CN114466417B - Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE - Google Patents

Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE Download PDF

Info

Publication number
CN114466417B
CN114466417B CN202210121194.5A CN202210121194A CN114466417B CN 114466417 B CN114466417 B CN 114466417B CN 202210121194 A CN202210121194 A CN 202210121194A CN 114466417 B CN114466417 B CN 114466417B
Authority
CN
China
Prior art keywords
base station
handover
target
transparent container
handover request
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210121194.5A
Other languages
Chinese (zh)
Other versions
CN114466417A (en
Inventor
龚翼
刘依
卿晓松
卜智勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
Original Assignee
Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Zhongke Micro Information Technology Research Institute Co Ltd filed Critical Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
Priority to CN202210121194.5A priority Critical patent/CN114466417B/en
Publication of CN114466417A publication Critical patent/CN114466417A/en
Application granted granted Critical
Publication of CN114466417B publication Critical patent/CN114466417B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Abstract

The invention provides a method for improving execution efficiency in the process of switching a UE from an NR base station to an LTE base station, a switching method and the UE. In Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE Message redesigned by the invention, the code stream after the coding of the HANDOVER COMMAND signaling is not carried any more, but the code stream after the coding of the DL-DCCH-Message is carried, so that the time delay in the switching process of the UE can be effectively reduced, the system overhead can be effectively reduced when a plurality of UEs fall back at the same time, and the fall back failure caused by overlarge system overhead is avoided.

Description

Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for improving execution efficiency in a process of switching a UE from an NR base station to an LTE base station, a switching method, and a UE.
Background
The 3GPP wireless system 38.413, 36.413 and 36.331 defines the signaling flow of UE from NR base station to LTE base station, firstly, NR base station initiates HANDOVER REQUIRED signaling to 5GC (5G core network) to indicate UE to need to switch from NR base station to LTE base station, 5GC initiates switching to corresponding EPC, EPC converts HANDOVER REQUIRED signaling into HANDOVER REQUEST to LTE base station, LTE base station processes, returns the re-synchronization information needed by UE to EPC through HANDOVER REQUEST ACKNOWLEDG message, EPC converts the message into HANDOVER COMMAND signaling to return to source NR base station.
Target to Source Transparent Container cells carried in the HANDOVER COMMAND signaling are relevant information for the UE prepared by the LTE base station to resynchronize to the LTE base station. After receiving the Target to Source Transparent Container cell, the NR base station needs to perform ASN decoding on the Target to Source Transparent Container cell according to a manner in a 36.331 protocol to obtain a HANDOVER COMMAND signaling, where the HANDOVER COMMAND signaling carries a complete DL-DCCH-Message (carrying an RRCConnectionReconfiguration cell), and the NR base station needs to re-encode the DL-DCCH-Message, and then brings the encoded code stream to the UE through a mobile from nrcommand to complete fallback from the NR base station to the LTE base station. This approach suffers from the following problems:
the NR base station does not actually care about its content for the rrcconnectionreconfigurationcell carried by the LTE base station to the UE, so it is not necessary to decode it at all, and recoding it, which leads to an increase in system overhead, and has a significant impact on system efficiency in a multi-user simultaneous fallback scenario.
Disclosure of Invention
The invention aims to provide a method and a switching method for improving the execution efficiency of UE (user equipment) in the process of switching from an NR (radio resource) base station to an LTE (Long term evolution) base station, and the UE, so as to solve the problem of repeated coding and decoding of RRCConnection reconfiguration in the process of switching the UE from the NR base station to the LTE base station, thereby improving the time efficiency of the UE in the process of switching from the NR base station to the LTE base station and reducing the system overhead.
The method for improving the execution efficiency in the process of switching the UE from the NR base station to the LTE base station comprises the following steps:
by redesigning Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE message, efficiency of execution in the handover of the UE from the NR base station to the LTE base station is improved.
Further, target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message do not carry the encoded stream of HANDOVER COMMAND signaling, but carry the encoded stream of DL-DCCH-Message.
Further, the method for redesigning Target to Source Transparent Container cells in HANDOVER REQUEST ACKNOWLEDGE message is as follows:
when preparing Target to Source Transparent Container cell, the LTE base station does not use the format of HANDOVER COMMAND signaling to encode, but directly ASN encodes DL-DCCH-Message containing RRCConnectionReconfiguration cell, and puts it in Target to Source Transparent Container cell, and takes it to EPC through HANDOVER REQUEST ACKNOWLEDGE Message.
Further, when the UE switches from the NR base station to the LTE base station, after receiving the HANDOVER COMMAND signaling, the NR base station does not perform ASN decoding on the Target to Source Transparent Container cell any more, but directly transmits the corresponding code stream to the UE.
The invention also provides a switching method of the UE from the NR base station to the LTE base station, which comprises the following steps:
s1, an NR base station initiates HANDOVER REQUIRED signaling to a 5GC, the UE is indicated to be required to be switched from the NR base station to an LTE base station, the 5GC initiates switching to a corresponding EPC, and the EPC converts HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends the HANDOVER REQUEST to the LTE base station;
s2, after the LTE base station finishes processing, the re-synchronization information required by the UE is returned to the EPC through HANDOVER REQUEST ACKNOWLEDG information, and the EPC converts HANDOVER REQUEST ACKNOWLEDG information into a HANDOVER COMMAND signaling and returns the HANDOVER COMMAND signaling to the source NR base station; wherein the HANDOVER REQUEST ACKNOWLEDG message carries a redesigned Target to Source Transparent Container cell; target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message carry the coded code stream of the DL-DCCH-Message;
and S3, after receiving Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE Message, the NR base station brings a code stream carried by the Target to Source Transparent Container cells and encoded by the DL-DCCH-Message to the UE so as to complete the switching of the UE from the NR base station to the LTE base station.
The invention also provides the UE, which adopts the switching method to switch from the NR base station to the LTE base station.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
in Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE Message redesigned by the invention, the code stream after the coding of the HANDOVER COMMAND signaling is not carried any more, but the code stream after the coding of the DL-DCCH-Message is carried. Thus, after receiving the HANDOVER COMMAND signaling, the NR base station does not perform ASN decoding on the Target to Source Transparent Container cell any more, but directly transmits the corresponding code stream to the UE. Therefore, unnecessary ASN coding and decoding processes are reduced, so that time delay in the switching process of the UE can be effectively reduced, system overhead can be effectively reduced in a multi-UE simultaneous fallback scene, and fallback failure caused by overlarge system overhead is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of 3gpp 38.413 protocol definitions HANDOVER REQUIRED and HANDOVER COMMAND messages.
Fig. 2 is a 3gpp 36.413 protocol defined HANDOVER REQUEST and HANDOVER REQUEST ACKNOWLEDGE message flow diagram.
Fig. 3 is a schematic diagram of 3gpp 36.331 protocol handle command definition.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 and fig. 2, this embodiment proposes a method for improving execution efficiency in a process of switching a UE from an NR base station to an LTE base station, where the method is as follows:
by redesigning Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE message, efficiency of execution in the handover of the UE from the NR base station to the LTE base station is improved.
Still further, the method of redesigning Target to Source Transparent Container cells in HANDOVER REQUEST ACKNOWLEDGE message is:
as shown in fig. 3, when preparing Target to Source Transparent Container cells, the LTE base station does not use the format of HANDOVER COMMAND signaling to encode any more, but directly ASN-encodes the DL-DCCH-Message containing RRCConnectionReconfiguration cells, and puts it in Target to Source Transparent Container cells, and takes it to EPC through HANDOVER REQUEST ACKNOWLEDGE messages.
Thus, target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message no longer carry the encoded stream of HANDOVER COMMAND signaling, but carry the encoded stream of DL-DCCH-Message messages. Then, when the UE switches from the NR base station to the LTE base station, after receiving the HANDOVER COMMAND signaling, the NR base station does not perform ASN decoding on the Target to Source Transparent Container cell any more, but directly transmits the corresponding code stream to the UE. Therefore, unnecessary ASN coding and decoding processes are reduced, so that time delay in the UE switching process can be effectively reduced, system overhead can be effectively reduced in a multi-UE simultaneous fallback scene (switching from an NR base station to an LTE base station), and fallback failure caused by overlarge system overhead is avoided.
Example 2
Based on the method for improving the execution efficiency in the process of switching the UE from the NR base station to the LTE base station described in embodiment 1, as shown in fig. 1, this embodiment proposes a method for switching the UE from the NR base station to the LTE base station, including the following steps:
s1, an NR base station initiates HANDOVER REQUIRED signaling to a 5GC, the UE is indicated to be required to be switched from the NR base station to an LTE base station, the 5GC initiates switching to a corresponding EPC, and the EPC converts HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends the HANDOVER REQUEST to the LTE base station;
s2, after the LTE base station finishes processing, the re-synchronization information required by the UE is returned to the EPC through HANDOVER REQUEST ACKNOWLEDG information, and the EPC converts HANDOVER REQUEST ACKNOWLEDG information into a HANDOVER COMMAND signaling and returns the HANDOVER COMMAND signaling to the source NR base station; wherein the HANDOVER REQUEST ACKNOWLEDG message carries a redesigned Target to Source Transparent Container cell; target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message carry the coded code stream of the DL-DCCH-Message;
and S3, after receiving Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE Message, the NR base station brings a code stream carried by the Target to Source Transparent Container cells and encoded by the DL-DCCH-Message to the UE so as to complete the switching of the UE from the NR base station to the LTE base station.
Example 3
The embodiment proposes a UE, which is characterized in that the UE adopts the handover method described in embodiment 2 to perform handover from an NR base station to an LTE base station, and specifically includes the following steps:
s1, an NR base station initiates HANDOVER REQUIRED signaling to a 5GC, the UE is indicated to be required to be switched from the NR base station to an LTE base station, the 5GC initiates switching to a corresponding EPC, and the EPC converts HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends the HANDOVER REQUEST to the LTE base station;
s2, after the LTE base station finishes processing, the re-synchronization information required by the UE is returned to the EPC through HANDOVER REQUEST ACKNOWLEDG information, and the EPC converts HANDOVER REQUEST ACKNOWLEDG information into a HANDOVER COMMAND signaling and returns the HANDOVER COMMAND signaling to the source NR base station; wherein the HANDOVER REQUEST ACKNOWLEDG message carries a redesigned Target to Source Transparent Container cell; target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message carry the coded code stream of the DL-DCCH-Message;
and S3, after receiving Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE Message, the NR base station brings a code stream carried by the Target to Source Transparent Container cells and encoded by the DL-DCCH-Message to the UE so as to complete the switching of the UE from the NR base station to the LTE base station.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. A method for improving execution efficiency in a process of switching a UE from an NR base station to an LTE base station is characterized by comprising the following steps:
by redesigning Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE message, the execution efficiency in the process of switching the UE from the NR base station to the LTE base station is improved;
in Target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message, the code stream after coding of the HANDOVER COMMAND signaling is not carried any more, but the code stream after coding of the DL-DCCH-Message;
the method of redesigning Target to Source Transparent Container cells in HANDOVER REQUEST ACKNOWLEDGE message is:
when the LTE base station prepares Target to Source Transparent Container cells, the LTE base station does not use the format of the HANDOVER COMMAND signaling to encode any more, but directly carries out ASN encoding on DL-DCCH-Message information containing RRCConnection reconfiguration cells, then puts the encoded DL-DCCH-Message information into Target to Source Transparent Container cells, and brings the encoded DL-DCCH-Message information to EPC through HANDOVER REQUEST ACKNOWLEDGE information;
when the UE is switched from the NR base station to the LTE base station, after the NR base station receives the HANDOVER COMMAND signaling, the ASN decoding is not carried out on Target to Source Transparent Container cells, and the corresponding code stream is directly transmitted to the UE.
2. A method for switching UE from an NR base station to an LTE base station, comprising the steps of:
s1, an NR base station initiates HANDOVER REQUIRED signaling to a 5GC, the UE is indicated to be required to be switched from the NR base station to an LTE base station, the 5GC initiates switching to a corresponding EPC, and the EPC converts HANDOVER REQUIRED signaling into a HANDOVER REQUEST and sends the HANDOVER REQUEST to the LTE base station;
s2, after the LTE base station finishes processing, the re-synchronization information required by the UE is returned to the EPC through HANDOVER REQUEST ACKNOWLEDG information, and the EPC converts HANDOVER REQUEST ACKNOWLEDG information into a HANDOVER COMMAND signaling and returns the HANDOVER COMMAND signaling to the source NR base station; wherein the HANDOVER REQUEST ACKNOWLEDG message carries a redesigned Target to Source Transparent Container cell; target to Source Transparent Container cells in the redesigned HANDOVER REQUEST ACKNOWLEDGE Message carry the coded code stream of the DL-DCCH-Message;
and S3, after receiving Target to Source Transparent Container cells in the HANDOVER REQUEST ACKNOWLEDGE Message, the NR base station brings a code stream carried by the Target to Source Transparent Container cells and encoded by the DL-DCCH-Message to the UE so as to complete the switching of the UE from the NR base station to the LTE base station.
3. A UE, characterized in that the UE performs handover from an NR base station to an LTE base station using the handover method according to claim 2.
CN202210121194.5A 2022-02-09 2022-02-09 Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE Active CN114466417B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210121194.5A CN114466417B (en) 2022-02-09 2022-02-09 Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210121194.5A CN114466417B (en) 2022-02-09 2022-02-09 Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE

Publications (2)

Publication Number Publication Date
CN114466417A CN114466417A (en) 2022-05-10
CN114466417B true CN114466417B (en) 2024-03-19

Family

ID=81413385

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210121194.5A Active CN114466417B (en) 2022-02-09 2022-02-09 Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE

Country Status (1)

Country Link
CN (1) CN114466417B (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873665A (en) * 2009-04-22 2010-10-27 大唐移动通信设备有限公司 Evolutionary Home NB local network type processing method and device
CN101877878A (en) * 2009-04-30 2010-11-03 中兴通讯股份有限公司 Cross-net element switching method and system
CN102036328A (en) * 2009-09-30 2011-04-27 中兴通讯股份有限公司 Method and system for processing unsuccessful business preparation during S1 switching
CN102550080A (en) * 2009-09-30 2012-07-04 瑞典爱立信有限公司 Methods and arrangements in a mobile telecommunication system
CN102761983A (en) * 2012-07-09 2012-10-31 中兴通讯股份有限公司 Method and device for reestablishing radio link
CN103168493A (en) * 2010-10-13 2013-06-19 阿尔卡特朗讯公司 In-sequence delivery of upstream user traffic during handover
WO2017193940A1 (en) * 2016-05-11 2017-11-16 中兴通讯股份有限公司 Inter-base station switching method and device
KR20180127191A (en) * 2017-05-19 2018-11-28 한국전자통신연구원 Handover method in mobile communication system
CN109429288A (en) * 2017-06-28 2019-03-05 大唐移动通信设备有限公司 The processing method of E-RAB establishment process and the concurrent scene of across base station handoff procedure
CN109874155A (en) * 2017-12-01 2019-06-11 大唐移动通信设备有限公司 A kind of cell switching method and base station
CN111052795A (en) * 2017-09-28 2020-04-21 中兴通讯股份有限公司 Method and system for exchanging messages in a wireless network
KR20200115328A (en) * 2019-03-28 2020-10-07 삼성전자주식회사 Method and apparatus for handover in a next generation mobile communication system
CN113810964A (en) * 2020-06-13 2021-12-17 华为技术有限公司 Communication method and device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018144758A1 (en) * 2017-02-02 2018-08-09 Intel IP Corporation Generation node-b (gnb), user equipment (ue) and methods for handover based on multi-connectivity in new radio (nr) systems
CN108684217B (en) * 2017-08-28 2020-11-10 北京小米移动软件有限公司 Method, device and system for switching base station

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873665A (en) * 2009-04-22 2010-10-27 大唐移动通信设备有限公司 Evolutionary Home NB local network type processing method and device
CN101877878A (en) * 2009-04-30 2010-11-03 中兴通讯股份有限公司 Cross-net element switching method and system
CN102036328A (en) * 2009-09-30 2011-04-27 中兴通讯股份有限公司 Method and system for processing unsuccessful business preparation during S1 switching
CN102550080A (en) * 2009-09-30 2012-07-04 瑞典爱立信有限公司 Methods and arrangements in a mobile telecommunication system
CN103168493A (en) * 2010-10-13 2013-06-19 阿尔卡特朗讯公司 In-sequence delivery of upstream user traffic during handover
CN102761983A (en) * 2012-07-09 2012-10-31 中兴通讯股份有限公司 Method and device for reestablishing radio link
WO2017193940A1 (en) * 2016-05-11 2017-11-16 中兴通讯股份有限公司 Inter-base station switching method and device
KR20180127191A (en) * 2017-05-19 2018-11-28 한국전자통신연구원 Handover method in mobile communication system
CN109429288A (en) * 2017-06-28 2019-03-05 大唐移动通信设备有限公司 The processing method of E-RAB establishment process and the concurrent scene of across base station handoff procedure
CN111052795A (en) * 2017-09-28 2020-04-21 中兴通讯股份有限公司 Method and system for exchanging messages in a wireless network
CN109874155A (en) * 2017-12-01 2019-06-11 大唐移动通信设备有限公司 A kind of cell switching method and base station
KR20200115328A (en) * 2019-03-28 2020-10-07 삼성전자주식회사 Method and apparatus for handover in a next generation mobile communication system
CN113647146A (en) * 2019-03-28 2021-11-12 三星电子株式会社 Handover method and apparatus for use in next generation mobile communication system
CN113810964A (en) * 2020-06-13 2021-12-17 华为技术有限公司 Communication method and device

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
3GPP LTE系统中的切换算法研究;刘强;余建国;;电信科学;20101120(第S2期);全文 *
CATT. "38331_CR1016r2_(Rel-15)_R2-1908510".3GPP tsg_ran\tsg_ran.2019,全文. *
CATT.R2-1905862 "Correction on Handover from NR to EUTRAN".3GPP tsg_ran\wg2_rl2.2019,(第tsgr2_106期),全文. *
Ericsson.R2-090219 "UE capability transfer upon handover to E-UTRA".3GPP tsg_ran\WG2_RL2.2009,(第TSGR2_64bis期),全文. *
NEC. "R2-085460 Simplification of the transparent container in the HO COMMAND - TP to 36.331".3GPP tsg_ran\WG2_RL2.2008,全文. *

Also Published As

Publication number Publication date
CN114466417A (en) 2022-05-10

Similar Documents

Publication Publication Date Title
CN102687562B (en) For monitoring channel to determine the method and apparatus of adjacent cell information
CN102687543B (en) Methods and apparatus to avoid transmission of redundant neighbor cell information to mobile stations
CA3041571C (en) Channel encoding and decoding method and device in wireless communications
CN108604903A (en) The polar code with variable block length is generated using punctured
CN109874155B (en) Cell switching method and base station
CN101911777B (en) High-speed serving cell change
EP4030845A1 (en) Communication method and device
CN114342435B (en) Wireless communication method and device
US9531845B2 (en) Method and apparatus compatible with multi-version for storing wireless resource
CN105474721A (en) Systems and methods for obtaining system information for a wireless communication device
CN103067876A (en) Method for transmitting control information under direct mode operation (DMO) and system thereof
CN101222690B (en) Code switching method, system and device
CN101778356A (en) Short message sending method, short message service device and substation subsystem
CN114466417B (en) Method for improving execution efficiency in process of switching UE from NR base station to LTE base station, switching method and UE
CN101873584A (en) Method and system for regenerating key in cell during failed switching
CN101828423A (en) A method for realizing voice coding/decoding capability interaction between a radio network and a core network
CN101018198A (en) IP address information transmission method and mobile switching center
CN103582018A (en) Intersystem load control method, access equipment and user equipment
CN102595510B (en) Message processing method and device
CN102378293B (en) Code division multiple access system and A17 interface compatibility realization method
CN114466418B (en) Method for improving XN switching execution efficiency of NR system, switching method and NR system
CN102487499B (en) Method for re-directing tunnel and interworking function entity
WO2009046594A1 (en) A method for negotiating codec between a wireless network and a core network in a mobile
CN102769882A (en) Heterogeneous network baton handover method supporting M2M (Machine to Machine) communication
CN108464056A (en) Configuration method, device, base station and the equipment of the core network of user equipment information

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant