WO2015184577A1 - Procédé de réduction de taux d'abandons d'appel par report d'un rapport tvm durant et juste après une procédure de transfert intercellulaire - Google Patents

Procédé de réduction de taux d'abandons d'appel par report d'un rapport tvm durant et juste après une procédure de transfert intercellulaire Download PDF

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Publication number
WO2015184577A1
WO2015184577A1 PCT/CN2014/079040 CN2014079040W WO2015184577A1 WO 2015184577 A1 WO2015184577 A1 WO 2015184577A1 CN 2014079040 W CN2014079040 W CN 2014079040W WO 2015184577 A1 WO2015184577 A1 WO 2015184577A1
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WO
WIPO (PCT)
Prior art keywords
tvm
network
blocking period
processor
tvm report
Prior art date
Application number
PCT/CN2014/079040
Other languages
English (en)
Inventor
Huan Xu
Yong Xie
Xiaojian LONG
Hongjin GUO
Xuepan GUAN
Tim Tynhuei LIOU
Jie Mao
Shiau-He Tsai
Original Assignee
Qualcomm Incorporated
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 Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2014/079040 priority Critical patent/WO2015184577A1/fr
Priority to PCT/CN2015/070582 priority patent/WO2015184805A1/fr
Publication of WO2015184577A1 publication Critical patent/WO2015184577A1/fr

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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
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • 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

Definitions

  • Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to reducing a call drop date by deferring a TVM report during and right after a handover procedure.
  • Wireless communication networks are widely deployed to provide various communication services such as telephony, video, data, messaging, broadcasts, and so on.
  • Such networks which are usually multiple access networks, support communications for multiple users by sharing the available network resources.
  • UTRAN Universal Terrestrial Radio Access Network
  • the UTRAN is the radio access network (RAN) defined as a part of the Universal Mobile Telecommunications System (UMTS), a third generation (3G) mobile phone technology supported by the 3rd Generation Partnership Project (3GPP).
  • UMTS Universal Mobile Telecommunications System
  • 3GPP 3rd Generation Partnership Project
  • the UMTS which is the successor to Global System for Mobile Communications (GSM) technologies, currently supports various air interface standards, such as Wideband-Code Division Multiple Access (W-CDMA), Time Division-Code Division Multiple Access (TD-CDMA), and Time Division-Synchronous Code Division Multiple Access (TD- SCDMA).
  • W-CDMA Wideband-Code Division Multiple Access
  • TD-CDMA Time Division-Code Division Multiple Access
  • TD- SCDMA Time Division-Synchronous Code Division Multiple Access
  • the UMTS also supports enhanced 3G data communications protocols, such as High Speed Downlink Packet Data (HSDPA), which provides higher data transfer speeds and capacity to associated UMTS networks.
  • HSDPA High Speed Downlink Packet Data
  • a method for wireless communications by a user equipment generally includes determining a blocking period, during which traffic volume measurement (TVM) reports are not to be transmitted during a handover (HO) procedure and after completion of the HO procedure, and deferring transmission of a TVM report until after the blocking period.
  • TVM traffic volume measurement
  • FIG. 1 is a block diagram conceptually illustrating an example of a telecommunications system in accordance with certain aspects of the present disclosure.
  • FIG. 2 is a block diagram conceptually illustrating an example of a frame structure in a telecommunications system in which certain aspects of the present disclosure may be practiced.
  • FIG. 3 is a block diagram conceptually illustrating an example of a Node B in communication with a user equipment device (UE) in a telecommunications system in accordance with certain aspects of the present disclosure.
  • UE user equipment device
  • FIGs. 4A and 4B illustrate example timelines of a handover procedure for TD-SCDMA.
  • FIG. 5 illustrates example operations for wireless communications by a UE, , in accordance with certain aspects of the present disclosure.
  • FIG. 6 illustrates a timeline of a TD-SCDMA handover, in accordance with certain aspects of the present disclosure.
  • FIG. 1 a block diagram is shown illustrating an example of a telecommunications system 100.
  • the various concepts presented throughout this disclosure may be implemented across a broad variety of telecommunication systems, network architectures, and communication standards.
  • the aspects of the present disclosure illustrated in FIG. 1 are presented with reference to a UMTS system employing a TD-SCDMA standard.
  • UMTS Universal Mobile Telecommunication
  • TD-SCDMA TD-SCDMA
  • certain aspects presented herein may be utilized in other type systems (e.g., in which handover of a UE between base station occurs).
  • the UMTS system includes a radio access network (RAN) 102 (e.g., UTRAN) that provides various wireless services including telephony, video, data, messaging, broadcasts, and/or other services.
  • the RAN 102 may be divided into a number of Radio Network Subsystems (RNSs) such as an RNS 107, each controlled by a Radio Network Controller (RNC) such as an RNC 106.
  • RNC Radio Network Controller
  • the RAN 102 may include any number of RNCs and RNSs in addition to the RNC 106 and RNS 107.
  • the RNC 106 is an apparatus responsible for, among other things, assigning, reconfiguring and releasing radio resources within the RNS 107.
  • the RNC 106 may be interconnected to other RNCs (not shown) in the RAN 102 through various types of interfaces such as a direct physical connection, a virtual network, or the like, using any suitable transport network.
  • the geographic region covered by the RNS 107 may be divided into a number of cells, with a radio transceiver apparatus serving each cell.
  • a radio transceiver apparatus is commonly referred to as a Node B in UMTS applications, but may also be referred to by those skilled in the art as a base station (BS), a base transceiver station (BTS), a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), an access point (AP), or some other suitable terminology.
  • BS basic service set
  • ESS extended service set
  • AP access point
  • two Node Bs 108 are shown; however, the RNS 107 may include any number of wireless Node Bs.
  • the Node Bs 108 provide wireless access points to a core network 104 for any number of mobile apparatuses.
  • a mobile apparatus include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a notebook, a netbook, a smartbook, a personal digital assistant (PDA), a satellite radio, a global positioning system (GPS) device, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, or any other similar functioning device.
  • SIP session initiation protocol
  • PDA personal digital assistant
  • GPS global positioning system
  • multimedia device e.g., a digital audio player (e.g., MP3 player), a camera, a game console, or any other similar functioning device.
  • MP3 player digital audio player
  • the mobile apparatus is commonly referred to as user equipment (UE) in UMTS applications, but may also be referred to by those skilled in the art as a mobile station (MS), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal (AT), a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, or some other suitable terminology.
  • UE user equipment
  • MS mobile station
  • AT access terminal
  • three UEs 110 are shown in communication with the Node Bs 108.
  • the downlink (DL), also called the forward link refers to the communication link from a Node B to a UE
  • the uplink (UL) also called the reverse link
  • the core network 104 includes a GSM core network.
  • GSM Global System for Mobile communications
  • the core network 104 supports circuit- switched services with a mobile switching center (MSC) 112 and a gateway MSC (GMSC) 114.
  • MSC mobile switching center
  • GMSC gateway MSC
  • the MSC 112 is an apparatus that controls call setup, call routing, and UE mobility functions.
  • the MSC 112 also includes a visitor location register (VLR) (not shown) that contains subscriber- related information for the duration that a UE is in the coverage area of the MSC 112.
  • VLR visitor location register
  • the GMSC 114 provides a gateway through the MSC 112 for the UE to access a circuit- switched network 116.
  • the GMSC 114 includes a home location register (HLR) (not shown) containing subscriber data, such as the data reflecting the details of the services to which a particular user has subscribed.
  • HLR home location register
  • the HLR is also associated with an authentication center (AuC) that contains subscriber-specific authentication data.
  • AuC authentication center
  • the core network 104 also supports packet-data services with a serving GPRS support node (SGSN) 118 and a gateway GPRS support node (GGSN) 120.
  • SGSN serving GPRS support node
  • GGSN gateway GPRS support node
  • the GGSN 120 provides a connection for the RAN 102 to a packet-based network 122.
  • the packet-based network 122 may be the Internet, a private data network, or some other suitable packet-based network.
  • the primary function of the GGSN 120 is to provide the UEs 110 with packet-based network connectivity. Data packets are transferred between the GGSN 120 and the UEs 110 through the SGSN 118, which performs primarily the same functions in the packet-based domain as the MSC 112 performs in the circuit- switched domain.
  • the UMTS air interface is a spread spectrum Direct-Sequence Code Division Multiple Access (DS-CDMA) system.
  • DS-CDMA Spread spectrum Direct-Sequence Code Division Multiple Access
  • the TD-SCDMA standard is based on such direct sequence spread spectrum technology and additionally calls for a time division duplexing (TDD), rather than a frequency division duplexing (FDD) as used in many FDD mode UMTS/W-CDMA systems.
  • TDD uses the same carrier frequency for both the uplink (UL) and downlink (DL) between a Node B 108 and a UE 110, but divides uplink and downlink transmissions into different time slots in the carrier.
  • FIG. 2 shows a frame structure 200 for a TD-SCDMA carrier.
  • the TD- SCDMA carrier as illustrated, has a frame 202 that is 10 ms in length.
  • the frame 202 has two 5 ms subframes 204, and each of the subframes 204 includes seven time slots, TS0 through TS6.
  • the first time slot, TS0 is usually allocated for downlink communication
  • the second time slot, TS1 is usually allocated for uplink communication.
  • the remaining time slots, TS2 through TS6 may be used for either uplink or downlink, which allows for greater flexibility during times of higher data transmission times in either the uplink or downlink directions.
  • a downlink pilot time slot (DwPTS) 206, a guard period (GP) 208, and an uplink pilot time slot (UpPTS) 210 are located between TS0 and TS1.
  • Each time slot, TS0-TS6, may allow data transmission multiplexed on a maximum of 16 code channels.
  • Data transmission on a code channel includes two data portions 212 separated by a midamble 214 and followed by a guard period (GP) 216.
  • the midamble 214 may be used for features, such as channel estimation, while the GP 216 may be used to avoid inter-burst interference.
  • FIG. 3 is a block diagram of a Node B 310 in communication with a UE 350 in a RAN 300, where the RAN 300 may be the RAN 102 in FIG. 1, the Node B 310 may be the Node B 108 in FIG. 1, and the UE 350 may be the UE 110 in FIG. 1.
  • a transmit processor 320 may receive data from a data source 312 and control signals from a controller/processor 340. The transmit processor 320 provides various signal processing functions for the data and control signals, as well as reference signals (e.g., pilot signals).
  • the transmit processor 320 may provide cyclic redundancy check (CRC) codes for error detection, coding and interleaving to facilitate forward error correction (FEC), mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M- quadrature amplitude modulation (M-QAM), and the like), spreading with orthogonal variable spreading factors (OVSF), and multiplying with scrambling codes to produce a series of symbols.
  • BPSK binary phase-shift keying
  • QPSK quadrature phase-shift keying
  • M-PSK M-phase-shift keying
  • M-QAM M- quadrature amplitude modulation
  • OVSF orthogonal variable spreading factors
  • These channel estimates may be derived from a reference signal transmitted by the UE 350 or from feedback contained in the midamble 214 (FIG. 2) from the UE 350.
  • the symbols generated by the transmit processor 320 are provided to a transmit frame processor 330 to create a frame structure.
  • the transmit frame processor 330 creates this frame structure by multiplexing the symbols with a midamble 214 (FIG. 2) from the controller/processor 340, resulting in a series of frames.
  • the frames are then provided to a transmitter 332, which provides various signal conditioning functions including amplifying, filtering, and modulating the frames onto a carrier for downlink transmission over the wireless medium through smart antennas 334.
  • the smart antennas 334 may be implemented with beam steering bidirectional adaptive antenna arrays or other similar beam technologies.
  • a receiver 354 receives the downlink transmission through an antenna 352 and processes the transmission to recover the information modulated onto the carrier.
  • the information recovered by the receiver 354 is provided to a receive frame processor 360, which parses each frame, and provides the midamble 214 (FIG. 2) to a channel processor 394 and the data, control, and reference signals to a receive processor 370.
  • the receive processor 370 then performs the inverse of the processing performed by the transmit processor 320 in the Node B 310. More specifically, the receive processor 370 descrambles and despreads the symbols, and then determines the most likely signal constellation points transmitted by the Node B 310 based on the modulation scheme.
  • the soft decisions may be based on channel estimates computed by the channel processor 394.
  • the soft decisions are then decoded and deinterleaved to recover the data, control, and reference signals.
  • the CRC codes are then checked to determine whether the frames were successfully decoded.
  • the data carried by the successfully decoded frames will then be provided to a data sink 372, which represents applications running in the UE 350 and/or various user interfaces (e.g., display).
  • Control signals carried by successfully decoded frames will be provided to a controller/processor 390.
  • the controller/processor 390 may also use an acknowledgement (ACK) and/or negative acknowledgement (NACK) protocol to support retransmission requests for those frames.
  • ACK acknowledgement
  • NACK negative acknowledgement
  • a transmit processor 380 receives data from a data source 378 and control signals from the controller/processor 390 and provides various signal processing functions including CRC codes, coding and interleaving to facilitate FEC, mapping to signal constellations, spreading with OVSFs, and scrambling to produce a series of symbols.
  • Channel estimates may be used to select the appropriate coding, modulation, spreading, and/or scrambling schemes.
  • the symbols produced by the transmit processor 380 will be provided to a transmit frame processor 382 to create a frame structure.
  • the transmit frame processor 382 creates this frame structure by multiplexing the symbols with a midamble 214 (FIG. 2) from the controller/processor 390, resulting in a series of frames.
  • the frames are then provided to a transmitter 356, which provides various signal conditioning functions including amplification, filtering, and modulating the frames onto a carrier for uplink transmission over the wireless medium through the antenna 352.
  • the uplink transmission is processed at the Node B 310 in a manner similar to that described in connection with the receiver function at the UE 350.
  • a receiver 335 receives the uplink transmission through the antenna 334 and processes the transmission to recover the information modulated onto the carrier.
  • the information recovered by the receiver 335 is provided to a receive frame processor 336, which parses each frame, and provides the midamble 214 (FIG. 2) to the channel processor 344 and the data, control, and reference signals to a receive processor 338.
  • the receive processor 338 performs the inverse of the processing performed by the transmit processor 380 in the UE 350.
  • the data and control signals carried by the successfully decoded frames may then be provided to a data sink 339 and the controller/processor, respectively. If some of the frames were unsuccessfully decoded by the receive processor, the controller/processor 340 may also use an acknowledgement (ACK) and/or negative acknowledgement (NACK) protocol to support retransmission requests for those frames.
  • ACK acknowledgement
  • NACK
  • the controller/processors 340 and 390 may be used to direct the operation at the Node B 310 and the UE 350, respectively.
  • the controller/processors 340 and 390 may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the computer- readable media of memories 342 and 392 may store data and software for the Node B 310 and the UE 350, respectively.
  • a scheduler/processor 346 at the Node B 310 may be used to allocate resources to the UEs and schedule downlink and/or uplink transmissions for the UEs.
  • a user equipment may experience a downlink (DL) failure at the cell it has transitioned to.
  • DL downlink
  • this issue may arise when the network switches to a new configuration (e.g., via a RadioBearerReconfiguration message) after handoff (HO) procedure complete, while the UE does not know about the new configuration due to reception delay of such new reconfiguration.
  • a UE may receive several protocol data units (PDUs) of a partial over-the-air (OTA) DL message before the failure, while the network (NW) assumes the UE receives the complete DL message before activation time and switches to new configuration at the activation time.
  • PDUs protocol data units
  • NW network
  • the UE and network may become out-of-sync with each other.
  • FIG. 4 A illustrates a time line of a normal handover procedure in TD-SCDMA, in accordance with certain aspects of the present disclosure.
  • a handover message (HO OTA message) is received and the HO is completed at T2.
  • network may initiate some number of (e.g., up to ten) measurement control messages (MCMs), as seen at T3, and transmit them to UE.
  • MCMs measurement control messages
  • T4 represents the predicted time at which all of the MCMs will be received, which may take up to ten seconds (after T3), for example, depending on the radio frequency (RF) conditions.
  • RF radio frequency
  • FIG. 4B illustrates an issue in TD-SCDMA in which a UE may become out- of-sync with the network if a TVM is transmitted during or right after the completion of a handover procedure.
  • the network may initiate up to ten measurement control messages (MCMs), as seen at T4, and transmit them to UE. If a traffic volume measurement (TVM) report from the UE is transmitted and received by NW during or right after the handover procedure, as seen at T3, the network may initiate a RadioBearerReconfiguration (RBRC) message immediately.
  • MCMs measurement control messages
  • NW traffic volume measurement
  • RBRC RadioBearerReconfiguration
  • the network radio network controller may not have a mechanism to schedule DL OTA transmissions based on radio link controller (RLC) status, so the RBRC message may be queued until the end of the MCM transmissions, as shown at T4 of FIG 4B.
  • RLC radio link controller
  • the TVM-triggered RBRC may be blocked and/or delayed by transmission of the measurement control messages (as noted above, it may take up to 10 seconds for all of the MCM to be received by the UE), as seen at T6 of FIG 4B.
  • the network may then transmit the RBRC.
  • the RBRC may have an associated activation time in which both the NW and UE are expected to activate the RBRC, as seen at T5 of FIG 4B.
  • the RBRC activation time may be before the time in which the RBRC could be received by the UE (due to transmission of the RBRC being delayed by the MCMs), a radio link failure (RLF) may occur.
  • RLF radio link failure
  • the RLF may occur because the network is operating using a new configuration while the UE is operating using an older configuration.
  • the complete RBRC may not be able to be received as the UE and NW may be out of sync at activation time already.
  • the NW has a revert mechanism, the RBRC may be received completely after NW reverts to an old configuration
  • aspects of the present disclosure provide mechanisms that may help prevent a UE and network becoming out-of-sync, for example, by taking action to avoid triggering a RBRC during or just after completion of a handover procedure.
  • FIG. 5 illustrates example operations 500 in accordance with certain aspects of the present disclosure, for example, which may resolve the issue illustrated in FIG. 4B.
  • operations 500 may help reduce call drop rate by deferring a TVM report during and right after a handover procedure.
  • Operations 500 begin, at 502, by determining a blocking period, during which traffic volume measurement (TVM) reports are not to be transmitted during and after completion of a handover (HO). At 504, operations 500 continue by deferring transmission of a TVM report until after the blocking period.
  • TVM traffic volume measurement
  • FIG. 6 illustrates an example handover timeline in a case where a UE performs operations 500 described above, which may prevent the UE becoming out-of- sync with the network.
  • a HO OTA message is received and a HO is completed at T2.
  • a TVM report may be deferred or blocked for a period of time.
  • the network may send a plurality of MCMs in response to the handover.
  • the UE may receive all of the MCMs that were transmitted by the network.
  • the UE may transmit a TVM and a RBRC may be received by the UE at T8.
  • the RBRC received at T8 may have an activation time at T9.
  • the activation time is after the time in which the RBRC is received by the UE, the UE and network may remain in-sync and a RLF may not occur.
  • the RRC may need to determine the start and end point for the TVM deferral/blocking period. In some cases, this determination may be made in higher processing sublayers (e.g., RRC/layer 3 "L3") and a lower layer (e.g., MAC layer 2 or "L2”) may be informed of the time frame for deferring/blocking the TVM report.
  • the RRC layer may handle the cases where the TVM report is canceled or has failed.
  • layer 2 (L2) may implement algorithms and logic to defer the TVM report during the deferral/blocking time frame.
  • L2 may need to initiate a new TVM report after the deferral/block time if there has been any TVM report that was deferred or dropped. According to certain aspects, if the TVM report is periodic, L2 may need to initiate a new TVM report at the next TVM report periodicity if there has been any TVM report that was deferred or dropped.
  • a UE may initiate a timer for the blocking period, upon reception of HO OTA message, wherein the HO may between base stations of a time division synchronous code division multiple access (TD-SCDMA) network.
  • the UE may transmit a TVM after expiration of the timer (indicating the end of the blocking period).
  • the TVM may be a TVM that was blocked during the blocking period.
  • the TVM may be a periodically scheduled TVM transmitted at a next periodic transmission time after the blocking period.
  • the UE may receive signaling indicating a duration of the blocking period, for example, via radio resource control (RRC) signaling from a base station.
  • RRC radio resource control
  • LTE Long Term Evolution
  • LTE-A LTE- Advanced
  • EV-DO Evolution-Data Optimized
  • UMB Ultra Mobile Broadband
  • Wi-Fi IEEE 802.11
  • WiMAX IEEE 802.16
  • UWB Ultra-Wideband
  • Bluetooth and/or other suitable systems.
  • LTE Long Term Evolution
  • network architecture and/or communication standard employed will depend on the specific application and the overall design constraints imposed on the system.
  • processors have been described in connection with various apparatuses and methods. These processors may be implemented using electronic hardware, computer software, or any combination thereof. Whether such processors are implemented as hardware or software will depend upon the particular application and overall design constraints imposed on the system.
  • a processor, any portion of a processor, or any combination of processors presented in this disclosure may be implemented with a microprocessor, microcontroller, digital signal processor (DSP), a field-programmable gate array (FPGA), a programmable logic device (PLD), a state machine, gated logic, discrete hardware circuits, and other suitable processing components configured to perform the various functions described throughout this disclosure.
  • DSP digital signal processor
  • FPGA field-programmable gate array
  • PLD programmable logic device
  • the functionality of a processor, any portion of a processor, or any combination of processors presented in this disclosure may be implemented with software being executed by a microprocessor, microcontroller, DSP, or other suitable platform.
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • the software may reside on a computer-readable medium.
  • a computer- readable medium may include, by way of example, memory such as a magnetic storage device (e.g., hard disk, floppy disk, magnetic strip), an optical disk (e.g., compact disc (CD), digital versatile disc (DVD)), a smart card, a flash memory device (e.g., card, stick, key drive), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), a register, or a removable disk.
  • memory is shown separate from the processors in the various aspects presented throughout this disclosure, the memory may be internal to the processors (e.g., cache or register).
  • Computer-readable media may be embodied in a computer-program product.
  • a computer-program product may include a computer-readable medium in packaging materials.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon certains aspects, la présente invention concerne des techniques qui peuvent aider à améliorer les performances de système dans un réseau de communication sans fil. Selon certains aspects, un équipement utilisateur (UE) peut déterminer une période de blocage, durant laquelle des rapports de mesure de volume de trafic (TVM) ne doivent pas être transmis durant et après l'achèvement d'un transfert intercellulaire (HO), et reporter la transmission d'un rapport de TVM jusqu'au moment après la période de blocage.
PCT/CN2014/079040 2014-06-02 2014-06-02 Procédé de réduction de taux d'abandons d'appel par report d'un rapport tvm durant et juste après une procédure de transfert intercellulaire WO2015184577A1 (fr)

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PCT/CN2014/079040 WO2015184577A1 (fr) 2014-06-02 2014-06-02 Procédé de réduction de taux d'abandons d'appel par report d'un rapport tvm durant et juste après une procédure de transfert intercellulaire
PCT/CN2015/070582 WO2015184805A1 (fr) 2014-06-02 2015-01-13 Procédé de réduction de taux d'abandon d'appels via l'ajournement d'un rapport tvm pendant et juste après une procédure de transfert

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PCT/CN2014/079040 WO2015184577A1 (fr) 2014-06-02 2014-06-02 Procédé de réduction de taux d'abandons d'appel par report d'un rapport tvm durant et juste après une procédure de transfert intercellulaire

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PCT/CN2015/070582 WO2015184805A1 (fr) 2014-06-02 2015-01-13 Procédé de réduction de taux d'abandon d'appels via l'ajournement d'un rapport tvm pendant et juste après une procédure de transfert

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9363731B1 (en) 2015-01-09 2016-06-07 Qualcomm Incorporated Traffic volume measurement reporting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114339749B (zh) * 2021-09-29 2023-09-19 荣耀终端有限公司 降低掉话率的方法及终端

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1842214A (zh) * 2005-03-31 2006-10-04 日本电气株式会社 移动通信系统、竞争救济方法以及无线网络控制器
WO2013173380A1 (fr) * 2012-05-14 2013-11-21 Qualcomm Incorporated Système et appareil destinés à des améliorations multirab en maintenant actifs un appel vocal à commutation de circuit et une session de données à commutation de paquets
CN103763729A (zh) * 2014-01-08 2014-04-30 北京拓明科技有限公司 一种数据业务重选延迟的判断方法及系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9125211B2 (en) * 2009-10-06 2015-09-01 Qualcomm Incorporated System and methods for traffic volume reporting during radio access network connection setup

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1842214A (zh) * 2005-03-31 2006-10-04 日本电气株式会社 移动通信系统、竞争救济方法以及无线网络控制器
WO2013173380A1 (fr) * 2012-05-14 2013-11-21 Qualcomm Incorporated Système et appareil destinés à des améliorations multirab en maintenant actifs un appel vocal à commutation de circuit et une session de données à commutation de paquets
CN103763729A (zh) * 2014-01-08 2014-04-30 北京拓明科技有限公司 一种数据业务重选延迟的判断方法及系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9363731B1 (en) 2015-01-09 2016-06-07 Qualcomm Incorporated Traffic volume measurement reporting
WO2016111845A1 (fr) * 2015-01-09 2016-07-14 Qualcomm Incorporated Rapport de mesure de volume de trafic

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