WO2013103242A1 - Procédé et appareil de commande du fonctionnement dans un mode de transfert de paquets - Google Patents

Procédé et appareil de commande du fonctionnement dans un mode de transfert de paquets Download PDF

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Publication number
WO2013103242A1
WO2013103242A1 PCT/KR2013/000022 KR2013000022W WO2013103242A1 WO 2013103242 A1 WO2013103242 A1 WO 2013103242A1 KR 2013000022 W KR2013000022 W KR 2013000022W WO 2013103242 A1 WO2013103242 A1 WO 2013103242A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
drx cycle
mode
cycle mode
pacch
Prior art date
Application number
PCT/KR2013/000022
Other languages
English (en)
Inventor
Satish Nanjunda Swamy Jamadagni
Pradeep Krishnamurthy Hirisave
Sarvesha Anegundi Ganapathi
Original Assignee
Samsung Electronics Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Publication of WO2013103242A1 publication Critical patent/WO2013103242A1/fr

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    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless network systems, and more particularly relates to method and apparatus for controlling operation in a packet transfer mode.
  • Figure 5b is a process flow diagram illustrating another exemplary method of re-establishing a new TBF during the short DRX cycle mode or the long DRX cycle mode, according to one embodiment.
  • Figure 8 is a block diagram of a user equipment, such as those shown in Figure 1, showing various components for implementing embodiments of the present subject matter.
  • the first event, the second event and third event may correspond to a number of dummy control blocks transmitted, expiry of timer value, number of downlink control blocks received, number of uplink control blocks transmitted, steal existing header, new header structure introduced, a new header structure modified, piggy backing and so on. It can be noted that, the first event, the second event and the third event may be different occurrence of the same event or different events.
  • a packet associated control channel is monitored when the user equipment is operating in the short DRX cycle mode.
  • a PACCH is a unidirectional logical channel that is used to carry signalling during uplink or downlink packet data transfer.
  • the PACCH is dynamically allocated on a block basis.
  • the user equipment 104 may read the PACCH after every pre-determined number of radio block periods during the short DRX cycle mode.
  • the base station 102 may indicate the pre-determined number of radio block periods to be skipped between two consecutive reads during the short DRX cycle mode.
  • the base station 102 may transmit a PACCH block on the PACCH to determine whether the user equipment 104 has any data to be transmitted in uplink.
  • the user equipment 104 monitors the PACCH to determine whether there are any PACCH blocks transmitted on the PACCH so the user equipment 104 can request for resources to the base station 102 if there are data packets to be transmitted.
  • occurrence of a second pre-defined event is detected during the short DRX cycle mode. For example, the second pre-defined event is said to have triggered when a short DRX timer is expired.
  • the base station 102 may provide a short DRX timer value indicative of duration for which the user equipment 104 should remain in the short DRX cycle mode upon transition from the extended TBF uplink mode. Accordingly, the user equipment 104 may operate in the short DRX cycle mode until the short DRX timer is expired.
  • the base station 102 can reuse resources allocated for data transmission during uplink TBF mode or extended uplink TBF mode. However, if the user equipment 104 requests to allocate resources for uplink data transmission, the base station 102 assigns new resources during the short/long DRX cycle mode for uplink data transmission.
  • the threshold value corresponds to a maximum number of dummy control blocks to be received in the downlink direction during the extended uplink TBF mode.
  • a packet associated control channel is monitored when the user equipment 104 is operating in the short DRX cycle mode.
  • the user equipment 104 may read the PACCH after every pre-determined number of radio block periods during the short DRX cycle mode.
  • the base station 102 may indicate the pre-determined number of radio block periods to be skipped between two consecutive reads during the short DRX cycle mode.
  • the base station 102 may transmit an assignment message on the PACCH when the base station 102 has any data to be transmitted in downlink.
  • the user equipment 104 monitors the PACCH to determine whether there are any assignment messages transmitted on the PACCH so the user equipment 104 can re-establish a new TBF with the base station 102.
  • occurrence of a second event is detected during the short DRX cycle mode.
  • the second pre-defined event is said to have triggered when a short DRX timer is expired.
  • the base station 102 may provide a short DRX timer value indicative of duration for which the user equipment 104 should remain in the short DRX cycle mode upon transition from the extended TBF uplink mode. Accordingly, the user equipment 104 may operate in the short DRX cycle mode until the short DRX timer is expired.
  • the user equipment 104 is transitioned from the short DRX cycle mode to a long DRX cycle mode.
  • a packet associated control channel (PACCH) is monitored when the user equipment 104 is operating in the long DRX cycle mode.
  • PACCH packet associated control channel
  • occurrence of a third event is detected during the long DRX cycle mode.
  • the third pre-defined event is said to have triggered when a long DRX timer is expired.
  • the base station 102 may provide a long DRX timer value indicative of duration for which the user equipment 104 should remain in the long DRX cycle mode upon transition from the short DRX cycle mode. Accordingly, the user equipment 104 may operate in the long DRX cycle mode until the expiry of the long DRX timer.
  • the user equipment is transitioned from the long DRX cycle mode to a packet idle mode.
  • Figure 4a is a schematic representation 400 illustrating transitioning between various modes in a packet transfer mode 401, according to one embodiment.
  • the user equipment 104 After the end of uplink TBF mode 402, the user equipment 104 enters into an extended uplink TBF mode 404.
  • the user equipment 104 transmits an indication message 403 with a CV bit set to value ‘0’ to indicate transition from the uplink TBF mode 402 to the extended uplink TBF mode 404.
  • the extended uplink TBF mode 402 the user equipment 104 transmits dummy blocks in uplink.
  • the user equipment 104 remains in the extended uplink TBF mode 404 till a first pre-defined event 406 is triggered.
  • the user equipment 104 reads PACCH after every preset number of radio block periods to determine whether a PACCH block is transmitted by the base station 102.
  • the user equipment 104 remains in the short DRX cycle mode 408 till a second pre-defined event 410 is triggered.
  • the second pre-defined event 408 is said to have triggered when a short DRX timer is expired.
  • the user equipment 104 transitions from the short DRX cycle mode 408 to a long DRX cycle mode 412. It can be noted that the period of the long DRX cycle mode 412 is longer than the period of the short DRX cycle mode 408.
  • the user equipment 104 reads PACCH after every preset number of radio block periods to determine whether PACCH block is transmitted by the base station 102.
  • the user equipment 104 remains in the long DRX cycle mode 412 till a third pre-defined event 414 is triggered.
  • the third pre-defined event 414 is said to have triggered when a long DRX timer is expired.
  • the user equipment 104 transitions from the long DRX cycle mode 412 to a packet idle mode 416. In this manner, the user equipment 104 manages battery power consumption during the packet transfer mode as well as ensures that a TBF can be easily re-established.
  • the user equipment 104 reads PACCH after every preset number of radio block periods to determine whether any assignment message is transmitted by the base station 102.
  • the user equipment 104 remains in the long DRX cycle mode 462 till a third pre-defined event 464 is triggered.
  • the third pre-defined event 464 is said to have triggered when a long DRX timer is expired.
  • the user equipment 104 transitions from the long DRX cycle mode 462 to a packet idle mode 466. In this manner, the user equipment 104 manages battery power consumption during the packet transfer mode as well as ensures that a TBF can be easily re-established.
  • the user equipment 104 operates in the short DRX cycle mode and the long DRX cycle mode after termination of a TBF mode/extended TBF mode and prior to entering a packet idle mode so that a new TBF can be easily re-established and battery power consumption can be significantly reduced at the user equipment during the packet transfer mode.
  • the user equipment 104 When the user equipment 104 reads the PACCH, at step 502, the user equipment 104 receives a PACCH block on the PACCH. At step 504, the user equipment 104 determines whether the PACCH block received on the PACCH is intended for itself. In one example, a new coding scheme (e.g., variant of MCS-0) may be user for transmitting the PACCH block. In another example, the base station transmits the PACCH block in a new RLC/MAC control block. Also, the base station may use a new set of new traffic flow identifiers (TFI) to multiplex user equipments in a DRX cycle mode.
  • TFI new traffic flow identifiers
  • Figure 5b is a process flow diagram 550 illustrating another exemplary method of re-establishing a new TBF during the short DRX cycle mode or the long DRX cycle mode, according to one embodiment.
  • the user equipment 104 reads the PACCH
  • the user equipment 104 receives a PACCH block on the PACCH.
  • the user equipment 104 determines whether the PACCH block received on the PACCH is intended for itself. If the PACCH block is intended for itself, then at step 556, the user equipment 104 determines whether any data is available for transmission in uplink. If no data is available for transmission in uplink, then at step 558, the user equipment 104 transmits a packet control acknowledgement message to the base station 102 in response to the PACCH block.
  • FIG. 6 is a process flowchart 600 illustrating an exemplary method of re-establishing a new TBF during the short DRX cycle mode or the long DRX cycle mode, according to another embodiment.
  • the user equipment 104 When the user equipment 104 is operating in a short/long DRX cycle mode during a packet transfer mode, the user equipment 104 periodically reads PACCH to determine whether any assignment message intended for the user equipment 104 is transmitted by the base station 102 on the PACCH.
  • the user equipment 104 reads the PACCH, at step 602, the user equipment 104 receives an assignment message on the PACCH.
  • the base station 102 transmits the assignment message on the PACCH when the base station 102 has data packets to be transmitted in downlink.
  • the memory 704 and the ROM 706 may be volatile memory and non-volatile memory.
  • the memory 704 includes the packet transfer mode management module 106 for managing transitions within a packet transfer mode associated with the user equipment 104, according to one or more embodiments described above.
  • a variety of computer-readable storage media may be stored in and accessed from the memory elements.
  • Memory elements may include any suitable memory device(s) for storing data and machine-readable instructions, such as read only memory, random access memory, erasable programmable read only memory, electrically erasable programmable read only memory, hard drive, removable media drive for handling compact disks, digital video disks, diskettes, magnetic tape cartridges, memory cards, and the like.
  • the processor 802 means any type of computational circuit, such as, but not limited to, a microprocessor, a microcontroller, a complex instruction set computing microprocessor, a reduced instruction set computing microprocessor, a very long instruction word microprocessor, an explicitly parallel instruction computing microprocessor, a graphics processor, a digital signal processor, or any other type of processing circuit.
  • the processor 802 may also include embedded controllers, such as generic or programmable logic devices or arrays, application specific integrated circuits, single-chip computers, smart cards, and the like.
  • the transceiver 808 may be capable of receiving one or more traffic/control messages from the base station 102 and transmitting one or more traffic/control messages to the base station 102.
  • the bus 810 acts as interconnect between various components of the user equipment 104a.
  • the components such as the display 812, the input device 814, and the cursor control 816 are well known to the person skilled in the art and hence the explanation is thereof omitted.

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

Abstract

La présente invention concerne un procédé et un appareil de commande du fonctionnement dans un mode de transfert de paquets. Conformément à un mode de réalisation, un équipement utilisateur détecte un premier événement et passe d'un mode de Flux de Blocs Temporaires (TBF) à un mode de Cycle Discontinu Court (DRX). Pendant le mode de cycle DRX court, l'équipement utilisateur surveille un Canal de Commande Associé aux Paquets (PACCH) de manière à ce qu'un nouveau flux TBF puisse être rétabli pendant le mode de cycle DRX court si des paquets de données sont mis en tampon pour la transmission montante et/ou descendante. De plus, l'équipement utilisateur détecte un deuxième événement et passe du mode de cycle DRX court au mode de cycle DRX long. Pendant le mode de cycle DRX long, l'équipement utilisateur surveille le canal PACCH afin qu'un nouveau TBF puisse être rétabli pendant le mode de cycle DRX long. L'équipement utilisateur détecte ensuite un troisième événement et passe du mode de cycle DRX long à un mode de paquets inactif.
PCT/KR2013/000022 2012-01-03 2013-01-03 Procédé et appareil de commande du fonctionnement dans un mode de transfert de paquets WO2013103242A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN43CH2012 2012-01-03
IN43/CHE/2012 2012-01-03

Publications (1)

Publication Number Publication Date
WO2013103242A1 true WO2013103242A1 (fr) 2013-07-11

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090232054A1 (en) * 2008-03-14 2009-09-17 Interdigital Patent Holdings, Inc. Behavior for wireless transmit/receive unit and mac control elements for lte drx operations
US20090285141A1 (en) * 2008-04-25 2009-11-19 Zhijun Cai Method and system for the control of discontinuous reception in a wireless network
US20100118815A1 (en) * 2008-11-10 2010-05-13 Samsung Electronics Co. Ltd. Discontinuous reception control method of user equipment in wireless communication system
US20110038348A1 (en) * 2009-08-14 2011-02-17 Borsella Remo Methods and apparatus for controlling discontinuous reception

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090232054A1 (en) * 2008-03-14 2009-09-17 Interdigital Patent Holdings, Inc. Behavior for wireless transmit/receive unit and mac control elements for lte drx operations
US20090285141A1 (en) * 2008-04-25 2009-11-19 Zhijun Cai Method and system for the control of discontinuous reception in a wireless network
US20100118815A1 (en) * 2008-11-10 2010-05-13 Samsung Electronics Co. Ltd. Discontinuous reception control method of user equipment in wireless communication system
US20110038348A1 (en) * 2009-08-14 2011-02-17 Borsella Remo Methods and apparatus for controlling discontinuous reception

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