CN101166316B - Configuration method, system and user equipment for discontinuous reception parameters of user equipment - Google Patents

Abstract

The invention relates to a configuration method and system for discontinuous reception parameters of user equipment and a user equipment. According to the present invention, the discontinuous reception parameter of the user equipment in the discontinuous reception state is configured in the system broadcast message, when the radio resource control RRC signaling that triggers the user equipment to perform state transition received by the user equipment does not include the discontinuous reception parameter When , the user equipment uses the discontinuous reception parameters from the system broadcast message to configure, so the success rate of the user equipment state transition to the discontinuous reception state can be increased.

Description

Configuration method, system and user equipment for discontinuous reception parameters of user equipment

technical field

The invention relates to the field of mobile communication, in particular to the technology of user equipment state transition.

Background technique

The 3GPP system is divided into three parts: UE (User Equipment, user equipment), UTRAN (UMTSterrestrial radio access network, UMTS system ground wireless access network) and CN (core network, core network). The interface between the UE and the UTRAN is the Uu interface, which provides the function of wirelessly accessing users.

The protocol stack of the Uu interface includes RRC (radio resource control, radio resource control), RLC (radio link control, radio link control), MAC (medium access control, media access control) and physical layer protocols. The RRC protocol provides a signaling plane connection of the Uu interface for transmitting control signaling between the UTRAN and the UE. When there is no RRC signaling connection between UE and UTRAN, it is called idle state (idle); when there is RRC signaling connection between UE and UTRAN, it is called RRC connection mode, and UE will be in four states One of. The four RRC states are URA_PCH, CELL_PCH, CELL_FACH, and CELL_DCH. As shown in Figure 1, the aforementioned five states can be converted.

There are different processing methods when the UE is in different states.

Cell_DCH state: UE has DCCH (Dedicated Control Channel) and DTCH (Dedicated Traffic Channel), and uses a dedicated (or shared) channel for communication; the dedicated channel is a radio resource that can only be used by the UE.

Cell_FACH state: UE has DCCH and DTCH, can receive data on FACH (Forward Access Channel, forward access channel) and send data on RACH (Random Access Channel, random access channel), without needing to allocate a dedicated channel state; because It does not occupy a dedicated channel, so it can save wireless resources.

CELL_PCH state: The UE cannot use DCCH and DTCH, cannot receive and send data, and only listens to the paging indicator on the PICH (paging indicator channel) in the downlink direction discontinuously according to the DRX (discontinuous reception) cycle, Register information with the RNC when the cell changes. Since the PICH is monitored discontinuously, the UE in this state saves more power than the CELL_FACH state.

URA_PCH state: UE cannot use DCCH and DTCH, cannot receive and send data, only listens to the paging indication on PICH discontinuously in the downlink direction according to the DRX cycle, and registers with RNC when the UTRAN registration area changes. Since the range of the UTRAN registration area is much larger than that of the cell, the UE in this state saves more power than the CELL_PCH state.

Idle state: the mobile station receives the broadcast data on the BCH (broadcast channel), monitors the paging indication on the PICH, and so on. A UE in this state is the most power efficient.

In WCDMA technology, in order to establish contact with terminals in the idle state and in the Cell_PCH and URA_PCH states, the network sends paging messages on the public paging channel PCH, so that the terminals can perform corresponding operations after receiving the paging messages. The paging channel PCH is mapped to the SCCPCH (Secondary Common Control Physical Channel) of the physical layer, and each cell may have one or more SCCPCHs. In order to reduce the time of monitoring the SCCPCH channel, use the public paging indication channel (PICH), and use the PICH channel and the PCH channel together to provide effective sleep mode operation for the terminal, which is used to provide paging instructions to the terminal and notify the terminal to go to the SCCPCH Receive paging messages.

According to the prior art, in the idle state and in the Cell_PCH, URA_PCH state, the user equipment will calculate when it should receive its own paging message according to a certain algorithm, so as to improve the utilization efficiency of the paging block. The specific method is as follows: Each paging channel has a paging indication channel paired with it. The user equipment calculates the paging occasion (paging occasion) according to a certain algorithm, and performs discontinuous reception (DRX, discontinuous reception) on the paging indication channel. Paging indication in paging occasion. If the information of the paging indication belonging to oneself is monitored in the paging opportunity as "there is a paging message to follow", then by calculating the paging message receiving occasion (paging message receiving occasion), receive it on the SCCPCH carrying the paging message paging message. That is to say, CELL_PCH and URA_PCH monitor the PICH discontinuously, and here we call these two states discontinuous reception states.

Calculation of paging timing:

Paging Occasion＝{(IMSI div K)mod(DRX cycle length div PBP)}*PBP+n*DRX cycle length+Frame Offset

Calculation of paging message receiving timing:

Paging Message Receiving Occasion＝Paging Occasion+NPICH+NGAP+{(DRX Index mod Np)mod NPCH}*2

in:

IMSI is the International Mobile Subscriber Identity code; K is the number of available Secondary Common Control Physical Channels (SCCPCH) carrying the Paging Channel (PCH); DRX cycle length is the discontinuous reception cycle; PBP is the paging block cycle, for FDD , PBP=1; Frame Offset is the frame offset, for FDD, the frame offset is 0, for TDD, the frame offset value is specified in the system message; NPICH is the number of frames carrying the paging indication frame, which is equal to the paging indication frame NGAP is the number of frames between the last frame carrying the paging indication and the first frame carrying the paging message at a paging occasion; DRX Index is the discontinuous reception index, and its value is (IMSI div 8192); for FDD, Np is the number of paging indications in a frame, for TDD, Np is the number of paging indications in a paging block; NPCH is the number of paging groups. NPICH, Np, and NPCH are delivered in system messages.

For a terminal in an idle state, in a system broadcast message (for example, in system broadcast message type 1), a CN domain specific DRX cycle length coefficient value (that is, the DRX cycle length in the above formula) will be issued for each The paging indication is monitored within a DRX cycle to achieve the purpose of power saving.

When the UE transitions from other states to the CELL PCH or URA PCH state, its discontinuous reception parameter (DRX cycle length) is configured through RRC signaling for configuration, such as Cell update confirm signaling or Radio Bearer Reconfig The cell UTRANDRX Cycle length coefficient in the signaling is configured.

According to the prior art, the discontinuous reception parameter configuration flow initiated by the RNC is shown in FIG. 2 . If the RRC signaling that triggers the user equipment to perform state transition (such as Cell update confirm signaling or RadioBearer Reconfig, etc.) indicates that the UE needs to enter the Cell_PCH or URA_PCH state, but does not contain "UTRAN DRX Cycle length coefficient", the UE will set This message is an invalid configuration, and sends a state transition failure response message, thereby reducing the success rate of the state transition; RNC may re-initiate the state transition after receiving the failure response message, even if the re-initiated state transition is successful, it will Increase the latency of state transitions.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for configuring discontinuous reception parameters of user equipment, so that users can obtain discontinuous reception parameters for configuration, thereby increasing the success rate of user equipment transitioning to discontinuous reception state.

According to the method for configuring the discontinuous reception parameter of the user equipment in the embodiment of the present invention, the discontinuous reception parameter in the discontinuous reception state of the user equipment is configured in the system broadcast message; the user equipment receives and stores the discontinuous reception parameter in the system broadcast message parameter.

The embodiment of the present invention also provides a discontinuous reception parameter configuration system, mainly composed of a radio network controller RNC and user equipment. Wherein the RNC includes a parameter determination unit, configured to determine the discontinuous reception parameters delivered through the system broadcast message, wherein the user equipment includes: a storage unit, used for storing the discontinuous reception parameters in the system broadcast message; a first judging unit, It is used to judge whether the radio resource control RRC signaling that triggers the user equipment to perform state transition contains discontinuous reception parameters; the first selecting unit selects the source of the discontinuous reception parameters according to the judgment result of the judging unit.

The embodiment of the present invention also provides a user equipment, including: a storage unit for storing discontinuous parameters in the system broadcast message; a first judging unit for judging whether the radio resource control RRC signaling that triggers the user equipment to perform state transition Including the discontinuous reception parameter; the first selection unit selects the source of the discontinuous reception parameter according to the judgment result of the judging unit.

The embodiment of the present invention also provides another user equipment, including: a storage unit for storing discontinuous parameters in the system broadcast message; a timer; a second judging unit for judging the user equipment within the time set by the timer Whether the amount of data transmission with the network side is less than a certain value or whether there is no data transmission; the second selection unit selects whether to use the discontinuous reception parameter in the system broadcast message stored in the storage unit according to the judgment result of the second judgment unit.

An advantage of the present invention is that it allows user equipment to use stored discontinuous reception parameters as default parameters in some cases, thereby increasing the success rate of state transition and reducing state transition delay.

Description of drawings

The present invention will be described in more detail below with reference to accompanying drawing, in accompanying drawing:

FIG. 1 is a transition diagram of five states of UE;

Fig. 2 shows the discontinuous reception parameter configuration process initiated by RNC under the prior art;

Fig. 3a is a flow chart of discontinuous reception parameter configuration according to an embodiment of the present invention;

Fig. 3b shows the signaling flow of the configuration flow shown in Fig. 3a;

Fig. 4 is a simplified block diagram of a discontinuous reception parameter configuration system according to an embodiment of the present invention;

Detailed ways

Fig. 5 is a simplified block diagram of a user equipment according to another embodiment of the present invention.

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

In one embodiment of the present invention, the discontinuous reception parameter configuration process is shown in Fig. 3a. The specific description is as follows:

Step 301: The RNC sends a system broadcast message, which includes discontinuous reception parameters configured for the UE in the RRC discontinuous reception state. You can configure discontinuous reception parameters in Cell_PCH state or URA_PCH state, and you can also configure discontinuous reception parameters in Cell_PCH state and URA_PCH state at the same time. This parameter uses "Default UTRAN DRX Cycle length coefficient" (hereinafter referred to as "Default UTRAN DRX parameter ")express. The value of this parameter can be different for the Cell_PCH state and the URA_PCH state.

Step 302: UE receives and stores the Default UTRAN DRX parameter in the system broadcast message.

Step 303: The RRC signaling that triggers the user equipment to perform state transition instructs the UE to perform state transition. The signaling may be RRC signaling that instructs the UE to perform state transition, or other RRC signaling that triggers the UE to perform state transition.

Step 304: Determine whether the RRC signaling that triggers the state transition of the user equipment includes the discontinuous reception parameter in the discontinuous reception state.

Step 305: As shown in Figure 3b, when the RRC signaling that triggers the user equipment to perform state transition (here, the RRC signaling that instructs the UE to perform state transition) does not include the discontinuous reception parameter "UTRAN DRX Cycle length coefficient required for the user to use ", the UE selects the discontinuous reception parameter Default UTRAN DRX obtained from the system broadcast message for configuration.

If the serving cell does not change until the UE enters the Cell_PCH or URA_PCH state after receiving the system broadcast message in other states, then use the Default UTRAN DRX parameter in the received and stored system broadcast message of the serving cell; if the UE is in After receiving system broadcast messages in other states, the serving cell has changed until entering the Cell_PCH or URA_PCH state, that is, the UE broadcasts to the new serving cell when performing cell selection during the state transition to the Cell_PCH or URA_PCH state After receiving and storing the system broadcast message broadcast by the new serving cell, the UE uses the Default UTRANDRX parameter received and stored from the system broadcast message broadcast by the new serving cell. Through the above processing, it can be ensured that the Default UTRAN DRX parameters broadcast on the network side and the Default UTRAN DRX parameters stored on the UE side are synchronized.

If the RRC signaling that triggers the user equipment to perform state transition includes "UTRAN DRXCycle length coefficient", then perform step 307, that is, the UE selects to use the discontinuous reception parameter in the RRC signaling that triggers the user equipment to perform state transition for configuration.

Step 306: The UE carries an indication in the state transition completion response message, and notifies the RNC of the source of the discontinuous reception parameter used by itself. If the RRC signaling that triggers the user equipment to perform state transition does not include "UTRAN DRX Cycle length coefficient", the UE selects the discontinuous reception parameter Default UTRAN DRX parameter in the system broadcast message for configuration, and then informs the RNC that it is currently using the discontinuous reception parameter The receiving parameter comes from the system broadcast message; if the RRC signaling that triggers the user equipment to perform state transition contains "UTRAN DRX Cycle length coefficient", and the UE selects this parameter for configuration, it will inform the RNC that the discontinuous reception parameter currently used comes from The RRC signaling. This step is optional.

In one embodiment, the state transition of the UE is implemented through a timer mechanism. The specific process is: the RNC configures the discontinuous reception parameter in the discontinuous reception state of the UE in the system broadcast message, and the UE receives and stores the discontinuous reception parameter in the system broadcast message.

The UE in the CELL_PCH state or Cell_FACH and other states starts a timer for judging state transition, and judges whether the UE enters the Cell_PCH state or URA_PCH state from Cell_FACH and other states, or enters the URA_PCH state from the Cell_PCH state. The timer is located at the UE side, and a timer can also be started at the UE side and the network side at the same time. The time value set by the timer can be obtained through a system broadcast message, and can also be configured by the radio network controller through RRC dedicated signaling.

If the amount of data transmission between the UE and the network side is less than a certain value or there is no data transmission when the timer expires, the UE is considered to enter the Cell_PCH state or URA_PCH state, and the Cell_PCH state or URA_PCH state received from the system broadcast message is used The discontinuous reception parameter under.

Fig. 4 shows a simplified block diagram of a discontinuous reception parameter configuration system according to an embodiment of the present invention. Wherein, RNC 408 includes a parameter determination unit 407 for determining discontinuous reception parameters of UE in Cell_PCH state or URA_PCH state, or simultaneously determining discontinuous reception parameters in Cell_PCH state and URA_PCH state. RNC408 adds the parameter into the system broadcast message, and instructs base station 406 to broadcast to UE401. UE401 includes a storage unit 402 , a first judging unit 403 and a first selecting unit 404 . After receiving the system broadcast message, the storage unit 402 is used for storing the discontinuous reception parameter in the system broadcast message, and the first judging unit 403 is used for judging whether the RRC signaling that triggers UE state transition contains the discontinuous reception parameter. The first selection unit 404 is used to select the source of the discontinuous reception parameter according to the judgment result of the judgment unit, if the discontinuous reception parameter is included in the RRC signaling, then select the parameter for configuration, if there is no discontinuous reception parameter in the RRC signaling If the discontinuous reception parameter is included, select the discontinuous reception parameter in the system broadcast message for configuration.

As shown in FIG. 4, UE401 may further include a response unit 405, configured to send a configuration completion response to the radio network controller RNC, and inform itself of the source of the currently used discontinuous reception parameter. If the UE selects the Default UTRAN DRX parameter in the system broadcast message to configure, it will inform the RNC that the discontinuous reception parameter currently used comes from the system broadcast message; if the UE selects the discontinuous reception in the RRC signaling that triggers the UE to perform state transition Parameters are configured, and the RNC is notified that the discontinuous reception parameters currently used come from the RRC signaling.

Fig. 5 shows a simplified block diagram of a user equipment 501 according to another embodiment of the present invention. The user equipment 501 includes a storage unit 502 , a timer 503 , a second judging unit 504 and a second selecting unit 505 . After the user equipment 501 receives the discontinuous reception parameter in the system broadcast message, the storage unit 502 stores the discontinuous reception parameter. The timer 503 and the second judging unit 504 are used to judge whether state transition occurs. The specific method is: the user equipment in the CELL_PCH state or Cell_FACH and other states starts the timer 503, and within the time set by the timer 503, the second The judging unit 504 judges whether the amount of data transmission between the user equipment and the network side is less than a certain value or there is no data transmission, and if it is less than a certain value or there is no data transmission, then it is judged that the user equipment enters the URA_PCH state or the CELL_PCH state. The second selection unit 505 selects whether to use the discontinuous reception parameter received from the system broadcast message according to the judgment result of the second judgment unit 504 . Specifically, if the second judging unit 504 judges that the user equipment enters the URA_PCH state, then use the discontinuous reception parameter in the URA_PCH state received from the system broadcast message.

The drawings and related descriptions are only for illustrating the principles of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims (11)

1. A configuration method for user equipment discontinuously receiving parameters, characterized in that, Configuring discontinuous reception parameters in the discontinuous reception state of the user equipment in the system broadcast message; The user equipment receives and stores the discontinuous reception parameter in the system broadcast message; Start a timer on the user equipment side, if the amount of data transmission between the user equipment and the network side is less than a certain value or there is no data transmission within the time set by the timer, the user equipment enters the discontinuous reception state , and using the corresponding discontinuous reception parameters stored in said system broadcast message, or, When the RRC signaling that triggers the user equipment to perform state transition does not include the discontinuous reception parameter, the user equipment uses the discontinuous reception parameter derived from the system broadcast message. 2. The method for configuring discontinuous reception parameters of user equipment according to claim 1, wherein if the amount of data transmission between the user equipment and the network side is less than a certain value within the time set by the timer Or without data transmission, the user equipment entering the discontinuous reception state includes: If the amount of data transmission between the user equipment and the network side is less than a certain value or there is no data transmission within the time set by the timer, the user equipment enters the Cell_PCH state from the Cell_FACH state, or enters the URA_PCH state from the Cell_PCH state . 3. The method for configuring discontinuous reception parameters of user equipment according to claim 1, characterized in that, The time value set by the timer is obtained through a system broadcast message, or is configured by the radio network controller through RRC dedicated signaling. 4. The method for configuring discontinuous reception parameters of user equipment according to claim 1, wherein when the RRC signaling that triggers the user equipment to perform state transition does not include discontinuous reception parameters, the method further comprises: If the serving cell does not change during transition from other states to the discontinuous reception state, then the user equipment uses the discontinuous reception parameter in the system broadcast message of the serving cell. 5. The method for configuring discontinuous reception parameters of user equipment according to claim 1, wherein when the RRC signaling that triggers the user equipment to perform state transition does not include discontinuous reception parameters, the method further comprises: If the serving cell changes during the transition from other states to the discontinuous reception state, and the user equipment receives and stores the system broadcast message of the new serving cell when performing cell selection, then use the system broadcast message from the new serving cell Discontinuous reception parameters received and stored in the message. 6. The method for configuring discontinuous reception parameters of user equipment according to claim 1, wherein the method further comprises: When the RRC signaling that triggers the user equipment to perform state transition includes the discontinuous reception parameter, the user equipment uses this parameter. 7. The method for configuring discontinuous reception parameters of the user equipment according to claim 1, characterized in that, after the user equipment configures the discontinuous reception parameters, further comprising: notifying the wireless network control via a state transition completion response message source of discontinuous reception parameters used by RNC itself. 8. The method for configuring discontinuous reception parameters of user equipment according to claim 1, wherein the configuration of discontinuous reception parameters in the discontinuous reception state of the user equipment comprises: Configuring the discontinuous reception parameters of the user equipment in the Cell_PCH state or the URA_PCH state, or simultaneously determining the discontinuous reception parameters in the Cell_PCH state and the URA_PCH state. 9. A discontinuous reception parameter configuration system is characterized in that it is mainly composed of a radio network controller RNC and user equipment, wherein RNC, including a parameter determination unit, configured to determine the discontinuous reception parameter delivered through the system broadcast message; User equipment, including: a storage unit, configured to store the discontinuous reception parameter in the system broadcast message, The first judging unit is configured to judge whether the radio resource control RRC signaling that triggers the user equipment to perform state transition includes a discontinuous reception parameter, The first selection unit selects the source of the discontinuous reception parameter according to the judgment result of the judgment unit. 10. A user equipment, comprising: The storage unit is used to store the discontinuous reception parameters in the system broadcast message; The first judging unit is configured to judge whether the radio resource control RRC signaling that triggers the user equipment to perform state transition includes a discontinuous reception parameter; The first selection unit selects the source of the discontinuous reception parameter according to the judgment result of the judgment unit. 11. The user equipment according to claim 10, further comprising a response unit, configured to send a state transition completion response to the radio network controller (RNC) to inform itself of the source of the discontinuous reception parameter used.

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