KR20070074669A - Method and computer readable medium for controlling radio resources, user equipment, radio network controller, and base station - Google Patents

Abstract

A method, base station, user equipment, radio network controller, and computer program are provided. According to the invention, 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 high speed physical downlink shared channel is suspended in a plurality of predefined suspension time periods while maintaining the high speed downlink packet access connection in a standby state.

Description

METHOD AND COMPUTER READABLE MEDIUM FOR CONTROLLING RADIO RESOURCES, USER EQUIPMENT, RADIO NETWORK CONTROLLER, AND BASE STATION}

The following will be described in more detail with reference to the accompanying drawings and preferred embodiments in the drawings:

1 illustrates an example of the structure of a wireless communication system;

2 shows components of an HSDPA connection;

3 shows the time structure of an HSDPA connection;

4 shows an example of a structure of a radio network controller, a structure of a base station, and a structure of user equipment;

5A shows a first example of methodology in accordance with an embodiment of the present invention;

5B shows a second example of methodology according to an embodiment of the invention;

6 shows a third example of methodology according to an embodiment of the invention;

7 shows a fourth example of methodology according to an embodiment of the invention.

The present invention provides a method for controlling a radio resource in a wireless communication system, a wireless network controller for controlling a radio resource in a wireless communication system, a computer program for controlling a radio resource in a wireless communication system, a user equipment of a wireless communication system, and wireless communication. It relates to a base station of the system.

High Speed Downlink Packet Access (HSDPA) is a packet-based data service in Wideband Code Division Multiple Access (WCDMA) downlink with typical data transfer capacity of several megabits per second to more than ten megabits per second.

The 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 signaling. HS-PDSCH and HS-DPCCH are implemented on top of Wideband Code Division Multiple Access (WCDMA) dedicated channels such as Dedicated Physical Data Channels (DPDCHs) and Dedicated Physical Control Channels (DPCCHs), and therefore share such as WCDMA dedicated channels and power supplies. Share wireless resources. Sharing of radio resources gives flexibility in the allocation of radio resources to HSDPA channels and WCDMA dedicated channels. Therefore, there is a need for an improvement for radio resource control in a wireless communication system supporting HSDPA operation.

An object of the present invention is to improve radio resource control in a wireless communication system supporting HSDPA operation.

It is an object of the present invention to provide an improved method, user equipment, base station, wireless network controller, and computer program.

According to a first aspect of the present invention, a method for controlling radio resources in a wireless communication system, comprising: a high speed downlink packet including a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling; Communicating the data packet from the base station to the user equipment via the connection; And stopping the high speed downlink packet access connection in a plurality of predetermined stop periods while maintaining the high speed downlink packet access connection in a standby state.

According to a second aspect of the present invention, a method for controlling radio resources in a wireless communication system, comprising: a high speed downlink packet including a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling; Communicating the data packet from the base station to the user equipment via the connection; And stopping transmission of the high speed dedicated physical control channel in a plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state.

According to a third aspect of the present invention, a base station of a wireless communication system, comprising: a base station via a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling; A communication unit for communicating the data packet from the user equipment; And a connection stop unit connected to the communication unit to stop the high speed downlink packet connection in a plurality of predetermined stop periods while maintaining the high speed downlink packet connection in a standby state. do.

According to a fourth aspect of the present invention, a user equipment of a wireless communication system, comprising: a high speed downlink packet access connection including a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling. A communication unit for communicating a data packet from a base station to user equipment; And a connection stop unit coupled to the communication unit for stopping the high speed downlink packet connection connection in a plurality of predetermined stop periods while maintaining the high speed downlink packet connection connection in a standby state. Is provided.

According to a fifth aspect of the present invention, a user equipment of a wireless communication system, comprising: a high speed downlink packet access connection comprising a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling; A communication unit for communicating a data packet from a base station to user equipment; And a connection stop unit coupled to the communication unit to suspend transmission of the high speed dedicated physical control channel during a plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. Is provided.

According to a sixth aspect of the invention, a user equipment from a base station via a high speed downlink packet access connection comprising a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling. A wireless network controller for controlling a radio resource in a wireless communication system communicated with a wireless communication system, the plurality of preset stops being a stop parameter representing characteristics of time characteristics of a plurality of stop periods while maintaining the high speed downlink packet connection connection. A stop control unit for controlling a stop of the high speed downlink packet connection connection in a period; And a signal transmission unit connected to the stop control unit for signal transmission of the stop parameter.

According to a seventh aspect of the present invention, a data packet is transmitted from a base station to user equipment through a high speed downlink packet connection including a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling. A wireless network controller for controlling radio resources in a wireless communication system to be communicated, the wireless network controller comprising: a stop parameter representing a characteristic of a time characteristic of a plurality of stop periods while maintaining the high speed dedicated physical control channel in a standby state; A stop control unit for controlling transmission stop of the high speed dedicated physical control channel; And a signal transmission unit connected to the stop control unit for signal transmission of the stop parameter.

According to an eighth aspect of the present invention, a computer program embodied in a computer readable medium for controlling radio resources in a wireless communication system, the high speed physical downlink shared channel for data packet transmission and the high speed dedicated for uplink signaling. Communicating the data packet from the base station to the user equipment over a high speed downlink packet access connection comprising a physical control channel; And suspending the high speed downlink packet access connection for a plurality of predetermined stop periods while maintaining the high speed downlink packet access connection in a standby state.

According to another aspect of the invention, a computer program embodied on a computer readable medium and for controlling radio resources in a wireless communication system, the high speed physical downlink shared channel for data packet transmission and the high speed dedicated for uplink signaling Communicating the data packet from the base station to the user equipment over a high speed downlink packet access connection comprising a physical control channel; And suspending transmission of the high speed dedicated physical control channel in a plurality of predetermined stop 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 present invention provide several advantages. In a preferred embodiment of the present invention, the flexibility of radio resource allocation is increased, thus increasing the number of simultaneous high speed downlink packet access users served by the base station, enabling reuse of base station resources, and power for the WCDMA dedicated channel. Enable allocation of resources.

1 shows an example of a wireless communication system to which the present invention can be applied. In the following, an embodiment of the present invention will be described taking a Universal Mobile Telecommunications System (UMTS) as an example of a wireless communication system. The structure and function of network components will only be described with respect to the present invention.

The wireless communication system may be divided into a core network (CN) 100, a UMTS terrestrial radio access network (UTRAN) 102, and a user equipment (US) 104. The core network 100 and the UTRAN 102 constitute the infrastructure of the wireless communication system.

UTRAN 102 is generally implemented with a wideband code division multiple access (WCDMA) radio access technology.

The core network 100 includes a participating GPRS support node (SGSN) connected to the UTRAN 102 over an Iu PS interface. The SGSN 108 represents the center point of the packet-translation domain of the core network 100. The main task of SGSN 108 is to send packets to user equipment 104 and receive packets from user equipment 104 using UTRAN 102. SGSN 108 may include subscriber and location information related to user equipment 104.

UTRAN 102 includes a radio network sub-system (RNS) 106A, 106B, each of which is one or more radio network controller (RNC) 110A, 110B and Node B 112A, 112B, 112C, 112D. It includes.

The radio network controllers 110A and 110B control radio resources of the UTRAN 102. The wireless network controller 110A, 110B controls one or more Node Bs 112A, 112B, 112C, 112D. Functions performed by the wireless network controllers 110A and 110B include tasks such as downlink power control, handover management, and admission control. The wireless network controllers 110A and 110B may communicate with each other via an Iur interface.

Some of the functions of the wireless network controllers 110A and 110B may be implemented as digital programs, memory and computer programs for performing computer processes. Furthermore, the wireless network controllers 110A and 110B may include connecting means such as buses and cables to connect the wireless network controllers 110A and 110B to the node Bs 112A, 112B, 112C, and 112D. The basic structure and operation of the wireless network controllers 110A and 110B are well known to those skilled in the art and only the detailed description related to the present invention will be described in detail.

It should be noted that UTRAN 102 may also include Internet Protocol (IP) based network components such as IP base stations and IP servers. The structure of an IP radio access network is well known to those skilled in the art and the disclosed subject matter can be readily diverted to an IP based system in the above examples.

The Node Bs 112A, 112B, 112C, 112D implement a Uu interface, through which user equipment 104 can access a communication system infrastructure. The Node Bs 112A, 112B, 112C, and 112D perform tasks such as channel coding, rate adaptation, spreading, and basic radio resource management operations. In the following, the Node Bs 112A, 112B, 112C, and 112D are called base stations.

The base stations 112A, 112B, 112C, 112D are further responsible for the tasks associated with HSDPA connection. These tasks include scheduling user equipment in transmitting HSDPA data, performing data packet retransmission procedures such as Hybrid Automatic Retransmission Request (HARQ), and performing adaptive coding and modulation (AMC) procedures.

Some of the functions of the base stations 112A, 112B, 112C, 112D may be implemented as digital programs, memory, and computer programs for executing computer processes. Moreover, the base stations 112A, 112B, 112C, 112D may include connecting means such as buses and cables to connect the base stations 112A, 112B, 112C, 112D to the wireless network controllers 110A, 110B. .

 The basic structure and operation of the base stations 112A, 112B, 112C, 112D are well known to those skilled in the art and only the detailed description related to the present invention will be described in detail.

The user equipment 104 may include two portions of a mobile equipment (ME) 114 and a UMTS subscriber identity module (USIM) 116.

The mobile device 114 generally includes one or more wireless modems for implementing the Uu interface.

Some of the functionality of the user equipment 104 may be implemented in computer programs for executing digital computers, memory, and computer processes. The user equipment 104 may further include an antenna, a user interface and a battery.

The USIM 116 includes user-related information, and in particular information related to information security, such as cryptographic algorithms.

The basic structure and operation of the user equipment 104 are well known to those skilled in the art and only the detailed description related to the present invention will be discussed in detail.

Referring to FIG. 2, a High Speed Downlink Packet Access (HSDPA) connection includes a High Speed Physical Downlink Shared Channel (HS-PDSCH), which is a transport for an HSDPA logical channel such as a High Speed Downlink Shared Channel (HS-DSCH). Provide a mechanism.

The HS-DSCH provides a logical transport mechanism for data transmission from the base stations 112A through 112D to the user equipment 104. The HS-PDSCH may be time division and code division between various user equipments 106 connected to the base stations 112A through 112D.

The HSDPA connection further includes a High Speed Dedicated Physical Control Channel (HS-DPCCH), which is an uplink channel carrying a packet acknowledgment message (ACK / NACK) and channel information (CQI) for the HS-PDSCH. A packet acknowledgment message is generally generated for each data transport block received at the user equipment 104.

The packet acknowledgment message (ACK / NACK) includes an indication of the success or failure of data packet reception at the user equipment 104. The reception success determination may be based on a cyclic redundancy check (CRC) performed on the received packet of the user equipment 104. The packet acknowledgment message is used to perform the HARQ procedure of the base stations 112A to 112D.

The channel information may be indicated by a channel quality indicator (CQI) indicating a quality characteristic of the HS-PDSCH. The CQI is used as feedback information for the AMC procedure. If the CQI information is old, the scheduler's decision may be wrong. The HSDPA connection includes a High Speed Physical Downlink Shared Control Channel (HS-SCCH), which is generally available as a downlink signaling channel parallel to the HS-PDSCH. The HS-SCCH conveys downlink information to the user equipment 104 such as channelization code set, modulation scheme, transport block size, and HARQ process information. The downlink information allows the user equipment 104 to listen to the HS-DSCH at the appropriate time and to enable successful decryption of the received packet using the correct code.

The HSDPA connection is a communication connection that includes data transmission capability and signaling capability between the base stations 112A through 112D and the user equipment 104. The HSDPA connection is formed on top of dedicated physical channels such as Dedicated Physical Control Channel (DPCCH) and Dedicated Physical Data Channel (DPDCH) provided by WCDMA radio access technology.

Referring to FIG. 3, the time structure 300 of the HSDPA connection is shown. Horizontal axis 302 shows the temporal scale of time. The timeline moves from the top to the bottom.

During the preset stop periods 308A, 308B, the HSDPA connection is suspended, i.e., the HS-DPSCH, HS-PDCCH, HS-SCCH and combinations thereof do not work. However, during the pause periods 308A, 308B, the HSDPA connection remains idle, i.e., DPDCH and DPCCH are generally transmitted and received so that transmission of any of the HS-DPSCH, HS-PDCCH or HS-SCCH without additional delay. Allow to recover.

Between stop periods 308A and 308b, there are HSDPA operational periods 304A, 304B and 304C, during which HSDPA connections can be used for data packet transmission and signaling.

The time characteristic of the stop periods 308A and 308B may be represented by a stop parameter. Such parameters may include, for example, a stop duration parameter showing the characteristics of the durations 310A, 310B of the stop periods 308A, 308B, the frequency of occurrence of the stop periods 308A, 308B, the stop periods 308A, 308B. It is a stop timing parameter which shows the timing 312A, 312B characteristic of the.

The timings 312A and 312B may correspond to the moment when the stop periods 308A and 308B begin.

The stop parameter may further indicate a duration characteristic of the periods 306A, 306B, 306C when the stop is complete and the HSDPA connection is operational.

The stop parameter may further represent a time characteristic of the sequence of stop periods 308A, 308B. In such a case, the durations 310A, 310B of the different stop periods 308A, 308B may be the same, so that the signal stop duration parameters may be used to characterize the plurality of stop periods 308A, 308B in the sequence. Can be. The use of the sequence of stop periods 308A, 308B can be triggered and timed with a stop timing parameter that can, for example, characterize the timing 312A of the first stop period 308A in the sequence. The durations 310A, 310A of the outage periods 308A, 308B may vary from 50 milliseconds to 500 milliseconds, while the durations 306A, 306B, 306C of the HSDPA operational periods 304A-304C are Depending on the embodiment, it may vary from 50 milliseconds to 1000 milliseconds. The present invention, however, is not limited to the above numerical values.

The predefined characteristics of the idle and pause periods 308A and 308B of the HSDPA connection may be defined such that at least some of the stop parameters are set to user equipment 104, base stations 112A to 112D, or user equipment 104 and base station 112A. To 112D), due to the fact that signaling of stop parameters from network controllers 110A, 110B is not required between the stop periods 308A, 308B, for example. The stop parameter is pre-programmed in base stations 112A through 112D and / or user equipment.

Referring to FIG. 4, the base station 402 includes a communication unit CU1 for communicating data packets to the user equipment 404 via the HSDPA connection 416. The user equipment 404 correspondingly includes a communication unit CU2 for communicating a data packet from the base station 402 via an HSDPA connection 416.

The communication units 406 and 426 provide a Uu interface and implement an HSDPA channel structure including the HS-DPCCH, HS-PDSCH and HS-SCCH. Moreover, the communication units 406 and 426 perform HSDPA communication procedures such as AMC procedures, HARQ procedures, and combined signaling.

Referring again to FIG. 4, the wireless network controller 400 maintains the HSDPA connection 416 in a standby state while the HSDPA connection 416 is connected to a plurality of preset stop periods 308A, 308B with a stop parameter 450. Suspension Control Unit (SCU) 448 for controlling the stop.

The stop parameter 450 is communicated to a signaling unit 446 that performs signaling of stop parameters 452 and 454 to the base station 402.

The stop control unit 448 may be implemented as a computer program that may be executed in the digital computer of the wireless network controller 400.

In an embodiment of the invention, the stop parameter 450 is generated in the stop control unit 448 and passed to the signaling unit 446.

The base station 402 may further include a stop parameter generation unit (SPGU) 410 coupled to the stop connection unit 408. The stop parameter generation unit 410 may generate a stop parameter 422 and transfer the stop parameter 422 to the connection stop unit 408.

The stop parameter generation unit 410 of the base station 402 may be implemented with a digital computer and a computer program.

In an embodiment of the present invention, stop parameters 452 and 454 are generated based on the number of user equipment sets 404 that require an HSDPA connection with the base station 402. As the number of user equipment sets 404 requiring an HSDPA connection 416 increases, the capacity limit of the base station 402 may be exceeded. In this case, some HSDPA connections 416 may be stopped, thus allowing for more HSDPA connections to be established. As a result, the overall utility of the HSDPA service is improved.

In an embodiment of the present invention, the stop parameters 410, 452, 454 are generated based on the interface load of the uplink, which results from HS-DPCCH excess signaling. In this case, for example, the uplink of a cell with HSDPA capability is already heavily loaded by the active DPCCH and / or DPDCH of a very large number of user equipment sets 404 and a significant number of user equipment sets 404 are HS. This may occur when the DPCCH is simultaneously transmitted. The transmission of each HS-DPCCH requires sharing of its uplink capacity, thus adding to the overall load of the uplink.

In an embodiment of the invention, some of the user equipment set 404 is loaded at the cell edge, and high transmit power is needed to provide sufficient received signal level of the base station 402. In order to enable successful uplink data transmission, ie user data transmission or Radio Resource Control (RRC) signaling to the wireless network controller 400, having sufficient transmission power available for uplink DPCCH and / or DPDCH transmission. May be advantageous. When the HS-DPCCH is transmitted, it requires sharing of the transmit power resources available at the user equipment 404, thus reducing the transmit power available for the DPCCH and / or DPDCH. In a power limited situation, if the HS-DPCCH is being transmitted, it is possible to allocate sufficient power to one or more uplink channels, DPCCH, DPDCH or HS-DPCCH, for reliable reception at the base station 402. . Thus, by introducing a period such as the periods 308A and 308B, which are periods during which the HS-DPCCH is not transmitted in the uplink, a large amount of power may be allocated to the uplink DPCCH and / or DPDCH. This, in turn, increases the likelihood that the RRC signaling required for radio connection management, for example, will work properly even when the user equipment 404 is in a power limited situation.

The HSDPA connection 416 may be stopped at the user equipment 404 or at the base station 402, or at both the user equipment 404 and the base station 402.

In one aspect of the invention, the user equipment 404 stops the HSDPA connection 416 for a predetermined stop period 308A, 308B while keeping the HSDPA connection 416 in a standby state (CSU2). (428).

The connection stop unit 428 includes a stop parameter and sends a control signal 434 to the communication unit 426. The control signal 434 conveys an indication to stop the HSDPA connection 416 in the pause periods 308A, 308B.

The connection stop unit 428 may be implemented, for example, with a computer program of the digital computer and the user equipment 404.

In one aspect of the invention, the base station 402 maintains the HSDPA connection 416 in a standby state while stopping the HSDPA connection 416 in a plurality of predetermined stop periods 308A, 308B. And a connection stop unit CSU1 connected to 406.

The connection stop unit 408 includes a stop parameter and sends a control signal 418 to the communication unit 406. The control signal 418 conveys an indication to stop the HSDPA connection 416 in the pause periods 308A, 308B.

The connection stop unit 408 may be implemented with, for example, a digital computer and a computer program of the base station 402.

The stop parameter may include an indication to stop the HSDPA connection 416 in a synchronized manner at the user equipment 404 and the base station 402. In this case, both the user equipment 402 and the base station 402 may implement a pause period as shown in FIG. 3 upon transmission / reception of the HSDPA connection 416.

Synchronization of the stop procedure at the user equipment 404 and the base station 402 may be based on general synchronization information required for wireless transmission, for example.

In an embodiment of the invention, the stop parameter 454 is signaled to the communication unit 406 of the base station 402, which uses the downlink channel such as the HS-SCCH of the HSDPA connection 416. The stop parameter 454 is passed to the communication unit 426 of the user equipment 404.

The communication unit 426 of the user equipment 404 passes the stop parameter to the connection stop unit 428 of the user equipment 404.

Suspension of the HSDPA connection 416 may be activated or deactivated based on the suspend parameter 454.

In an embodiment of the invention, the stop parameter 452 is signaled to the connection stop unit 408 of the base station 402 using, for example, a Node B Application Part (NBAP).

Suspension of the HSDPA connection 416 may be activated or deactivated based on the suspend parameter 452.

In an embodiment of the invention, the user equipment 404 includes a storage unit (STU2) 432 connected to the connection stop unit 428. The storage unit 432 stores a stop parameter 430 that can be used by the stop connection unit 428 when the stop of the HSDPA connection 416 is activated. The storage unit 432 may be implemented by memory means such as RAM.

In an embodiment of the invention, the base station 402 includes a storage unit (STU1) 412 coupled to the connection stop unit 408. The storage unit 412 stores a stop parameter 424 that can be used by the stop connection unit 408 when the stop of the HSDPA connection 416 is activated. The storage unit 412 may be implemented by memory means such as RAM.

The stop control unit 448 of the wireless network controller 400 may generate an activation signal 456 transmitted to the connection stop unit 408 of the base station 402. The activation signal 456 may explicitly activate the stop of the HSDPA connection 416 or may include an indication such as timing to initiate the stop. As a result of activation, the stop unit 408 may retrieve the stop parameter 424 from the storage unit 412.

The stop connection unit 428 of the base station 402 receives an activation signal 452 and sends a control signal 418 to the communication unit 406 to be activated to stop the HSDPA connection 416.

The stop control unit 448 of the wireless network controller 400 sends an activation signal to the connection stop unit 428 of the user equipment 404 via a signaling channel such as the HS-SCCH of the HSDPA connection 416. 458 may also be generated. The activation signal 458 may include an indication such as timing to explicitly activate the stop of the HSDPA connection 416 or to initiate the stop. As a result of activation, the stop unit 428 may retrieve the stop parameter from the storage unit 432.

The stop connection unit 402 of the base station 402 is activated to receive an activation signal 458 and to send a control signal 434 to the communication unit 426 to stop the HSDPA connection 416.

The storage unit 412, 432 and the activation signals 456, 458 allow the stop parameters 452, 454 to be passed to the connection stop unit 408, 428 before the actual stop execution of the HSDPA connection. Thus allowing flexibility in the signaling timing of the stop parameters 452 and 454. Moreover, the stop parameters 452 and 454 can be used to perform the stop of the HSDPA connection 416 for a long period of time, thus reducing the need to continuously deliver stop indications to the stop connection units 408 and 428. .

The activation signals 456 and 458 allow the stopping of the HSDPA connection 416 to be performed with multiple stop periods 308A and 308B at the desired moment, thus providing flexibility in selecting when to stop the HSDPA connection. To provide.

Suspension of the HSDPA connection 416 may be implemented in various ways, depending on the embodiment.

In an embodiment of the present invention, the connection stop unit 428 generates a control signal 434 including an instruction to stop transmission of the CQI in the uplink of a plurality of preset stop periods 308A, 308B. . Stopping the CQI transmission may cause the scheduler to use old CQI values. Using old CQI values may in some situations cause a halt or at least complexity in scheduling the user equipment 102, thereby causing a halt in transmission of the HS-DPSCH. In some applications, it would be advantageous to cancel the user equipment 404 in scheduling if the latest CQI available from the user equipment 404 in the base station scheduler is older than an implementation time interval that may be in the order of tens of milliseconds.

The activation signal 458 or the stop parameter 454 signaled from the wireless network controller 400 may include an indication to remove the CQI from the frame structure of the HS-DPCCH signaled on the uplink. However, the transmission of the acknowledgment message (ACK / NACK) can still continue.

It should be noted that after each pause period 308A, 308B it is desirable for the base station 402 to continue HS-DPSCH transmission after the first reliable CQI reception to ensure sufficient channel quality.

In an embodiment of the present invention, the connection stop unit 428 generates a control signal 434 including an instruction to stop transmission of the HS-DPCCH in a plurality of preset stop periods 308A, 308B.

The stop parameter 454 of the activation signal 458 may include an instruction to cancel transmission of the HS-DPCCH in predetermined stop periods 308A and 308B. The suspension of the HS-DPCCH transmission may cause a lack of feedback information required for AMC and HARQ, and the scheduler of the base station 402 may not be able to schedule the user equipment 404. As a result, transmission of downlink channels, such as HS-PDSCH and HS-SCCH, is stopped approximately in the pause periods 308A, 308B.

The suspension of the HS-DPCCH releases radio resources for the DPCCH and thus increases cell coverage.

In an embodiment of the present invention, the connection stop unit 428 generates a control signal 434 including an instruction to stop receiving the HS-SCCH in a plurality of preset stop periods 308A, 308B.

The activation signal 458 and the stop parameter 454 signaled from the wireless network controller 400 may include an instruction to cancel the reception of the HS-SCCH in the preset stop periods 308A and 308B. . Stopping reception of the HS-SCCH may be implemented to the recipients of the user equipment 402, 102 by stopping tracking of the HS-SCCH code channel and stopping HS-SCCH data processing. The HS-SCCH informs the user equipment 402 if a data packet has been received with one or several HS-PDSCH codes, and indicates data packet characteristics such as modulation and coding so that the user equipment 402 has data on the HS-PDSCH. Enable to receive packets. As a result of stopping the HS-SCCH reception, transmission of the acknowledgment message is stopped.

In some embodiments, the suspension of the HSDPA connection 416 was initiated at the base station 402.

In an embodiment of the present invention, the connection stop unit 408 of the base station 402 generates a control signal 418 including an instruction to stop receiving the HS-DPCCH in a plurality of preset stop periods 308A, 308B. Create

The stop parameter 452 or the active signal 456 signaled from the wireless network controller 400 may include an instruction for canceling reception of the HS-DPCCH in predetermined stop periods 308A and 308B.

Stopping reception of the HS-DPCCH may cancel the delivery of the CQI and acknowledgment message to the base station 402 in approximately the stop periods 308A and 308B, thus causing the HS-PDSCH transmission failure.

In an embodiment of the present invention, the connection stop unit 408 of the base station 402 includes an instruction for stopping data packet scheduling to the user equipment 404 in a plurality of preset stop periods 308A, 308B. Generate control signal 418.

The activation signal 456 or the stop parameter 452 signaled from the wireless network controller 400 may include an instruction to cancel scheduling in the preset stop periods 308A and 308B. As a result of the scheduling stop, no data packet is received from the user equipment 402 and no confirmation message is generated and sent.

Referring to FIG. 5A, in an embodiment of the invention the method starts at step 500.

In step 502, the data packet is communicated over an HSDPA connection 416 that includes the HS-PDSCH and the HS-DPCCH.

In step 504, the HSDPA connection 416 is suspended in a number of predetermined outage periods 308A, 308B while keeping the HSDPA connection 416 in a standby state.

At step 506, the method ends.

5B, in an embodiment of the present invention, the method begins at step 508.

At step 510, the data packet is communicated over an HSDPA connection 416 that includes the HS-PDSCH and the HS-DPCCH.

In step 512, the transmission of the HS-DPCCH is stopped in a number of periods 308A, 308B while keeping the HS-DPCCH in standby.

At step 514, the method ends.

Referring to FIG. 6, in an embodiment of the present invention, the method begins at step 600.

At step 602, the data packet is communicated over an HSDPA connection 416 that includes the HS-PDSCH and the HS-DPCCH.

In step 604, it is determined whether to use one or more stored waiting duration parameters 424 and 430.

If one or more stored stop parameters 424, 430 are used, one or more stop parameters 452, 454, which are characteristic of the time characteristic of the plurality of stop periods 308A, 308B, are signaled in step 608 and the HSDPA The connection 416 is stopped based on one or more stop parameters 610.

When one or more stored stop parameters 424, 430 are used, activation signals 456, 458 are signaled to activate the stop of the HSDPA connection 416 at step 614. In step 616, the HSDPA connection 416 is suspended for a number of periods 308A, 308B based on one or more stored stop parameters 452, 454.

At step 618, the method ends.

Referring to FIG. 6, in an embodiment of the present invention, the method begins at step 700.

At step 702, the data packet is communicated over an HSDPA connection 416 that includes the HS-PDSCH and the HS-DPCCH.

In step 704, the transmission of the channel quality indicator is stopped in the uplink in a number of predetermined stop periods 308A, 308B.

In step 706, the transmission of the HS-DPCCH is stopped in a number of preset stop periods 308A, 308B while keeping the HS-DPCCH in standby.

In step 708, the reception of the HS-DPCCH is stopped in a number of predetermined stop periods 308A, 308B while keeping the HS-DPCCH in standby.

In step 710, the scheduling of data packets to the user equipment is suspended in a number of preset stop periods 308A, 308B.

In step 712, the reception of the HS-SCCH is stopped in a number of predetermined stop periods 308A, 308B while keeping the HS-SCCH in a standby state.

At step 714, the method ends.

The relative order of steps 704-712 of the method may vary depending on the embodiment. One execution of steps 704-712 of the method is triggered by the execution of another method steps 704-712 by the causal relationship of other components such as channel and feedback information applied to the HSDPA connection 416.

In some aspects, the present invention provides a computer program for executing a computer process whose embodiments are shown and described in connection with FIGS. 5A, 5B, 6, and 7.

The computer program may be implemented by digital processor and memory means located in the wireless network controller 400, the base station 402 and the user equipment 404.

The computer program may be stored in a data transfer device such as a compact disk (CD), a hard drive, a diskette, and a portable memory unit. The computer program may be transmitted as an electrical signal in a data network such as the Internet.

Although the invention has been described above with reference to the embodiments in accordance with the accompanying drawings, it is apparent that the invention is not limited thereto and may be modified in many ways within the scope of the appended claims.

The method, user equipment, base station, network controller and computer program of the present invention provide several advantages. In a preferred embodiment of the present invention, the flexibility of radio resource allocation is increased, thus increasing the number of simultaneous high speed downlink packet access users served by the base station, enabling reuse of base station resources, and power for the WCDMA dedicated channel. Enable allocation of resources.

Claims (46)

A method of controlling radio resources in a wireless communication system, the method comprising: Communicating the data packet over a high speed downlink packet access connection; And And suspending the high speed downlink packet access connection in a plurality of predetermined stop periods while maintaining the high speed downlink packet access connection in a standby state. The method of claim 1, Stopping the high speed dedicated physical control channel during the plurality of predetermined stop periods while maintaining a high speed dedicated physical control channel in a standby state. The method of claim 1, And stopping transmission of the high speed dedicated physical control channel during the plurality of predetermined stop periods while maintaining a high speed dedicated physical control channel in a standby state. The method of claim 1, Stopping reception of the high speed dedicated physical control channel during the plurality of predetermined downtimes while maintaining a high speed dedicated physical control channel in a standby state. The method of claim 1, Suspending transmission of channel quality indicators in the uplink during the plurality of predetermined pause periods, wherein the channel quality indicators indicate a characteristic of the quality of the fast physical downlink shared channel. Way. The method of claim 1, And stopping the reception of the high speed physical downlink shared control channel in a plurality of predetermined stop periods while maintaining the high speed physical downlink shared control channel in a standby state. The method of claim 1, Generating at least one stop parameter indicative of a characteristic of the time features of the plurality of stop periods. The radio resource control method further comprises. The method of claim 1, Signaling a stop parameter indicative of a characteristic of the time features of the plurality of stop periods Radio resource control method further comprising. The method of claim 1, And suspending the high speed downlink packet access connection in the plurality of pause periods based on at least one stop parameter that is indicative of characteristics of the time characteristics of the plurality of pause periods. The method of claim 1, Storing at least one stop parameter indicative of a characteristic of the time features of the plurality of stop periods; And Suspending the high speed downlink packet connection connection in the plurality of pause periods based on at least one stop parameter indicative of characteristics of the time characteristics of the plurality of pause periods and an active signal activating the stop. The radio resource control method further comprises. The method of claim 1, Suspending a high speed physical downlink shared channel during the plurality of predetermined downtimes while maintaining the high speed downlink packet access connection in a standby state; The radio resource control method further comprises. The method of claim 1, Suspending a high speed physical downlink shared control channel in the plurality of predetermined downtimes while maintaining the high speed downlink packet access connection in a standby state; The radio resource control method further comprises. The method of claim 1, And transmitting an activation signal to user equipment through a high speed physical downlink shared control channel, wherein the activation signal explicitly activates the suspension of the high speed downlink packet access connection. Control method. The method of claim 1, And stopping data packet scheduling in the plurality of predetermined stop periods. In the apparatus of a wireless communication system, the apparatus is: A communication unit for communicating data packets via a high speed downlink packet connection including a high speed physical downlink shared channel for data packet transmission and a high speed dedicated physical control channel for uplink signaling; And A connection stop unit connected to the communication unit, stopping the high speed downlink packet connection connection in a plurality of predetermined stop periods while keeping the high speed downlink packet connection connection in a standby state; Apparatus of a wireless communication system comprising a. The method of claim 15, And the connection stop unit stops the high speed dedicated physical control channel in the plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. The method of claim 15, And the connection stop unit stops transmission of the high speed dedicated physical control channel in the plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. The method of claim 15, And the connection stop unit stops reception of the high speed dedicated physical control channel during the plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. The method of claim 15, The stop connection unit stops transmission of channel quality indicators in the uplink in the plurality of predetermined stop periods, the channel quality indicators indicating a quality characteristic of the high speed physical downlink shared channel. Device in a communication system. The method of claim 15, And the connection stop unit stops reception of the high speed physical downlink shared control channel in the plurality of predetermined stop periods while maintaining the high speed physical downlink shared control channel in a standby state. The method of claim 15, Generating at least one stop parameter indicative of characteristics of the time features of the plurality of stop periods, the apparatus further comprising a stop parameter generation unit connected to the connection stop unit. The method of claim 15, And a signaling unit signaling a stop parameter indicative of characteristics of the time features of the plurality of stop periods, the signaling unit being connected to a stop control unit. The method of claim 15, And said connection stop unit suspends said high speed downlink packet connection connection in said plurality of stop periods based on at least one stop parameter indicative of characteristics of time features of said plurality of stop periods. Device. The method of claim 15, Storing at least one stop parameter indicative of characteristics of the time features of said plurality of stop periods, further comprising a storage unit connected to said connected stop unit, The connection stop unit stops the high speed downlink packet connection connection in the plurality of stop periods based on at least one stop parameter that is characteristic of the time characteristics of the plurality of stop periods, and activates by the received active signal Apparatus of a wireless communication system, characterized in that. The method of claim 15, And the connection stop unit stops the high speed physical downlink shared channel in the plurality of predetermined stop periods while maintaining the high speed downlink packet connection connection in a standby state. The method of claim 15, And the connection stop unit stops a high speed physical downlink shared control channel in the plurality of predetermined stop periods while maintaining the high speed downlink packet connection connection in a standby state. The method of claim 15, And the apparatus is configured to deliver an activation signal to user equipment via a high speed physical downlink shared control channel, the activation signal explicitly activating a stop of the high speed downlink packet access connection. Device. The method of claim 15, And the connection stop unit stops scheduling data packets to user equipment in the plurality of predetermined stop periods. User equipment of a wireless communication system according to claim 15. A base station of a wireless communication system according to claim 15. Wireless network controller of a wireless communication system according to claim 15. A digital processor in a wireless communication system according to claim 15. A computer readable medium embodying a computer program for controlling a radio resource in a wireless communication system, the computer program comprising: Communicating the data packet over a high speed downlink packet access connection; And And suspending the high speed downlink packet connection in a plurality of predetermined stop periods while maintaining the high speed downlink packet connection in a standby state. 34. The computer program of claim 33, wherein the computer process comprises: Stopping the high speed dedicated physical control channel in a plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. 34. The computer program of claim 33, wherein the computer process is And stopping transmission of the high speed dedicated physical control channel in a plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. 34. The computer program of claim 33, wherein the computer process is And stopping the reception of the high speed dedicated physical control channel during a plurality of predetermined stop periods while maintaining the high speed dedicated physical control channel in a standby state. 34. The computer program of claim 33, wherein the computer process is Suspending transmission of channel quality indicators in the uplink during the plurality of predetermined pause periods, wherein the channel quality indicators are indicative of characteristics of the quality of the fast physical downlink shared channel. media. 34. The computer program of claim 33, wherein the computer process is And stopping the reception of the high speed physical downlink shared control channel in a plurality of predetermined stop periods while maintaining the high speed physical downlink shared control channel in a standby state. 34. The computer program of claim 33, wherein the computer process is Generating at least one stop parameter indicative of characteristics of the time features of the plurality of stop periods. 34. The computer program of claim 33, wherein the computer process is Signaling a stop parameter indicative of a characteristic of the time features of the plurality of stop periods. 34. The computer program of claim 33, wherein the computer process is And suspending the high speed downlink packet connection connection in the plurality of pause periods based on at least one stop parameter indicative of characteristics of the time characteristics of the plurality of pause periods. 34. The computer program of claim 33, wherein the computer process is Storing at least one stop parameter indicative of a characteristic of the time features of the plurality of stop periods; And Suspending the high speed downlink packet access connection in the plurality of pause periods based on at least one stop parameter indicative of characteristics of the time characteristics of the plurality of pause periods and an activation signal activating the stop. And a computer readable medium. 34. The computer program of claim 33, wherein the computer process is Stopping the high speed physical downlink shared channel in the plurality of predetermined outage periods while maintaining the high speed downlink packet access connection in a standby state. 34. The computer program of claim 33, wherein the computer process is Stopping the high speed physical downlink shared control channel in the plurality of predetermined outage periods while maintaining the high speed downlink packet access connection in a standby state. 34. The computer program of claim 33, wherein the computer process is And forwarding an activation signal to user equipment via a high speed physical downlink shared control channel, wherein the activation signal explicitly activates the suspension of the high speed downlink packet access. Media available. 34. The computer program of claim 33, wherein the computer process is And stopping data packet scheduling in the plurality of predetermined stop periods.

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