CN108076481A - A kind of method for the access cluster multi call that lags for terminal - Google Patents
A kind of method for the access cluster multi call that lags for terminal Download PDFInfo
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- CN108076481A CN108076481A CN201610988758.XA CN201610988758A CN108076481A CN 108076481 A CN108076481 A CN 108076481A CN 201610988758 A CN201610988758 A CN 201610988758A CN 108076481 A CN108076481 A CN 108076481A
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- compression
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The present invention provides a kind of method for lagging for terminal and accessing cluster multi call, the CP that this method is included in base station ENB performs following steps：When detect terminal lag access cluster multi call event after, the access procedure that lags for completing the terminal is cooperateed with the UP of the base station ENB；After the UP sends the first message for the access procedure completion that lags described in expression to the terminal, send the compression side's state for safeguarding the UP to the UP and migrated by current compression stable state to the second message of compression original state.The access procedure that lags initiated by ENB, UP compression sides state is migrated by compression stable state to compression original state, it just can be decompressed successfully at the first time after business datum so as to be received in terminal access cluster multi call, avoid de-compression failure that loss data influence is caused to lag access speed.
Description
Technical field
The present invention relates to mobile communication technology field, the side of more particularly to a kind of access cluster multi call that lags for terminal
Method.
Background technology
In LTE group systems, PDCP agreements are right to the PDCP SDU institutes in group-calling service using ROHC head compression technologies
The IP series heads answered are compressed processing.
ROHC basic principles are：Using the changing rule of various different fields in IP series heads, and according to changing rule
Difference classifies to these fields；Most digital section is all indeclinable in a stream, after initial transmission is completed
It can directly reduce and not be put into compressed packet, only a small number of fields can constantly change, it is necessary to using compaction coding method, into
And determine the selection of compressed packet type.
In general, compression side selects IR messages under compression original state (IR states), and in group-calling service, in order to obtain
Better compression ratio, compression side select UO-0 messages into after compressing stable state (SO states).
And for decompressor, receive decompression IR messages first, when decompressing IR messages can by decompression result come
Context is established, and preserves header reference information；When reception UO-0 messages unzip it, using the context of foundation as base
Plinth, the increment information for the middle carrying that joins message, so as to decompress original message.
But group-calling service is unidirectional downlink, feedback-less channel, therefore, ROHC can only be transported under U patterns (unidirectional mode)
Row.In this way, when ROHC is run in u mode, without feedback method for treating, in the prior art, in order to ensure compression method
Robustness, make decompressor (or recipient) can correct decompression, carry out periodical report compression side (or sender)
Head update processing is compression side's periodically migration compressive state.
In this way, as shown in Figure 1, group system lags after access timer expiry, base station exhales foundation please in transmission group of eating dishes without rice or wine
Message is sought, cluster UE is made to carry out midway in group-calling service and adds in cluster multi call, if at this point, as shown in Fig. 2, compression side is in SO states
Lower transmission UO-0 messages, and the cluster UE for newly adding in cluster multi call establishes complete context not yet, can cause decompression should
The decompression failure of UO-0 messages.The new UE for adding in cluster combination need to wait until that the side of compression periodically returns to transmission IR messages under IR states
Afterwards, IR messages are decompressed, and establish context could successfully unzip it.However compression side's a cycle SO states under
All data of the IR state phases of a cycle, the new UE for adding in cluster can de-compression failure and abandon, UE is caused to lag
Access can not the group-calling service of uppick in time, time delay is excessive, influence user perceive.
In view of this, the present invention in view of the above-mentioned problems, provide it is a kind of for terminal lag access cluster multi call method,
It lags the speed of access so as to improve cluster UE, the phenomenon that eliminating decompression failure and abandon data, improves cluster user and perceive.
The content of the invention
The present invention provides a kind of methods for lagging for terminal and accessing cluster multi call, pass through the access that lags that ENB is initiated
Process, the UP compression sides state of base station ENB are migrated by compression stable state to compression original state, so as to after terminal accesses
Success can be decompressed at the first time, and de-compression failure is avoided to cause to lose data influence and lag access speed.
The present invention provides a kind of method for lagging for terminal and accessing cluster multi call, this method is included in base station ENB's
CP performs following steps：
When detect terminal lag access cluster multi call event after, completion end cooperate with the UP of the base station ENB
The access procedure that lags at end；
After the UP sends the first message for the access procedure completion that lags described in expression to the terminal, sent out to the UP
It send the compression side's state for safeguarding the UP and second disappearing to compression original state is migrated by current compression stable state
Breath.
Optionally, lagged by detection and access whether timer occurs time-out, it is determined whether there is terminal to lag and access cluster
The event that group is exhaled occurs.
Optionally, the first message is Trunking Paging message and Group Call Config message.
Optionally, by the way that the RRM of base station ENB is called to send the second message.
Optionally, the second message is the ROHC compression sides state initialization instruction message that the UP is safeguarded.
The present invention also provides a kind of method for lagging for terminal and accessing cluster multi call, this method is included in base station ENB
UP perform following steps：
When the CP with the base station ENB cooperate with complete terminal lag access procedure when, to the terminal send represent institute
State the first message for the access procedure completion that lags；
After the first message is sent to the terminal, the second message that the CP is sent is received and according to described the
Two message are migrated compression side's state of maintenance to compression original state by current compression stable state.
Optionally, the first message is Trunking Paging message and Group Call Config message.
Optionally, the second message is by the way that the RRM of base station ENB is called to send by the CP.
Optionally, the second message is the ROHC compression sides state initialization instruction message that the UP is safeguarded.
Optionally, this method further comprises performing following steps in the UP of base station ENB：
It, will be for access cluster multi call after compression side's state is migrated by compression stable state to compression original state
The CO messages for the compressed data that terminal is sent are switched to IR messages；
After the quantity of the IR messages continuously transmitted reaches predetermined value, by compression side's state of maintenance as at the beginning of current compression
Beginning state transition is to compressing stable state；
It, will be for access cluster multi call after compression side's state is migrated by compression original state to compression stable state
The IR messages for the compressed data that terminal is sent are switched to CO messages.
Description of the drawings
Fig. 1 lags for terminal in the prior art accesses the schematic diagram of cluster multi call；
Fig. 2 be in the prior art terminal lag access cluster multi call after Compression Processor schematic diagram；
Fig. 3 is the flow chart that method provided by the invention is performed in the CP of base station ENB；
Fig. 4 is the flow chart that method provided by the invention is performed in the UP of base station ENB；
Fig. 5 lags for terminal provided in an embodiment of the present invention accesses the schematic diagram of cluster multi call；
Fig. 6 be terminal provided in an embodiment of the present invention lag access cluster multi call after Compression Processor schematic diagram.
Specific embodiment
It is right in the following with reference to the drawings and specific embodiments in order to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in detail.
According to Fig. 1 and Fig. 2, in LTE group systems, group-calling service uses the decompressor of ROHC head compression technologies
During method, when compressing original state, when decompression is encapsulated in the compressed data in IR messages, established by its decompression result
Hereafter, so as to preserve original header reference information in the decompression side of terminal, under uncompressed original state, reduction treatment compression
During data, it is necessary to dependent on original header reference information in context.In this way, the decompression side of terminal is receiving other compression reports
During compressed data in text, based on the context, processing can be correctly unziped it.
Under uncompressed original state, compressed data is encapsulated in CO messages, wherein CO messages can be UO-0 messages,
Any in UO-1 messages, UO-1-ID messages, UO-1-TS messages, UOR-2 messages, UOR-2-ID messages, UOR-2-TS messages
Kind.Generally use UO-0 messages, are illustrated by taking UO-0 messages as an example in a specific embodiment, when the other messages of transmission
When, it can refer to the scheme by taking UO-0 messages as an example.
It lags provided by the present invention for terminal and accesses the method for cluster multi call as shown in figure 3, Fig. 3 is provided by the invention
The flow chart that method is performed in the CP of base station ENB.
The CP that this method is included in base station ENB performs following steps：
301st, when detect terminal lag access cluster multi call event after, cooperate with the UP of the base station ENB completion institute
State the access procedure that lags of terminal；
In the present invention, base station ENB is used as compression side, including CP and UP.Terminal UE is used as decompression side.It is in group
It is unidirectional down channel to exhale in business, feedback-less channel.In group-calling service, lag access there are colony terminal UE, midway plus
Enter the event of group-calling service.CP and UP is needed to cooperate with terminal UE lags access group calling business, compression side can be received and sent out
The message sent.
302nd, when the UP send to the terminal represent described in lag access procedure completion first message after, to described
UP sends to be migrated by current compression stable state to compressing the of original state for the compression side state of safeguarding the UP
Two message.
In a particular embodiment, UP is sent to terminal represents the first message that access procedure is completed that lags, and afterwards, CP is immediately
To UP send second message so that UP safeguard compression side's state migrated by current compression stable state it is initial to compression side
State.In this way, compression side can be made to enter compression original state, i.e., send IR messages under IR states, the terminal accessed before and late
The terminal accessed afterwards receives IR messages, so as to make all terminals can the successful decompression compressed data IR messages, and
And complete context is established by its decompression result, for decompression UO-0 messages or other messages basis is provided, accurately into
Row decompression.
The terminal that can be improved in cluster group by above-mentioned steps 301 and step 302 lags the speed of access, and it is whole to improve cluster
The perception at end.
In the present invention, the compression side that UP is safeguarded is ROHC, and corresponding decompression side is the ROHC of terminal.
It is shown in Figure 5, for LTE group systems, repeat above-mentioned steps 301 and step 302, by slow in terminal
After accessing afterwards, triggering compression side is migrated to compressing original state, and then, the terminal for the access that can make to lag is established above and below decompressor
Text decompresses successfully, avoids packet loss phenomenon caused by de-compression failure at the first time.
The event of cluster multi call is accessed as detecting that terminal lags in step 301, specifically, by detecting the access that lags
Whether timer occurs time-out, it is determined whether has terminal to lag and accesses the event of cluster multi call.When the access timer that lags
Time-out sends first message, and the terminal for alloing midway into cluster group receives service message, and then completes the access that lags
Process.
Wherein, first message is Trunking Paging message and Group Call Config message.
After UP sends out first message, CP sends second message to UP immediately, that is to say, that sending first message will eventually
End adds in group-calling service, after terminal can be made to receive message, makes compression side by current compression stable state by second message
It migrates to compression original state, in the case where compressing original state, the transmission of compression direction decompressor can be such that decompressor directly decompresses
The IR messages of compressed data, and establish the context that decompression basis is provided.
It is by the way that the RRM of CP is called to be sent to compression side for the method for the transmission second message in step 302.It should
Second message is ROHC compression sides state initialization instruction message, and the second message can be RRM_UP_ in a particular embodiment
PDCP_INIT_CSTATE_IND message.The message is for notifying the compression side ROHC that UP is safeguarded by state by current compression
Stable state is migrated to compression original state.
For the UP of base station ENB, as shown in figure 4, this method is additionally included in the following steps performed thereon：
401st, when the CP with the base station ENB cooperate with complete terminal lag access procedure when, to the terminal send table
Show the first message of the access procedure completion that lags；
402nd, after the first message is sent to the terminal, the second message that the CP is sent is received and according to institute
Second message is stated to migrate compression side's state of maintenance to compression original state by current compression stable state.
It is corresponding with the step 301 of the CP execution in base station ENB and 302 for step 401 and step 402.
Similarly, first message is Trunking Paging message and Group Call Config message.Second message
It is by calling the ROHC compression sides state initialization instruction message that the RRM of base station ENB is sent by the CP.Second message is specific
Can be RRM_UP_PDCP_INIT_CSTATE_IND message.
This method further comprises performing following steps in the UP of base station ENB：
403rd, after compression side's state is migrated by compression stable state to compression original state, will be used for access cluster group
The UO-0 messages for the compressed data that the terminal exhaled is sent are switched to IR messages；
404th, after the quantity of the IR messages continuously transmitted reaches predetermined value, by compression side's state of maintenance by current pressure
Contracting original state is migrated to compression stable state；
In the present invention, the quantity of the IR messages of transmission is five, and all terminals can be made to receive the IR messages, and
And establish complete context.It can be set for predetermined value according to actual conditions, the present invention does not limit specifically.
405th, after compression side's state is migrated by compression original state to compression stable state, will be used for access cluster group
The IR messages for the compressed data that the terminal exhaled is sent are switched to UO-0 messages.
It illustrates to lag provided by the present invention for terminal with reference to a kind of specific embodiment that attached drawing 6 provides and accesses cluster multi call
Method.
As shown in fig. 6, base station ENB UP safeguard ROHC compression sides beginning when, in the case where compressing original state, to
Terminal UE 1 that addition group is exhaled sends five IR messages, after successful decompression, establishes context.Then, compression side is steady into compression
Determine state, the UO-0 messages of compressed data sent to terminal UE 1, it is more than 1 decompressor of terminal UE hereafter based on, decompressed
Contracting.
When terminal UE 2 lags access, the compression side ROHC that the UP of base station ENB is safeguarded is by its state by compression stable state
It migrates to compression original state, in this way, compression side ROHC enters compression original state, and continuously transmits five IR messages, makes end
End UE1 and terminal UE 2 can be unziped it successfully, and establish context simultaneously；After five IR messages have been sent, enter
Stable state is compressed, and then UO-0 messages, on the basis of context has been established, terminal are sent to terminal UE 1 and terminal UE 2
UE2 can decompress success at the first time.
In this way, compared with the prior art shown in Fig. 2, effectively prevent terminal UE 2 and the new cycle is waited to enter compression just
The process of beginning state, but by by compression side migrate back pressure contracting original state, make terminal UE 2 in the access procedure that lags as early as possible
Uppick group-calling service.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God and any modification, equivalent substitution, improvement and etc. within principle, done, should be included within the scope of protection of the invention.
Claims (10)
- A kind of 1. method for the access cluster multi call that lags for terminal, which is characterized in that the CP that this method is included in base station ENB is held Row following steps：When detect terminal lag access cluster multi call event after, the completion terminal cooperate with the UP of the base station ENB Lag access procedure；After the UP sends the first message for the access procedure completion that lags described in expression to the terminal, send and use to the UP It is migrated in the compression side's state for safeguarding the UP by current compression stable state to the second message of compression original state.
- 2. according to the method described in claim 1, it is characterized in that, by detection lag access timer whether time-out occurs, It determines whether that terminal lags and accesses the event generation of cluster multi call.
- 3. according to the method described in claim 1, it is characterized in that, the first message for Trunking Paging message and Group Call Config message.
- 4. according to the method described in claim 1, it is characterized in that, disappeared by the way that the RRM of base station ENB is called to send described second Breath.
- 5. according to the method described in claim 4, it is characterized in that, the second message is the ROHC compression sides that the UP is safeguarded State initialization instruction message.
- A kind of 6. method for the access cluster multi call that lags for terminal, which is characterized in that the UP that this method is included in base station ENB is held Row following steps：When the CP with the base station ENB cooperate with complete terminal lag access procedure when, to the terminal send represent it is described late The first message that access procedure is completed afterwards；After the first message is sent to the terminal, receive the second message that the CP is sent and disappear according to described second Breath is migrated compression side's state of maintenance to compression original state by current compression stable state.
- 7. according to the method described in claim 6, it is characterized in that, the first message for Trunking Paging message and Group Call Config message.
- 8. according to the method described in claim 6, it is characterized in that, the second message is by calling base station by the CP What the RRM of ENB was sent.
- 9. according to the method described in claim 8, it is characterized in that, the second message is the ROHC compression sides that the UP is safeguarded State initialization instruction message.
- 10. the method according to any one of claim 6 to 9, which is characterized in that this method further comprises in base station The UP of ENB performs following steps：When compression side's state by compression stable state migrate to compression original state after, by for access cluster multi call terminal The CO messages of the compressed data of transmission are switched to IR messages；After the quantity of the IR messages continuously transmitted reaches predetermined value, by compression side's state of maintenance by current compression initial shape State is migrated to compression stable state；When compression side's state by compression original state migrate to compression stable state after, by for access cluster multi call terminal The IR messages of the compressed data of transmission are switched to CO messages.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610988758.XA CN108076481B (en) | 2016-11-10 | 2016-11-10 | Method for terminal to access cluster group calling later |
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| CN201610988758.XA CN108076481B (en) | 2016-11-10 | 2016-11-10 | Method for terminal to access cluster group calling later |
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Cited By (2)
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| CN111866969A (en) * | 2019-04-30 | 2020-10-30 | 华为技术有限公司 | Data processing method, communication device and system |
| CN113314128A (en) * | 2021-05-27 | 2021-08-27 | 哈尔滨海能达科技有限公司 | Delayed access method, device and system for voice service and related products |
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