WO2011042869A1 - Prévention de l'activation de contrôle d'accès au support avec des paramètres incorrects pendant le transfert - Google Patents

Prévention de l'activation de contrôle d'accès au support avec des paramètres incorrects pendant le transfert Download PDF

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Publication number
WO2011042869A1
WO2011042869A1 PCT/IB2010/054509 IB2010054509W WO2011042869A1 WO 2011042869 A1 WO2011042869 A1 WO 2011042869A1 IB 2010054509 W IB2010054509 W IB 2010054509W WO 2011042869 A1 WO2011042869 A1 WO 2011042869A1
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Prior art keywords
message
protocol layer
receiving
related activities
control protocol
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PCT/IB2010/054509
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English (en)
Inventor
Antti-Eemeli Suronen
Mika Petteri Kaukoranta
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Nokia Corporation
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Publication of WO2011042869A1 publication Critical patent/WO2011042869A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the exemplary and non-limiting embodiments of this invention relate generally to wireless communication systems, methods, devices and computer programs and, more specifically, relate to controlling MAC protocol layer functionality during a handover procedure.
  • eNB E-UTRAN Node B (evolved Node B)
  • LTE E-UTRAN evolved UTRAN
  • E-UTRAN LTE long term evolution of UTRAN
  • UE user equipment such as a mobile station or mobile terminal
  • E-UTRAN also referred to as UTRAN-LTE or as E-UTRA
  • the DL access technique is OFDMA
  • the UL access technique is SC-FDMA.
  • FIG. 1 reproduces Figure 4-1 of 3GPP TS 36.300, and shows the overall architecture of the E- UTRAN system.
  • the E-UTRAN system includes eNBs, providing the E-UTRA user plane (PDCPRLC/MAC/PHY) and control plane (RRC) protocol terminations towards the UE (not shown).
  • the eNBs are interconnected with each other by means of an X2 interface.
  • the eNBs are also connected by means of an S 1 interface to an EPC, more specifically to a MME (Mobility Management Entity) by means of a SI MME interface and to a Serving Gateway (SGW) by means of a SI interface.
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • the S I interface supports a many-to-many relationship between MMEs/S-GW and eNBs.
  • the eNB hosts the following functions:
  • RRM Radio Bearer Control
  • Radio Admission Control Radio Admission Control
  • Connection Mobility Control Dynamic allocation of resources to UEs in both UL and DL (scheduling);
  • the network issues commands to a user equipment (LIE) instructing it to change operation from a first cell in which the UE is currently operating (the source cell), to a second cell (the target cell).
  • LIE user equipment
  • the NW should maintaining a capability to transfer user plane data (e.g., a PDCP SDU carrying IP-packets) with minimized caps.
  • a handover procedure may be controlled by the RRC protocol layer in the UE (e. g. , after receiving a command from the NW, such as a RRCConnectionReconfiguration command including a mobilityControlInfo RRC PDU).
  • the RRC may control the operation of the packet data convergence protocol (PDCP), radio link control (RLC), medium access control (MAC) and the L 1 (physical layer etc.) layers. See further: 3 GPP TS 36.331 V8.6.0 (2009-06), chapters 5.1-5.4, chapter 9 and chapter 11.
  • the MAC reset procedure causes cancellation of ongoing MAC procedures but the MAC protocol layer reacts immediately to incoming triggers after the MAC layer is reset. This means that MAC procedures may be started again. For example, a buffer status reporting procedure may be triggered after the MAC reset if user data is received on a high priority logical channel (see 3 GPP T S 36.321 , chapter 5.4.5).
  • Buffer status reporting then triggers a scheduling request procedure (see TS 36.321, chapter 5.4.4) which causes the MAC layer to start a random access procedure (see 3GPP TS 36.321, chapter 5.1).
  • the MAC protocol layer may then resume operations using the previously configured parameters (excluding those MAC parameters that were removed during the MAC reset). This means that in case of a handover (HO) it is possible that the MAC layer resumes its operations in the target cell, except using the wrong parameters (e.g., the previously configured LI and MAC parameters).
  • the previously configured parameters excluding those MAC parameters that were removed during the MAC reset.
  • an exemplary embodiment of this invention provides a method for controlling MAC protocol layer functionality during a handover procedure.
  • the method includes receiving a reset command at a MAC protocol layer.
  • the MAC protocol layer is reset and wireless network access related activities at the MAC protocol layer are halted.
  • the method also includes receiving a first message at the MAC protocol layer. In response to receiving the first message, access related activities at the MAC protocol layer are resumed.
  • an exemplary embodiment of this invention provides an apparatus for controlling MAC protocol layer functionality during a handover procedure.
  • the apparatus includes one or more processors; and one or more memories including computer program code, the one or more memories and the computer program code configured to, with the one or more processors, cause the apparatus to perform operations.
  • the operations include to receive a reset command at a MAC protocol layer.
  • the operations also include, in response to receiving the reset command, to reset the MAC protocol layer and to prevent wireless network access related activities at the MAC protocol layer.
  • the operations also include to receive a first message at the MAC protocol layer.
  • the operations also include, in response to receiving the first message, to resume access related activities at the MAC protocol layer.
  • an exemplary embodiment of this invention provides a computer readable medium for controlling MAC protocol layer functionality during a handover procedure.
  • the computer readable medium is tangibly encoded with a computer program executable by a processor to perform actions.
  • the actions include receiving a reset command at a MAC protocol layer.
  • the MAC protocol layer is reset and wireless network access related activities at the MAC protocol layer are prevented.
  • the actions also include receiving a first message at the MAC protocol layer. In response to receiving the first message, access related activities at the MAC protocol layer are resumed.
  • an exemplary embodiment of this invention provides an apparatus for controlling MAC protocol layer functionality during a handover procedure.
  • the apparatus includes means for receiving a reset command at a MAC protocol layer.
  • the apparatus further includes means responsive to receiving the reset command, for resetting the MAC protocol layer and preventing wireless network access related activities at the MAC protocol layer.
  • the apparatus also includes means for receiving a first message at the MAC protocol layer and means responsive to receiving the first message, for resuming access related activities at the MAC protocol layer.
  • Figure 1 reproduces Figure 4-1 of 3GPP TS 36.300, and shows the overall architecture of the E-
  • Figure 2 shows a simplified block diagram of exemplary electronic devices that are suitable for use in practicing various exemplary embodiments of this invention.
  • Figure 3 shows a more particularized block diagram of an exemplary user equipment such as that shown at Figure 2.
  • Figure 4 demonstrates a simplified diagram of an example of a MAC protocol layer erroneously resuming operations in a target cell using the wrong, previously configured parameters.
  • Figure 5 demonstrates a simplified diagram of an exemplary method for a handover procedure in accordance with this invention.
  • Figure 6 is a logic flow diagram that illustrates the operation of an exemplary method, and a result of execution of computer program instructions embodied on a computer readable memory, in accordance with the exemplary embodiments of this invention.
  • MAC operation during a handover and before parameters are configured according to a handover command (e.g., a RRCConnectionReconfiguration command mcludingmobiUtyControunfo).
  • a handover command e.g., a RRCConnectionReconfiguration command mcludingmobiUtyControunfo.
  • Figure 2 Before describing in further detail exemplary embodiments of this invention, reference is made to Figure 2 for illustrating a simplified block diagram of various electronic devices and apparatus that are suitable for use in practicing exemplary embodiments of this invention.
  • a wireless network 235 is adapted for communication over a wireless link 232 with an apparatus, such as a mobile communication device which maybe referred to as a UE 210, via a network access node, such as a Node B (base station), and more specifically an eNB 220.
  • the network 235 may include a network control element (NCE) 240 that may include the MME/S-GW functionality shown in Figure 1, and which provides connectivity with a network, such as a telephone network and/or a data communications network (e.g., the internet 238).
  • NCE network control element
  • the UE 210 includes a controller, such as a computer or a data processor (DP) 214, a computer- readable memory medium embodied as a memory (MEM) 216 that stores a program of computer instructions (PROG) 218, and a suitable wireless interface, such as radio frequency (RF) transceiver 212, for bidirectional wireless communications with the eNB 220 via one or more antennas.
  • a controller such as a computer or a data processor (DP) 214
  • MEM computer- readable memory medium embodied as a memory (MEM) 216 that stores a program of computer instructions (PROG) 218, and a suitable wireless interface, such as radio frequency (RF) transceiver 212, for bidirectional wireless communications with the eNB 220 via one or more antennas.
  • DP data processor
  • PROG program of computer instructions
  • RF radio frequency
  • the eNB 220 also includes a controller, such as a computer or a data processor (DP) 224, a computer-readable memory medium embodied as a memory (MEM) 226 that stores a program of computer instructions (PROG) 228, and a suitable wireless interface, such as RF transceiver 222, for communication with the UE 210 via one or more antennas.
  • the eNB 220 is coupled via a data/control path 234 to the NCE 240.
  • the path 234 may be implemented as the S 1 interface shown in Figure 1.
  • the eNB 220 may also be coupled to other eNBs via data/control path 236, which may be implemented as the X2 interface shown in Figure 1.
  • the NCE 240 includes a controller, such as a computer or a data processor (DP) 244, a computer- readable memory medium embodied as a memory (MEM) 246 that stores a program of computer instructions (PROG) 248.
  • a controller such as a computer or a data processor (DP) 244, a computer- readable memory medium embodied as a memory (MEM) 246 that stores a program of computer instructions (PROG) 248.
  • DP data processor
  • MEM computer- readable memory medium embodied as a memory
  • PROG program of computer instructions
  • At least one of the PROGs 218, 228 and 248 is assumed to include program instructions that, when executed by the associated DP, enable the device to operate in accordance with exemplary embodiments of this invention, discussed below in greater detail.
  • various exemplary embodiments of this invention may be implemented at least in part by computer s oftwar e executable by the DP 214 of the UE 210 ; by the DP 224 of the eNB 220 ; and/ or by the DP 244 of the NCE 240, or by hardware, or by a combination of software and hardware (and firmware).
  • the UE 210 and the eNB 220 may also include dedicated processors, for example MAC controller 21 and RRC controller 225.
  • the various embodiments of the UE 210 can include, but are not limited to, cellular telephones, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
  • PDAs personal digital assistants
  • portable computers having wireless communication capabilities
  • image capture devices such as digital cameras having wireless communication capabilities
  • gaming devices having wireless communication capabilities
  • music storage and playback appliances having wireless communication capabilities
  • Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
  • the computer readable MEMs 216, 226 and 246 may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the DPs 214, 224 and 244 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multicore processor architecture, as non4imiting examples.
  • the wireless interfaces e.g., RF transceivers 212 and 222
  • Figure 3 illustrates further detail of an exemplary UE in both plan view (left) and sectional view (right), and the invention may be embodied in one or some combination of those more function-specific components.
  • the UE 210 has a graphical display interface 320 and a user interface 322 illustrated as a keypad but understood as also encompassing touch-screen technology at the graphical display interface 320 and voice-recognition technology received at the microphone 324.
  • a power actuator 326 controls the device being turned on and offby the user.
  • the exemplary UE 210 may have a camera 328 which is shown as being forward facing (e.g., for video calls) but may alternatively or additionally be rearward facing (e.g., for capturing images and video for local storage).
  • Thecamera328 is controlled by a shutter actuator 330 and optionally by a zoom actuator 332 which may alternatively function as a volume adjustment for the speaker(s) 334 when the camera 328 is not in an active mode.
  • the antennas 336 may be multi-band for use with other radios in the UE.
  • the operable ground plane for the antennas 336 is shown by shading as spanning the entire space enclosed by the UE housing though in some embodiments the ground plane may be limited to a smaller area, such as disposed on a printed wiring board on which the power chip 338 is formed.
  • the power chip 338 controls power amplification on the channels being transmitted and/or across the antennas that transmit simultaneously where spatial diversity is used, and amplifies the received signals.
  • the power chip 338 outputs the amplified received signal to the radio-frequency (RF) chip 340 which demodulates and downconverts the signal for baseband processing.
  • the baseband (BB) chip 342 detects the signal which is then converted to a bit-stream and finally decoded. Similar processing occurs in reverse for signals generated in the apparatus 210 and transmitted from it.
  • Signals to and from the camera 328 pass through an image/video processor 344 which encodes and decodes the various image frames.
  • a separate audio processor 346 may also be present controlling signals to and from the speakers 334 and the microphone 324.
  • the graphical display interface 320 is refreshed from a frame memory 348 as controlled by a user interface chip 350 which may process signals to and from the display interface 320 and/or additionally process user inputs from the keypad 322 and elsewhere.
  • the UE 210 may also include one or more secondary radios such as a wireless local area network radio WLAN 337 and a Bluetooth® radio 339, which may incorporate an antenna on-chip or be coupled to an off-chip antenna.
  • secondary radios such as a wireless local area network radio WLAN 337 and a Bluetooth® radio 339, which may incorporate an antenna on-chip or be coupled to an off-chip antenna.
  • various memories such as random access memory RAM 343, read only memory ROM 345, and in some embodiments removable memory such as the illustrated memory card 347.
  • the various programs 218 are stored in one or more of these memories . All of these components within the UE 210 are normally powered by a portable power supply such as a battery 349.
  • Processors 338, 340, 342, 344, 346, 350 may operate in a slave relationship to the main processor 214, 224, which may then be in a master relationship to them.
  • Embodiments of this invention are most relevant to the main processor 214, though it is noted that other embodiments need not be disposed there but may be disposed across various chips and memories as shown or disposed within another processor that combines some of the functions described above for Figure 3. Any or all of these various processors of Fig. 3 access one or more of the various memories, which may be on-chip with the processor or separate therefrom.
  • Similar function-specific components that are directed toward communications over a network broader than a piconet may also be disposed in exemplary embodiments of the access node 220, which may have an array of tower-mounted antennas rather than the two shown at Fig. 3.
  • Figure 4 demonstrates a simplified diagram of an example of a MAC protocol layer erroneously resuming operations in a target cell using the wrong, previously configured parameters.
  • the UE 210 is performing a handover process.
  • the RRC starts to synchronize with the target eNB.
  • the LI (physical) layer no download data is expected due to the eNB waiting until the completion of the HO .
  • the RRC sends a signal in order to reset the MAC. This causes cancellation of any ongoing MAC procedures (e.g., all UL grants and DL assignments are removed) and the MAC protocol layer is placed in a reset state.
  • RACH random channel
  • the RRC re-establishes the PDCP layer.
  • the PDCP layer waits for the security configuration of the target cell, which may include halting uplink transmissions until the configuration is provided.
  • the RRC re-establishes the RLC layer.
  • the RLC layer discards uplink data.
  • the RRC performs defined actions, for example applying parameters for the new C-RNTI and dedicated RACH and deriving new security keys.
  • the RRC provides the new security configuration to the PDCP layer.
  • the PDCP layer receives the new security configuration it is possible for random access to be initiated by user data, for example at C. Such random access is acceptable since it uses the proper configuration for the target cell.
  • a handover is indicated (e.g., by signaling) to the MAC layer when a MAC reset is requested by the RRC. Then, the MAC halts activities until either when data from SRBO/SRBl is received or optionally when the PDCP re- establishment has been completed. This ensures that the RRC has applied the correct configuration to the MAC (and other layers) prior to the MAC resuming activities
  • the handover is indicated to the MAC when a MAC reset is requested by the RRC as above.
  • MAC activity is then halted until further notification is received.
  • This notification may come directly from the RRC and/or via another layer.
  • a message e.g., a "RRCConnectionReconfigurationComplete" massage
  • the message may be sent on the SRB 1 from the RRC to the PDCP, then the message is sent in a RLC SDU from the PDCP to the RLC where the message is sent to the MAC in an MAC SDU on the SRB1.
  • the MAC is halted as shown above (alternatively, access activities are prevented from occurring) and data radio bearers in the RLC are also suspended (e.g., via a RRC command) so that buffer status reports by the MAC are not triggered.
  • the RLC is suspended prior to the MAC reset operation and may be continued when the RLC is re-established.
  • Figure 5 demonstrates a simplified diagram of an exemplary method for a handover procedure in accordance with this invention.
  • the R C resets the MAC layer indicating that a handover is being performed.
  • the MAC performs the reset actions and seizes any further actions.
  • user data is generated (e.g., by a high level layer) and sent to the MAC. Since the MAC is seized, the MAC does not accept the user data and no further actions are performed at the MAC layer based on the data.
  • the PDCP informs the MAC that the MAC may continue operation.
  • the MAC layer then resumes activities.
  • the MAC receives data it may initiate random access. Since the PDCP is configured with the configuration of the target cell, this random access uses the proper configuration for the target cell. Therefore, the MAC layer does not require explicit command from upper layers in order to resume operations.
  • the MAC resumes activity in response to receiving a MAC SDU on the SRB1.
  • the MAC SDU shown includes a "RRCConnectionReconfigurationComplete" message. This message is sent by the UE to confirm the handover after the UE has successfully accessed the target cell.
  • the exemplary embodiments of this invention provide a method, apparatus and computer program(s) to control MAC protocol layer functionality during a handover procedure.
  • FIG. 6 is a logic flow diagram that illustrates the operation of a method, and a result of execution of computer program instructions, in accordance with the exemplary embodiments of this invention.
  • a method performs, at Block 610, a step of receiving a reset command at a MAC protocol layer.
  • the MAC protocol layer is reset and wireless network access related activities in the MAC protocol layer are prevented, at Block620.
  • Block 630 a step ofreceiving a first message at the MAC protocol layer is performed.
  • access related activities are resumed at the MAC protocol layer, at Block 640.
  • An exemplary embodiment in accordance with this invention is a method for controlling MAC protocol layer functionality during a handover procedure.
  • the method includes receiving (e.g., at a processor) a reset command at a MAC protocol layer.
  • the MAC protocol layer is reset (e.g., by a processor) and wireless network access related activities at the MAC protocol layer are prevented.
  • the method also includes receiving (e.g., at a processor) a first message at the MAC protocol layer. In response to receiving the first message, access related activities at the MAC protocol layer are resumed (e.g., by a processor).
  • the first message includes an indication that a PDCP re-establishment has been completed.
  • receiving data at the MAC protocol layer also includes determining whether access related activities are prevented; in response to a determination that access related activities are prevented, preventing sending the data to the LI layer; and in response to a determination that access related activities are not prevented, initiating random access procedures.
  • the first message is a handover command message.
  • the handover command message may include a RRCConnectionReconfiguration message and/or a mobilityControlInfo information element.
  • the first message includes user data
  • the method also includes initiating a random access channel; and transmitting the user data using the random access channel.
  • the method is performed during a handover procedure.
  • the first message is received via SRB 1.
  • the method also includes receiving new access related parameters, where resuming access related activities uses the new access related parameters.
  • the first message is a control/configuration message.
  • the first message is received from a higher protocol layer.
  • An additional exemplary embodiment in accordance with this invention is an apparatus for controlling MAC protocol layer functionality during a handover procedure.
  • the apparatus includes a receiver configured to receive a reset command at a MAC protocol layer.
  • the apparatus also includes a controller configured, in response to receiving the reset command, to reset the MAC protocol layer and to prevent wireless network access related activities at the MAC protocol layer.
  • the receiver is also configured to receive a first message at the MAC protocol layer.
  • the controller is also configured to, in response to receiving the first message, resume access related activities at the MAC protocol layer.
  • the first message includes an indication that a PDCP re-establishment has been completed.
  • the receiver is configured to receive data at the MAC protocol layer; the controller is also configured to determine whether access related activities are prevented; in response to a determination that access related activities are prevented, to prevent sending the data to the LI layer; and, in response to a determination that access related activities are not prevented, to initiate random access procedures.
  • the first message is a handover command message.
  • the handover command message may include a RRCConnectionReconfiguration message and/or a mobilityControlInfo information element.
  • the first message includes user data
  • the controller is also configured to initiate a random access channel; and to cause the user data to be transmitted using the random access channel.
  • the receiver is configured to receiver new access related parameters, where resuming access related activities uses the new access related parameters.
  • the first message is received via SRB 1.
  • the first message is a control/configuration message.
  • the first message is received from a higher protocol layer.
  • a further exemplary embodiment in accordance with this invention is an apparatus for controlling MAC protocol layer functionality during a handover procedure.
  • the apparatus includes one or more processors; and one or more memories including computer program code, the one or more memories and the computer program code configured to, with the one or more processors, cause the apparatus to perform operations.
  • the operations include to receive a reset command at a MAC protocol layer.
  • the operations also include, in response to receiving the reset command, to reset the MAC protocol layer and to prevent wireless network access related activities at the MAC protocol layer.
  • the operations also include to receive a first message at the MAC protocol layer.
  • the operations also include, in response to receiving the first message, to resume access related activities at the MAC protocol layer.
  • the first message includes an indication that a PDCP re-establishment has been completed.
  • the one or more memories and the computer program code are further configured to cause the apparatus to receive data at the MAC protocol layer; to determine whether access related activities are prevented; in response to a determination that access related activities are prevented, to prevent sending the data to the LI layer; and, in response to a determination that access related activities are not prevented, to initiate random access procedures.
  • the first message is a handover command message.
  • the handover command message may include a RRCConnectionReconfiguration message and/or a mobilityControlInfo information element.
  • the first message includes user data
  • the one or more memories and the computer program code are further configured to cause the apparatus to initiate a random access channel; and to cause the user data to be transmitted using the random access channel.
  • the one or more memories and the computer program code are further configured to cause the apparatus to receiver new access related parameters, where resuming access related activities uses the new access related parameters.
  • the first message is received via SRB l.
  • the first message is a control/configuration message.
  • the first message is received from a higher protocol layer.
  • An additional exemplary embodiment in accordance with this invention is a computer readable medium for controlling MAC protocol layer functionality during a handover procedure.
  • the computer readable medium is tangibly encoded with a computer program executable by a processor to perform actions.
  • the actions include receiving a reset command at a MAC protocol layer. In response to receiving the reset command, the MAC protocol layer is reset and wireless network access related activities at the MAC protocol layer are prevented.
  • the actions also include receiving a first message at the MAC protocol layer. In response to receiving the first message, access related activities at the MAC protocol layer are resumed.
  • the first message includes an indication that a PDCP re-establishment has been completed.
  • the actions also include receiving data at the MAC protocol layer; determining whether access related activities are prevented; in response to a determination that access related activities are prevented, preventing sending the data to the LI layer; and in response to a determination that access related activities are not prevented, initiating random access procedures.
  • the first message is a handover command message.
  • the handover command message may include a RRCConnectionReconfiguration message and/or a mobilityControlInfo information element.
  • the first message includes user data
  • the actions also include initiating a random access channel; and transmitting the user data using the random access channel.
  • the actions are performed during a handover procedure.
  • the first message is received via SRB1.
  • the actions also include receiving new access related parameters, where resuming access related activities uses the new access related parameters.
  • the first message is a control/configuration message.
  • the first message is received from a higher protocol layer.
  • the computer readable medium is a non-transitory computer readable medium.
  • a further exemplary embodiment in accordance with this invention is an apparatus for controlling MAC protocol layer functionality during a handover procedure.
  • the apparatus includes means for receiving a reset command at a MAC protocol layer (e.g., a receiver).
  • the apparatus further includes means responsive to receiving the reset command, for resetting the MAC protocol layer and preventing wireless network access related activities at the MAC protocol layer.
  • the apparatus also includes means for receiving a first message at the MAC protocol layer (e.g., a receiver) and means responsive to receiving the first message, for resuming access related activities at the MAC protocol layer.
  • the first message includes an indication that a PDCP re-establishment has been completed.
  • the apparatus also includes means for receiving data at the MAC protocol layer (e.g., a receiver); means for determining whether access related activities are prevented (e.g., a processor); means responsive to a determination that access related activities are prevented, for preventing sending the data to an LI layer(e.g., a processor); and, means responsive to a determination that access related activities are not prevented, for initiating random access procedures (e.g., a processor).
  • a MAC protocol layer e.g., a receiver
  • means for determining whether access related activities are prevented e.g., a processor
  • means responsive to a determination that access related activities are prevented for preventing sending the data to an LI layer(e.g., a processor); and, means responsive to a determination that access related activities are not prevented, for initiating random access procedures (e.g., a processor).
  • the first message is a handover command message.
  • the handover command message may include a RRCConnectionReconfiguration message and/or a mobilityControlInfo information element.
  • the first message includes user data
  • the apparatus also includes means for initiating a random access channel (e.g., a processor); and means for transmitting the user data using the random access channel (e.g., a transmitter).
  • the apparatus also includes means for receiving new access related parameters (e.g., a receiver), where resuming access related activities uses the new access related parameters.
  • the first message is received via SRB 1.
  • the reset command receiving means is a receiver; the resetting and preventing means is a processor; the first message receiving means is a receiver; and the resuming means is a processor.
  • the first message is a control/configuration message.
  • the first message is received from a higher protocol layer.
  • the various exemplary embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • various aspects of the exemplary embodiments of this invention may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as nonlimiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof
  • the integrated circuit, or circuits may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or data processors, a digital signal processor or processors, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this invention.
  • connection means any connection or coupling, either direct or indirect, between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are “connected” or “coupled” together.
  • the coupling or connection between the elements can be physical, logical, or a combination thereof.
  • two elements may be considered to be “connected” or “coupled” together by the use of one or more wires, cables and/or printed electrical connections, as well as by the use of electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency region, the microwave region and the optical (both visible and invisible) region, as several non-limiting and non-exhaustive examples.
  • non-transitory medium any medium which may be used to store data.
  • Such media include ROM, RAM, flash memory, and any other suitable data storage technology.
  • the various names used for the described parameters and messages are not intended to be limiting in any respect, as these parameters may be identified by any suitable names.
  • the various names assigned to different channels e.g., RACH, etc. are not intended to be limiting in anyrespect, as these various channels may be identified by any suitable names.

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

Abstract

L'invention concerne un procédé de commande de fonctionnalité de couche de protocole de contrôle d'accès au support (MAC) pendant une procédure de transfert. Ce procédé consiste à recevoir une commande de réinitialisation au niveau d'une couche de protocole MAC. En réponse à la réception de la commande de réinitialisation, la couche de protocole MAC est réinitialisée et des activités relatives à un accès à un réseau sans fil au niveau de la couche de protocole MAC sont arrêtées. Le procédé selon l'invention consiste également à recevoir un premier message au niveau de la couche de protocole MAC. En réponse à la réception du premier message, les activités relatives à l'accès au niveau de la couche de protocole MAC sont reprises. L'invention concerne également un appareil et des supports lisibles par ordinateur.
PCT/IB2010/054509 2009-10-05 2010-10-05 Prévention de l'activation de contrôle d'accès au support avec des paramètres incorrects pendant le transfert WO2011042869A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27828109P 2009-10-05 2009-10-05
US61/278,281 2009-10-05

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WO2011042869A1 true WO2011042869A1 (fr) 2011-04-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025842A2 (fr) * 2002-09-12 2004-03-25 Interdigital Technology Corporation Systeme d'extraction efficace de donnees mises en memoire tampon sur un noeud b suite a une remise a zero de la couche mac
WO2005086457A1 (fr) * 2004-03-05 2005-09-15 Samsung Electronics Co., Ltd. Structure de protocole de commande d'acces au support divisee, procede de transmission et de reception de donnees, et procede et systeme de transfert intercellulaire utilisant la structure dans un systeme de communication sans fil
WO2009045901A2 (fr) * 2007-09-28 2009-04-09 Qualcomm Incorporated Procédés pour des optimisations de transfert dans la station de base
WO2010017376A1 (fr) * 2008-08-08 2010-02-11 Interdigital Patent Holdings, Inc. Réinitialisation et reconfiguration d’une entité mac
EP2182765A2 (fr) * 2008-11-03 2010-05-05 HTC Corporation Procédé de reconfiguration de paramètres dans un système de communication sans fil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025842A2 (fr) * 2002-09-12 2004-03-25 Interdigital Technology Corporation Systeme d'extraction efficace de donnees mises en memoire tampon sur un noeud b suite a une remise a zero de la couche mac
WO2005086457A1 (fr) * 2004-03-05 2005-09-15 Samsung Electronics Co., Ltd. Structure de protocole de commande d'acces au support divisee, procede de transmission et de reception de donnees, et procede et systeme de transfert intercellulaire utilisant la structure dans un systeme de communication sans fil
WO2009045901A2 (fr) * 2007-09-28 2009-04-09 Qualcomm Incorporated Procédés pour des optimisations de transfert dans la station de base
WO2010017376A1 (fr) * 2008-08-08 2010-02-11 Interdigital Patent Holdings, Inc. Réinitialisation et reconfiguration d’une entité mac
EP2182765A2 (fr) * 2008-11-03 2010-05-05 HTC Corporation Procédé de reconfiguration de paramètres dans un système de communication sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Text proposal on MAC reset and reconfiguration", 3GPP TSG-RAN2 MEETING #62BIS; R2-083143, 30 June 2008 (2008-06-30) - 4 July 2008 (2008-07-04), WARSAW, POLAND, XP050140575 *

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