C indication is data cell, or control unit, it is data cell in the embodiment of the invention, R is for keeping the position, E is extension bits, extension bits is package identification in embodiments of the present invention, packet data convergence protocol sequence number (PDCP SN, Packet Data Convergence Protocol Serial Number) is the sequence number that the interface (Un interface) of packet between relay station and source base station uses, be packet in the embodiment of the invention at the sequence number of Un interface, Data is data division.In embodiments of the present invention, E is that to identify this packet at 0 o'clock be the upstream data bag, and E is that to identify this packet at 1 o'clock be the forwarding data bag.
In embodiments of the present invention, source base station can judge whether the packet that receive is the upstream data bag according to package identification when receiving the packet of relay station transmission.If it is not upstream data bag but forwarding data bag that source base station is judged the forwarding data bag, for example extension bits E is 1 o'clock, then this packet is sent to target BS.Otherwise, can not send this packet to target BS, send this upstream data bag to core net.Whether be the forwarding data bag in the packet that the embodiment of the invention receives by judgement, can avoid the upstream data bag of forwarding subscriber equipment, thereby reduce the amount of forwarding data, conserve network resources.
In embodiments of the present invention, relay station can also increase the sequence number on the interface (Uu interface) of this packet at relay station and subscriber equipment at the head that needs send to the packet of source base station, thereby make target BS the packet of subscriber equipment can be sent to subscriber equipment in order, reduce the packet probability of errors.In embodiments of the present invention, the form of packet can be as shown in table 2.
Table 2
Wherein, extension bits E is that 1 this packet of expression is the forwarding data bag; PDCP SN represents the sequence number that packet uses at wave point (Un interface); (Uu) PDCP SN represents the sequence number that packet uses at wave point (Uu).Concrete sequence number on PDCP SN (cont.) the expression Un interface, (Uu) concrete sequence number on PDCP SN (cont.) the expression Uu interface, Padding is filler.
In addition, the form of packet can also be as shown in table 3, and this moment, extension bits was 1, the sequence number that uses at the Uu interface for packet after the expression extension bits.
Table 3
Referring to Fig. 4, Fig. 4 is the method first embodiment flow chart of embodiment of the invention relay station status data bag.
In embodiments of the present invention, relay station can also be to source base station status data bag between execution in step C1 and step C2, and relay station can comprise to the process of source base station status data bag:
Step D1, receive the status report of subscriber equipment, comprise the receiving status information of forwarding data bag in the status report.
Relay station can receive the status report of subscriber equipment, and the parse state report obtains the receiving status information of forwarding data bag.Comprise sequence number and accepting state that forwarding data wraps in the Un interface in this receiving status information, receiving status information shows the accepting state of the forwarding data bag corresponding with this sequence number, can comprise in the accepting state receiving and do not receive two states.
Step D2, send first state data packets to source base station, carry receiving status information in first state data packets.
Concrete, relay station can be created first state data packets, carries receiving status information in first state data packets.Wherein, the accepting state of forwarding data bag can use the form of position mapping (bitmap) to represent, for example 1 expression is received, 0 expression does not receive.Concrete form in first state data packets can be as shown in table 4.
Table 4
Wherein, PDU Type represents that this packet is state data packets, FMS (First Missing Sequence Number) represents the sequence number of the packet of first discontinuous reception, first bit bit representation sequence number equals the accepting state of the packet of (FMS+1), and second bit bit representation sequence number equals the accepting state of the packet of (FMS+2).The state data packets that the embodiment of the invention provides can accurately be controlled the accepting state of forwarding data bag, thereby the packet that subscriber equipment does not receive is sent to target BS, realizes the harmless switching of subscriber equipment from the relay station to the target BS.
In addition, the concrete form in first state data packets can also be as shown in table 5.
Table 5
In embodiments of the present invention, only comprise last continuous packet of being confirmed by subscriber equipment in first state data packets at the sequence number of Un interface.
In embodiments of the present invention, source base station can send first state data packets that receives the relay station transmission between the packet (above-mentioned steps A4) that connects reallocation message (above-mentioned steps A3) and receive the relay station transmission to relay station.Carry the receiving status information of forwarding data bag in first state data packets.Wherein, comprise sequence number and the accepting state that forwarding data wraps in the Un interface in the receiving status information.
Source base station sends to target BS according to receiving status information with the forwarding data bag that subscriber equipment does not receive when sending packet to target BS.Wherein, source base station can obtain the sequence number that forwarding data that subscriber equipment do not receive wraps in the Un interface according to state information, then the packet corresponding with sequence number sent to target BS, target BS can receive the forwarding data bag that subscriber equipment does not receive.
For example, the form of first state data packets that source base station receives can be as shown in table 5, only comprise last continuous packet of being confirmed by subscriber equipment in first state data packets at the sequence number of Un interface, source base station judges that all data packet user equipment after this sequence number do not receive that all source base station all sends to target BS with all packets after this sequence number.
In embodiments of the present invention, source base station sends to target BS according to receiving status information with the forwarding data bag that subscriber equipment does not receive, the packet that can avoid forwarding subscriber equipment to receive, thus the amount of forwarding data can be reduced, conserve network resources.
Referring to Fig. 5, Fig. 5 is the method second embodiment flow chart of embodiment of the invention relay station status data bag.
In embodiments of the present invention, there are two or more carryings between subscriber equipment and the relay station, and carrying of existence between relay station and source base station, be that packet in the two or more carryings between subscriber equipment and the relay station transmits by a carrying between relay station and the source base station, subscriber equipment in a carrying of Un interface corresponding to a plurality of carryings at the Uu interface.At this moment, forwarding data wrap in the sequence number of Un interface and sequence number that forwarding data wraps in the Uu interface inequality.The process of relay station status data bag can comprise:
Concrete, relay station can receive the status report of subscriber equipment, carry the receiving status information of forwarding data bag in this status report, comprise in the receiving status information that forwarding data wraps in the accepting state of sequence number and the forwarding data bag of Un interface, can comprise in the accepting state receiving and do not receive two states.
Concrete, relay station sends second state data packets to source base station, carries the sequence number that receiving status information and forwarding data wrap in the Uu interface in second state data packets.Wherein, comprise in the receiving status information that forwarding data wraps in sequence number and the accepting state of Un interface, relay station can obtain the sequence number that forwarding data wraps in the Uu interface according to the sequence number that forwarding data wraps in the Un interface.
In embodiments of the present invention, the form of second state data packets can be as shown in table 6.
Table 6
In embodiments of the present invention, after source base station receives second state data packets of relay station transmission, can resolve second state data packets and obtain the receiving status information of forwarding data bag and the sequence number N1 that forwarding data wraps in the Uu interface.Wherein, carry the sequence number N1 that receiving status information and forwarding data wrap in the Uu interface in second state data packets.
The packet that the forwarding data bag that source base station can also not receive subscriber equipment according to receiving status information and subscriber equipment do not receive sends to target BS at the sequence number N1 of Uu interface.Wherein, source base station can send the state data packets of the sequence number N1 that carries the Uu interface to target BS.
Target BS receives the forwarding data bag of the sequence number that carries the Uu interface, sequence number N1 according to the Uu interface identifies the forwarding data bag that receives, thereby when subscriber equipment switched to target BS, the packet that subscriber equipment is not received sent to subscriber equipment.
Provide concrete scene below and describe the using method of above-mentioned second state data packets.
Referring to Fig. 6, Fig. 6 is the schematic diagram that source base station sends data in the embodiment of the invention to target BS by relay station.
In embodiments of the present invention, use two carryings to transmit packet between subscriber equipment and the relay station, be respectively RB1 and RB2, use a carrying to come the packet of transmission user equipment between relay station and the source base station.As shown in the figure, source base station receives totally 11 packets that two carryings send, and this packet is in the numbering from 0 to 10 of Un interface.Source base station sends to relay station with the packet that receives by the carrying between relay station and the source base station.Relay station receives after the packet of subscriber equipment, by carrying RB1 and carrying RB2 these packets is transmitted to subscriber equipment.Wherein, packet needed to renumber before sending to subscriber equipment, namely to the be responsible for assigning sequence number of Uu interface of data.Packet can be inequality at the sequence number of Un interface at sequence number and the packet of Uu interface.
In embodiments of the present invention, subscriber equipment switches, and forwards target BS to before above-mentioned 11 packets needs, but is preceding turning in the journey, do not need 11 all packets are sent to target BS, only the packet that subscriber equipment need not received carries out preceding commentaries on classics.In embodiments of the present invention, the packet that changes before carrying RB1 needs is respectively 1,2 and 5 at the sequence number of Uu interface.
In second state data packets shown in Figure 7,0 expression does not receive, and 1 expression receives.This state data packets shows that first packet that does not have to receive of subscriber equipment is 1 at the sequence number of Uu interface.It is 1,2 and 5 at the sequence number of Uu interface that source base station is gone up the packet that changes before the needs according to this state data packets acquisition carrying RB1, is that 1,2 and 5 forwarding data bag sends to target BS then with sequence number.
In embodiments of the present invention, if there is a carrying between subscriber equipment and the relay station, this moment, subscriber equipment was one to one at the carrying of Un interface and subscriber equipment at the Uu interface, same packet has identical sequence number at the Un interface with the Uu interface, only need carry the sequence number that forwarding data wraps in the Uu interface in the state data packets that this moment, relay station sent and get final product.
Referring to Fig. 8, Fig. 8 is the method flow diagram that source base station sends packet in the embodiment of the invention to target BS.
In embodiments of the present invention, can carry the delay indication information in the switching command message that source base station receives, postpone the routing information that indication information can the designation data bag, for example the forward-path of time of delay, packet etc.In embodiments of the present invention, if subscriber equipment switches by X2 interface, then the switching command message that receives of source base station is sent by target BS, and target BS can obtain the routing information of packet; If subscriber equipment switches by the S1 interface, then the switching command message that receives of source base station is sent by mobile management entity, and mobile management entity can obtain the routing information of packet as the upper level network element of source base station and target BS.
In embodiments of the present invention, source base station can comprise to the process that target BS sends packet:
In embodiments of the present invention, the packet that source base station receives carries the time of abandoning, if namely packet can't arrive subscriber equipment in this abandons the time, then this packet is abandoned automatically.Source base station is according to postponing indication information, and the forward-path of this packet for example judges that whether the packet that receives can arrive subscriber equipment abandoning in remaining time.If the judgment data bag can arrive subscriber equipment abandoning in remaining time, execution in step F2 then, otherwise, execution in step F3.
In embodiments of the present invention, source base station judges that this packet can arrive subscriber equipment abandoning in remaining time, then send to target BS with this packet.
In embodiments of the present invention, if subscriber equipment switches by X2 interface, then source base station directly sends to target BS with packet.If subscriber equipment switches by the S1 interface, then source base station sends to target BS by gateway with packet.
In embodiments of the present invention, source base station judgment data Bao Buhui arrives subscriber equipment abandoning in remaining time, then abandon sending this packet.Source base station can abandon this packet or stop to send this packet.
Whether the embodiment of the invention can arrive subscriber equipment abandoning by judging target BS in remaining time, can abandon in remaining time at judgment data Bao Buhui and abandon sending this packet when arriving subscriber equipment, avoid sending to this packet to target BS, the embodiment of the invention can reduce the amount of forwarding data, conserve network resources.
Referring to Fig. 9, Fig. 9 is the schematic diagram of the base station that provides of the embodiment of the invention.
The base station that the embodiment of the invention provides can comprise:
First receiving element 110 is used for receiving the switching command message that mobile management entity sends, and carries customer equipment identification in the switching command message;
Passage is set up unit 120, is used for setting up the forwarding data passage corresponding with customer equipment identification;
Reallocation message transmitting element 130, be used for sending the connection reallocation message to relay station, carry the gap marker of forwarding data passage correspondence in this connection reallocation message, so that relay station sends the packet of this subscriber equipment by the forwarding data passage corresponding with gap marker;
Second receiving element 140 is used for receiving the packet that relay station sends;
In embodiments of the present invention, the base station can also comprise:
The preceding judging unit 160 that changes is used for judging according to the package identification of packet whether this packet is the forwarding data bag;
In embodiments of the present invention, the base station can also comprise:
Abandon judging unit 180, be used for whether can arriving target BS in remaining time abandoning according to postponing indication information judgment data bag;
Referring to Figure 10, Figure 10 is the schematic diagram that the passage among the base station embodiment of the present invention is set up the unit.
In base station embodiment of the present invention, passage is set up unit 120 and can be comprised:
Carrying judge module 121 is used for judging whether the subscriber equipment corresponding with customer equipment identification exists two-way carrying;
Configuration module 122 is used for when carrying judge module 121 judges that there is two-way carrying in subscriber equipment, configuration forwarding data passage in the up carrying of two-way carrying;
Set up module 123, be used for when carrying judge module 121 judges that there is not two-way carrying in subscriber equipment, in the carrying corresponding with subscriber equipment, setting up the forwarding data passage.
The base station embodiment that the embodiment of the invention provides can use in aforementioned corresponding data forwarding method first embodiment.
Referring to Figure 11, Figure 11 is the schematic diagram of the relay station embodiment that provides of the embodiment of the invention.
In embodiments of the present invention, relay station can comprise:
Reallocation message receiving element 610 is used for the connection reallocation message that the reception sources base station sends;
Reallocation message resolution unit 620 is used for resolving the gap marker that connects reallocation message acquisition forwarding data passage:
Relay station in the embodiment of the invention can also comprise:
Status report receiving element 640 for the status report that receives subscriber equipment, comprises the receiving status information of forwarding data bag in this status report;
Status data transmitting element 650 is used for sending first state data packets to source base station, carries the receiving status information of forwarding data bag in this first state data packets.
The relay station that the embodiment of the invention provides can use in data forwarding method second embodiment of aforementioned correspondence.
Need to prove, contents such as the information interaction between each unit in the said apparatus, implementation since with the inventive method embodiment based on same design, particular content can repeat no more referring to the narration among the inventive method embodiment herein.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode of software with the general hardware platform of necessity, based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be read-only optical disc that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be personal computer, receiving terminal or the network equipment etc.) the described method of execution each embodiment of the present invention.
More than data forwarding method, base station and relay station that the embodiment of the invention is provided be described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, the part that all can change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (3)
1. a data forwarding method is characterized in that, comprising:
Receive the switching command message that mobile management entity sends, carry customer equipment identification in the described switching command message; Set up the forwarding data passage corresponding with described customer equipment identification;
Send the connection reallocation message to relay station, carry the gap marker of described forwarding data passage correspondence in the described connection reallocation message, so that relay station sends the packet of described subscriber equipment by the forwarding data passage corresponding with described gap marker;
Receive the described packet that relay station sends, judge according to package identification whether described packet is the upstream data bag, if described packet is not upstream data bag but the forwarding data bag then sends to target BS with described packet; If described packet is the upstream data bag, then send this upstream data bag to core net;
Wherein, the forwarding data passage that described foundation is corresponding with described customer equipment identification comprises:
Judge whether the subscriber equipment corresponding with described customer equipment identification exists two-way carrying;
If then in the up carrying of described two-way carrying, dispose the forwarding data passage;
If not, then in the carrying corresponding with described subscriber equipment, set up the forwarding data passage.
2. a base station is characterized in that, comprising:
First receiving element is used for receiving the switching command message that mobile management entity sends, and carries customer equipment identification in the described switching command message;
Passage is set up the unit, is used for setting up the forwarding data passage corresponding with described customer equipment identification; The reallocation message transmitting element, be used for sending the connection reallocation message to relay station, carry the gap marker of described forwarding data passage correspondence in the described connection reallocation message, so that relay station sends the packet of described subscriber equipment by the forwarding data passage corresponding with described gap marker;
Second receiving element is used for receiving the described packet that described relay station sends;
Judging unit is used for judging according to the package identification of described packet whether described packet is the upstream data bag;
First trigger element, be used for when the described packet of described judgment unit judges is not upstream data bag but forwarding data bag, the trigger data transmitting element sends to target BS with described forwarding data bag, when the described packet of described judgment unit judges was the upstream data bag, the trigger data transmitting element sent to core net with described upstream data bag;
Data transmission unit is used for described packet is sent to target BS or core net;
Wherein, described passage is set up the unit and comprised: the carrying judge module is used for judging whether the subscriber equipment corresponding with described customer equipment identification exists two-way carrying; And configuration module, be used for when described carrying judge module judges that there is two-way carrying in described subscriber equipment configuration forwarding data passage in the up carrying of described two-way carrying.
3. base station according to claim 2 is characterized in that, carries the delay indication information in the described switching command message, and described base station also comprises:
Abandon judging unit, be used for judging that according to described delay indication information whether described packet can arrive target BS abandoning in remaining time;
Second trigger element is used for can triggering described data transmission unit described packet is sent to target BS abandoning when arriving target BS in remaining time at the described described packet of judgment unit judges that abandons;
The data discarding unit is used for cannot abandoning sending described packet abandoning when arriving target BS in remaining time at the described described packet of judgment unit judges that abandons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910163160 CN101998547B (en) | 2009-08-18 | 2009-08-18 | Data forwarding method, base station and relay station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910163160 CN101998547B (en) | 2009-08-18 | 2009-08-18 | Data forwarding method, base station and relay station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101998547A CN101998547A (en) | 2011-03-30 |
| CN101998547B true CN101998547B (en) | 2013-08-07 |
Family
ID=43787873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910163160 Active CN101998547B (en) | 2009-08-18 | 2009-08-18 | Data forwarding method, base station and relay station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101998547B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905323A (en) * | 2011-07-29 | 2013-01-30 | 中兴通讯股份有限公司 | Processing method and processing system for nondestructive switching of relay node user interfaces |
| GB2493782B (en) * | 2011-08-19 | 2016-07-27 | Nvidia Corp | Wireless communications system and method |
| GB2493781B (en) * | 2011-08-19 | 2016-07-27 | Nvidia Corp | Wireless communications system and method |
| CN104080129B (en) * | 2013-03-29 | 2017-06-23 | 中国移动通信集团公司 | A kind of method and apparatus of data transfer |
| CN104244349B (en) * | 2013-06-18 | 2021-06-15 | 索尼公司 | Communication apparatus and communication method |
| CN109842919B (en) * | 2017-11-28 | 2021-11-23 | 阿里巴巴集团控股有限公司 | Communication between terminal and base station, and network access method and device of terminal |
| CN110719612B (en) * | 2018-07-11 | 2022-10-11 | 大唐移动通信设备有限公司 | Method and device for forwarding data |
| CN113453290A (en) * | 2020-03-25 | 2021-09-28 | 维沃移动通信有限公司 | Data forwarding method, source node equipment and target node equipment |
| CN113840342B (en) * | 2020-06-24 | 2023-02-03 | 大唐移动通信设备有限公司 | Data forwarding and retransmitting method and device |
| CN113783769B (en) * | 2021-09-14 | 2023-07-25 | 阿波罗智能技术(北京)有限公司 | Method and device for transmitting message in automatic driving and relay equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047974A (en) * | 2006-03-29 | 2007-10-03 | 华为技术有限公司 | Gradual network system and data transmission method when the system switchover |
-
2009
- 2009-08-18 CN CN 200910163160 patent/CN101998547B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047974A (en) * | 2006-03-29 | 2007-10-03 | 华为技术有限公司 | Gradual network system and data transmission method when the system switchover |
Non-Patent Citations (2)
| Title |
|---|
| Alcatel-Lucent Shanghai Bell, Alcatel-Lucent.UE handover for Type-I relay.《3GPP TSG-RAN WG2 #67 R2-094559》.2009,第2-4页第2.2节2.2.1 Option 1、图2. * |
| Email Discussion Rapporteur (NTT DOCOMO, Inc.).Report of email discussion [66#22] on Relay architecture.《3GPP TSG-RAN WG2 #66bis R2-093972》.2009,第8-9页第3.1.2节Item C5:UE mobility,第21页第3.2.2节Item U5:U-plane handling at handover、图2.4. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101998547A (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101998547B (en) | Data forwarding method, base station and relay station | |
| CN101218841B (en) | Method of hard handover in a wireless communication system | |
| US20090262701A1 (en) | Data transfer method and base station | |
| US8200223B2 (en) | Base station and data transfer method for transferring data when a mobile station performs a handover | |
| CN103765955A (en) | 3G LTE INTRA-EUTRAN handover control using empty GRE packets | |
| US8094622B2 (en) | Mobile communication system and method | |
| US8189531B2 (en) | Wireless communication system, wireless base station, and wireless communication control method | |
| KR101473010B1 (en) | Method of providing circuit switched(cs) service using high-speed downlink packet access(hsdpa) or high-speed uplink packet access(hsupa) | |
| WO2005081428A1 (en) | Mobile communication system and mobile communication method | |
| CN101395952A (en) | Pseudo wires for mobility management | |
| KR102196939B1 (en) | Appartus and method for data synchronization in cloud cell communication system | |
| US20090156212A1 (en) | Data transfer method and base station | |
| CN1248534C (en) | Method and arrangement for avoiding loss of error-critical non-real time data during certain handovers | |
| CN101779490A (en) | Handover method in radio communication system, radio base station, and radio terminal | |
| CN100579322C (en) | Be used for transmitting the apparatus and method that net is handled grand diversity at UTRAN | |
| CN101960881A (en) | Method and apparatus for handover procedure in communication network with relay extension | |
| CN101455108A (en) | Base station, route control device, and handover control method | |
| CN101453753B (en) | Mobile communication system, gateway, concentrator, and handover control method | |
| CN102124777A (en) | Handover method and wireless access network device | |
| TW201448630A (en) | System architecture and transmission method for service continuity in heterogeneous wireless networks for user device | |
| CN1545791B (en) | Mobile communication system, equipment and method for updating state information in data trasmission | |
| US9125109B1 (en) | Determining a reordering timer | |
| CN1996814A (en) | A traffic control method | |
| KR101502135B1 (en) | Terminal, gateway and data transmission reception method of the same | |
| CN1901734B (en) | Method and system for no-damage switching in radio cut-in technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |