CN101938802B - Method and device for switching first wireless network into second wireless network - Google Patents
Method and device for switching first wireless network into second wireless network Download PDFInfo
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- CN101938802B CN101938802B CN200910151581.8A CN200910151581A CN101938802B CN 101938802 B CN101938802 B CN 101938802B CN 200910151581 A CN200910151581 A CN 200910151581A CN 101938802 B CN101938802 B CN 101938802B
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Abstract
The invention provides a method for switching a first wireless network into a second wireless network, wherein the first wireless network comprises a first adaptive multi-rate (AMR) aggregation, and the second wireless network comprises a second adaptive multi-rate (AMR) aggregation. The method comprises the following steps of: transmitting a switch request message to a wireless access network element of the second wireless network; and calculating whether the two AMR aggregations have a public aggregation on the basis of the AMR aggregation of the first wireless network and the AMR aggregation of the second wireless network, and if so, the AMR aggregation of the first wireless network is regulated according to the public aggregation.
Description
Technical field
The present invention relates to field of wireless communication, more specifically, relate to a kind of method of switching from the first wireless network to second wireless network and device.
Background technology
2G (second generation mobile communication system) GSM network has developed for many years in China, there is a national GSM network well covered in China Mobile, the construction of current GSM network is quite ripe, there is good spreadability and stability, the voice service of high-quality can be provided, future can be still good speech business bearer network, and this is very valuable resource.On the other hand, along with the continuous maturation of 3G (3-G (Generation Three mobile communication system)) technology, the quickening of commercial process, and the progressively promotion and application in the whole world, 3G network with its higher availability of frequency spectrum, and can provide the business of more abundant personality to have been widely recognized.Relative to 2G system, 3G network is having greatly improved in the support of data service, and for mobile Web access, audio stream, video flowing, and the support of IP multimedia call etc. is all more perfect.So 2G and 3G coexistence of systems will be a kind of long-standing situation.
Have a standard interface Iur-g between 2G and 3G wireless access system in 3GPP international standard protocol, this interface does not support the transmission of user service data information.Under the background of current 2G and 3G coexistence of systems, in particularly being switched by the voice of 3G to 2G, by Iur-g transmission user business datum, it is very necessary to improve load balancing between handover success rate guarantee system.
There is the method for the business data transmission between a kind of wireless access system at present.By the interface Iur-g between the wireless access network element BSC/BTS of wireless access network element RAN and 2G of 3G, transmission user business datum, specifically comprises following content:
RNC reports according to the measurement of terminal and carries out switching preparation by Iur-g interface notification BSC, and comprising the port numbers forwarding user face data between BSC and RNC, BSC distributes interface-free resources and determines that port numbers can be ready to complete with returning switching to RNC afterwards.Port numbers by having consulted after RNC receives success response message carries out the transparent forwarding of data.
In 2G system, AMR speed is divided into half rate AMR and full rate AMR, BSC can determine to use full rate AMR or half rate AMR according to the situation of eat dishes without rice or wine signal quality or cell transmit power.In 3G system, system also can according to the speed of the penetration quality dynamic adjustment AMR voice of eating dishes without rice or wine.Therefore, when carrying out 2/3G switching by Iur-g, likely there is the unmatched problem of AMR speed set that 2G and 3G system can be supported, causing one-way voice in handoff procedure.
Summary of the invention
The present invention is by providing a kind of method switched from the first wireless network to second wireless network to solve to carry out the one-way voice problem handoff procedure.
The invention provides a kind of method switched from the first wireless network to second wireless network, wherein, first wireless network has the first adaptive multi-rate (AMR) set, second wireless network has the second adaptive multi-rate (AMR) set, and the method comprises the following steps: the wireless access network element to second wireless network sends handover request message; Based on the AMR set of the first wireless network and the AMR set of second wireless network, calculate whether there is common set therebetween; If there is common set, then gather according to the AMR of common set incompatible adjustment first wireless network.
Wherein, further comprising the steps of: between the first wireless network and second wireless network, to carry out transmission user business datum by the Iur-g interface between the wireless access network element of the first Radio Access Network and the wireless access network element of the second Radio Access Network.
Wherein, the wireless access network element of the first wireless network performs and sends handover request message to second wireless network, and carry the AMR set of the first wireless network in handover request message, the wireless access network element of second wireless network performs the step calculating common set.
Wherein, after sending the step of handover request message to the wireless access network element of described second wireless network, further comprising the steps of: the wireless access network element of second wireless network sends switching to the wireless access network element of the first wireless network and is ready to complete message, wherein, switch the AMR set being ready to complete in message and carrying second wireless network, the wireless access network element of the first wireless network performs the step calculating common set.
Wherein, in the step of AMR adjusting the first wireless network according to common set, specifically comprise the following steps: send the Iu rate control message carrying common set information to core net; Core net adjusts the AMR set of the first wireless network.
Wherein, if there is no common set, then arrange vocoder in the wireless access network element of second wireless network, with the AMR set of the AMR set or second wireless network that are provided the first wireless network by vocoder.
Wherein, if wireless access network element from the wireless access network element of second wireless network to the first wireless network send switching be ready to complete message, then switching be ready to complete in message the information of carrying and being provided with vocoder.
Wherein, the first wireless network is 3G wireless network, and second wireless network is 2G wireless network.
Present invention also offers a kind of device switched from the first wireless network to second wireless network, this device comprises: transmitting element, and the wireless access network element to second wireless network sends handover request message; Computing unit, calculates between the AMR set of the first wireless network and the AMR set of second wireless network whether there is common set; Adjustment unit, adjusts the AMR set of the first wireless network according to common set.
Wherein, this device also comprises vocoder, for the AMR set of the AMR of the first wireless network set or second wireless network being supplied to second wireless network when there is not common set.
According to the present invention, utilize the common set between first network and second network, efficiently solve AMR when two wireless networks switch and gather unmatched problem, therefore avoid the one-way voice in handoff procedure.
It is noted that the description and the following detailed description are all exemplary, be intended for the requested to provide further explanation of the invention.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, other object, characteristic sum effect of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the overall flow figure of method of the present invention;
Fig. 2 shows the flow chart according to the present invention first method;
Fig. 3 shows the flow chart according to the present invention second method.
Fig. 4 shows according to device of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
The present invention is described with the switching of 3G network to 2G network.
Fig. 1 shows the overall flow figure of method of the present invention.As shown in Figure 1, method according to the present invention mainly comprises the following steps: by the wireless access network element transmission handover request message of described Iur-g interface to described 2G wireless network; By wireless access network element from described Iur-g interface to described 3G wireless network send switching be ready to complete message; Described switching is ready to complete in message gathers with the adaptive multi-rate (AMR) of described 2G wireless network, or gather with the AMR of described 3G wireless network in described handover request message, or described switching is ready to complete in message and described handover request message all with the AMR set of described 2G wireless network or the AMR set of described 3G wireless network; Calculate described 3G wireless network AMR set and described 2G wireless network AMR gather whether there is common set; If there is described common set, then described common set is sent to core net; Described core net is based on the AMR set of received message adjustment 3G wireless network.
Introduce respectively below according to two kinds of diverse ways of the present invention.
Fig. 2 shows the flow chart according to the present invention first method.As shown in Figure 2, first, radio network controller (RNC) sends Iur-g handover preparation request by Iur-g interface to base station controller (BSC), carries the current AMR set used of RNC in message, such as { AMR 12.2K, AMR 10.2K, AMR 7.95K, AMR 7.4K, AMR6.7K, AMR 5.9K, AMR 5.15K, AMR 4.75K}.
Afterwards, BSC, according to Current resource situation, judges the AMR using this user to use in 2G system, such as { AMR 6.7K, AMR 5.9K, AMR 5.15K, AMR4.75K}.BSC prepares by sending to RNC to switch AMR set that response message carries its use.
RNC gets its speed set supported and the BTS speed set common set of distributing, and { AMR 6.7K, AMR 5.9K, AMR 5.15K, AMR 4.75K} sends to core net as the actual speed rate set of Iur-g speech frame.In one embodiment, the rate set composition and division in a proportion common set speed used due to RNC wants large, RNC sends IU RATECONTROL message (saving Iu Rate Controlprocedure process see 3gpp 25.415 6.5.3) to core net, indicates { AMR 6.7K, AMR 5.9K in message, AMR 5.15K, AMR 4.75K} allows to use, { AMR 12.2K, AMR 10.2K, AMR 7.95K, AMR 7.4K} prohibits the use.
Core net receives the RATE CONTROL message of the IUUP that RNC initiates according to it, adjusts suitable voice rate to meet the demand of RNC.In one embodiment, core net sends the RATE CONTROL ACK of IUUP to RNC, and the follow-up voice rate issued of core net is { in AMR 6.7K, AMR 5.9K, AMR 5.15K, AMR 4.75K} set.
Fig. 3 shows the flow chart according to the present invention second method.As shown in Figure 3, first, RNC sends Iur-g handover preparation request by Iur-g interface to BSC, carries the current AMR set used of RNC in message, such as { AMR 12.2K, AMR 10.2K, AMR 7.95K, AMR 7.4K, AMR 6.7K, AMR 5.9K, AMR 5.15K, AMR 4.75K}.
Afterwards, BSC is according to Current resource situation, judge the AMR using this user to use in 2G system, such as { AMR 6.7K, AMR 5.9K, AMR 5.15K, AMR 4.75K}, if according to resource status, BSC judges that the speed set that the set of AMR speed and RNC support does not exist common set, then BSC insertion vocoder carries out AMR rate transition.BSC carries whether insert vocoder by sending switching preparation response message to RNC.
RNC detects to switch and prepares response message BSC insertion vocoder, then process terminates, without the need to carrying out rate control process between core net.
Fig. 4 shows according to device of the present invention.As shown in the figure, according to the inventive system comprises: transmitting element, the wireless access network element to 2G network sends handover request message; Computing unit, calculates between the AMR set of 3G network and the AMR set of 2G network whether there is common set; Adjustment unit, according to the AMR set of common set adjustment 3G network.In addition, this device also comprises vocoder, when there is not common set, this vocoder is inserted into the wireless access network element of 2G network, so that the AMR set of the AMR of 3G network set or 2G network is supplied to 2G network.
These are only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (7)
1. the method switched from the first wireless network to second wireless network, described first wireless network has the first adaptive multi-rate (AMR) set, described second wireless network has the second adaptive multi-rate (AMR) set, it is characterized in that, said method comprising the steps of:
Wireless access network element to described second wireless network sends handover request message;
Based on the AMR set of described first wireless network and the AMR set of described second wireless network, calculate and there is common set therebetween;
AMR according to described first wireless network of the incompatible adjustment of described common set gathers;
Wherein, described first wireless network is 3G wireless network, described second wireless network is 2G wireless network, if there is no described common set, then vocoder is set in the wireless access network element of described second wireless network, with the AMR set of the AMR set or described second wireless network that are provided described first wireless network by described vocoder.
2. method according to claim 1, it is characterized in that, further comprising the steps of: between described first wireless network and described second wireless network, to carry out transmission user business datum by the Iur-g interface between the wireless access network element of described first Radio Access Network and the wireless access network element of described second Radio Access Network.
3. method according to claim 1, is characterized in that:
The wireless access network element of described first wireless network performs and sends described handover request message to described second wireless network, carries the AMR set of described first wireless network in described handover request message,
The wireless access network element of described second wireless network performs the step calculating described common set.
4. method according to claim 1, is characterized in that: after sending the step of handover request message to the wireless access network element of described second wireless network, further comprising the steps of:
The wireless access network element of described second wireless network sends switching to the wireless access network element of described first wireless network and is ready to complete message, and wherein, described switching is ready to complete in message the AMR set carrying described second wireless network,
The wireless access network element of described first wireless network performs the step calculating described common set.
5. method according to claim 1, is characterized in that, in the step of the AMR according to described first wireless network of common set adjustment, specifically comprises the following steps:
The Iu rate control message carrying described common set information is sent to core net;
The AMR set of described first wireless network of described core net adjustment.
6. method according to claim 1, it is characterized in that, if the wireless access network element of described second wireless network is ready to complete message to the wireless access network element transmission switching of described first wireless network, be then ready to complete in message the information of carrying and being provided with described vocoder in described switching.
7. the device switched from the first wireless network to second wireless network, is characterized in that, described device comprises:
Transmitting element, the wireless access network element to described second wireless network sends handover request message;
Computing unit, calculates between the AMR set of described first wireless network and the AMR set of described second wireless network whether there is common set;
Adjustment unit, according to the AMR set of described first wireless network of described common set adjustment;
Vocoder, for being supplied to described second wireless network when there is not described common set by the AMR set of the AMR of described first wireless network set or described second wireless network;
Wherein, described first wireless network is 3G wireless network, and described second wireless network is 2G wireless network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910151581.8A CN101938802B (en) | 2009-07-02 | 2009-07-02 | Method and device for switching first wireless network into second wireless network |
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| CN200910151581.8A CN101938802B (en) | 2009-07-02 | 2009-07-02 | Method and device for switching first wireless network into second wireless network |
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| CN101938802A CN101938802A (en) | 2011-01-05 |
| CN101938802B true CN101938802B (en) | 2015-05-20 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20200138293A (en) | 2018-03-30 | 2020-12-09 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Switching method and access network device |
| CN109743761B (en) * | 2019-03-07 | 2021-03-26 | 北京西米兄弟未来科技有限公司 | Wireless network switching method, device and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1115217A2 (en) * | 2000-01-07 | 2001-07-11 | Lucent Technologies Inc. | A method for interleaving of full rate channels suitable for half duplex operation and statistical multiplexing |
| CN1832616A (en) * | 2005-03-07 | 2006-09-13 | 华为技术有限公司 | Switchover method between system of mobile communication service |
| CN101378521A (en) * | 2007-08-29 | 2009-03-04 | 中国移动通信集团公司 | Method and system for implementing encode/decode-free operation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1115217A2 (en) * | 2000-01-07 | 2001-07-11 | Lucent Technologies Inc. | A method for interleaving of full rate channels suitable for half duplex operation and statistical multiplexing |
| CN1832616A (en) * | 2005-03-07 | 2006-09-13 | 华为技术有限公司 | Switchover method between system of mobile communication service |
| CN101378521A (en) * | 2007-08-29 | 2009-03-04 | 中国移动通信集团公司 | Method and system for implementing encode/decode-free operation |
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