WO2005079095A1 - Procede et programme d'ordinateur permettant de commander des ressources radio, equipement utilisateur, unite de commande de reseau radio et station de base - Google Patents

Procede et programme d'ordinateur permettant de commander des ressources radio, equipement utilisateur, unite de commande de reseau radio et station de base Download PDF

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Publication number
WO2005079095A1
WO2005079095A1 PCT/FI2005/000097 FI2005000097W WO2005079095A1 WO 2005079095 A1 WO2005079095 A1 WO 2005079095A1 FI 2005000097 W FI2005000097 W FI 2005000097W WO 2005079095 A1 WO2005079095 A1 WO 2005079095A1
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WIPO (PCT)
Prior art keywords
high speed
suspension
time periods
control channel
suspending
Prior art date
Application number
PCT/FI2005/000097
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English (en)
Inventor
Karri Ranta-Aho
Antti Toskala
Original Assignee
Nokia Corporation
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.)
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34863176&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2005079095(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from FI20040244A external-priority patent/FI20040244A0/fi
Application filed by Nokia Corporation filed Critical Nokia Corporation
Priority to EP05708177A priority Critical patent/EP1719379A1/fr
Priority to JP2006553605A priority patent/JP4551902B2/ja
Priority to CN2005800105765A priority patent/CN1939082B/zh
Priority to AU2005212893A priority patent/AU2005212893C1/en
Publication of WO2005079095A1 publication Critical patent/WO2005079095A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the invention relates to a method of controlling radio resources in a wireless telecommunications system, a radio network controller for controlling radio resources in a wireless telecommunications system, a computer program for controlling radio resources in a wireless telecommunications system, a user equipment of a wireless telecommunications system, and a base station of a wireless telecommunications system.
  • High Speed Downlink Packet Access is a packet- based data service in a WCDMA (Wideband Code Division Multiple Access) downlink with typical data transmission capacity from a few megabits per second to more than ten megabits per second.
  • An HSDPA connection includes a high speed physical downlink shared channel (HS-PDSCH) for data packet transfer and a high speed dedicated physical control channel (HS-DPCCH) for uplink signalling.
  • HS-PDSCH high speed physical downlink shared channel
  • HS-DPCCH high speed dedicated physical control channel
  • the HS-PDSCH and the HS-DPCCH are implemented on top of WCDMA (Wideband Code Division Multiple Access) dedicated channels, such as the DPDCH (Dedicated Physical Data Channel) and the DPCCH (Dedicated Physical Control Channel), and thus share the shared radio resources, such as power resources, with the WCDMA dedicated channels.
  • WCDMA Wideband Code Division Multiple Access
  • the sharing of the radio resources results in inflexibility in radio resource allocation to the HSDPA channels and the WCDMA dedicated channels. Therefore, improvements are needed for radio resource control in a wireless telecommunications system supporting an HSDPA operation.
  • An object of the invention is to provide an improved method, user equipment, base station, radio network controller, and computer program.
  • a method of controlling radio resources in a wireless telecommunications system including: communicating data packets from a base station to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and suspending the high speed downlink packet access connection in a plurality of predefined suspension time periods while maintaining the high speed downlink packet access connection in a standby state.
  • a method of controlling radio resources in a wireless telecommunications system including: communicating data packets from a base station to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and suspending the transmission of the high speed dedicated physical control channel in a plurality of predefined suspension time periods while maintaining the high speed dedicated physical control channel in a standby state.
  • a base station of a wireless telecommunications system including: a communicating unit for communicating data packets to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and a connection suspending unit connected to the communicating unit, for suspending the high speed downlink packet access connection in a plurality of predefined suspension time periods while maintaining the high speed downlink packet access connection in a standby state.
  • user equipment of a wireless telecommunications system including: a communicating unit for communicating data packets from a base station over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and a connection suspending unit connected to the communicating unit, for suspending the high speed downlink packet access connection in a plurality of predefined suspension time periods while maintaining the high speed downlink packet access connection in a standby state.
  • user equipment of a wireless telecommunications system including: a communicating unit for communicating data packets from a base station over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and a connection suspending unit connected to the communicating unit, for suspending the transmission of the high speed dedicated physical control channel in a plurality of predefined suspension time periods while maintaining the high speed dedicated physical control channel in a standby state.
  • a radio network controller for controlling radio resources in a wireless telecommunications system where data packets are communicated from a base station to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling, the radio network controller including a suspension control unit for controlling the suspension of the high speed downlink packet access connection in a plurality of predefined suspension time periods with suspension parameters while maintaining the high speed downlink packet access connection in a standby state, the suspension parameters characterizing temporal characteristics of a plurality of suspension time periods; and a signalling unit connected to the suspension control unit, for signalling the suspension parameters.
  • a radio network controller for controlling radio resources in a wireless telecommunications system where data packets are communicated from a base station to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling, the radio network controller including a suspension control unit for controlling suspension of the transmission of the high speed dedicated physical control channel in a plurality of predefined suspension time periods with suspension parameters while maintaining the high speed dedicated physical control channel in a standby state, the suspension parameters characterizing temporal characteristics of a plurality of suspension time periods; and a signalling unit connected to the suspension control unit, for signalling the suspension parameters.
  • a computer program for controlling radio resources in a wireless tele- communications system including: communicating data packets from a base station to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and suspending the high speed downlink packet access connection in a plurality of predefined suspension time periods while maintaining the high speed downlink packet access connection in a standby state.
  • a computer program for controlling radio resources in a wireless telecommunications system the computer program executing a computer process communicating data packets from a base station to user equipment over a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transfer and a high speed dedicated physical control channel for uplink signalling; and suspending the transmission of the high speed dedicated physical control channel in a plurality of predefined suspension time periods while maintaining the high speed dedicated physical control channel in a standby state.
  • Preferred embodiments of the invention are described in the dependent claims.
  • the method, user equipment, base station, network controller and computer program of the invention provide several advantages.
  • the flexibility of the radio resource allocation is increased, thus enabling an increase in the number of simultaneous high speed downlink packet access users served by a base station, the reuse of the base station resources, and the allocation of power resources for the WCDMA dedicated channels.
  • Figure 1 shows an example of the structure of a wireless telecommunications system
  • Figure 2 illustrates the elements of an HSDPA connection
  • Figure 3 shows a time structure of an HSDPA connection
  • Figure 4 shows examples of the structure of a radio network controller, the structure of a base station, and the structure of user equipment
  • Figure 5A shows a first example of the methodology according to embodiments of the invention
  • Figure 5B shows a second example of the methodology according to embodiments of the invention
  • Figure 6 shows a third example of the methodology according to embodiments of the invention
  • Figure 7 shows a fourth example of the methodology according to embodiments of the invention.
  • FIG. 1 illustrates an example of a wireless telecommunications system to which the present solution may be applied.
  • UMTS Universal Mobile Telecommunications System
  • the structure and the functions of the network elements are only described when relevant to the invention.
  • the wireless telecommunications system may be divided into a core network (CN) 100, an UMTS terrestrial radio access network (UTRAN) 102, and user equipment (UE) 104.
  • the core network 100 and the UTRAN 102 compose an infrastructure of the wireless telecommunications system.
  • the UTRAN 102 is typically implemented with wideband code division multiple access (WCDMA) radio access technology.
  • WCDMA wideband code division multiple access
  • the core network 100 includes a serving GPRS support node (SGSN) 108 connected to the UTRAN 102 over an lu PS interface.
  • the SGSN 108 represents the center point of the packet-switched domain of the core network 100.
  • the main task of the SGSN 108 is to transmit packets to the user equipment 104 and to receive packets from the user equipment 104 by using the UTRAN 102.
  • the SGSN 108 may contain subscriber and location information related to the user equipment 104.
  • the UTRAN 102 includes radio network sub-systems (RNS) 106A, 106B, each of which includes at least one radio network controller (RNC) 110A, 110B and nodes B 112A, 112B, 112C, 112D.
  • RNS radio network sub-systems
  • the radio network controller 110A, 110B controls the radio resources of the UTRAN 102.
  • the radio network controller 110A, 110B controls one or more nodes B 112A, 112B, 112C, 112D.
  • Functions performed by the radio network controller 110A, 11 OB include tasks such as downlink power control, handover management, and admission control.
  • the radio network controllers 110A, 110B may communicate with each other through an lur interface.
  • the radio network controller 110A, 110B may be implemented with a digital computer, memory and computer programs for executing computer processes. Furthermore, the radio network controller 110A, 110B may include connecting means, such as buses and cables, for connecting the radio network controller 110A, 110B to the node B 112A, 112B, 112C, 112D.
  • the basic structure and the operation of the radio network controller 110A, 110B are known to one skilled in the art and only the details relevant to the presents solution are discussed in detail.
  • the UTRAN 102 may also include IP (Internet Protocol) based network elements, such as IP base stations and IP servers.
  • the structure of an IP radio access network is known to a one skilled in the art and the teachings of the present solution may easily be transferred from the given examples to the IP based systems.
  • the node B 112A, 112B, 112C, 112D implements the Uu interface, through which the user equipment 104 may access the telecommunications system infrastructure.
  • the node B 112A, 112B, 112C, 112D performs tasks such as channel coding, rate adaptation, spreading, and basic radio resource management operations.
  • the node B 112A, 112B, 112C, 112D is called a base station.
  • the base station 112A, 112B, 112C, 112D is further responsible for tasks associated with the HSDPA connection.
  • Such tasks include scheduling the user equipment in the HSDPA data transfer, performing data packet retransmission procedures, such as HARQ (Hybrid Automatic Retransmission Request), and performing adaptive coding and modulation (AMC) procedures.
  • Some functions of the base station 112A, 112B, 112C, 112D may be implemented with a digital computer, memory and computer programs for executing computer processes.
  • the base station 112A, 112B, 112C, 112D may include connecting means, such as buses and cables, for connecting the base station B 112A, 112B, 112C, 112D to the radio network controller 110A, 110B.
  • the user equipment 104 may include two parts: mobile equipment (ME) 114 and a UMTS subscriber identity module (USIM) 116.
  • the mobile equipment 114 typically includes at least one radio modem for implementing the Uu interface.
  • Some functionalities of the user equipment 104 may be implemented with a digital computer, memory and computer programs for executing computer processes.
  • the user equipment 104 may further comprise an antenna, a user interface, and a battery.
  • the USIM 116 comprises user-related information and information related to information security in particular, for instance an encryption algorithm.
  • the basic structure and operation of the user equipment 104 are known to one skilled in the art and only the details relevant to the present solution are discussed in detail.
  • an HSDPA (High Speed Downlink Packet Access) connection includes an HS-PDSCH (High Speed Physical Downlink Shared Channel), which provides a transport mechanism for HSDPA logical channels, such as an HS-DSCH (High Speed Downlink Shared Channel).
  • HS-DSCH provides a logical transport mechanism for data transfer from the base station 112A to 112D to the user equipment 104.
  • the HS-PDSCH may be both time- and code-shared between various pieces of user equipment 106 connected to the base station 112A to 112D.
  • the HSDPA connection further includes an HS-DPCCH (High Speed Dedicated Physical Control Channel), which is an uplink channel that carries packet acknowledgement messages (ACK/NACK) and channel information (CQI) on the HS-PDSCH.
  • ACK/NACK packet acknowledgement messages
  • CQI channel information
  • a packet acknowledgement message is typically generated for each data transport block received in the user equipment 104.
  • the packet acknowledgement messages (ACK/NACK) include an indication of the success or failure of reception of a data packet in the user equipment 104.
  • the estimation of the success of the reception may be based on CRC (Cyclic Redundancy Check) carried out for a received packet in the user equipment 104.
  • the packet acknowledgement messages are used for performing HARQ procedures in the base station 112A to 112D.
  • the channel information may be represented by a channel quality indicator (CQI), which characterizes the quality of the HS-PDSCH.
  • CQI is used as feedback information for AMC procedures. If the CQI information is outdated, scheduler decisions could be erroneous.
  • An HSDPA connection typically includes an HS-SCCH (High Speed Physical Downlink Shared Control Channel), which serves as a downlink signalling channel parallel to the HS-PDSCH.
  • HS-SCCH High Speed Physical Downlink Shared Control Channel
  • the HS-SCCH carries downlink information such as channelization code sets, modulation scheme, transport block size, and HARQ process information to the user equipment 104.
  • the downlink information allows the user equipment 104 to listen to the HS-DSCH at the correct time and to use the correct codes to allow successful decoding of a received packet.
  • the HSDPA connection is a communication connection including data transfer capabilities and signalling capabilities between the base station 112A to 112D and the user equipment 104.
  • the HSDPA connection is formed on top of dedicated physical channels, such as DPDCH (Dedicated Physical Data Channel) and DPCCH (Dedicated Physical Control Channel) provided by the WCDMA radio access technology.
  • DPDCH Dedicated Physical Data Channel
  • DPCCH Dedicated Physical Control Channel
  • the horizontal axis 302 shows time on an arbitrary scale. The timeline goes from the top to the bottom.
  • the HSDPA connection is suspended, i.e. the HS-DPSCH, HS-PDCCH, HS- SCCH, or a combination thereof, are not operable.
  • the HSDPA connection remains in a standby state, i.e. the DPDCH and DPCCH are transmitted and received normally allowing the resumption of transmission of any of the HS-DPSCH, HS- PDCCH, or HS-SCCH without additional delays.
  • suspension time periods 308A, 308B there are operable HSDPA periods 304A, 304B, 304C, during which the HSDPA connection may be used for data packet transfer and signalling.
  • the temporal characteristics of the suspension time periods 308A, 308B may be characterized by suspension parameters. Such parameters are, for example, a suspension duration parameter which characterizes the duration 310A, 310B of the suspension time period 308A, 308B, frequency of occurrence of the suspension time periods 308A, 308B, and a suspension timing parameter which characterizes the timing 312A, 312B of the suspension time period 308A, 308B.
  • the timing 312A, 312B may correspond to the time instant when a suspension time period 308A, 308B starts.
  • the suspension parameters may further characterize the duration of the time periods 306A, 306B, 306C, when the suspension is off and the HSDPA connection is operable.
  • the suspension parameters may further represent the temporal characteristics of a sequence of the suspension time periods 308A, 308B. In such a case, the duration 310A, 310B of the different suspension time periods 3108A, 308B may be identical, and, thus, a single suspension duration parameter may be used to characterize the plurality of the suspension time periods 308A, 308B in the sequence.
  • the use of the sequence of the suspension time periods 308A, 308b may be triggered and timed with a suspension timing parameter, which may characterize, for example, the timing 312A of the first suspension time period 308A in the sequence.
  • the duration 310A, 310A of the suspension time period 308A, 308B may vary from 50 milliseconds to 500 milliseconds, while the duration 306A, 306B, 306C of the operable HSDPA periods 304A to 304C may vary from 50 milliseconds to 1000 milliseconds depending on the embodiment.
  • the present solution is not, however, restricted to the above figures.
  • the predefined characteristics of the suspension time periods 308A, 308B and the standby state of the HSDPA connection are based on the fact, that at least a portion of the suspension parameters are available to the user equipment 104, base station 112A to 112D or both the user equipment 104 and base station 112A to 112D so that no signalling of the suspension parameters for example from the network controller 110A, 110B is required between the suspension time periods 308A, 308B.
  • the suspension parameters may be programmed in the base station 112A to 112D and/or the user equipment in advance.
  • the base station 402 includes a communicating unit (CU1 ) 406 for communicating data packets to the user equipment 404 over an HSDPA connection 416.
  • CU1 communicating unit
  • the user equipment 404 includes a communicating unit (CU2) 426 for communicating data packets from the base station 402 over the HSDPA connection 416.
  • the communicating units 406, 426 provide the Uu interface and the implementation of the HSDPA channel structure including the HS- DPCCH, the HS-PDSCH, and the HS-SCCH. Furthermore, communicating units 406, 426 perform HSDPA communication procedures, such as the AMC procedures, HARQ procedures, and the associated signalling.
  • the radio network controller 400 includes a suspension control unit (SCU) 448 for controlling the suspension of the HSDPA connection 416 in a plurality of predefined suspension time periods 308A, 308B with suspension parameters 450 while maintaining the HSDPA connection 416 in a standby state.
  • the suspension parameters 450 are communicated to a signalling unit 446 which performs signalling of the suspension parameters 452, 454 to the base station 402.
  • the suspension control unit 448 may be implemented with a computer program which may be executed in the digital computer of the radio network controller 400.
  • the suspension parameters 450 are generated in the suspension control unit 448 and delivered to the signalling unit 446.
  • the base station 402 may further include a suspension parameter generating unit (SPGU) 410 connected to a connection suspending unit 408.
  • the suspension parameter generating unit 410 may generate suspension parameters 422 and deliver the suspension parameters 422 to the connection suspending unit 408.
  • the suspension parameter generating unit 410 of the base station 402 may be implemented with a digital computer and a computer program.
  • suspension parameters 452, 454 are generated based on the number of user equipment sets 404 requiring an HSDPA connection 416 with the base station 402. As the number of the user equipment sets 404 requiring an HSDPA connection 416 increases, the capacity limit of the base station 402 may be exceeded.
  • the suspension parameters 410, 452, 454 are generated based on an interference load in the uplink, which may result from excessive HS-DPCCH signalling. Such a case may occur, for example, if the uplink of a cell with HSDPA capability is already highly loaded due to active DPCCH and/or DPDCH of a great number of user equipment sets 404, and a great number of user equipment sets 404 transmit the HS-DPCCH simultaneously.
  • each HS-DPCCH requires its own share of the uplink capacity, thus adding to the overall load of the uplink.
  • some of the user equipment sets 404 are located at the cell edge and a high transmit power is needed to provide a sufficient receive signal level in the base station 402.
  • RRC Radio Resource Control
  • the HS-DPCCH When the HS-DPCCH is being transmitted it requires a share of the transmission power resource available at the user equipment 404, thus reducing the possible transmission power available for the DPCCH and/or DPDCH.
  • the uplink DPCCH and/or DPDCH can be allocated an extensive amount of power. This, in turn, ensures that, for example, RRC signalling required by radio connection management has better probability of getting through even when the user equipment 404 is in a power limited situation.
  • the HSDPA connection 416 may be suspended in the user equipment 404, in the base station 402, or both in the user equipment 404 and the base station 402.
  • the user equipment 404 includes a connection suspending unit (CSU2) 428 for suspending the HSDPA connection 416 in the predefined suspension time periods 308A, 308B while maintaining the HSDPA connection 416 in a standby state.
  • the connection suspending unit 428 includes suspension parameters and transmits a control signal 434 to the communicating unit 426.
  • the control signal 434 carries instructions for suspending the HSDPA connection 416 in the suspension time periods 308A, 308B.
  • connection suspending unit 428 may be implemented, for example, with the digital computer and computer program of the user equipment 404.
  • the base station 402 includes a connection suspending unit (CSU1 ) 408 connected to the communicating unit 406, for suspending the HSDPA connection 416 in a plurality of predefined suspension time periods 308A, 308B while maintaining the HSDPA connection 416 in a standby state.
  • the connection suspending unit 408 includes suspension parameters and transmits a control signal 418 to the communicating unit 406.
  • the control signal 418 carries instructions for suspending the HSDPA connection 416 in the suspension time periods 308A, 308B.
  • the connection suspending unit 408 may be implemented, for example, with the digital computer and computer program of the base station 402.
  • the suspension parameters may include instructions for suspending the HSDPA connection 416 in a synchronous manner in the user equipment 404 and base station 402. In such a case, both the user equipment 402 and the base station 402 may implement the suspending time periods, such as those shown in Figure 3, in transmission/reception of the HSDPA connection 416.
  • a synchronization of the suspension procedures in the user equipment 404 and base station 402 may be based on, for example, general synchronization information required in radio transmission.
  • the suspension parameters 454 are signalled to the communicating unit 406 of the base station 402, which delivers the suspension parameters 454 to the communicating unit 426 of the user equipment 404 by using a downlink channel such as the HS-SCCH of the HSDPA connection 416.
  • the communicating unit 426 of the user equipment 404 delivers the suspension parameters to the connection suspension unit 428 of the user equipment 404.
  • the suspension of the HSDPA connection 416 may be activated and possibly deactivated based on the suspension parameters 454.
  • the suspension parameters 452 are signalled to the connection suspending unit 408 of the base station 402 by using NBAP (Node B Application Part) signalling, for example.
  • NBAP Node B Application Part
  • the suspension of the HSDPA connection 416 may be activated and possibly deactivated based on the suspension parameters 452.
  • the user equipment 404 includes a storing unit (STU2) 432 connected to the connection suspending unit 428.
  • the storing unit 432 stores suspension parameters 430, which may be used by the connection suspending unit 428 when the suspension of the HSDPA connection 416 is activated.
  • the storing unit 432 may be implemented with memory means, such as random access memory.
  • the base station 402 includes a storing unit (STU1 ) 412 connected to the connection suspending unit 408.
  • the storing unit 412 stores suspension parameters 424, which may be used by the connection suspending unit 408 when the suspension of the HSDPA connection 416 is activated.
  • the storing unit 412 may be implemented with memory means, such as random access memory.
  • the suspending control unit 448 of the radio network controller 400 may generate an activating signal 456, which is delivered to the connection suspending unit 408 of the base station 402.
  • the activating signal 456 may explicitly activate the suspension of the HSDPA connection 416 or include instructions, such as timing, for starting the suspension.
  • the suspending unit 408 may retrieve the suspension parameters 424 from the storing unit 412.
  • the connection suspending unit 428 of the base station 402 receives an activating signal 452 and is activated to transmit a control signal 418 to the communicating unit 406 in order to suspend the HSDPA connection 416.
  • the suspending control unit 448 of the radio network controller 400 may also generate an activating signal 458, which is delivered to the connection suspending unit 428 of the user equipment 404 via a signalling channel, such as the HS-SCCH of the HSDPA connection 416.
  • the activating signal 458 may explicitly activate the suspension of the HSDPA connection 416 or include instructions, such as timing, for starting the suspension.
  • the suspending unit 428 may retrieve the suspension parameters 430 from the storing unit 432.
  • connection suspending unit 408 of the base station 402 receives an activating signal 458 and is activated to transmit a control signal 434 to the communicating unit 426 in order to suspend the HSDPA connection 416.
  • the storing unit 412, 432 and the activating signal 456, 458 enable suspension parameters 452, 454 to be delivered to the connection suspending unit 408, 428 prior to the execution of the actual suspension of the HSDPA connection, thus allowing flexibility in the timing of the signalling of the suspension parameters 452, 454.
  • the suspension parameters 452, 454 may be used to perform the suspension of the HSDPA connection 416 for a long period of time, thus reducing the need to continuous deliver the suspending instruction to the connection suspending unit 408, 428.
  • the activating signal 456, 458 enables the suspension of the HSDPA connection 416 to be performed with the plurality of the suspension time periods 308A, 308B at a desired time instant, thus providing flexibility for selecting the time when the suspension of the HSDPA connection is executed.
  • the suspension of the HSDPA connection 416 may be implemented in various manners depending on the embodiment.
  • the connection suspending unit 428 generates a control signal 434, which includes instructions for suspending the transmission of a CQI in uplink in a plurality of predefined suspension time periods 308A, 308B. The suspending of the transmission of the CQI may result in the use of an outdated CQI value in the scheduler.
  • the use of the outdated CQI value may in some circumstances cause suspension or at least complications in scheduling the user equipment 102 and, thus, the suspension of transmission of the HS-DPSCH.
  • the suspension parameters 454 or the activating signal 458 signalled from the radio network controller 400 may include an instruction to remove the CQI from the frame structure of the HS-DPCCH signalled in the uplink. However, the transmission of the acknowledgement messages (ACK/NACK) may still be continued.
  • the base station 402 would preferably continue transmitting the HS-DPSCH after the reception of a first reliable CQI in order to ensure a sufficient channel quality.
  • the connection suspending unit 428 generates a control signal 434, which includes instructions for suspending the transmission of the HS-DPCCH in a plurality of predefined suspension time periods 308A, 308B.
  • the suspension parameters 454 or the activating signal 458 may include an instruction to cancel the transmission of the HS-DPCCH in the predefined suspension time periods 308A, 308B.
  • the suspension of transmission of the HS-DPCCH may result in the lack of feedback information required for the AMC and HARQ, and the scheduler of the base station 402 may not be able to schedule the user equipment 404.
  • transmission of downlink channels, such as the HS-PDSCH and the HS-SCCH is interrupted approximately in the suspension time periods 308A, 308B.
  • the suspension of the HS-DPCCH releases radio resources for the DPCCH thus giving rise to cell coverage.
  • the connection suspending unit 428 generates a control signal 434, which includes instructions for suspending reception of the HS-SCCH in a plurality of predefined suspension time periods 308A, 308B.
  • the suspension parameters 454 or the activating signal 458 signalled from the radio network controller 400 may include an instruction to cancel reception of the HS-SCCH in the predefined suspension time periods 308A, 308B.
  • the suspension of reception of the HS-SCCH may be realized in the receiver of the user equipment 402 102 by interrupting the tracking of the HS-SCCH code channel and interrupting the processing of HS-SCCH data.
  • the HS-SCCH informs the user equipment 402 if a data packet is to be received in one or several HS-PDSCH codes, and indicates data packet characteristics, such as those associated with modulation and coding, to enable the user equipment 402 to receive the data packet on the HS-PDSCH.
  • the suspension of the HSDPA connection 416 is initiated in the base station 402.
  • the connection suspending unit 408 of the base station 402 generates a control signal 418, which includes instructions for suspending the reception of the HS-DPCCH in a plurality of predefined suspension time periods 308A, 308B.
  • the suspension parameters 452 or the activating signal 456 signalled from the radio network controller 400 may include an instruction to cancel the reception of the HS-DPCCH in the predefined suspension time periods 308A, 308B.
  • the suspension of reception of the HS-DPCCH may result in the cancellation of the delivery of the CQI and acknowledgement messages to the base station 402 in approximately the suspension time periods 308A, 308B, and, thus in the incapability of transmitting the HS-PDSCH.
  • the connection suspending unit 408 of the base station 402 generates a control signal 418, which includes instructions for suspending the scheduling of data packets to the user equipment 404 in a plurality of predefined suspension time periods 308A, 308B.
  • the suspension parameters 452 or the activating signal 456 signalled from the radio network controller 400 may include an instruction of cancelling the scheduling in the predefined suspension time periods 308A, 308B.
  • the method starts in 500.
  • data packets are communicated over the HSDPA connection 416 including the HS-PDSCH and HS-DPCCH.
  • the HSDPA connection 416 is suspended in a plurality of predefined suspension time periods 308A, 308B while maintaining the HSDPA connection 416 in a standby state.
  • the method ends.
  • the method starts in 508.
  • data packets are communicated over the HSDPA connection 416 including the HS-PDSCH and HS-DPCCH.
  • the transmission of the HS-DPCCH is suspended in the predefined time periods 308A, 308B while maintaining the HS-DPCCH in a standby state.
  • the method ends.
  • the method starts in 600.
  • data packets are communicated over the HSDPA connection 416 including the HS-PDSCH and HS-DPCCH.
  • a decision is made whether to use at least one stored suspension duration parameter 424, 430.
  • At least one stored suspension parameter 424, 430 is not used, at least one suspension parameter 452, 454 characterizing the temporal characteristics of the plurality of the suspension time periods 308A, 308B is signalled in 608, and the HSDPA connection 416 is suspended on the basis of the at least one suspension parameter in 610.
  • an activating signal 456, 458 is signalled in order to activate the suspension of the HSDPA connection 416 in 614.
  • the suspension of the HSDPA connection 416 is activated.
  • the HSDPA connection 416 is suspended in the plurality of time periods 308A, 308B on the basis of the at least one stored suspension parameter 452, 454.
  • the method ends. [0117] In 618, the method ends. [0118] With reference to Figure 6, in an embodiment of the invention, the method starts in 700. [0119] In 702, the data packets are communicated over the HSDPA connection 416 including the HS-PDSCH and HS-DPCCH. [0120] In 704, the transmission of a channel quality indicator is suspended in uplink in a plurality of predefined suspension time periods 308A, 308B. [0121] In 706, transmission of the HS-DPCCH is suspended in a plurality of predefined suspension time periods 308A, 308B while maintaining the HS-DPCCH in a standby state.
  • the reception of the HS-DPCCH is suspended in a plurality of predefined suspension time periods 308A, 308B while maintaining the HS-DPCCH in a standby state.
  • the scheduling of data packets to the user equipment is suspended in a plurality of predefined suspension time periods 308A, 308B.
  • the reception of the HS-SCCH is suspended in a plurality of predefined suspension time periods 308A, 308B while maintaining the HS-SCCH in a standby state.
  • the method ends.
  • the relative order of the method steps 704 to 712 may vary depending on the implementation.
  • the invention provides a computer program for executing a computer process, of which embodiments are shown and described in conjunction with Figures 5A, 5B, 6, and 7.
  • the computer program may be implemented with a digital processor and memory means located in the radio network controller 400, base station 402, and the user equipment 404.
  • the computer program may be stored on a data carrier, such as a CD (Compact Disc), a hard drive, a diskette, and a portable memory unit.
  • the computer program may further be transferred with an electric signal in a data network, such as the Internet.

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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 se rapporte à un procédé, à une station de base, à un équipement utilisateur, à une unité de commande de réseau radio et à un programme d'ordinateur. Conformément à l'invention, des paquets de données sont transmis d'une station de base vers un équipement utilisateur sur une connexion à accès par paquets, descendante et à haute vitesse, comportant une voie partagée descendante physique à haute vitesse pour un transfert de paquets de données et une voie de commande physique, spécialisée et à haute vitesse, pour la signalisation montante. La voie partagée descendante physique à haute vitesse est suspendue au cours d'une pluralité d'intervalles temporels de suspension prédéfinis tandis que la connexion à accès par paquets, descendante et à haute vitesse, est maintenue dans une état d'attente.
PCT/FI2005/000097 2004-02-16 2005-02-14 Procede et programme d'ordinateur permettant de commander des ressources radio, equipement utilisateur, unite de commande de reseau radio et station de base WO2005079095A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP05708177A EP1719379A1 (fr) 2004-02-16 2005-02-14 Procede et programme d'ordinateur permettant de commander des ressources radio, equipement utilisateur, unite de commande de reseau radio et station de base
JP2006553605A JP4551902B2 (ja) 2004-02-16 2005-02-14 無線リソース、ユーザ装置、無線ネットワークコントローラ、及び基地局を制御するための方法、及びコンピュータプログラム
CN2005800105765A CN1939082B (zh) 2004-02-16 2005-02-14 用于控制无线资源的方法和计算机程序、用户设备、无线网络控制器和基站
AU2005212893A AU2005212893C1 (en) 2004-02-16 2005-02-14 Method and computer program for controlling radio resources, user equipment, radio network controller, and base station

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20040244A FI20040244A0 (fi) 2004-02-16 2004-02-16 Menetelmä ja tietokoneohjelma radioresurssien kontrolloimiseksi, käyttäjälaite, radioverkko-ohjain, sekä tukiasema
FI20040244 2004-02-16
US10/833,301 2004-04-28
US10/833,301 US20050180449A1 (en) 2004-02-16 2004-04-28 Method and computer program for controlling radio resources, user equipment, radio network controller, and base station

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JP (1) JP4551902B2 (fr)
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US8427988B2 (en) 2007-08-13 2013-04-23 Interdigital Technology Corporation Method and apparatus to reduce radio resource overhead associated with intermittent traffic

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KR20070074669A (ko) 2007-07-12
JP4551902B2 (ja) 2010-09-29
AU2005212893B2 (en) 2009-05-14
KR20060123571A (ko) 2006-12-01
JP2007527165A (ja) 2007-09-20
AU2005212893A1 (en) 2005-08-25
EP1719379A1 (fr) 2006-11-08
AU2005212893C1 (en) 2013-05-30

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