CN102340822A - Method of uplink data transmission in optimization cell reselection process and terminal thereof - Google Patents
Method of uplink data transmission in optimization cell reselection process and terminal thereof Download PDFInfo
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Abstract
The invention relates to the communication technology field and discloses a method of uplink data transmission in an optimization cell reselection process and a terminal thereof. The method comprises the following steps that: before cell reselection is needed to be performed, subnetwork dependence converage protocol (SNDCP) layer enters into a reselection mode; the SNDCP layer adjusts a byte length used by a data segment and performs segmentation to a application layer data packet which needs to be transmitted according to the adjusted byte length, wherein the adjusted byte length is less than the byte length used by the SNDCP layer which performs the segmentation to the application layer data packet before adjusting; the SNDCP layer transmits a protocol data unit (PDU) generated through the segmentation to a logical link control (LLC) layer; after processing the received PDU, the LLC layer transmits the processed PDU to a bottom link so that the bottom link divides the PDU into blocks and transmits to the network; By using the method of the invention, the data which needs to be transmitted repeatedly because of data transmission interruption in the cell reselection process can be reduced. Time from the interruption to recovery can be shortened.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of method and terminal of optimizing transmitting uplink data in the cell reselection process.
Background technology
3GPP (3rd Generation Partnership Project in ESTI (ETSI) regulation; Third generation partner program) GPRS (the General Packet Radio Service under the definition; General packet radio service)/EGPRS (Enhanced Data Rate for GSM Evolution; The enhanced data rates for gsm evolution technology) is a kind of transitional technology from GSM to 3G; It mainly is in gsm system, to have adopted a kind of new modulator approach, promptly state-of-the-art multi-slot operation and 8PSK modulation technique.The basic framework and the protocol architecture of GPRS/EGPRS network are as shown in Figure 1.Under this network, it is as shown in Figure 2 that the basic procedure of transfer of data is carried out at the terminal.
Wherein, SNDCP (Subnetwork Dependence Converage Protocol, subnet are correlated with convergence protocol) layer receives TCP (the Transmission Control Protocol of application layer; Transmission control protocol) packet is put into transmit queue with the tcp data bag that receives, if SNDCP can send data; Then from transmit queue, take out first tcp data bag; It is segmented into one or more LLC PDU (Protocol Data Unit, protocol Data Unit), gives LLC (Logical Link Control with it then; Logic link control) layer; The LLC layer is given RLC (Radio Link Control, Radio Link control) layer with it after handling PDU, and rlc layer sends to network after with the PDU piecemeal.
In the prior art, when under the GPRS EDGE network, carrying out transfer of data, if run into district reselecting, have the interruption on the transfer of data, after the district reselecting success, data are in new cell recovery transmission.Consider the integrality of transfer of data, need the LLC frame that has not sent before the district reselecting be retransmitted in new sub-district.Like this, the data of sending in new sub-district might have more repetition, make that the time from interrupting to recovering is longer, not only can have a strong impact on user's impression, and can produce considerable influence to Upper Level Network Protocol performances such as TCP/IP.
Summary of the invention
The embodiment of the invention provides a kind of method and terminal of optimizing transmitting uplink data in the cell reselection process, to reduce in the cell reselection process because the data that the transfer of data interruption need repeat to send in new sub-district shorten the time from interrupting to recovering.
For this reason, the embodiment of the invention provides following technical scheme:
A kind of method of optimizing transmitting uplink data in the cell reselection process comprises:
Before needs carried out district reselecting, the SNDCP layer got into the gravity treatment pattern;
The byte length that SNDCP layer adjustment data sementation adopts; According to adjusted byte length the application layer data bag that needs send is carried out segmentation, the byte length that said adjusted byte length adopts when less than the preceding SNDCP layer of adjustment said application layer data bag being carried out segmentation;
The SNDCP layer sends the PDU that segmentation generates to the LLC layer;
The LLC layer sends the bottom link to after the PDU that receives is handled, so that the bottom link sends its piecemeal to network.
Alternatively, said before needs carry out district reselecting, the SNDCP layer gets into the gravity treatment pattern and comprises:
When having adjacent cell signal strength value stronger than this cell signal strength value, the SNDCP layer gets into the gravity treatment pattern; Perhaps
When adjacent cell signal strength parameters C 2 was arranged than this cell signal strength parameters C the last 2, the SNDCP layer got into the gravity treatment pattern; Perhaps
When adjacent cell signal strength parameters C 32 was arranged than this cell signal strength parameters C Final 32, the SNDCP layer got into the gravity treatment pattern.
Alternatively, said before needs carry out district reselecting, the SNDCP layer gets into the gravity treatment pattern and comprises:
Adjacent cell signal value is stronger than this cell signal value having, and this state duration is when surpassing the scheduled time, and the SNDCP layer gets into the gravity treatment pattern; Perhaps
Adjacent cell signal strength parameters C 2 is being arranged than this cell signal strength parameters C the last 2, and this state duration is when surpassing the scheduled time, the SNDCP layer gets into the gravity treatment pattern; Perhaps
Adjacent cell signal strength parameters C 32 is being arranged than this cell signal strength parameters C Final 32, and this state duration is when surpassing the scheduled time, the SNDCP layer gets into the gravity treatment pattern.
Alternatively, the said scheduled time is confirmed by following mode:
The said scheduled time is greater than 0, and less than the steady state value of 5s; Perhaps
Upstream physical layer coded system according to current network is distributed is confirmed; Perhaps
Current upstream rate according to the LLC layer is measured is confirmed.
Alternatively, said adjusted byte length is confirmed by following mode:
Setting adjusted byte length is steady state value; Perhaps
Upstream physical layer coded system according to current network is distributed is confirmed; Perhaps
Current upstream rate according to the LLC layer is measured is confirmed.
Preferably, said method also comprises:
After district reselecting finished, the SNDCP layer withdrawed from the gravity treatment pattern;
After the SNDCP layer withdrawed from the gravity treatment pattern, the SNDCP layer carried out segmentation according to the preceding byte length of adjustment to the application layer data bag that needs send.
Preferably, said district reselecting finishes and comprises: district reselecting success and district reselecting failure, and said district reselecting failure comprises: data service can't be carried out in new sub-district; Perhaps adjacent cell signal strength value fails to reach reselection conditions in reselection evaluation condition official hour.
A kind of terminal comprises:
SNDCP layer processing module is used for before needs carry out district reselecting, gets into the gravity treatment pattern; And after getting into the gravity treatment pattern, the byte length that the adjustment data sementation adopts carries out segmentation according to adjusted byte length to the application layer data bag that needs send, and the PDU that segmentation is generated sends LLC layer processing module to; The byte length that said adjusted byte length adopts when less than adjustment is preceding said application layer data bag being carried out segmentation;
LLC layer processing module is used for sending the bottom link to after the PDU processing that receives, so that the bottom link sends its piecemeal to network.
Alternatively, said SNDCP layer processing module specifically is used for when meeting the following conditions, getting into the gravity treatment pattern:
There is adjacent cell signal strength value stronger than this cell signal strength value; Perhaps
Adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2; Perhaps
Adjacent cell signal strength parameters C 32 is than this cell signal strength parameters C Final 32.
Alternatively, said SNDCP layer processing module specifically is used for when meeting the following conditions, getting into the gravity treatment pattern:
Have adjacent cell signal value stronger, and this state duration surpass the scheduled time than this cell signal value; Perhaps
Adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2, and this state duration surpasses the scheduled time; Perhaps
Adjacent cell signal strength parameters C 32 is arranged than this cell signal strength parameters C Final 32, and this state duration surpasses the scheduled time.
Preferably, SNDCP layer processing module also is used for after district reselecting finishes, withdrawing from the gravity treatment pattern, and after withdrawing from the gravity treatment pattern, according to the byte length before the adjustment application layer data bag that needs send carried out segmentation.
Preferably, said district reselecting finishes and comprises: district reselecting success and district reselecting failure, and said district reselecting failure comprises: data service can't be carried out in new sub-district; Perhaps adjacent cell signal strength value fails to reach reselection conditions in reselection evaluation condition official hour.
The embodiment of the invention is optimized the method and the terminal of transmitting uplink data in the cell reselection process; To upstream data; The SNDCP layer adopts dynamic data sementation length; Before needs carried out district reselecting, the SNDCP layer got into the gravity treatment pattern, the byte length that SNDCP layer adjustment data sementation adopts; According to setting byte length the application layer data bag that receives is carried out segmentation, said setting byte length is less than the byte length that carries out adopting when the SNDCP layer carries out segmentation to said application layer data bag before the district reselecting; And the PDU that segmentation is generated sends the LLC layer to; The LLC layer sends the bottom link to after the PDU that receives is handled, so that the bottom link sends its piecemeal to network.Thereby the data that need repeat to send in new sub-district in the minimizing cell reselection process shorten the time from interrupting to recovering.
Description of drawings
In order to be illustrated more clearly in the technical scheme that the present invention implements; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the basic framework and the protocol architecture sketch map of GPRS/EGPRS network in the prior art;
Fig. 2 is the basic flow sheet that the GPRS/EGPRS network lower terminal carries out transfer of data in the prior art;
Fig. 3 is the flow chart that the embodiment of the invention is optimized the method for transmitting uplink data in the cell reselection process;
Fig. 4 is the data sementation transfer process figure that uses the method for the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention is optimized the method and the terminal of transmitting uplink data in the cell reselection process; In cell reselection process in the prior art, in order to keep the integrality of transfer of data, the LLC PDU that need before new sub-district is with former district reselecting, not distribute retransmits in new sub-district; Thereby make the data of sending to produce more repetition in new sub-district; Make and interrupt long problem recovery time, SNDCP adopts dynamic data sementation length, before needs carry out district reselecting; The SNDCP layer gets into the gravity treatment pattern; The byte length that SNDCP layer adjustment data sementation adopts carries out segmentation according to setting byte length to the application layer data bag that receives, and said setting byte length is less than the byte length that carries out adopting when the SNDCP layer carries out segmentation to said application layer data bag before the district reselecting; And the PDU that segmentation is generated sends the LLC layer to; The LLC layer sends the bottom link to after the PDU that receives is handled, so that the bottom link sends its piecemeal to network.Thereby the data that need repeat to send in new sub-district in the minimizing cell reselection process shorten the time from interrupting to recovering.
As shown in Figure 3, be the flow chart that the embodiment of the invention is optimized the method for transmitting uplink data in the cell reselection process, may further comprise the steps:
That is to say; After the SNDCP layer gets into the gravity treatment pattern; Need carry out segmentation to the application layer data bag that needs send according to the shorter new byte length of the byte length that adopts before; Resend the data volume minimizing that LLC that former sub-district do not passed wraps like this in new sub-district, new data can be sent quickly, and then make the time delay that transfer of data is interrupted owing to district reselecting reduce.
Particularly, said adjusted byte length can be confirmed by following mode:
(1) setting adjusted byte length is steady state value;
According to the 3GPP consensus standard, SNDCP PDU can not surpass the N201 parameter of LLC, if surpass, must carry out segmentation.Said N201 parameter can be that terminal and network side are consulted to confirm, can be default value also, is generally 1520 bytes.Therefore, can set adjusted byte length is 140 bytes.
The upstream physical layer coded system of (2) distributing according to current network is confirmed;
In the GRPS/EGPRS network, have usually CS-1, CS-2, CS-3, CS-4, MCS-1, MCS-2 ..., several kinds of physical layer encodes modes of MCS-9, in embodiments of the present invention, can confirm adjusted byte length according to the mode of following table 1.
Table 1:
| Coded system | Nreslect |
| CS-1 | 140 bytes |
| CS-2 | 220 bytes |
| CS-3 | 240 bytes |
| CS-4 | 330 bytes |
| MCS-1 | 140 bytes |
| MCS-2 | 180 bytes |
| MCS-3 | 230 bytes |
| MCS-4 | 280 bytes |
| MCS-5 | 350 bytes |
| MCS-6 | 460 bytes |
| MCS-7 | 700 bytes |
| MCS-8 | 860 bytes |
| MCS-9 | 930 bytes |
(3) the current upstream rate V0 that measures according to the LLC layer confirms that adjusted byte length Nreslect specifically can set as follows:
0KBytes/S＜V0＜20KBytes/S, then Nreslect=140 byte;
20KBytes/S＜V0＜60KBytes/S, then Nreslect=280 byte;
60KBytes/S＜V0＜120Kbytes/S, then Nreslect=600 byte;
120Kbytes/S＜V0, then Nreslect=1520 byte.
In order to reduce the data that need repeat to send in new sub-district in the cell reselection process effectively, need before district reselecting, make the SNDCP layer accomplish the adjustment of the byte length that the data segmentation is adopted; For this reason; In embodiments of the present invention, can select different SNDCP layers to get into the time point of gravity treatment pattern according to application need; Specifically can there be following several kinds, only need choose wherein a kind of getting final product in the practical application.
(1) when having adjacent cell signal strength value stronger than this cell signal strength value, the SNDCP layer gets into the gravity treatment pattern;
In practical application, can monitor the signal strength signal intensity of this sub-district and adjacent sub-district in real time, in case satisfy above-mentioned condition, the SNDCP layer promptly gets into the gravity treatment pattern.
(2) when adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2, the SNDCP layer gets into the gravity treatment pattern;
(3) when adjacent cell signal strength parameters C 32 is arranged than this cell signal strength parameters C Final 32, the SNDCP layer gets into the gravity treatment pattern.
Above-mentioned C2 is identical with definition of the prior art with C32, specifically can be referring to the related protocol standard.It is through series of parameters, mainly contains the signal strength signal intensity of this sub-district and adjacent sub-district, and the side-play amount of sub-district etc. calculates.
Need to prove that C2 is the parameter that network has only CCCH (Common Control Channel, CCCH) and BCCH (Broadcast Control Channel, BCCH) to adopt, and is the general parameter of GSM and GPRS, on BCCH, broadcasts; And C32 PBCCH (the Packet Broadcast Control Channel that has been network design; Packet Broadcast Control CHannel) and PCCCH (Packet Common Control Channel; Packet Common Control CHannel) parameter that adopts the time belongs to the proprietary parameter of GPRS, on PBCCH, broadcasts.
In practical application, can monitor above-mentioned series of parameters in real time, in case satisfy above-mentioned condition, the SNDCP layer promptly gets into the gravity treatment pattern.
In embodiments of the present invention; After the SNDCP layer gets into the gravity treatment pattern, need the byte length that segmentation is adopted be shortened, owing to need add protocol header to the PDU after the segmentation; This can increase header overhead undoubtedly; In order to reduce this influence, avoid unnecessary adjustment, then need select the SNDCP layer to get into the preferable time point of gravity treatment pattern.For this reason, when whether definite SNDCP layer gets into the gravity treatment pattern, a timer T0 can be set, satisfy above-mentioned condition after, start timer T0, if the said condition of T0 run duration satisfies always, then T0 overtime after, stop T0, the SNDCP layer does not get into the gravity treatment pattern; Otherwise the SNDCP layer gets into the gravity treatment pattern.The timing of T0 can be more than or equal to 0, and less than the number of 5s, such as T0=3 or T0=2 are set.
Certainly, the timing of T0 also can be definite according to the current upstream rate V0 that the LLC layer is measured, such as:
0KBytes/S＜V0＜20KBytes/S, then T0=0s;
20KBytes/S＜V0＜60KBytes/S, then T0=2s;
60KBytes/S＜V0＜120Kbytes/S, then T0=3s;
120Kbytes/S＜V0, then T0=4s.
In addition, the timing of T0 can also be confirmed according to the up coded system of the physical layer of network allocation, such as as shown in table 2 below.
Table 2:
| Coded system | T0 |
| CS-1 | 0s |
| CS-2 | 0s |
| CS-3 | 0s |
| CS-4 | 0s |
| MCS-1 | 2s |
| MCS-2 | 2s |
| MCS-3 | 2s |
| MCS-4 | 2s |
| MCS-5 | 3s |
| MCS-6 | 3s |
| MCS-7 | 4s |
| MCS-8 | 4s |
| MCS-9 | 4s |
After district reselecting finishes; The SNDCP layer can keep using adjusted byte length that the application layer data that needs send is carried out segmentation; Certainly; The SNDCP layer also can withdraw from the gravity treatment pattern, and after the SNDCP layer withdrawed from the gravity treatment pattern, the SNDCP layer carried out segmentation according to the preceding byte length of adjustment to the application layer data bag that receives.
It can be the district reselecting success that said district reselecting finishes, and also can be the district reselecting failure.District reselecting failure is exactly can't be resident in new sub-district, can't be synchronously, can't initiate business, particularly, can be that data service can't be carried out in new sub-district; Perhaps adjacent cell signal strength value fails to reach reselection conditions etc. in reselection evaluation condition official hour.
It is thus clear that; The embodiment of the invention is optimized the method for transmitting uplink data in the cell reselection process; Adopt dynamic data sementation length that the application layer data that needs send is carried out segmentation by SNDCP; Reduce the data that need repeat to send in new sub-district in the cell reselection process effectively, shorten the time from interrupting to recovering.
Use the concrete data sementation transfer process of the method for the embodiment of the invention below in conjunction with Fig. 4 further explain.
In this flow process, suppose common mode segmentation employing N201 parameter, be 1520 bytes; Adjusted segmentation byte length is Nreslect, and Nreslect is less than N201.
This flow process mainly may further comprise the steps:
1) the SNDCP layer carries out segmentation to application layer data sent N-PDU, supposes that the common mode segmentation adopts the N201 parameter, is 1520 bytes, and the SNDCP layer adds the SND-PDU that becomes 1520 bytes after the head portion with segment data, sends to the LLC layer.After having sent the N-PDU on a upper strata, the N-PDU that SNDCP layer buffer memory is follow-up.
2) the LLC layer carries out the processing that LLC itself needs to the SNDCP PDU data that receive, and forms LLC-FRAME-1, sends to rlc layer.
3) rlc layer carries out segmentation to LLC-FRAME-1; Form several RLC-BLK; Send to more low layer, so that it sends to sub-district 1 on interface aloft, when the figure exemplified sends to RLC-BLK numbering sn=3; The rlc layer opposite end of receiving network cell 1 acknowledges receipt of, and then rlc layer continues to send the bag of RLC-BLK numbering sn=4.
4) GPRS-RR (Radio Resource, Radio Resource) management level are found the stronger adjacent sub-district of signal, open the T0 timer, and behind the timer expiry, notice SNDCP layer gets into the gravity treatment pattern.
5) after the SNDCP layer gets into the gravity treatment pattern, the N-PDU data of buffer memory are carried out segmentation according to the Nreselect byte.
6) RLC-BLK that comprises LLC-FRAME-1 notifies the SNDCP layer can continue to send the SN-PDU according to the Nreselect segmentation to LLC after sending and finishing and receive that the opposite end rlc layer is confirmed this moment, is 140 bytes among the figure.
7) after the LLC layer is received some SN-PDU, it is handled the back generates LLC-FRAME-2,, LLC-FRAME-3 or the like, continue to send to rlc layer.
8) rlc layer continues to send RLC-BLK according to the sn numbering, sends and accomplishes the RLC-BLK that comprises LLC-FRAME-2.
9) district reselecting begins, and rlc layer stops to send data on sub-district 1.
10) after the gravity treatment success, RR notice SNDCP layer withdraws from the gravity treatment pattern, and the notice rlc layer recovers to send data.
11) rlc layer never sends the LLC-FRAME-2 that finishes and begins on sub-district 2, to resend the RLC-BLK that comprises LLC-FRAME-2, and confirms parameters such as RLC-BLK length again by the configuration of new sub-district, and sn renumbers since 0.
12) after SNDCP withdraws from the gravity treatment pattern, buffered data N-PDU is carried out segmentation by the N201 parameter.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
Correspondingly, the embodiment of the invention also provides a kind of terminal, and this terminal comprises: SNDCP layer processing module and LLC layer processing module.Wherein:
SNDCP layer processing module is used for before needs carry out district reselecting, gets into the gravity treatment pattern; And after getting into the gravity treatment pattern, the byte length that the adjustment data sementation adopts carries out segmentation according to adjusted byte length to the application layer data bag that needs send, and the PDU that segmentation is generated sends LLC layer processing module to; The byte length that said adjusted byte length adopts when less than adjustment is preceding said application layer data bag being carried out segmentation;
LLC layer processing module is used for sending the bottom link to after the PDU processing that receives, so that the bottom link sends its piecemeal to network.
Alternatively, said SNDCP layer processing module specifically is used for when meeting the following conditions, getting into the gravity treatment pattern:
There is adjacent cell signal strength value stronger than this cell signal strength value; Perhaps
Adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2; Perhaps
Adjacent cell signal strength parameters C 32 is than this cell signal strength parameters C Final 32.
Alternatively, said SNDCP layer processing module specifically is used for when meeting the following conditions, getting into the gravity treatment pattern:
Have adjacent cell signal value stronger, and this state duration surpass the scheduled time than this cell signal value; Perhaps
Adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2, and this state duration surpasses the scheduled time; Perhaps
Adjacent cell signal strength parameters C 32 is arranged than this cell signal strength parameters C Final 32, and this state duration surpasses the scheduled time.
The terminal of the embodiment of the invention; Adopt dynamic data sementation length that the application layer data that needs send is carried out segmentation by SNDCP layer processing module; Thereby can reduce the data that need repeat to send in new sub-district in the cell reselection process effectively, shorten the time from interrupting to recovering.
Can repeat no more at this with reference to the description in the method for the front embodiment of the invention to the process of transmitting of upstream data in the terminal of the embodiment of the invention.
After district reselecting finished, the SNDCP layer can keep using adjusted byte length that the application layer data that needs send is carried out segmentation, and certainly, the SNDCP layer also can withdraw from the gravity treatment pattern.For this reason, in embodiments of the present invention, said SNDCP layer processing module also is used for after district reselecting finishes, withdrawing from the gravity treatment pattern, and after withdrawing from the gravity treatment pattern, according to the byte length before the adjustment application layer data bag that needs send carried out segmentation.Said district reselecting finishes and comprises: district reselecting success and district reselecting failure, and said district reselecting failure comprises: data service can't be carried out in new sub-district; Perhaps adjacent cell signal strength value fails to reach reselection conditions in reselection evaluation condition official hour.
More than the embodiment of the invention has been carried out detailed introduction, used embodiment among this paper the present invention set forth, the explanation of above embodiment just is used for help understanding method of the present invention and terminal; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a method of optimizing transmitting uplink data in the cell reselection process is characterized in that, comprising:
Before needs carried out district reselecting, the SNDCP layer got into the gravity treatment pattern;
The byte length that SNDCP layer adjustment data sementation adopts; According to adjusted byte length the application layer data bag that needs send is carried out segmentation, the byte length that said adjusted byte length adopts when less than the preceding SNDCP layer of adjustment said application layer data bag being carried out segmentation;
The SNDCP layer sends the PDU that segmentation generates to the LLC layer;
The LLC layer sends the bottom link to after the PDU that receives is handled, so that the bottom link sends its piecemeal to network.
2. the method for claim 1 is characterized in that, and is said before needs carry out district reselecting, and the SNDCP layer gets into the gravity treatment pattern and comprises:
When having adjacent cell signal strength value stronger than this cell signal strength value, the SNDCP layer gets into the gravity treatment pattern; Perhaps
When adjacent cell signal strength parameters C 2 was arranged than this cell signal strength parameters C the last 2, the SNDCP layer got into the gravity treatment pattern; Perhaps
When adjacent cell signal strength parameters C 32 was arranged than this cell signal strength parameters C Final 32, the SNDCP layer got into the gravity treatment pattern.
3. the method for claim 1 is characterized in that, and is said before needs carry out district reselecting, and the SNDCP layer gets into the gravity treatment pattern and comprises:
Adjacent cell signal value is stronger than this cell signal value having, and this state duration is when surpassing the scheduled time, and the SNDCP layer gets into the gravity treatment pattern; Perhaps
Adjacent cell signal strength parameters C 2 is being arranged than this cell signal strength parameters C the last 2, and this state duration is when surpassing the scheduled time, the SNDCP layer gets into the gravity treatment pattern; Perhaps
Adjacent cell signal strength parameters C 32 is being arranged than this cell signal strength parameters C Final 32, and this state duration is when surpassing the scheduled time, the SNDCP layer gets into the gravity treatment pattern.
4. method as claimed in claim 3 is characterized in that, the said scheduled time is confirmed by following mode:
The said scheduled time is greater than 0, and less than the steady state value of 5s; Perhaps
Upstream physical layer coded system according to current network is distributed is confirmed; Perhaps
Current upstream rate according to the LLC layer is measured is confirmed.
5. like each described method of claim 1 to 3, it is characterized in that said adjusted byte length is confirmed by following mode:
Setting adjusted byte length is steady state value; Perhaps
Upstream physical layer coded system according to current network is distributed is confirmed; Perhaps
Current upstream rate according to the LLC layer is measured is confirmed.
6. like each described method of claim 1 to 3, it is characterized in that said method also comprises:
After district reselecting finished, the SNDCP layer withdrawed from the gravity treatment pattern;
After the SNDCP layer withdrawed from the gravity treatment pattern, the SNDCP layer carried out segmentation according to the preceding byte length of adjustment to the application layer data bag that needs send.
7. like each described method of claim 1 to 3, it is characterized in that said district reselecting finishes and comprises: district reselecting success and district reselecting failure, said district reselecting failure comprises: data service can't be carried out in new sub-district; Perhaps adjacent cell signal strength value fails to reach reselection conditions in reselection evaluation condition official hour.
8. a terminal is characterized in that, comprising:
SNDCP layer processing module is used for before needs carry out district reselecting, gets into the gravity treatment pattern; And after getting into the gravity treatment pattern, the byte length that the adjustment data sementation adopts carries out segmentation according to adjusted byte length to the application layer data bag that needs send, and the PDU that segmentation is generated sends LLC layer processing module to; The byte length that said adjusted byte length adopts when less than adjustment is preceding said application layer data bag being carried out segmentation;
LLC layer processing module is used for sending the bottom link to after the PDU processing that receives, so that the bottom link sends its piecemeal to network.
9. terminal as claimed in claim 8 is characterized in that, said SNDCP layer processing module specifically is used for when meeting the following conditions, getting into the gravity treatment pattern:
There is adjacent cell signal strength value stronger than this cell signal strength value; Perhaps
Adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2; Perhaps
Adjacent cell signal strength parameters C 32 is than this cell signal strength parameters C Final 32.
10. terminal as claimed in claim 8 is characterized in that, said SNDCP layer processing module specifically is used for when meeting the following conditions, getting into the gravity treatment pattern:
Have adjacent cell signal value stronger, and this state duration surpass the scheduled time than this cell signal value; Perhaps
Adjacent cell signal strength parameters C 2 is arranged than this cell signal strength parameters C the last 2, and this state duration surpasses the scheduled time; Perhaps
Adjacent cell signal strength parameters C 32 is arranged than this cell signal strength parameters C Final 32, and this state duration surpasses the scheduled time.
11. like each described terminal of claim 8 to 10, it is characterized in that,
SNDCP layer processing module also is used for after district reselecting finishes, withdrawing from the gravity treatment pattern, and after withdrawing from the gravity treatment pattern, according to the byte length before the adjustment application layer data bag that needs send carried out segmentation.
12., it is characterized in that said district reselecting finishes and comprises like each described terminal of claim 8 to 10: district reselecting success and district reselecting failure, said district reselecting failure comprises: data service can't be carried out in new sub-district; Perhaps adjacent cell signal strength value fails to reach reselection conditions in reselection evaluation condition official hour.
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| US10117150B2 (en) | 2013-03-29 | 2018-10-30 | Xi'an Zhongxing New Software Co. Ltd. | Mobility optimization method, user equipment and access network device |
| CN109690973A (en) * | 2016-09-13 | 2019-04-26 | 高通股份有限公司 | Neighbor cell lists in satellite communication system |
| CN110881205A (en) * | 2018-09-05 | 2020-03-13 | 维沃移动通信有限公司 | Terminal residing method, information transmission method, terminal and network equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10117150B2 (en) | 2013-03-29 | 2018-10-30 | Xi'an Zhongxing New Software Co. Ltd. | Mobility optimization method, user equipment and access network device |
| CN109690973A (en) * | 2016-09-13 | 2019-04-26 | 高通股份有限公司 | Neighbor cell lists in satellite communication system |
| CN109690973B (en) * | 2016-09-13 | 2021-05-28 | 高通股份有限公司 | Neighbor cell list in satellite communication system |
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| CN110881205A (en) * | 2018-09-05 | 2020-03-13 | 维沃移动通信有限公司 | Terminal residing method, information transmission method, terminal and network equipment |
| CN110881205B (en) * | 2018-09-05 | 2021-03-16 | 维沃移动通信有限公司 | Terminal residing method, information transmission method, terminal and network equipment |
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