CN104703230A - ROHC (robust header compression-based) protocol-based switching method, device and system - Google Patents
ROHC (robust header compression-based) protocol-based switching method, device and system Download PDFInfo
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- 230000006837 decompression Effects 0.000 claims description 11
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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Abstract
An embodiment of the invention discloses an ROHC (robust header compression-based) protocol-based switching method, device and system. The method includes the steps: a target base station receives first ROHC context information; the target base station learns the first ROHC context information to obtain second ROHC context information.
Description
Technical field
The present invention relates to the handoff technique of wireless communication field, particularly relate to a kind of changing method based on robustness header compression (ROHC, Robust Header Compression) agreement, equipment and system.
Background technology
ROHC is a kind of based on Internet Protocol (IP, Internet Protocol) universal compressed technology, ROHC can be applied to the 3rd generation (3G, The Third Generation) any one standard of mobile communication, Long Term Evolution (LTE can also be applied in, Long Term Evolution) etc. technically, about excessive header word joint number can being compressed to 1 byte under the channel condition of extreme difference, greatly improve the utilance of bandwidth.
ROHC can be operated between base station and user terminal, realizes compression and the decompress(ion) of header respectively by compressor reducer and decompression machine.In compression and decompression procedure, compressor reducer and decompression machine need to safeguard that a set of contextual information maintains efficient compression efficiency separately, this contextual information needs compressor reducer and decompression machine by learning to obtain, if contextual information is lost, ROHC must return back to most reset condition, re-start and learn and safeguard new contextual information, but in learning process, the compression efficiency of ROHC is extremely low.Therefore, when user terminal moves to another base station B area of coverage from the area of coverage of a base station A time, user terminal can be switched to base station B from base station A, due to the contextual information that base station B is not corresponding with this user terminal, therefore, need to be undertaken relearning can obtain contextual information by ROHC, like this, will cause after user terminal switches between base station, the compression efficiency of ROHC is extremely low.
Summary of the invention
In view of this, the embodiment of the present invention expect a kind of changing method based on robustness header compression agreement, equipment and system are provided, can make user terminal switch between base station after still keep higher compression efficiency.
For achieving the above object, technical scheme of the present invention is achieved in that
First aspect, embodiments provides a kind of changing method based on robustness header compression ROHC agreement, and described method comprises:
Receive a ROHC contextual information;
A described ROHC contextual information is learnt, obtains the 2nd ROHC contextual information.
The implementation possible according to the first, in conjunction with first aspect, a described ROHC contextual information, for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal,
Described 2nd ROHC contextual information, for target BS and mutual the used ROHC contextual information of user terminal, described 2nd ROHC contextual information comprises: described target BS and mutual the second the used traffic stream identifier of described user terminal, described target BS and mutual the second the used stream identification of described user terminal, described target BS and mutual the 2nd the used ROHC operational mode of described user terminal, described target BS and mutual the second the used compression end of described user terminal conciliate the state of pressure side, described target BS and mutual the second the used static context of described user terminal and described target BS and mutual the second the used dynamic context of described user terminal.
The implementation possible according to the second, in conjunction with the implementation that the first is possible, described target BS learns a described ROHC contextual information, obtains the 2nd ROHC contextual information, comprising:
Self and mutual the 2nd the used ROHC operational mode of described user terminal are chosen as a described ROHC operational mode by described target BS; ;
The condition selecting that self and mutual the second the used compression end of described user terminal are conciliate pressure side by described target BS is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream by described target BS as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal by described target BS;
Described target BS arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS.
The implementation possible according to the third, in conjunction with the implementation that the second is possible, described target BS arranges described target BS and mutual the second the used traffic stream identifier of described user terminal and described target BS and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, comprising:
Described target BS obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used traffic stream identifier of described user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
Described target BS obtains according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used stream identification of described user terminal together with the stream identification that do not comprise of described first stream identification.
Second aspect, embodiments provides a kind of changing method based on robustness header compression ROHC agreement, and described method comprises:
Source base station sends a ROHC contextual information.
The implementation possible according to the first, in conjunction with second aspect, a described ROHC contextual information is used for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal.
The third aspect, embodiments provides a kind of target BS, comprising: receiving element and unit,
Described receiving element, for receiving a ROHC contextual information;
Described unit, for learning a described ROHC contextual information, obtains the 2nd ROHC contextual information.
The implementation possible according to the first, in conjunction with the third aspect, a described ROHC contextual information, for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal,
Described 2nd ROHC contextual information, for target BS and mutual the used ROHC contextual information of user terminal, described 2nd ROHC contextual information comprises: described target BS and mutual the second the used traffic stream identifier of described user terminal, described target BS and mutual the second the used stream identification of described user terminal, described target BS and mutual the 2nd the used ROHC operational mode of described user terminal, described target BS and mutual the second the used compression end of described user terminal conciliate the state of pressure side, described target BS and mutual the second the used static context of described user terminal and described target BS and mutual the second the used dynamic context of described user terminal.
The implementation possible according to the second, in conjunction with the implementation that the first is possible, described unit specifically for:
The operational mode of self and mutual the 2nd the used ROHC of described user terminal is chosen as a described ROHC operational mode;
The condition selecting that pressure side is conciliate in self and mutual the second the used compression end of described user terminal is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal;
According to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal are set.
The implementation possible according to the third, in conjunction with the implementation that the second is possible, described unit arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, comprising:
Described unit obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used traffic stream identifier of described user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
From described first traffic stream identifier, obtain according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports, and with described target BS to support and as described target BS and mutual the second the used stream identification of described user terminal together with the stream identification that do not comprise of described first stream identification.
Fourth aspect, a kind of source base station that the embodiment of the present invention provides, comprising: transmitting element, for sending a ROHC contextual information.
The implementation possible according to the first, in conjunction with first aspect, a described ROHC contextual information is used for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal.
5th aspect, embodiments provides a kind of switched system based on robustness header compression ROHC agreement, and described system comprises:
Target BS according to any one of the third aspect and the source base station according to any one of fourth aspect.
The changing method based on robustness header compression agreement that the embodiment of the present invention provides, equipment and system, in user terminal handoff procedure, source base station sends a ROHC contextual information to target BS, target BS can be learnt a ROHC contextual information, and obtain the 2nd ROHC contextual information, so, just can make after user terminal switches between base station, still to keep higher compression efficiency.
Accompanying drawing explanation
The application scenarios schematic diagram that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of a kind of changing method based on ROHC agreement of the embodiment of the present invention;
Fig. 3 is the another kind of schematic flow sheet based on the changing method of ROHC agreement of the embodiment of the present invention;
Fig. 4 is the detailed process schematic diagram of a kind of changing method based on ROHC agreement of the embodiment of the present invention;
Fig. 5 is the structural representation of a kind of target BS of the embodiment of the present invention;
Fig. 6 is the structural representation of a kind of source base station of the embodiment of the present invention;
Fig. 7 is the structural representation of a kind of switched system based on ROHC agreement of the embodiment of the present invention;
Fig. 8 is the another kind of structural representation based on the switched system of ROHC agreement of the embodiment of the present invention;
Fig. 9 is the structural representation of a kind of switched system based on ROHC agreement of the embodiment of the present invention;
Figure 10 is the another kind of structural representation based on the switched system of ROHC agreement of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
In order to the technical scheme of the embodiment of the present invention can be clearly described, can at System Architecture Evolution (SAE as shown in Figure 1, System Architecture Evolution) under systematic difference scene, the technical scheme that the embodiment of the present invention is mentioned is described, it should be noted that, this application scenarios is only used for the technical scheme of the exemplary elaboration embodiment of the present invention, do not represent that technical scheme that the embodiment of the present invention provides is only for this scene, understandable, in the application scenarios that application scenarios is therewith similar, the technical scheme that the embodiment of the present invention proposes stands good.In FIG, base station A12 and base station B13 can be evolved base station (eNB, evolved Node B), and mobile management entity (MME, Mobility Management Entity) is for functions such as responsible mobile management, signaling process; Gateway (S-GW, Serving Gateway) is responsible for the function such as Media Stream process and forwarding; Packet data gateway (P-GW, PDN Gateway) is then the interface gateway with external network.
As user terminal (UE, User Equipment) 11 when moving to the coverage of base station B13 from the coverage of base station A12, as the dotted line arrows, UE11 needs to be switched to base station B13 from base station A12, now, base station A12 can be referred to as source base station, and base station B13 can be referred to as target BS.After being switched to base station B13, base station B13 does not have the contextual information about ROHC with UE11, therefore, under existing technical background, after the completion of the handover, user terminal and target BS both sides need again to learn from most reset condition and safeguard the contextual information of ROHC, the ROHC information obtaining them respectively to make user terminal and target BS both sides and carry out required for ROHC process in reciprocal process, like this, will cause after user terminal switches between base station, the compression efficiency of ROHC is extremely low.
Shown in Figure 2, be a kind of changing method based on ROHC agreement that the embodiment of the present invention provides under the application scenarios shown in Fig. 1, comprise the following steps:
S201: target BS receives a ROHC contextual information;
Exemplary, target BS can receive a ROHC contextual information from source base station any time in the handoff procedure between base station, in the present embodiment, a ROHC contextual information can be receive in the mode of ROHC synchronizing information, and the embodiment of the present invention does not do any restriction to this; In like manner, the concrete form of ROHC synchronizing information can be independent signaling message, also can be to add the medium of the message that source base station sends to the form of custom field in handoff procedure, and the embodiment of the present invention does not do any restriction to this yet.
Here, a described ROHC contextual information for: source base station and user terminal mutual time carry out the ROHC contextual information that ROHC uses;
Further, a described ROHC contextual information can comprise: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal, wherein, first traffic stream identifier, first stream identification is source base station when mutual with user terminal, the Business Stream of the ROHC supported and the mark of data flow, one ROHC operational mode be source base station and described user terminal mutual time carry out the operational mode of ROHC, first compression end conciliate the state of pressure side be described source base station and described user terminal mutual time carry out ROHC compression end conciliate the state of pressure side, first static context and the first dynamic context for described source base station and described user terminal mutual time carry out static context required for ROHC and dynamic context.
S202: after user terminal switches, target BS learns a described ROHC contextual information, obtains the 2nd ROHC contextual information.
Exemplary, described 2nd ROHC contextual information is: target BS and user terminal mutual time carry out the ROHC contextual information that ROHC uses; can comprise: described target BS and mutual the second the used traffic stream identifier of described user terminal, described target BS and mutual the second the used stream identification of described user terminal, described target BS and mutual the 2nd the used ROHC operational mode of described user terminal, described target BS and mutual the second the used compression end of described user terminal conciliate the state of pressure side, described target BS and mutual the second the used static context of described user terminal and described target BS and mutual the second the used dynamic context of described user terminal, similar to a ROHC contextual information in specific description and S201, wherein, second traffic stream identifier, second stream identification is target BS when mutual with user terminal, the Business Stream of the ROHC supported and the mark of data flow, 2nd ROHC operational mode be target BS and described user terminal mutual time carry out the operational mode of ROHC, second compression end conciliate the state of pressure side be described target BS and described user terminal mutual time carry out ROHC compression end conciliate the state of pressure side, second static context and the second dynamic context for described target BS and described user terminal mutual time carry out static context required for ROHC and dynamic context.
Exemplary, target BS learns a described ROHC contextual information, and the detailed process obtaining the 2nd ROHC contextual information can comprise:
The operational mode of self and mutual the 2nd the used ROHC of described user terminal is chosen as a described ROHC operational mode by target BS;
The condition selecting that self and mutual the second the used compression end of described user terminal are conciliate pressure side by described target BS is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream by described target BS as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal by described target BS;
Described target BS arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS.
Further, target BS arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, specifically can comprise:
Target BS obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used traffic stream identifier of described user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
Described target BS obtains according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used stream identification of described user terminal together with the stream identification that do not comprise of described first stream identification.
It should be noted that, difference between 2nd ROHC contextual information and a ROHC contextual information and can be distinguished to determine according to the relation between target BS and source base station, such as, in the present embodiment, as shown in Figure 1, when target BS is connected with same S-GW with source base station time, for user terminal, carry out up-downgoing data communication and carry out up-downgoing data communication by source base station being identical haply by target BS, therefore, the difference between a ROHC contextual information and the 2nd ROHC contextual information is little; And when target BS is connected from different S-GW respectively with source base station, not even with S-GW respectively under different MME management in, difference between 2nd ROHC contextual information and a ROHC contextual information will be relatively large, understandable, the embodiment of the present invention does not do concrete restriction to this.
Embodiments provide a kind of changing method based on ROHC agreement, in user terminal handoff procedure, source base station sends a ROHC contextual information to target BS, target BS can be learnt a ROHC contextual information, and obtain the 2nd ROHC contextual information, so, just can make after user terminal switches between base station, still to keep higher compression efficiency.
On the basis of embodiment as shown in Figure 2, shown in Figure 3, a kind of changing method based on ROHC agreement that the embodiment of the present invention provides, can also comprise the following steps:
S301: source base station sends a ROHC contextual information;
Exemplary, source base station can send a ROHC contextual information to target BS any time in the handoff procedure between base station, to make target BS learn a described ROHC contextual information, obtain target BS and mutual the 2nd the used ROHC contextual information of user terminal.In the present embodiment, a ROHC contextual information can be send in the mode of ROHC synchronizing information, and the embodiment of the present invention does not do any restriction to this; In like manner, the concrete form of ROHC synchronizing information can be independent signaling message, also can be to add the medium of the message of source base station transmission to the form of custom field in handoff procedure, and the embodiment of the present invention does not do any restriction to this yet.
Here, a described ROHC contextual information for: source base station and user terminal mutual time carry out the ROHC contextual information that ROHC uses;
Further, a described ROHC contextual information comprises: source base station and mutual the first the used traffic stream identifier of described user terminal, source base station and mutual the first the used compression end of mutual used a ROHC operational mode, source base station and the described user terminal of mutual the first the used stream identification of described user terminal, source base station and described user terminal conciliate the state of pressure side, source base station and mutual the first the used static context of described user terminal and source base station and mutual the first the used dynamic context of described user terminal, wherein, first traffic stream identifier, first stream identification is source base station when mutual with user terminal, the Business Stream of the ROHC supported and the mark of data flow, one ROHC operational mode be source base station and described user terminal mutual time carry out the operational mode of ROHC, first compression end conciliate the state of pressure side be described source base station and described user terminal mutual time carry out ROHC compression end conciliate the state of pressure side, first static context and the first dynamic context for described source base station and described user terminal mutual time carry out static context required for ROHC and dynamic context.
Embodiments provide a kind of changing method based on ROHC agreement, in user terminal handoff procedure, source base station sends a ROHC contextual information to target BS, target BS can be learnt a ROHC contextual information, and obtain the 2nd ROHC contextual information, so, just can make after user terminal switches between base station, still to keep higher compression efficiency.
Shown in Figure 4, be the detailed process of a kind of changing method based on ROHC agreement that the embodiment of the present invention provides under the application scenarios shown in Fig. 1, comprise the following steps:
Step 401: source base station sends a ROHC contextual information to target BS;
Exemplary, in application scenarios as shown in Figure 1, time the region that UE11 is covered by source base station (base station A12) moves to the region that target BS (base station B13) covers, the signal strength signal intensity (such as base station A12 and base station B13 etc.) of UE11 to each base station is measured, and the result of measurement is sent to source base station as measurement report, whether source base station can also serve this UE according to measurement report judgement, when adjudicate result think can not continue to serve this UE time, another one base station (the base station B13 in the present embodiment) can be selected as the target BS switched.Now, source base station can send handover request (Handover Request) message to target BS, and start UE11 to be switched to target BS from source base station, concrete handoff procedure is the known technology of this area, does not repeat them here.
It should be noted that, be switched to the process of target BS at UE11 from source base station, one ROHC contextual information can be sent to target BS in the mode of ROHC synchronizing information by source base station, concrete mode can be that described ROHC synchronizing information is added custom field by source base station in handover request message, and this handover request message is sent to target BS; Also can be source base station after sending handover request message to target BS, increase transmission ROHC synchronizing information to target BS.The concrete mode embodiment of the present invention does not do any restriction, as long as source base station sends the concrete mode of a described ROHC contextual information all in the protection range of the embodiment of the present invention to target BS in handoff procedure.
Concrete, a ROHC contextual information can be source base station and user terminal mutual time, carry out the ROHC contextual information that ROHC uses.
Further, a ROHC contextual information can comprise: source base station and mutual the first the used compression end of mutual used a ROHC operational mode, source base station and the user terminal of user terminal mutual used the first traffic stream identifier, source base station and user terminal mutual used the first stream identification, source base station and user terminal conciliate the state of pressure side, source base station and mutual the first the used static context of user terminal and source base station and mutual the first the used dynamic context of user terminal, wherein, first traffic stream identifier, first stream identification is source base station when mutual with user terminal, the Business Stream of the ROHC supported and the mark of data flow, one ROHC operational mode be source base station and described user terminal mutual time carry out the operational mode of ROHC, first compression end conciliate the state of pressure side be described source base station and described user terminal mutual time carry out ROHC compression end conciliate the state of pressure side, first static context and the first dynamic context for described source base station and described user terminal mutual time carry out static context required for ROHC and dynamic context, corresponding content is corresponding with it by concrete field, as shown in table 1,
| Field | Implication |
| Cid | Stream identification |
| Mode | Operational mode |
| State | Compression end conciliates the state of pressure side |
| Profile | Traffic stream identifier |
| StaticFiled | Static context |
| RefFiled | Dynamic context |
Table 1
Wherein, Mode can value be: unidirectional (U, Unidirectional) pattern, preferably (O, Optimistic) pattern, reliable (R, Reliable) pattern.State can value: compression end is initial condition (IR, Initiationand Refresh state) state, single order state (FO, First Order state) state, Second Order state SO, Second Order state) state; Separating pressure side is no context state (NC, No Context state) state, full context state (FC, Full Context state) state, static context state (SC, StaticContext state) state.StaticFiled mainly refers to that IP source address, IP destination address, UDP source port, UDP target port etc. can the fields of differentiated service stream information, is also static context information usually.RefFiled mainly refers to the reference value information of some critical fielies, comprise: network packet identification number (IPID, Internet Protocol ID) field, timestamp (TS, Time Stamp) field, sequence number (SN, SequenceNumber) fields etc. are also dynamic context information usually.
Step 402: after user terminal switches, target BS learns a described ROHC contextual information, obtains the 2nd ROHC contextual information.
Exemplary, described target BS is after receiving a described ROHC contextual information, can learn it, in the present embodiment, target BS can learn a ROHC contextual information as shown in table 1, the 2nd ROHC contextual information that ROHC uses is carried out when obtaining mutual with user terminal, and described 2nd ROHC contextual information can comprise: described target BS and mutual the second the used traffic stream identifier of described user terminal, described target BS and mutual the second the used stream identification of described user terminal, described target BS and mutual the 2nd the used ROHC operational mode of described user terminal, described target BS and mutual the second the used compression end of described user terminal conciliate the state of pressure side, described target BS and mutual the second the used static context of described user terminal and described target BS and mutual the second the used dynamic context of described user terminal, existing detailed description in specific description previous embodiment, do not repeat them here.
Exemplary, target BS learns a described ROHC contextual information, and the detailed process obtaining the 2nd ROHC contextual information can comprise:
The operational mode of self and mutual the 2nd the used ROHC of described user terminal is chosen as a described ROHC operational mode by target BS;
The condition selecting that self and mutual the second the used compression end of described user terminal are conciliate pressure side by described target BS is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream by described target BS as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal by described target BS;
Described target BS arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS.
Further, target BS arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, specifically can comprise:
Target BS obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used traffic stream identifier of described user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
Described target BS obtains according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports from described first stream identification, and with described target BS to support and as described target BS and mutual the second the used stream identification of described user terminal together with the stream identification that do not comprise of described first stream identification, it should be noted that, the number that the number of the second stream identification is supported according to target BS self is determined, that is, even if the first stream identification is supported for described target BS, but when the number that the number and target BS of the first stream identification are supported self is not identical, be as the criterion with the number that target BS self is supported.
What needs further illustrated is, difference between 2nd ROHC contextual information and a ROHC contextual information and can be distinguished to determine according to the relation between target BS and source base station, such as, in the present embodiment, as shown in Figure 1, when target BS is connected with same S-GW with source base station time, for user terminal, carry out up-downgoing data communication and carry out up-downgoing data communication by source base station being identical haply by target BS, therefore, the difference between a ROHC contextual information and the 2nd ROHC contextual information is little; And when target BS is connected from different S-GW respectively with source base station, not even with S-GW respectively under different MME management in, difference between 2nd ROHC contextual information and a ROHC contextual information will be relatively large, understandable, the embodiment of the present invention does not do concrete restriction to this.
Understandable, difference between one ROHC contextual information and the 2nd ROHC contextual information only embodies the difference between source base station and target BS, and subscriber terminal side does not change, therefore, when user terminal switches complete, after target BS sends switching confirmation, user terminal side can when without the need to making any change, and carry out heading compression by the 2nd ROHC contextual information between target BS, do not need again most carrying out contextual mutual study and maintenance between reset condition and target BS, thus the compression efficiency of ROHC after improve handoff procedure.
Embodiments provide a kind of changing method based on ROHC agreement, in user terminal handoff procedure, source base station sends a ROHC contextual information to target BS, make target BS can carry out learning according to a ROHC contextual information and obtain target BS and user terminal mutual time, carry out the 2nd ROHC contextual information that ROHC uses, so, just can make after user terminal switches between base station, still to keep higher compression efficiency.
Shown in Figure 5, be a kind of target BS 50 that the embodiment of the present invention provides, comprise: receiving element 501 and unit 502,
Receiving element 501, for receiving a ROHC contextual information;
Unit 502, for learning a described ROHC contextual information, obtains the 2nd ROHC contextual information.
Exemplary, receiving element 501 can receive a ROHC contextual information from source base station any time in the handoff procedure between base station, in the present embodiment, one ROHC contextual information can be receive in the mode of ROHC synchronizing information, and the embodiment of the present invention does not do any restriction to this; In like manner, the concrete form of ROHC synchronizing information can be independent signaling message, also can be add the medium of the message that source base station sends to the form of custom field in handoff procedure, the embodiment of the present invention does not do any restriction to this yet, concrete, a ROHC contextual information for: source base station and user terminal mutual time carry out the ROHC contextual information that ROHC uses;
Further, a described ROHC contextual information can comprise: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal, wherein, first traffic stream identifier, first stream identification is source base station when mutual with user terminal, the Business Stream of the ROHC supported and the mark of data flow, one ROHC operational mode be source base station and described user terminal mutual time carry out the operational mode of ROHC, first compression end conciliate the state of pressure side be described source base station and described user terminal mutual time carry out ROHC compression end conciliate the state of pressure side, first static context and the first dynamic context for described source base station and described user terminal mutual time carry out static context required for ROHC and dynamic context, corresponding content is as shown in table 1, do not repeat them here.
Further, the 2nd ROHC contextual information be target BS 50 mutual with user terminal time carry out the ROHC contextual information that ROHC uses, also can comprise: target BS 50 and mutual the second the used traffic stream identifier of user terminal, target BS 50 and mutual the second the used stream identification of user terminal, target BS 50 and mutual the 2nd the used ROHC operational mode of user terminal, target BS 50 and mutual the second the used compression end of user terminal conciliate the state of pressure side, target BS 50 and mutual the second the used static context of user terminal and target BS 50 and mutual the second the used dynamic context of user terminal, existing description in specific description previous embodiment, do not repeat them here.
Exemplary, unit 502 specifically for:
The operational mode of described target BS 50 self and mutual the 2nd the used ROHC of described user terminal is chosen as a described ROHC operational mode;
The condition selecting that described target BS 50 self and mutual the second the used compression end of described user terminal are conciliate pressure side is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal;
According to the oneself state of described first traffic stream identifier, described first stream identification and target BS 50, self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal are set.
Further, unit 502 arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, specifically comprises:
Described unit obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as target BS 50 and mutual used described second traffic stream identifier of user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
And from described first traffic stream identifier, obtain according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports, and with described target BS to support and as target BS 50 and mutual used described second stream identification of user terminal together with the stream identification that do not comprise of described first stream identification, it should be noted that, the number that the number of the second stream identification is supported according to target BS self is determined, that is, even if the first stream identification is supported for described target BS, but when the number that the number and target BS of the first stream identification are supported self is not identical, be as the criterion with the number that target BS self is supported.
It should be noted that, difference between 2nd ROHC contextual information and a ROHC contextual information and can be distinguished to determine according to the relation between target BS and source base station, such as, in the present embodiment, as shown in Figure 1, when target BS is connected with same S-GW with source base station time, for user terminal, carry out up-downgoing data communication and carry out up-downgoing data communication by source base station being identical haply by target BS, therefore, the difference between a ROHC contextual information and the 2nd ROHC contextual information is little; And when target BS is connected from different S-GW respectively with source base station, not even with S-GW respectively under different MME management in, difference between 2nd ROHC contextual information and a ROHC contextual information will be relatively large, understandable, the embodiment of the present invention does not do concrete restriction to this.
Understandable, difference between one ROHC contextual information and the 2nd ROHC contextual information only embodies the difference between source base station and target BS, and subscriber terminal side does not change, therefore, when user terminal switches complete, after target BS sends switching confirmation, user terminal side can when without the need to making any change, and carry out heading compression by the 2nd ROHC contextual information between target BS, do not need again most carrying out contextual mutual study and maintenance between reset condition and target BS, thus the compression efficiency of ROHC after improve handoff procedure.
It should be noted that, as shown in Figure 6, target BS 50 can also comprise;
First memory cell 503, for storing described 2nd ROHC contextual information.What the first memory cell 503 was concrete can comprise volatile memory and/or nonvolatile memory.Illustrate and nonrestrictive, nonvolatile memory comprises: read-only memory (ROM), programming ROM (PROM), electrically programmable ROM(EPROM), electric erasable PROM(EEPROM), flash memories and/or nonvolatile RAM (NVRAM).Volatile memory comprises random-access memory (ram), and it can be used as external cache memory.To illustrate and nonrestrictive, RAM has various ways, such as synchronous random access memory (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM(DDR SDRAM), enhancement mode SDRAM(ESDRAM), synchronization links DRAM(SLDRAM) and direct Rambus RAM(DRRAM).First memory cell 503 is intended to including, but not limited to above-mentioned these or other suitable type of memory any.
Embodiments provide a kind of target BS 50, in user terminal handoff procedure, target BS 50 receives the ROHC contextual information that source base station sends, and carry out learning according to a ROHC contextual information and obtain the 2nd ROHC contextual information, can make after user terminal switches between base station, still to keep higher compression efficiency.
Shown in Figure 7, be a kind of source base station 70 that the embodiment of the present invention provides, comprise:
Transmitting element 701, for sending a ROHC contextual information.
Exemplary, be switched to the process of target BS at UE11 from source base station 70, transmitting element 701 can send a ROHC contextual information to target BS any time in the handoff procedure between base station, to make target BS learn a described ROHC contextual information, obtain target BS and mutual the 2nd the used ROHC contextual information of user terminal.In the present embodiment, a ROHC contextual information can be send in the mode of ROHC synchronizing information, and the embodiment of the present invention does not do any restriction to this; In like manner, the concrete form of ROHC synchronizing information can be independent signaling message, also can be to add the medium of the message of source base station 70 transmission to the form of custom field in handoff procedure, and the embodiment of the present invention does not do any restriction to this yet.
Here, a described ROHC contextual information for: source base station 70 and user terminal mutual time carry out the ROHC contextual information that ROHC uses;
Further, a ROHC contextual information can comprise: source base station 70 and mutual the first the used traffic stream identifier of user terminal, source base station 70 and mutual the first the used stream identification of user terminal, source base station 70 and mutual the used ROHC operational mode of user terminal, source base station 70 and user terminal mutual the first used compression end conciliate the state of pressure side, source base station 70 and mutual the first the used static context of user terminal and source base station 70 and mutual the first the used dynamic context of user terminal, wherein, first traffic stream identifier, first stream identification is source base station 70 when mutual with user terminal, the Business Stream of the ROHC supported and the mark of data flow, one ROHC operational mode be source base station 70 mutual with described user terminal time carry out the operational mode of ROHC, first compression end conciliate the state of pressure side be described source base station 70 mutual with described user terminal time carry out ROHC compression end conciliate the state of pressure side, first static context and the first dynamic context for described source base station 70 mutual with described user terminal time carry out static context required for ROHC and dynamic context, corresponding content is corresponding with it by concrete field, as shown in table 1, do not repeat them here.
It should be noted that, as shown in Figure 8, source base station 70 can also comprise the second memory cell 702, for storing a ROHC contextual information; What memory cell 702 was concrete can comprise volatile memory and/or nonvolatile memory.Illustrate and nonrestrictive, nonvolatile memory comprises: read-only memory (ROM), programming ROM (PROM), electrically programmable ROM(EPROM), electric erasable PROM(EEPROM), flash memories and/or nonvolatile RAM (NVRAM).Volatile memory comprises random-access memory (ram), and it can be used as external cache memory.To illustrate and nonrestrictive, RAM has various ways, such as synchronous random access memory (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM(DDR SDRAM), enhancement mode SDRAM(ESDRAM), synchronization links DRAM(SLDRAM) and direct Rambus RAM(DRRAM).Memory cell 702 is intended to including, but not limited to above-mentioned these or other suitable type of memory any.
Embodiments provide a kind of source base station 70, in user terminal handoff procedure, source base station 70 sends a ROHC contextual information to target BS, target BS is made to carry out learning according to a ROHC contextual information and to obtain the 2nd ROHC contextual information, can make after user terminal switches between base station, still to keep higher compression efficiency.
Shown in Figure 9, be a kind of switched system 90 based on ROHC agreement that the embodiment of the present invention provides, can comprise: the source base station 70 described in aforementioned any embodiment and the target BS described in aforementioned any embodiment 50.
Exemplary, see Figure 10, this system can also comprise user terminal 100, wherein, user terminal 100 can be cell phone, cordless telephone, Session Initiation Protocol phone, PDA(Personal Digital Assistant), the handheld device with wireless connection capability, smart mobile phone, panel computer and miscellaneous equipment, is not limited in any way at this.
Embodiments provide a kind of switched system 90 based on ROHC agreement, in user terminal 100 handoff procedure, source base station 70 sends a ROHC contextual information to target BS 50, target BS 50 is made to carry out learning according to a ROHC contextual information and to obtain the 2nd ROHC contextual information, can make after user terminal 100 switches between base station, still to keep higher compression efficiency.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (13)
1. based on a changing method for robustness header compression ROHC agreement, it is characterized in that, described method comprises:
Receive a ROHC contextual information;
A described ROHC contextual information is learnt, obtains the 2nd ROHC contextual information.
2. method according to claim 1, is characterized in that, a described ROHC contextual information, for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal,
Described 2nd ROHC contextual information, for target BS and mutual the used ROHC contextual information of user terminal, described 2nd ROHC contextual information comprises: described target BS and mutual the second the used traffic stream identifier of described user terminal, described target BS and mutual the second the used stream identification of described user terminal, described target BS and mutual the 2nd the used ROHC operational mode of described user terminal, described target BS and mutual the second the used compression end of described user terminal conciliate the state of pressure side, described target BS and mutual the second the used static context of described user terminal and described target BS and mutual the second the used dynamic context of described user terminal.
3. method according to claim 2, is characterized in that, described target BS learns a described ROHC contextual information, obtains the 2nd ROHC contextual information, comprising:
Self and mutual the 2nd the used ROHC operational mode of described user terminal are chosen as a described ROHC operational mode by described target BS;
The condition selecting that self and mutual the second the used compression end of described user terminal are conciliate pressure side by described target BS is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream by described target BS as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal by described target BS;
Described target BS arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS.
4. method according to claim 3, it is characterized in that, described target BS arranges described target BS and mutual the second the used traffic stream identifier of described user terminal and described target BS and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, comprising:
Described target BS obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used traffic stream identifier of described user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
Described target BS obtains according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used stream identification of described user terminal together with the stream identification that do not comprise of described first stream identification.
5. based on a changing method for robustness header compression ROHC agreement, it is characterized in that, described method comprises:
Source base station sends a ROHC contextual information.
6. method according to claim 5, is characterized in that, a described ROHC contextual information is used for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal.
7. a target BS, is characterized in that, comprising: receiving element and unit,
Described receiving element, for receiving a ROHC contextual information;
Described unit, for learning a described ROHC contextual information, obtains the 2nd ROHC contextual information.
8. target BS according to claim 7, is characterized in that, a described ROHC contextual information, for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal,
Described 2nd ROHC contextual information, for target BS and mutual the used ROHC contextual information of user terminal, described 2nd ROHC contextual information comprises: described target BS and mutual the second the used traffic stream identifier of described user terminal, described target BS and mutual the second the used stream identification of described user terminal, described target BS and mutual the 2nd the used ROHC operational mode of described user terminal, described target BS and mutual the second the used compression end of described user terminal conciliate the state of pressure side, described target BS and mutual the second the used static context of described user terminal and described target BS and mutual the second the used dynamic context of described user terminal.
9. target BS according to claim 8, is characterized in that, described unit specifically for:
The operational mode of self and mutual the 2nd the used ROHC of described user terminal is chosen as a described ROHC operational mode;
The condition selecting that pressure side is conciliate in self and mutual the second the used compression end of described user terminal is the state that described first compression end conciliates pressure side;
Described first static context is carried out the differentiation of Business Stream as self and mutual the second the used static context of described user terminal;
Described first dynamic context is carried out compression and decompression process as self and mutual the second the used dynamic context of described user terminal;
According to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal are set.
10. target BS according to claim 9, it is characterized in that, described unit arranges self and mutual the second the used traffic stream identifier of described user terminal and self and mutual the second the used stream identification of described user terminal according to the oneself state of described first traffic stream identifier, described first stream identification and described target BS, comprising:
Described unit obtains according to the oneself state of described first traffic stream identifier and described target BS the first traffic stream identifier that described target BS supports from described first traffic stream identifier, and with described target BS to support and as described target BS and mutual the second the used traffic stream identifier of described user terminal together with the traffic stream identifier that do not comprise of described first traffic stream identifier;
From described first traffic stream identifier, obtain according to the oneself state of described first stream identification and described target BS the first stream identification that described target BS supports, and with described target BS to support and as described target BS and mutual the second the used stream identification of described user terminal together with the stream identification that do not comprise of described first stream identification.
11. 1 kinds of source base stations, is characterized in that, comprising: transmitting element, for sending a ROHC contextual information.
12. source base stations according to claim 11, is characterized in that, a described ROHC contextual information is used for source base station and mutual the used ROHC contextual information of user terminal, a described ROHC contextual information comprises: described source base station and mutual the first the used traffic stream identifier of described user terminal, described source base station and mutual the first the used stream identification of described user terminal, described source base station and mutual the used ROHC operational mode of described user terminal, described source base station and mutual the first the used compression end of described user terminal conciliate the state of pressure side, described source base station and mutual the first the used static context of described user terminal and described source base station and mutual the first the used dynamic context of described user terminal.
13. 1 kinds, based on the switched system of robustness header compression ROHC agreement, is characterized in that, described system comprises:
Target BS described in any one of claim 7 to 10 and the source base station described in claim 11 or 12.
Priority Applications (3)
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| CN201310664981.5A CN104703230A (en) | 2013-12-09 | 2013-12-09 | ROHC (robust header compression-based) protocol-based switching method, device and system |
| JP2016557171A JP6422504B2 (en) | 2013-12-09 | 2014-06-17 | Switching method, source base station, target base station, system, storage medium |
| PCT/CN2014/080111 WO2015085741A1 (en) | 2013-12-09 | 2014-06-17 | Switching method, source base station, target base station, system and storage medium |
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| CN201310664981.5A CN104703230A (en) | 2013-12-09 | 2013-12-09 | ROHC (robust header compression-based) protocol-based switching method, device and system |
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| US11589281B2 (en) | 2018-10-26 | 2023-02-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and apparatus for distinguishing between data formats, and communication device |
| US11785517B2 (en) | 2018-10-26 | 2023-10-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and apparatus for distinguishing between data formats, and communication device |
| CN114071622A (en) * | 2019-04-30 | 2022-02-18 | 华为技术有限公司 | Data processing method, communication device and system |
| CN114071622B (en) * | 2019-04-30 | 2024-06-11 | 华为技术有限公司 | A data processing method, communication device and system |
| US12452729B2 (en) | 2019-04-30 | 2025-10-21 | Huawei Technologies Co., Ltd. | Data processing method, and communication apparatus and system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015085741A1 (en) | 2015-06-18 |
| JP6422504B2 (en) | 2018-11-14 |
| JP2017503449A (en) | 2017-01-26 |
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