IP Library › Granted Patent US 12,335,793
Granted Patent B2
US 12,335,793 · App. 17/886,306 · Granted Jun 17, 2025

Mobility management method, terminal, and base station

Inventors: Bingzhao Li (Beijing, CN); Wei Quan (Beijing, CN); Jian Zhang (Shenzhen, CN); Weihua Liu (Shenzhen, CN)
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
H04W36/0033H04W48/10H04W52/0209H04W76/20H04W76/27H04W36/0061H04W76/19
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,335,793
App. No.
17/886,306
Filed
Aug 11, 2022
Granted
Jun 17, 2025
Kind
B2
Art Unit
2469
USPC
370/312
Abstract

Embodiments of the present invention disclose a mobility management method, user equipment, and a base station. The mobility management method may include: receiving, by user equipment UE in a connected mode, a source identifier of the UE from a first base station, where the source identifier is used to uniquely identify the UE in the first base station; entering, by the UE, a low-overhead state after a low-overhead activation condition is satisfied, where in the low-overhead state, the UE stores a connection context of the UE in the connected mode, and camps on a cell according to a cell reselection criterion during movement; and reporting, by the UE when a first preset condition is satisfied, the source identifier to a second base station to which a second cell belongs, where the second cell is a serving cell on which the UE currently camps.

Claims (50)

1. A method, comprising:

receiving, when a terminal being in a connected mode, a first message from a first base station, wherein the first message comprises a long source identifier and a short source identifier, wherein each of the long source identifier and the short source identifier identifies the terminal;

causing the terminal to enter a low-overhead state, wherein the low-overhead state is a state in which the terminal stores a connection context of the terminal, and camps on a serving cell according to a cell reselection criterion during movement of the terminal;

receiving indication information from a second base station; and

determining, according to the indication information, which one of the long source identifier and the short source identifier is to be sent to the second base station; and

sending the long source identifier or the short source identifier to the second base station.

2. The method according to claim 1 , wherein the first message further comprises a control instruction indicating the terminal to enter the low-overhead state.

3. The method according to claim 1 , wherein sending the long source identifier or the short source identifier to the second base station comprises:

in response to a preset condition being satisfied, sending the long source identifier or the short source identifier to the second base station;

wherein the preset condition comprises:

a second cell area on which the terminal currently camps does not belong to a specified cell set; or

a second cell on which the terminal currently camps and a first cell which belongs to the first base station do not belong to a same preset area or a same base station; or

the terminal needs to send uplink data.

4. The method according to claim 1 , wherein the indication information is a system message.

5. The method according to claim 1 , wherein the long source identifier and the short source identifier are independent of each other; or

the short source identifier originates from a portion of the long source identifier.

6. A non-transitory computer-readable storage medium, comprising executable instructions, when executed by one or more processors of a terminal, cause the terminal to perform the steps of:

receiving, when the terminal being in a connected mode, a first message from a first base station, wherein the first message comprises a long source identifier and a short source identifier, wherein each of the long source identifier and the short source identifier identifies the terminal;

causing the terminal, to enter a low-overhead state, wherein the low-overhead state is a state in which the terminal stores a connection context of the terminal, and camps on a serving cell according to a cell reselection criterion during movement of the terminal;

receiving indication information from a second base station; and

determining, according to the indication information, which one of the long source identifier and the short source identifier is to be sent to the second base station; and

sending the long source identifier or the short source identifier to the second base station.

7. The non-transitory computer-readable storage medium according to claim 6 , wherein the first message further comprises a control instruction indicating the terminal to enter the low-overhead state.

8. The non-transitory computer-readable storage medium according to claim 6 , wherein in response to a preset condition being satisfied, sending the long source identifier or the short source identifier to the second base station;

wherein the preset condition comprises:

a second cell on which the terminal currently camps does not belong to the specified cell set; or

a second cell on which the terminal currently camps and a first cell which belongs to the first base station do not belong to a same preset area or a same base station; or

the terminal needs to send uplink data.

9. The non-transitory computer-readable storage medium according to claim 6 , wherein the indication information is a system message.

10. The non-transitory computer-readable storage medium according to claim 6 , wherein the long source identifier and the short source identifier are independent of each other; or

the short source identifier originates from a portion of the long source identifier.

11. A method, comprising:

sending, by a first base station, a first message to a terminal in a connected mode, wherein the first message comprises a long source identifier and a short source identifier, wherein each of the long source identifier and the short source identifier identifies the terminal; and

keeping, by the first base station, a connection context of the terminal in a low-overhead state of the terminal, wherein the low-overhead state is a state in which the terminal stores the connection context of the terminal, and camps on a serving cell according to a cell reselection criterion during movement of the terminal;

receiving, by the first base station, a second message from a second base station, wherein the second message carries the long source identifier or the short source identifier, and carries a second cell identifier of a second cell, and the second cell is a serving cell on which the terminal currently camps; and

determining, according to the long source identifier or the short source identifier, and according to the second cell identifier, that the serving cell on which the terminal currently camps is the second cell.

12. The method according to claim 11 , wherein the first message further comprises a control instruction indicating the terminal to enter the low-overhead state.

13. A communications system, comprising: a first base station and a second base station; wherein the first base station is configured to send a first message to a terminal in a connected mode, wherein the first message comprises a long source identifier and a short source identifier, wherein each of the long source identifier and the short source identifier identifies the terminal; and

the second base station is configured to send indication information to the terminal in a low-overhead state, receive the long source identifier or the short source identifier, and send a second message to the first base station, wherein the second message carries the received source identifier and a cell identifier of a second cell, the indication information is usable for determining which one of a long source identifier and a short source identifier is to be reported sent to the second base station, wherein the low-overhead state is a state in which the terminal stores a connection context of the terminal, and camps on a serving cell according to a cell reselection criterion during movement of the terminal.

14. The system according to claim 13 , wherein the first message further comprises a control instruction indicating the terminal to enter the low-overhead state.

15. The system according to claim 13 , wherein the indication information is a system message.

16. The system according to claim 13 , wherein the long source identifier and the short source identifier are independent of each other; or

the short source identifier originates from a portion of the long source identifier.

17. The system according to claim 13 , further comprising: the terminal, wherein the terminal is configured to:

receive, when the terminal being in a connected mode, the first message from the first base station;

enter the low-overhead state; and

send, according to the indication information, the long source identifier or the short source identifier to the second base station.

18. The system according to claim 17 , wherein the terminal is further configured to:

receive the indication information from the second base station; and

determine, according to the indication information, which one of the long source identifier and the short source identifier is to be reported to the second base station.

Priority Claims (1)
WO PCT/CN2015/100336 · Dec 31, 2015 · international
Continuity (3)
Continuation 16025659 · Jul 2, 2018
Continuation PCTCN2016078165 · Mar 31, 2016
Related Publication 20220386184A1 · Dec 1, 2022
References Cited (98)
US 9253705B1 · Pawar et al. · 2016 [cited by applicant]
US 20050124344A1 · Laroia et al. · 2005 [cited by applicant]
US 20080233963A1 · Alanara et al. · 2008 [cited by applicant]
US 20090264132A1 · Tajima et al. · 2009 [cited by applicant]
US 20090316657A1 · Singh et al. · 2009 [cited by applicant]
US 20100130205A1 · Jung · 2010 [cited by examiner]
US 20100311420A1 · Reza et al. · 2010 [cited by applicant]
US 20110103277A1 · Watfa et al. · 2011 [cited by applicant]
US 20120003977A1 · Iwamura et al. · 2012 [cited by applicant]
US 20120135701A1 · Zhu et al. · 2012 [cited by applicant]
US 20120243417A1 · Henttonen et al. · 2012 [cited by applicant]
US 20120257602A1 · Takahashi et al. · 2012 [cited by applicant]
US 20130122922A1 · Cho et al. · 2013 [cited by applicant]
US 20130196713A1 · Anbe · 2013 [cited by applicant]
US 20130208699A1 · Hakkinen et al. · 2013 [cited by applicant]
US 20130229931A1 · Kim · 2013 [cited by applicant]
US 20130260811A1 · Rayavarapu · 2013 [cited by applicant]
US 20130331105A1 · Olofsson et al. · 2013 [cited by applicant]
US 20140086126A1 · Park · 2014 [cited by examiner]
US 20140179325A1 · Xu et al. · 2014 [cited by applicant]
US 20140274000A1 · Gosselin et al. · 2014 [cited by applicant]
US 20140274038A1 · Singhal et al. · 2014 [cited by applicant]
US 20140286315A1 · Chen et al. · 2014 [cited by applicant]
US 20140370915A1 · Jung et al. · 2014 [cited by applicant]
US 20150079991A1 · Koskinen et al. · 2015 [cited by applicant]
US 20150140983A1 · Cosimini et al. · 2015 [cited by applicant]
US 20150146530A1 · Jung · 2015 [cited by examiner]
US 20150195755A1 · Gulati et al. · 2015 [cited by applicant]
US 20150215868A1 · Xu · 2015 [cited by applicant]
US 20150215894A1 · Hayashi · 2015 [cited by applicant]
US 20150271783A1 · Hu et al. · 2015 [cited by applicant]
US 20150327240A1 · Yamada et al. · 2015 [cited by applicant]
US 20160135247A1 · Ozturk et al. · 2016 [cited by applicant]
US 20160142951A1 · Balasubramanian et al. · 2016 [cited by applicant]
US 20160165490A1 · Nagasaka et al. · 2016 [cited by applicant]
US 20160278160A1 · Schliwa-Bertling et al. · 2016 [cited by applicant]
US 20160345243A1 · Zaus et al. · 2016 [cited by applicant]
US 20170019809A1 · Saikusa · 2017 [cited by applicant]
US 20170171786A1 · Mochizuki et al. · 2017 [cited by applicant]
US 20180192426A1 · Ryoo · 2018 [cited by examiner]
CN 101626565A · 2010 [cited by applicant]
CN 101668280A · 2010 [cited by applicant]
CN 101686517A · 2010 [cited by applicant]
CN 101861743A · 2010 [cited by applicant]
CN 102170626A · 2011 [cited by applicant]
CN 102300309A · 2011 [cited by applicant]
CN 102369741A · 2012 [cited by applicant]
CN 102469548A · 2012 [cited by applicant]
CN 102754495A · 2012 [cited by applicant]
CN 103188750A · 2013 [cited by applicant]
CN 103444252A · 2013 [cited by applicant]
CN 103686955A · 2014 [cited by applicant]
CN 103687055A · 2014 [cited by applicant]
CN 103716771A · 2014 [cited by applicant]
CN 103797849A · 2014 [cited by applicant]
CN 103906152A · 2014 [cited by applicant]
CN 104144524A · 2014 [cited by applicant]
CN 104145508A · 2014 [cited by applicant]
CN 104247553A · 2014 [cited by applicant]
CN 104427565A · 2015 [cited by applicant]
CN 104754759A · 2015 [cited by applicant]
CN 102860116B · 2016 [cited by applicant]
EP 2645803A1 · 2013 [cited by applicant]
EP 2645804A1 · 2013 [cited by applicant]
EP 2621222B1 · 2015 [cited by applicant]
EP 2196059B1 · 2018 [cited by applicant]
JP 2007036541A · 2007 [cited by applicant]
JP 2010199632A · 2010 [cited by applicant]
JP 2011009798A · 2011 [cited by applicant]
JP 2013504234A · 2013 [cited by applicant]
JP 2013157723A · 2013 [cited by applicant]
RU 2469503C2 · 2012 [cited by applicant]
WO 2007088381A1 · 2007 [cited by applicant]
WO 2007095473A1 · 2007 [cited by applicant]
WO 2011035719A1 · 2011 [cited by applicant]
WO 2012131568A2 · 2012 [cited by applicant]
WO 2013016842A1 · 2013 [cited by applicant]
WO 2013144613A1 · 2013 [cited by applicant]
WO 2013189348A2 · 2013 [cited by applicant]
WO 2014030274A1 · 2014 [cited by applicant]
WO 2014175967A1 · 2014 [cited by applicant]
WO 2014183833A1 · 2014 [cited by applicant]
WO 2015014560A1 · 2015 [cited by applicant]
WO 2015020179A1 · 2015 [cited by applicant]
WO 2015136893A1 · 2015 [cited by applicant]
WO 2015196691A1 · 2015 [cited by applicant]
3GPP TR 23.720 V1.2.0(Nov. 2015);3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Architecture enhancements for Cellular Internet of Things(Release 13);total 96 pages. [cited by applicant]
NTT Docomo, Inc., Work on user plane based solution with AS information stored in RAN[online], 3GPP TSG-RAN WG2#92 R2-156424, Nov. 20, 2015, Internet, total 13 pages. [cited by applicant]
Ericsson, RRC Connection Suspend and Resume[online], 3GPP TSG-RAN WG2#92R2-156395, Nov. 20, 2015, Internet URL:http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_92/Docs/R2-156395.zip,total 12 pages. [cited by applicant]
XP051046169 3GPP TR 23.720 V1.1.0(Oct. 2015),3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Architecture enhancements for Cellular Internet of Things(Release 13),total 90 pa… [cited by applicant]
3GPP TS 36.331 V12.7.0 (Sep. 2015),3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Radio Resource Control (RRC);Protocol specific… [cited by applicant]
3GPP TS 36.300 V13.1.0 (Sep. 2015),3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access… [cited by applicant]
3GPP TS 36.423 V13.2.0 (Dec. 2015),3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access Network(E-UTRAN);X2 application protocol (X2AP)(Release… [cited by applicant]
3GPP TS 36.101 V13.1.0 (Oct. 2015), 3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);User Equipment (UE) radio transmission and re… [cited by applicant]
3GPP TS 24.301 V13.4.0 (Dec. 2015),3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals;Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3(Release 13),tota… [cited by applicant]
Huawei, HiSilicon, Introduction of UE power saving mode. 3GPP TSG-CT WG1 Meeting #86, Guangzhou, P.R of China, Jan. 20-24, 2014, C1-140286, 39 pages. [cited by applicant]
3GPP TS 36.321 V12.8.0 (Dec. 2015);3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Medium Access Control (MAC) protocol specifica… [cited by applicant]
Interim Editor (Nortel),“Merged UTRAN Architecture Description V0.0.2”,TSG-RAN Working Group 3 meeting #2 TSGW3#2(99)147,Nyn shamn, Sweden, Mar. 15-19, 1999, Total 56 Pages. [cited by applicant]