WO2004102833A1 - A method and apparatus for uplink synchronization maintenance with p2p communication in wireless communication networks - Google Patents
A method and apparatus for uplink synchronization maintenance with p2p communication in wireless communication networks Download PDFInfo
- Publication number
- WO2004102833A1 WO2004102833A1 PCT/IB2004/050468 IB2004050468W WO2004102833A1 WO 2004102833 A1 WO2004102833 A1 WO 2004102833A1 IB 2004050468 W IB2004050468 W IB 2004050468W WO 2004102833 A1 WO2004102833 A1 WO 2004102833A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- user equipment
- network system
- uplink synchronization
- uplink
- customized
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
Definitions
- the present invention relates to a method and apparatus with P2P communication in wireless communication networks, and more particularly, to a method- and apparatus for uplink synchronization maintenance with P2P communication in wireless communication networks.
- a UE user equipment
- Fig. 1 illustrates the conventional communication mode, where UE1 and UE2 interact through the
- UTRAN consisting of the base station transceiver (namely Node B) and the Radio Resource controller (RNC), and this communication mode is also called UP- UTRAN-DOWN mode.
- RNC Radio Resource controller
- P2P peer-to-peer communication
- Fig. 2 illustrates a P2P communication mode, as Fig.2 shown, the dashed line represents signaling link, the solid line for data link and the arrowhead for direction of information flow.
- TDD CDMA communication system including TD-SCDMA systems, and incorporated herein by reference.
- the UE After establishing uplink synchronization with the UTRAN through the same random access procedure as existing TD-SCDMA systems, the UE can establish a P2P direct link with the other UE, in accordance with the method and apparatus as described in the application document whose Application Serial No. is 03119892.9, i.e.: allocate relevant dedicated resource for two P2P UEs. Then, direct link between the two UEs can be established and maintained in accordance with the method and apparatus as described in the application whose Application Serial No. is 03119895.3, so that the two UEs can receive and transmit P2P signals in the allocated timeslots respectively, and thus P2P communication between two UEs can be implemented.
- P2P communication mode when P2P communication mode is applied in TDD wireless communication systems, if a P2P UE shares the same uplink timeslot as other UEs employing UP-UTRAN-DOWN mode, it may potentially impair uplink synchronization and thus deteriorate the system performance.
- the distance between the UE and the UTRAN will change, which means the UE establishing uplink synchronization with the UTRAN via random access procedure in cell search procedure after powering on, is likely to lose synchronization with the UTRAN.
- corresponding methods are needed to keep the UE in synchronization with the UTRAN.
- the UTRAN can overhear information on the P2P link between the two UEs during P2P communication process. In this way, if it can't be guaranteed that the P2P signals from the two UEs arrive at the UTRAN at the same time, the spreading code demodulated at the UTRAN won't be orthogonal, thus the system performance is deteriorated.
- P2P communication mode changes the UP-UTRAN-DOWN communication mode in conventional TD-SCDMA systems, i.e.: in conventional TD-SCDMA systems, the UTRAN is involved in any ongoing communication as information source or destination or relayer/forwarder, thus it can monitor and control the UE's uplink signal transmitting time through a specific traffic burst structure, so as to maintain uplink synchronization between the UE and the
- the UE While during P2P communication, the UE has no dedicated traffic channel linked with the UTRAN, so it can only overhear information between two P2P UEs, which means that the UTRAN can't maintain uplink synchronization with conventional mode by adjusting the uplink synchronization TA (time advance) with a specific traffic burst structure even if it can overhear and estimate the communicating UE's synchronization shift information. Therefore, for communication systems like TD-SCDMA systems that have a strict requirement for uplink synchronization, how to maintain uplink synchronization between a moving UE and the UTRAN, will be a great challenge.
- the method and apparatus for uplink maintenance estimates the synchronization shift information of two UEs, according to the UTRAN's overheard signal on the direct link between the two P2P UEs. Then, the synchronization shift information obtained through estimation is sent to the two UEs via downlink common control channel between the UTRAN and the UEs.
- the URAN has to send poll message to the UE to increase its power to transmit P2P signals till it can overhear information transferred over P2P direct communication link.
- transmission power of the P2P communicating UEs is expected to transmit signals to each other with transmission power high enough to reach the UTRAN, otherwise, the UTRAN may fail to overhear signals on P2P direct link and therefore fail to maintain uplink synchronization for each UE.
- P2P link generally is established between two UEs who are very close to each other, and in order to satisfy the same quality for the same services, the P2P communicating UEs are expected to transmit P2P signals to each other with much lower transmission power than that between the UE s and the UTRAN. With lower transmission power, P2P communication can benefit the system with reduced system interference and saved battery consumption, and therefore improve system capacity.
- the UE's transmission power may be increased for the UTRAN to overhear signals on the P2P link, which imposes contradicts with increasing the system performance and capacity by using lower transmission.
- the UTRAN can get the synchronization shift information by estimating the midamble in the traffic burst structure.
- the synchronization shift information is sent to the P2P communicating UEs via PCH on downlink control channel, to adjust the UEs' TA for transmitting P2P signals, and thus the UE and the UTRAN can be kept synchronized.
- TD- SCDMA protocol standard we know a specific PCH is shared by several UEs and the associated PCH for each UE is identified by the calculation result of its IMSI (International Mobile Station Identification, only the last three digitals is used in this case), DRX (Discontinuous Reception) cycle and the number of common control channels. Each UE has a different IMSI of its own, while DRX cycle and the number of common control channel are determined by the network system configuration.
- An object of the present invention is to provide a method and apparatus for uplink synchronization maintenance with P2P communication in wireless communication systems.
- the method and apparatus can control the P2P communicating UEs to maintain uplink synchronization, thus effectively resolve the above problems like overload of PCH caused by controlling the P2P communicating UEs to maintain uplink synchronization via common control channels and system performance degradation caused by increasing the UE's transmission power when the UTRAN can't overhear P2P link signals.
- a method for uplink synchronization with P2P (Peer to Peer) communication performed by the UE in a wireless communication system, comprising: (a) negotiating with the wireless communication network system about the schedule and parameters for controlling uplink synchronization for the UE, during P2P direct link establishment; (b) transmitting testing signals to the network system via a customized uplink channel according to the negotiated parameters, with the TA and transmission power obtained through random access procedure; (c) receiving the control information transmitted via a customized downlink channel from the network system according to the negotiated schedule; (c) maintaining uplink synchronization for the UE in P2P communication according to the control information.
- the customized uplink channel and downlink channel are customized by the networks system for the UE between the UE and the network system.
- An uplink synchronization maintenance method for a P2P UE to be executed by the network system in a wireless communication system in the present invention comprising: (i) customizing an uplink channel and a downlink channel between the network system and the UE for the UE; (ii) negotiating with the UE about the schedule and parameters for controlling uplink synchronization; (iii) receiving testing signals from the UE via the customized uplink channel, according to the negotiated parameters; (iv) estimating the control information for uplink synchronization for the UE, according to the received signals; and (v) transmitting the control information to the UE via said customized downlink channel according to the negotiated schedule, so as to control the UE to maintain uplink synchronization with the network system during P2P communication procedure.
- Fig. 1 is a schematic diagram illustrating conventional UP-UTRAN-DOWN communication mode
- Fig. 2 is a schematic diagram illustrating the P2P communication mode in accordance with the present invention.
- Fig. 3 illustrates the chart flow for the method for the uplink synchronization maintenance with P2P communication in TD-SCDMA systems in accordance with the present invention.
- the essence lies in: maintaining customized channels between each UE and the UTRAN to control each UE's uplink synchronization when two UEs are performing P2P communication, wherein the customized uplink channel is for the UTRAN to estimate synchronization shift information and the customized downlink for the UTRAN to send the adjusted synchronization shift information to the corresponding UE.
- the channels to be customized between the UTRAN and the P2P UEs may be DCH (Dedicated channel) or USCH/DSCH (Uplink/Downlink shared channel), or any other traffic channel or control channel satisfying the requirement.
- these customized channels are allocated to corresponding UEs.
- the customized channels can also be adjusted. Different from existing dedicated channels and USCH/DSCH, these customized channels can be used to control the P2P UEs to maintain uplink synchronization, according to specific UE requirement with specific sub-frame and occupancy interval.
- the uplink synchronization maintenance method provided in the present invention reserves customized channels between the UTRAN and the UEs, but it has obvious difference from the uplink synchronization maintenance method in conventional TD-SCDMA systems, which can be characterize in : (1) traffic information is not transferred on the customized channels between the UTRAN and the corresponding UE, so traffic information transferred on the P2P direct link won't produce direct influence upon these customized channels.
- a UE in P2P communication mode can send N continuous traffic bursts to the UTRAN, so as to estimate the uplink synchronization shift information, i.e.: the UTRAN can estimate the synchronization shift information according to N continuous traffic bursts, but in the uplink synchronization control method in conventional TD-SCDMA systems, the UTRAN estimates the synchronization shift information according to a traffic burst transmitted by the UE; (3) these channels between the UTRAN and corresponding UEs are customized according to different UE requirement, which means the corresponding UEs can share these channels with other UEs and the corresponding UEs only occupy these channels intermittently and regularly when needed, so the UTRAN can estimate uplink synchronization intermittently and regularly according to the negotiated schedule.
- the UTRAN estimates the timing information continuously by evaluating the channel impulse response of each midamble in the same timeslot used by users in each sub-frame.
- a detailed description below will go to the uplink synchronization maintenance method as proposed in the present invention via the customized channels between the UTRAN and the UEs, taking TD-SCDMA system as example, in conjunction with Fig. 3.
- the UE searches for a cell to camp in after powering on (step S1).
- the UE establishes uplink synchronization with the UTRAN through random access procedure (step S2).
- the UTRAN customizes uplink and downlink channels for the UE when the UE establishes P2P link with the other UE (step S3), wherein the customized uplink and downlink channels can be the DCH or USCH/DSCH, and these customized channels shouldn't conflict with the radio resource used for P2P direct communication.
- the UE and the UTRAN negotiate the schedule and parameters for uplink synchronization control, that is: to determine the interval to execute uplink synchronization control and how many continuous bursts to be used in uplink synchronization estimation. According to the negotiated result, the UE and the UTRAN set TimerD (for determining the interval to execute uplink synchronization) and counterV (for determining the number of continuous bursts) respectively (step S4).
- the value of the timer and the counter can be adjusted according to P2P link status, for instance, according to the changing communication environment, distance between the UE and the other UE who are performing P2P communication, locations of the two UEs, their trans mission power and specific requirements from the UTRAN or the two UEs (e.g. the UTRAN may want to get the status information of all P2P direct links).
- P2P link status for instance, according to the changing communication environment, distance between the UE and the other UE who are performing P2P communication, locations of the two UEs, their trans mission power and specific requirements from the UTRAN or the two UEs (e.g. the UTRAN may want to get the status information of all P2P direct links).
- the UTRAN may want to get the status information of all P2P direct links.
- the interval of Timer is expected to increase and the number of continuous bursts is expected to decrease.
- the P2P UE After the timer and the counter for uplink synchronization control are set according to the negotiated parameters, the P2P UE sets its TA for transmitting P2P signals via the direct traffic channel according to the synchronization adjustment acquired during random access procedure in which uplink synchronization is established (step S5). Then, the UE begins to communicate directly with the other UE via the P2P communication link.
- the UE While setting its TA for transmitting P2P signals, the UE sets its TA and transmission power to transmit testing signals for controlling uplink synchronization via the above customized uplink channel to the UTRAN, according to the synchronization adjustment and power control information obtained when establishing uplink synchronization with the UTRAN during random access procedure (step S6).
- the UE checks whether it is time to send signals for uplink synchronization (step S7). If the timer doesn't expire, the UE go on with direct communication (step S11). If the timer expires, the UE sends traffic bursts to the UTRAN continuously via the customized uplink channel (step S8), and at the same time the counter begins to count (step S9). The UE judges whether the traffic bursts sent reach the predefined value of the counter (step S10). If not reached, the UE keeps sending traffic bursts (step S8); if reached, the UE stops sending traffic bursts to the UTRAN.
- the UE When sending N traffic bursts to the UTRAN, the UE continues P2P direct communication. After sending N traffic bursts, the UE waits for the downlink control information from the UTRAN via the customized downlink channel, according to the negotiated schedule. According to the predefined schedule, the UTRAN receives and records the N expected continuous traffic bursts transferred from the UE via the customized uplink channel.
- the UE determines whether the counter and timer need to be adjusted according to evaluating the P2P link status information (step S13).
- the UTRAN sets the UE's synchronization shift information SS, power control information PC, the adjusted values of the timer and/or the counter, and then sends the estimated synchronization shift information SS, power control information PC, the adjusted values of the timer and/or the counter to the UE, in the next available downlink timeslot via the customized downlink channel (step S14).
- the UTRAN fails to receive any traffic burst from the UE in the above step S12, it only sends power control command and doesn't send synchronization shift information and the adjusted values of the timer and/or counter to the UE in step S14, so that the UE can increase its expected transmission power the next time it sends N traffic bursts via the customized uplink channel.
- the UE receives the control information from the UTRAN via the customized downlink channel, wherein the control information includes the above synchronization shift information SS, power control information PC, the adjusted values of the counter and/or the timer. Then, the UE determines whether the TA for transmitting signals needs to be adjusted, according to the synchronization shift information SS (step S15).
- step S16 If information SS is included in the control information, that is, the UE is out of synchronization with the UTRAN, the UE adjusts its transmission time in P2P direct link in step of ⁇ k/8 chips (step S16), wherein the default value of k (from 1 to 8) is to be determined through negotiation during P2P link establishment and the value of k can be adjusted during the call. If information SS is not included in the control information, that is, the UE maintains synchronization with the UTRAN or the UTRAN can't evaluate the synchronization shift, the UE won't adjust its transmission time for P2P signals.
- the UE determines whether to adjust its transmission time and transmission power to be used for transmitting signals on the customized uplink channel next time (step S17). If needed, the UE adjusts its transmission time and transmission power to be used for transmitting signals on the customized uplink channel next time, according to the received synchronization shift information SS and power control information PC as above
- step S18 the UE further determines whether to adjust the value of timer and/or the counter (step S19). If needed, the UE adjusts the interval to send signals to the UTRAN and the number of continuous traffic bursts next time via the customized uplink channel, according to the adjusted value of the timer and/or the counter in the received control information (step S20). After making the above adjustments, the UE continues P2P communication, and iterates the procedures in the above steps from S7 to S20 during P2P communication.
- the above method for uplink synchronization maintenance with P2P communication in wireless communication networks in accordance with the present invention can be implemented in computer software, or in corresponding hardware, or in combination of software and hardware.
- the hardware structures of existing mobile terminals and the UTRAN remain unchanged, while the above steps from S1 to S20 can all be implemented in software modules.
- the method for uplink synchronization provided in the present invention is obviously different.
- the difference lies in that there exist customized uplink channel for estimating synchronization shift information and downlink channel for sending the synchronization shift information between the UE and the UTRAN, so the UTRAN needn't overhear traffic signals transferred on the P2P link in the method of the present invention.
- the present invention realizes uplink synchronization control through customized channels between the UE and the UTRAN, so problems like overload of downlink common control channel and system performance degradation caused by increasing the UE's transmission power, can be overcome.
- signals from different UEs can arrive at the UTRAN at the same time during P2P communication, which maintains the orthogonal integrity of modulated spreading code of uplink signals and cancels the interference of the P2P direct link to the wireless systems.
- the method for uplink synchronization provided in the present invention occupies a little more radio resource, but UEs only use these customized channels intermittently and the resource cost added by these customized channels can be shared by P2P dynamic channel allocation procedure, P2P soft switching procedure, power control procedure and etc, which is necessary for P2P communication systems to mange radio resource. Therefore, the method provided in the present invention can still save radio resource than existing communication systems.
- the method for uplink synchronization maintenance with P2P communication as proposed in this invention is also applicable to other TDD mode, TDD SCDMA and advanced wireless communication systems that have certain requirement for uplink synchronization.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES04727966T ES2389041T3 (en) | 2003-05-19 | 2004-04-16 | Method and apparatus for uplink synchronization maintenance with P2P communication in wireless communication networks |
CN2004800137102A CN1792048B (en) | 2003-05-19 | 2004-04-16 | Method and apparatus for uplink synchronization maintenance for point-to-point peer-to-peer communication in a wireless communication network |
EP04727966A EP1627477B1 (en) | 2003-05-19 | 2004-04-16 | A method and apparatus for uplink synchronization maintenance with p2p communication in wireless communication networks |
JP2006530773A JP4394689B2 (en) | 2003-05-19 | 2004-04-16 | Apparatus and method for maintaining uplink synchronization with P2P communication in a wireless communication network |
US10/556,613 US7336638B2 (en) | 2003-05-19 | 2004-04-16 | Method and apparatus for uplink synchronization maintenance with P2P communication in wireless communication networks |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA03123738XA CN1549612A (en) | 2003-05-19 | 2003-05-19 | UP-link synchronous maintaining method and apparatus for point-to-point coordinate communication in radio communication network |
CN03123738.X | 2003-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004102833A1 true WO2004102833A1 (en) | 2004-11-25 |
Family
ID=33438163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2004/050468 WO2004102833A1 (en) | 2003-05-19 | 2004-04-16 | A method and apparatus for uplink synchronization maintenance with p2p communication in wireless communication networks |
Country Status (7)
Country | Link |
---|---|
US (1) | US7336638B2 (en) |
EP (1) | EP1627477B1 (en) |
JP (1) | JP4394689B2 (en) |
CN (2) | CN1549612A (en) |
ES (1) | ES2389041T3 (en) |
TW (1) | TWI350077B (en) |
WO (1) | WO2004102833A1 (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006064411A2 (en) * | 2004-12-17 | 2006-06-22 | Koninklijke Philips Electronics N.V. | Power control method and apparatus for p2p communication |
CN1330099C (en) * | 2004-12-15 | 2007-08-01 | 展讯通信(上海)有限公司 | A method for implementing sending and receiving control of TD-SCDMA system under different conditions |
WO2007111941A2 (en) * | 2006-03-24 | 2007-10-04 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
WO2008156276A2 (en) * | 2007-06-18 | 2008-12-24 | Lg Electronics Inc. | Method of performing uplink synchronization in wireless communication system |
WO2009136706A3 (en) * | 2008-05-06 | 2010-02-11 | Lg Electronics Inc. | Apparatus and method for uplink transmission in wireless communication system |
US7872986B2 (en) | 2006-10-30 | 2011-01-18 | Lg Electronics Inc. | Method for transitioning between multiple reception levels |
JP4792525B2 (en) * | 2006-08-22 | 2011-10-12 | ゼットティーイー コーポレーション | TD-SCDMA system and HSUPA random access control method therefor |
US8184570B2 (en) | 2007-04-30 | 2012-05-22 | Lg Electronics Inc. | Method of transmitting data in wireless communication system supporting multimedia broadcast/multicast service |
WO2013002688A1 (en) * | 2011-06-29 | 2013-01-03 | Telefonaktiebolaget L M Ericsson (Publ) | A method and a user equipment for peer-to-peer communication |
JP2013013115A (en) * | 2006-06-16 | 2013-01-17 | Qualcomm Inc | Encoding information in beacon signals |
US20130308615A1 (en) * | 2005-10-21 | 2013-11-21 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
US8619685B2 (en) | 2006-10-02 | 2013-12-31 | Lg Electronics Inc. | Method for transmitting and receiving paging message in wireless communication system |
EP2698012A1 (en) * | 2011-04-14 | 2014-02-19 | Telefonaktiebolaget L M Ericsson (PUBL) | Methods and network nodes for setting a timeout value |
US8798070B2 (en) | 2007-05-02 | 2014-08-05 | Lg Electronics Inc. | Method of transmitting data in a wireless communication system |
US8811336B2 (en) | 2006-08-22 | 2014-08-19 | Lg Electronics Inc. | Method of performing handover and controlling thereof in a mobile communication system |
USRE45347E1 (en) | 2007-04-30 | 2015-01-20 | Lg Electronics Inc. | Methods of transmitting data blocks in wireless communication system |
US8964652B2 (en) | 2007-06-18 | 2015-02-24 | Lg Electronics Inc. | Method for enhancing of controlling radio resources, method for transmitting status report, and receiver in mobile communication system |
KR101497151B1 (en) * | 2007-11-21 | 2015-03-02 | 엘지전자 주식회사 | A method of managing radio resource |
EP2892287A1 (en) * | 2012-08-28 | 2015-07-08 | Kyocera Corporation | Base station, user terminal, and processor |
CN104869657A (en) * | 2005-02-07 | 2015-08-26 | 艾利森电话股份有限公司 | Methods And Arrangements For Handling Unreliable Scheduling Grants In A Telecommunication Network |
US9544106B2 (en) | 2011-05-18 | 2017-01-10 | Ntt Docomo, Inc. | Mobile communication method and radio base station |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1527622A (en) * | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and apparatus for up-link hold-in of point-to-point coordinate communication in radio communication network |
CN1536925A (en) * | 2003-04-11 | 2004-10-13 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and device for supporting P2P Communication in TDD CDMA communicaton system |
CN1549612A (en) * | 2003-05-19 | 2004-11-24 | 皇家飞利浦电子股份有限公司 | UP-link synchronous maintaining method and apparatus for point-to-point coordinate communication in radio communication network |
US8909945B2 (en) | 2005-04-08 | 2014-12-09 | Interdigital Technology Corporation | Method for transmit and receive power control in mesh systems |
MY143908A (en) * | 2005-04-08 | 2011-07-29 | Interdigital Tech Corp | Method for transmit and receive power control in mesh systems |
KR100925763B1 (en) * | 2005-07-06 | 2009-11-11 | 지티이 코포레이션 | A Method of Uplink Synchronization Establishment Based on the United Transmission Technology and the Transmission Matrix thereof |
US8570924B2 (en) * | 2005-10-31 | 2013-10-29 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement for activity detection in a telecommunication system |
TW200719636A (en) * | 2005-11-04 | 2007-05-16 | Inst Information Industry | Method for a direct link in wireless communication system |
CN1992556B (en) * | 2005-12-27 | 2010-12-29 | 展讯通信(上海)有限公司 | Method and system for uplink synchronization |
WO2007078171A2 (en) | 2006-01-05 | 2007-07-12 | Lg Electronics Inc. | Method of transmitting feedback information in a wireless communication system |
KR101211807B1 (en) * | 2006-01-05 | 2012-12-12 | 엘지전자 주식회사 | Method for managing synchronization state for mobile terminal in mobile communication system |
KR101387475B1 (en) | 2006-03-22 | 2014-04-22 | 엘지전자 주식회사 | method of processing data in mobile communication system having a plurality of network entities |
CN101473565B (en) | 2006-06-21 | 2012-11-07 | Lg电子株式会社 | Method of transmitting and receiving radio access information using a message separation in a wireless mobile communications system |
KR101369135B1 (en) | 2006-06-21 | 2014-03-05 | 엘지전자 주식회사 | Mehtod for supproting quality of multimeida broadcast multicast service(mbms) in mobile communications system and terminal thereof |
US8929281B2 (en) * | 2006-09-15 | 2015-01-06 | Qualcomm Incorporated | Methods and apparatus related to peer to peer device |
US8369800B2 (en) * | 2006-09-15 | 2013-02-05 | Qualcomm Incorporated | Methods and apparatus related to power control and/or interference management in a mixed wireless communications system |
KR100748938B1 (en) * | 2006-09-18 | 2007-08-13 | 주식회사 이노와이어리스 | Method for obtaining uplink synchronization in mobile wimax analyzer |
KR100833064B1 (en) | 2006-12-13 | 2008-05-27 | 에스케이 텔레콤주식회사 | Method for controlling synchronization of td-scdma system and apparatus applied to the same |
CN104994573B (en) | 2007-02-05 | 2019-05-10 | 日本电气株式会社 | Wireless communication system, its base station and mobile station, communication synchronization management method |
US7680067B2 (en) * | 2007-03-09 | 2010-03-16 | Palm, Inc. | Peer-to-peer data synchronization architecture |
EP2144452A1 (en) * | 2007-04-24 | 2010-01-13 | NTT DoCoMo, Inc. | Mobile communication method, wireless base station, mobile station, and processor |
KR101486352B1 (en) * | 2007-06-18 | 2015-01-26 | 엘지전자 주식회사 | Method of controlling uplink synchronization state at a user equipment in a mobile communication system |
WO2008156308A2 (en) * | 2007-06-18 | 2008-12-24 | Lg Electronics Inc. | Paging information transmission method for effective call setup |
KR101341515B1 (en) | 2007-06-18 | 2013-12-16 | 엘지전자 주식회사 | Method of updating repeatedly-transmitted information in wireless communicaiton system |
KR101470637B1 (en) | 2007-06-18 | 2014-12-08 | 엘지전자 주식회사 | Method for enhancing radio resource and informing status report in mobile telecommunications system and receiver of mobile telecommunications |
WO2008156314A2 (en) | 2007-06-20 | 2008-12-24 | Lg Electronics Inc. | Effective system information reception method |
KR101359686B1 (en) * | 2007-06-26 | 2014-02-10 | 삼성전자주식회사 | Apparatus and method for selecting bandwidth for peer to peer communication in broadband wireless communication system |
KR101367798B1 (en) * | 2007-06-29 | 2014-02-28 | 삼성전자주식회사 | Apparatus and method for setting peer to peer communication in broadband wireless communication system |
KR101498968B1 (en) * | 2007-07-05 | 2015-03-12 | 삼성전자주식회사 | Apparatus and method for determining communication resource of peer to peer in a communication system |
US8730841B2 (en) * | 2007-07-06 | 2014-05-20 | Qualcomm Incorporated | Peer to peer communications methods and apparatus providing for use of both WAN uplink and downlink bands |
US8526410B2 (en) | 2007-07-06 | 2013-09-03 | Qualcomm Incorporated | Methods and apparatus related to interference management when sharing downlink bandwidth between wide area network usage and peer to peer signaling |
US8432786B2 (en) * | 2007-07-10 | 2013-04-30 | Qualcomm Incorporated | Control channel design to support one-to-one, many-to-one, and one-to-many peer-to-peer communications |
US8521194B2 (en) * | 2007-07-10 | 2013-08-27 | Qualcomm Incorporated | Performing paging in a wireless peer-to-peer network |
EP2385739B1 (en) | 2007-08-08 | 2017-11-01 | Huawei Technologies Co., Ltd. | Radio communication system and mobile station device |
KR101514841B1 (en) | 2007-08-10 | 2015-04-23 | 엘지전자 주식회사 | Method for re-attempting a random access effectively |
US8594030B2 (en) | 2007-08-10 | 2013-11-26 | Lg Electronics Inc. | Method for controlling HARQ operation in dynamic radio resource allocation |
US8488523B2 (en) | 2007-08-14 | 2013-07-16 | Lg Electronics Inc. | Method of transmitting and processing data block of specific protocol layer in wireless communication system |
KR100937432B1 (en) | 2007-09-13 | 2010-01-18 | 엘지전자 주식회사 | Method of allocating radio resources in a wireless communication system |
KR101396062B1 (en) | 2007-09-18 | 2014-05-26 | 엘지전자 주식회사 | Effective data block transmission method using a header indicator |
KR101591824B1 (en) | 2007-09-18 | 2016-02-04 | 엘지전자 주식회사 | Method of performing polling procedure in a wireless communication system |
KR101513033B1 (en) | 2007-09-18 | 2015-04-17 | 엘지전자 주식회사 | A method for qos guarantees in a multilayer structure |
US8687565B2 (en) | 2007-09-20 | 2014-04-01 | Lg Electronics Inc. | Method of effectively transmitting radio resource allocation request in mobile communication system |
KR20090041323A (en) | 2007-10-23 | 2009-04-28 | 엘지전자 주식회사 | Method of effectively transmitting identification information of terminal during the generation of data block |
US20090109838A1 (en) * | 2007-10-30 | 2009-04-30 | Richard Lee-Chee Kuo | Method of Handling Random Access Procedure Failure and Related Communication Device |
CN101478816B (en) * | 2008-01-02 | 2010-12-08 | 大唐移动通信设备有限公司 | In-sync and out-of-sync indication reporting method and apparatus, wireless link monitoring method and system |
FI123253B (en) * | 2008-06-19 | 2013-01-15 | Cassidian Finland Oy | Control mechanism for use of common control channel |
KR101000794B1 (en) * | 2008-08-29 | 2010-12-13 | 전자부품연구원 | Method for synchronizing in wireless communication system |
EP2340681B1 (en) * | 2008-09-25 | 2014-11-12 | Nokia Corporation | Synchronization for device-to-device communication |
AU2009345733B2 (en) | 2009-05-05 | 2013-12-19 | Huawei Technologies Co., Ltd. | Method, system and apparatus for reading broadcast message |
US8892722B1 (en) * | 2009-06-22 | 2014-11-18 | Marvell International Ltd. | Peer-to-peer discovery systems and methods |
JP2012531769A (en) * | 2009-06-30 | 2012-12-10 | ノキア シーメンス ネットワークス オサケユキチュア | Apparatus and method for transmitting paging message for peer-to-peer communication |
WO2011071556A1 (en) * | 2009-12-07 | 2011-06-16 | Qualcomm Incorporated | Method and apparatus for improving synchronization shift command transmission efficiency in td-scdma uplink synchronization |
CN102160435B (en) * | 2009-12-17 | 2014-09-24 | 高通股份有限公司 | Avoidance of synchronization oscillation in td-scdma uplink synchronization |
US20110223953A1 (en) * | 2010-03-15 | 2011-09-15 | Lg Electronics Inc. | Apparatus for direct communication in a wireless system and method thereof |
WO2011132818A1 (en) * | 2010-04-23 | 2011-10-27 | 엘지전자 주식회사 | Method and apparatus for direct communications in a wireless communication system |
US8792459B2 (en) * | 2010-10-06 | 2014-07-29 | Qualcomm Incorporated | Methods and apparatus for joint scheduling of peer-to-peer links and wireless wide area network links in cellular networks |
BR112013008522B1 (en) | 2010-10-12 | 2022-02-22 | Sun Patent Trust | Communication device and communication method |
GB2485387B (en) * | 2010-11-12 | 2013-10-02 | Intellectual Ventures Holding 81 Llc | Wireless communication system, communication unit, and method for scheduling |
JP2012119827A (en) * | 2010-11-30 | 2012-06-21 | Ntt Docomo Inc | Mobile communication method, radio base station, and mobile station |
US8705421B2 (en) * | 2011-04-22 | 2014-04-22 | Qualcomm Incorporated | Methods and apparatus for timing synchronization for peer to peer devices operating in WWAN spectrum |
JP5357209B2 (en) * | 2011-05-19 | 2013-12-04 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication method |
JP2013034165A (en) * | 2011-06-27 | 2013-02-14 | Ntt Docomo Inc | Wireless communication method, wireless communication system and mobile stations |
US9185690B2 (en) * | 2012-02-29 | 2015-11-10 | Sharp Kabushiki Kaisha | Allocating and determining resources for a device-to-device link |
WO2013187605A1 (en) * | 2012-06-15 | 2013-12-19 | 엘지전자 주식회사 | User equipment detection method for direct communication between user equipment and user equipment in wireless communication system, and apparatus therefor |
CN104412676B (en) * | 2012-06-26 | 2018-11-16 | Lg电子株式会社 | The synchronous method and synchronizer of D2D communication in wireless communication system |
KR101692171B1 (en) | 2012-09-06 | 2017-01-02 | 코닌클리즈케 케이피엔 엔.브이. | Establishing a device-to-device communication session |
US9444851B2 (en) * | 2012-10-29 | 2016-09-13 | Koninklijke Kpn N.V. | Intercepting device-to-device communication |
CN110167001B (en) * | 2013-07-31 | 2022-04-12 | 索尼公司 | Terminal device and information processing apparatus |
KR102057589B1 (en) * | 2013-11-15 | 2019-12-19 | 삼성전자 주식회사 | Method and apparatus for d2d synchronization procedure in partial network coverage |
US10912100B2 (en) * | 2014-07-29 | 2021-02-02 | Lg Electronics Inc. | Method for transmitting control information for D2D communication in wireless communication system and device therefor |
CN107079529B (en) * | 2014-09-26 | 2020-06-19 | 夏普株式会社 | Terminal device, base station device, communication method, and integrated circuit |
EP4236496A3 (en) | 2014-12-23 | 2023-10-11 | InterDigital Patent Holdings, Inc. | Latency reduction in lte systems |
US9986446B2 (en) | 2016-05-31 | 2018-05-29 | Apple Inc. | Providing special radio provisions to link budget limited user equipment at activation |
US10567986B2 (en) * | 2016-09-06 | 2020-02-18 | Qualcomm Incorporated | Back-off mechanisms for fair joint access of unlicensed sidelink |
WO2019009619A1 (en) * | 2017-07-04 | 2019-01-10 | Samsung Electronics Co., Ltd. | Method and apparatus for communication based on frame structure |
US10595363B2 (en) | 2018-05-11 | 2020-03-17 | At&T Intellectual Property I, L.P. | Autonomous topology management for wireless radio user equipment |
CN111541475B (en) * | 2020-04-23 | 2022-02-08 | 中国电子科技集团公司第五十四研究所 | Time-frequency synchronization method in voice service of satellite mobile communication system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5636243A (en) * | 1994-06-25 | 1997-06-03 | Nec Corporation | Interterminal direct communication in digital mobile communication system |
US5913171A (en) * | 1995-03-03 | 1999-06-15 | Nokia Telecommunications Oy | Synchronizing a mobile station transmission |
WO2002037714A1 (en) * | 2000-11-06 | 2002-05-10 | Motorola Inc | Method and apparatus to synchronize mobile radios |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6094575A (en) * | 1993-11-01 | 2000-07-25 | Omnipoint Corporation | Communication system and method |
SE518132C2 (en) * | 1996-06-07 | 2002-08-27 | Ericsson Telefon Ab L M | Method and apparatus for synchronizing combined receivers and transmitters in a cellular system |
US6047178A (en) * | 1997-12-19 | 2000-04-04 | Nortel Networks Corporation | Direct communication wireless radio system |
US6389032B1 (en) * | 1999-02-11 | 2002-05-14 | International Business Machines Corporation | Internet voice transmission |
US6415146B1 (en) * | 1999-05-25 | 2002-07-02 | Lucent Technologies Inc. | Wireless system enabling mobile-to-mobile communication |
US6496694B1 (en) * | 2000-01-13 | 2002-12-17 | Intel Corporation | Wireless local loop with intelligent base station |
KR20020034640A (en) * | 2000-11-02 | 2002-05-09 | 윤종용 | Apparatus for controlling time slot of sub frame randomly and method thereof in narrow band time division duplex code division multiple access system |
US6807165B2 (en) * | 2000-11-08 | 2004-10-19 | Meshnetworks, Inc. | Time division protocol for an ad-hoc, peer-to-peer radio network having coordinating channel access to shared parallel data channels with separate reservation channel |
US7039027B2 (en) * | 2000-12-28 | 2006-05-02 | Symbol Technologies, Inc. | Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products |
KR100433893B1 (en) * | 2001-01-15 | 2004-06-04 | 삼성전자주식회사 | A power control method in narrow band time division duplexing code division multiple access communication system and apparatus thereof |
US7133386B2 (en) * | 2002-11-18 | 2006-11-07 | Cisco Technology, Inc. | Method and system for service portability across disjoint wireless networks |
CN1527635A (en) * | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and system for establishing radio reciprocal communication |
CN1527622A (en) | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and apparatus for up-link hold-in of point-to-point coordinate communication in radio communication network |
CN1527623A (en) | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and apparatus for establishing and retaining point-to-point communication radio chaining in radio communication network |
CN1527634A (en) * | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and system for keeping up-link control of mobile terminal in reciprocal communication |
CN1527621A (en) | 2003-03-07 | 2004-09-08 | 皇家飞利浦电子股份有限公司 | Method and apparatus for establishing point-to-point coordinate communication in radio communication network |
CN1536925A (en) * | 2003-04-11 | 2004-10-13 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and device for supporting P2P Communication in TDD CDMA communicaton system |
CN1549612A (en) * | 2003-05-19 | 2004-11-24 | 皇家飞利浦电子股份有限公司 | UP-link synchronous maintaining method and apparatus for point-to-point coordinate communication in radio communication network |
CN1549474A (en) * | 2003-05-19 | 2004-11-24 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and apparauts for supporting P2P communication in TDD CDMA communication system |
-
2003
- 2003-05-19 CN CNA03123738XA patent/CN1549612A/en active Pending
-
2004
- 2004-03-15 TW TW093106846A patent/TWI350077B/en not_active IP Right Cessation
- 2004-04-16 ES ES04727966T patent/ES2389041T3/en not_active Expired - Lifetime
- 2004-04-16 US US10/556,613 patent/US7336638B2/en not_active Expired - Fee Related
- 2004-04-16 CN CN2004800137102A patent/CN1792048B/en not_active Expired - Fee Related
- 2004-04-16 JP JP2006530773A patent/JP4394689B2/en not_active Expired - Fee Related
- 2004-04-16 WO PCT/IB2004/050468 patent/WO2004102833A1/en active Application Filing
- 2004-04-16 EP EP04727966A patent/EP1627477B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5636243A (en) * | 1994-06-25 | 1997-06-03 | Nec Corporation | Interterminal direct communication in digital mobile communication system |
US5913171A (en) * | 1995-03-03 | 1999-06-15 | Nokia Telecommunications Oy | Synchronizing a mobile station transmission |
WO2002037714A1 (en) * | 2000-11-06 | 2002-05-10 | Motorola Inc | Method and apparatus to synchronize mobile radios |
Non-Patent Citations (1)
Title |
---|
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Synchronisation in UTRAN Stage 2 (Release 5); 3GPP TS 25.402 V5.1.0", 3GPP TS 25.402 V5.1.0, XX, XX, June 2002 (2002-06-01), pages 1 - 46, XP002261398 * |
Cited By (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1330099C (en) * | 2004-12-15 | 2007-08-01 | 展讯通信(上海)有限公司 | A method for implementing sending and receiving control of TD-SCDMA system under different conditions |
WO2006064411A2 (en) * | 2004-12-17 | 2006-06-22 | Koninklijke Philips Electronics N.V. | Power control method and apparatus for p2p communication |
WO2006064411A3 (en) * | 2004-12-17 | 2006-11-02 | Koninkl Philips Electronics Nv | Power control method and apparatus for p2p communication |
CN104869657A (en) * | 2005-02-07 | 2015-08-26 | 艾利森电话股份有限公司 | Methods And Arrangements For Handling Unreliable Scheduling Grants In A Telecommunication Network |
CN104869657B (en) * | 2005-02-07 | 2019-07-12 | 艾利森电话股份有限公司 | For handling the method and arrangement of the unreliable scheduling grant in telecommunication network |
EP2688227B1 (en) * | 2005-10-21 | 2018-06-13 | Telefonaktiebolaget LM Ericsson (publ) | Technique for performing a random access procedure over a radio interface |
US20130308615A1 (en) * | 2005-10-21 | 2013-11-21 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
US11770858B2 (en) | 2005-10-21 | 2023-09-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
US20150189678A1 (en) * | 2005-10-21 | 2015-07-02 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for Performing a Random Access Procedure over a Radio Interface |
EP3119141A1 (en) * | 2005-10-21 | 2017-01-18 | Telefonaktiebolaget LM Ericsson (publ) | Technique for performing a random access procedure over a radio interface |
US10219302B2 (en) * | 2005-10-21 | 2019-02-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
EP1952560B1 (en) | 2005-10-21 | 2013-12-11 | Telefonaktiebolaget LM Ericsson (publ) | Technique for performing a random access procedure over a radio interface |
US10492226B2 (en) | 2005-10-21 | 2019-11-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
EP3651510A1 (en) * | 2005-10-21 | 2020-05-13 | Telefonaktiebolaget LM Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
US11246167B2 (en) | 2005-10-21 | 2022-02-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique for performing a random access procedure over a radio interface |
US11711777B2 (en) | 2006-03-24 | 2023-07-25 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
TWI466470B (en) * | 2006-03-24 | 2014-12-21 | Interdigital Tech Corp | Method and apparatus for sending and receiving a measurement report via a shared channel |
WO2007111941A3 (en) * | 2006-03-24 | 2008-02-07 | Interdigital Tech Corp | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
KR101161918B1 (en) | 2006-03-24 | 2012-07-03 | 인터디지탈 테크날러지 코포레이션 | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
WO2007111941A2 (en) * | 2006-03-24 | 2007-10-04 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
JP2009531973A (en) * | 2006-03-24 | 2009-09-03 | インターデイジタル テクノロジー コーポレーション | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
US12137429B2 (en) | 2006-03-24 | 2024-11-05 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
US9900857B2 (en) | 2006-03-24 | 2018-02-20 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
EP4057716A1 (en) * | 2006-03-24 | 2022-09-14 | InterDigital Technology Corporation | Method and apparatuses for maintaining uplink synchronization and reducing battery power consumption |
US9167546B2 (en) | 2006-03-24 | 2015-10-20 | Interdigital Technology Corporation | Method and apparatus for providing discontinuous reception (DRX) |
US10433271B2 (en) | 2006-03-24 | 2019-10-01 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
CN110266425A (en) * | 2006-03-24 | 2019-09-20 | 交互数字技术公司 | By the WTRU method executed and WTRU |
KR101161472B1 (en) | 2006-03-24 | 2012-07-02 | 인터디지탈 테크날러지 코포레이션 | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
US10764857B2 (en) | 2006-03-24 | 2020-09-01 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
US11871371B2 (en) | 2006-03-24 | 2024-01-09 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
US9432817B2 (en) | 2006-06-16 | 2016-08-30 | Qualcomm Incorporated | Encoding information in beacon signals |
JP2013013115A (en) * | 2006-06-16 | 2013-01-17 | Qualcomm Inc | Encoding information in beacon signals |
US9025680B2 (en) | 2006-06-16 | 2015-05-05 | Qualcomm Incorporated | Encoding information in beacon signals |
US8811336B2 (en) | 2006-08-22 | 2014-08-19 | Lg Electronics Inc. | Method of performing handover and controlling thereof in a mobile communication system |
JP4792525B2 (en) * | 2006-08-22 | 2011-10-12 | ゼットティーイー コーポレーション | TD-SCDMA system and HSUPA random access control method therefor |
US8619685B2 (en) | 2006-10-02 | 2013-12-31 | Lg Electronics Inc. | Method for transmitting and receiving paging message in wireless communication system |
US8054758B2 (en) | 2006-10-30 | 2011-11-08 | Lg Electronics Inc. | Method for transitioning between multiple reception levels |
US9516695B2 (en) | 2006-10-30 | 2016-12-06 | Lg Electronics Inc. | Method for transitioning between multiple reception levels |
US9161306B2 (en) | 2006-10-30 | 2015-10-13 | Lg Electronics Inc. | Method for transitioning between multiple reception levels |
US7872986B2 (en) | 2006-10-30 | 2011-01-18 | Lg Electronics Inc. | Method for transitioning between multiple reception levels |
US8184570B2 (en) | 2007-04-30 | 2012-05-22 | Lg Electronics Inc. | Method of transmitting data in wireless communication system supporting multimedia broadcast/multicast service |
USRE45347E1 (en) | 2007-04-30 | 2015-01-20 | Lg Electronics Inc. | Methods of transmitting data blocks in wireless communication system |
US8798070B2 (en) | 2007-05-02 | 2014-08-05 | Lg Electronics Inc. | Method of transmitting data in a wireless communication system |
US9131003B2 (en) | 2007-05-02 | 2015-09-08 | Lg Electronics Inc. | Method of transmitting data in a wireless communication system |
GB2457852A (en) * | 2007-06-18 | 2009-09-02 | Lg Electronics Inc | Method of performing uplink synchronization in wireless communication system |
US9538490B2 (en) | 2007-06-18 | 2017-01-03 | Lg Electronics Inc. | Method of performing uplink synchronization in wireless communication system |
US8649366B2 (en) | 2007-06-18 | 2014-02-11 | Lg Electronics Inc. | Method of performing uplink synchronization in wireless communication system |
US8964652B2 (en) | 2007-06-18 | 2015-02-24 | Lg Electronics Inc. | Method for enhancing of controlling radio resources, method for transmitting status report, and receiver in mobile communication system |
US9049655B2 (en) | 2007-06-18 | 2015-06-02 | Lg Electronics Inc. | Method of performing uplink synchronization in wireless communication system |
US8107456B2 (en) | 2007-06-18 | 2012-01-31 | Lg Electronics Inc. | Method of performing uplink synchronization in wireless communication system |
WO2008156276A3 (en) * | 2007-06-18 | 2009-02-05 | Lg Electronics Inc | Method of performing uplink synchronization in wireless communication system |
WO2008156276A2 (en) * | 2007-06-18 | 2008-12-24 | Lg Electronics Inc. | Method of performing uplink synchronization in wireless communication system |
GB2457852B (en) * | 2007-06-18 | 2012-05-30 | Lg Electronics Inc | Method of performing uplink synchronization in wireless communication system |
KR101497151B1 (en) * | 2007-11-21 | 2015-03-02 | 엘지전자 주식회사 | A method of managing radio resource |
CN102057740B (en) * | 2008-05-06 | 2014-08-13 | Lg电子株式会社 | Apparatus and method for uplink transmission in wireless communication system |
US8274936B2 (en) | 2008-05-06 | 2012-09-25 | Lg Electronics Inc. | Apparatus and method for uplink transmission in wireless communication system |
CN102057740A (en) * | 2008-05-06 | 2011-05-11 | Lg电子株式会社 | Apparatus and method for uplink transmission in wireless communication system |
WO2009136706A3 (en) * | 2008-05-06 | 2010-02-11 | Lg Electronics Inc. | Apparatus and method for uplink transmission in wireless communication system |
EP2698012A1 (en) * | 2011-04-14 | 2014-02-19 | Telefonaktiebolaget L M Ericsson (PUBL) | Methods and network nodes for setting a timeout value |
EP2698012A4 (en) * | 2011-04-14 | 2014-11-19 | Ericsson Telefon Ab L M | Methods and network nodes for setting a timeout value |
US9544106B2 (en) | 2011-05-18 | 2017-01-10 | Ntt Docomo, Inc. | Mobile communication method and radio base station |
WO2013002688A1 (en) * | 2011-06-29 | 2013-01-03 | Telefonaktiebolaget L M Ericsson (Publ) | A method and a user equipment for peer-to-peer communication |
EP2892287A4 (en) * | 2012-08-28 | 2016-04-20 | Kyocera Corp | Base station, user terminal, and processor |
EP2892287A1 (en) * | 2012-08-28 | 2015-07-08 | Kyocera Corporation | Base station, user terminal, and processor |
Also Published As
Publication number | Publication date |
---|---|
TWI350077B (en) | 2011-10-01 |
TW200531560A (en) | 2005-09-16 |
CN1792048A (en) | 2006-06-21 |
CN1549612A (en) | 2004-11-24 |
JP2007501582A (en) | 2007-01-25 |
EP1627477A1 (en) | 2006-02-22 |
JP4394689B2 (en) | 2010-01-06 |
CN1792048B (en) | 2012-05-23 |
ES2389041T3 (en) | 2012-10-22 |
US7336638B2 (en) | 2008-02-26 |
US20060258383A1 (en) | 2006-11-16 |
EP1627477B1 (en) | 2012-06-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1627477B1 (en) | A method and apparatus for uplink synchronization maintenance with p2p communication in wireless communication networks | |
CN112154692B (en) | Coverage extension method and user equipment | |
US7286841B2 (en) | Method and system for maintaining uplink synchronization with peer-to-peer communication in wireless communication system | |
US7286842B2 (en) | Method and apparatus for supporting direct link communication in TDD CDMA system | |
EP2286624B1 (en) | Peer to peer communications methods and apparatus providing for use of both wan uplink and downlink bands | |
EP1667481A1 (en) | Radio communication apparatus, radio communication system, and base station equipment | |
US7046644B1 (en) | Adaptive transmission channel allocation method and system for ISM and unlicensed frequency bands | |
US20080310329A1 (en) | Method and Apparartus for Mitigating Psp Interference Psp-Enabled Communication Systems | |
WO2014182388A1 (en) | Network assisted device to device communication | |
JP2007500988A (en) | Method and apparatus for supporting P2P communication in TDDCDMA | |
EP1604495B1 (en) | Maintaining uplink control via the interception of signals for mobile terminals in direct mode peer-to-peer communication | |
EP1692899A1 (en) | Method and apparatus for increasing the system capacity in p2p enabled systems | |
US9654990B2 (en) | Communication method and system | |
CN118947217A (en) | Communication method and terminal | |
KR20070018782A (en) | Radio communication apparatus, radio communication system, and base station equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006530773 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004727966 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006258383 Country of ref document: US Ref document number: 10556613 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20048137102 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2004727966 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10556613 Country of ref document: US |