WO2009129752A1

WO2009129752A1 - Control method and communication equipment for sending information

Info

Publication number: WO2009129752A1
Application number: PCT/CN2009/071462
Authority: WO
Inventors: 李晓卡; 张英
Original assignee: 大唐移动通信设备有限公司
Priority date: 2008-04-25
Filing date: 2009-04-24
Publication date: 2009-10-29
Also published as: CN101568141B; CN101568141A

Abstract

A control method, terminal, base station and radio network controller for sending information, the method includes: A. a terminal sends cell reselection indication that indicates the terminal need to carry on the cell reselection to network side; B. after receiving the cell reselection indication, before the terminal entering a target cell, the network side suspends sending down information to the terminal, so that the network side can aware of that the terminal needs to carry on the cell reselection in time, thereby stop sending down information to terminal.

Description

Information transmission control method and communication device

Technical field

The present invention relates to the field of mobile communication technologies, and in particular, to a method and a communication device for controlling information transmission. Background of the invention

A terminal in a non-idle mode such as a cell forward access channel (CELL_FACH) or a cell paging channel (CELL_PCH) usually measures the main common control physical channel of the serving cell and the neighboring cell in real time (PCCPCH, Primary Common Control Physical The received code power level (RSCP, Received Signal Code Power) of the Channel), if the measurement result satisfies the cell reselection quasiside, the terminal will perform cell reselection autonomously. For example, the RSCP of the neighboring cell PCCPCH is higher than the RSCP of the PCCPCH of the serving cell within the preset duration.

The information of the following lines of data or signaling sent by the network side is difficult to receive and process, and the information is sent to the terminal during the period, because the network sends the information to the terminal during the period of the cell reselection. When the information is lost, it will also waste resources.

For example, if the network side sends downlink data in the cell reselection process of the terminal, the resources occupied when the downlink data is sent are wasted; for example, the network side schedules the terminal in the cell reselection process of the terminal. The terminal allocates a resource for the terminal to upload data and delivers the allocated resource to the terminal, so that the resource allocated to the terminal is wasted and the air interface resource occupied when the resource is delivered is wasted.

Further, in the conventional wireless communication system, the terminal and the network side are usually based on a slow transmission rate such as a forward access channel (FACH) and a random access channel (RACH). Technical interaction information. Such as The terminal in the CELL_FACH mode sends uplink data to the network side based on the RACH in the uplink direction. In the downlink direction, the downlink data sent by the network side is often received based on the FACH.

The development of high-speed data transmission technology has enabled data transmission rates in wireless communication systems to be increased. High-speed data transmission technologies such as High Speed Uplink Packet Access (HSUPA) technology and High Speed Downlink Packet Access (HSDPA) technology.

HSDPA introduces High Speed Downlink Shared Channel (HS-DSCH), High Speed Physical Downlink Shared Channel (HS-PDSCH) and High Speed Shared Control Channel (HS-SCCH, High Speed Shared Control) Channel ), controls the transmission of downlink data. The HS-DSCH and the HS-PDSCH are mainly used for carrying data, and the HS-SCCH is mainly used for carrying control signaling. Corresponding to the HS-SCCH in the downlink direction, a high-speed shared information channel (HS-SICH) is introduced in the uplink direction, and after receiving the relevant information sent by the network side through the HS-SCCH, the bearer terminal The response message returned by the network side.

Enhanced Dedicated Channel (E-DCH) is introduced in HSUPA to enhance the E-DCH Random Uplink Control Channel (E-DUCCH) and enhance the physical uplink channel (E-PUCH, E-DCH Physical). Uplink Channel), which controls the transmission of upstream data. The E-DCH is mainly used to carry uplink data, and the E-PUCH and the E-RUCCH are mainly used for bearer signaling. Corresponding to the E-PUCH in the uplink direction, an enhanced hybrid automatic repeat request response indication channel (E-HICH, E-DCH HARQ Acknowledgement Indicator Channel) is introduced in the downlink direction, and E-RUCCH and E-PUCH in the uplink direction. Correspondingly, an enhanced absolute grant channel (E-AGCH, E-DCH Absolute Grant Channel) is introduced in the downlink direction. E-HICH and E-AGCH It can be used by the bearer terminal to receive the relevant information sent by the network side, and the response returned to the network side has been proposed. The high-speed data transmission technology is applied to the traditional communication technology, for example, in the downlink direction, HSDPA technology is used instead. Traditional FACH technology, and/or, in the upstream direction, uses HSUPA technology to replace traditional RACH technology.

For the cell reselection of the terminal, the change of data transmission technology will make the waste of resources more serious. For example, in the terminal cell reselection process, the network side transmits downlink data based on HSDPA, because the data transmission rate is high, and the data occupied by the downlink data is wasted while the data is lost.

Therefore, in the prior art, when the cell reselection process of the terminal is involved, the processing solution for transmitting information on the network side needs to be improved. Summary of the invention

A main object of the present invention is to provide a method for controlling information transmission, which can prevent the network side from transmitting information to a terminal that needs to perform cell reselection, thereby saving resources.

Another object of the present invention is to provide a terminal that can prevent a network from transmitting information to a terminal that needs to perform cell reselection, thereby saving resources.

A further object of the present invention is to provide a base station, which can prevent a network from transmitting information to a terminal that needs to perform cell reselection, thereby saving resources.

A further object of the present invention is to provide a radio network controller that can prevent a network from transmitting a message to a terminal that needs to perform cell reselection, thereby saving resources.

The present invention provides a method for controlling information transmission, including:

A. The terminal sends a cell reselection indication indicating that the terminal needs to perform cell reselection to the network side;

B. After receiving the cell reselection indication, the network side enters the target cell at the terminal. Before, the information is sent to the terminal.

The invention provides a terminal, comprising:

And an indication sending unit, configured to send, to the network side, a cell reselection indication indicating that the terminal needs to perform cell reselection.

The present invention provides a base station, including: an indication receiving processing unit and a transmission control unit, where

And an indication receiving processing unit, configured to receive and parse a cell reselection indication sent by the terminal that indicates that the terminal needs to perform cell reselection;

And a sending control unit, configured to suspend sending information to the terminal before the terminal enters the target cell after the indication receiving processing unit parses the cell reselection indication.

The present invention provides a radio network controller, including: an indication receiving processing unit, a transmission control unit, and a notification sending unit, where

The indication receiving processing unit is configured to receive and parse a cell reselection indication from the terminal that is forwarded by the base station, indicating that the terminal needs to perform cell reselection;

The sending control unit is configured to: after the instructing the receiving processing unit parses the cell reselection indication, before the terminal enters the target cell, suspending sending data belonging to the terminal to the base station;

The notification sending unit is configured to: after the indication receiving processing unit parses the cell reselection indication, send, to the base station, the base station to request that the base station pause to be sent to the terminal before the terminal enters the target cell. Notification of the information.

In summary, the foregoing technical solution provided by the present invention, when the terminal needs to perform cell reselection, the terminal sends the cell reselection indication to the network side, so that the network side knows in time that the terminal needs to perform cell reselection, thereby suspending the direction. The terminal sends information to avoid waste of resources caused by sending information. BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the present invention will become more apparent to those skilled in the <

1 is a flow chart of control information transmission in Embodiment 1 of the present invention;

2 is a flowchart of control information transmission in Embodiment 2 of the present invention;

3 is a schematic structural diagram of a terminal in Embodiment 3 of the present invention;

4 is a schematic structural diagram of a base station in Embodiment 4 of the present invention;

Figure 5 is a schematic structural view of an RNC in Embodiment 4 of the present invention;

6 is a schematic structural view of an RNC according to Embodiment 5 of the present invention;

FIG. 7 is a schematic structural diagram of a base station in Embodiment 5 of the present invention. Mode for carrying out the invention

In the prior art, when the terminal needs to perform cell reselection, if the network side sends the information to the terminal, the terminal is difficult to receive and process the sent information, resulting in waste of resources. Considering that the cell reselection of the terminal is performed autonomously, the network side cannot be known. Therefore, in the present invention, in order to enable the network side to know the cell reselection performed by the terminal in time, the control information is sent, and the terminal needs to perform the cell. In the case of reselection, a cell reselection indication indicating that cell reselection is required is sent to the network side to notify the network side; after receiving the cell reselection indication, the network side completes the cell reselection, or the terminal enters Before the target cell, the following data or signaling information is sent to the terminal. Subsequently, after detecting that the terminal enters the target cell, the network side sends the information to the terminal.

In order to make the technical solutions and advantages of the present invention more clear, the following detailed description will be made in conjunction with the specific embodiments and the accompanying drawings.

In a specific implementation of the present invention, the manner in which the terminal sends the cell reselection indication to the network side may be multiple, as listed in the embodiment of the present invention, the terminal passes the physical layer signaling, or passes the wireless The RRC (Radio Resource Control) layer message signaling or high layer signaling sends a cell reselection indication to the network side. If the cell reselection indication is sent by the physical layer signaling, the base station directly resolves the cell reselection indication based on the physical layer on the network side; if the terminal sends the cell reselection indication through the message signaling, the network side The RNC directly communicates with the terminal to parse the cell reselection indication, but only needs to receive and forward the message signaling to the RNC through the base station.

After receiving the cell reselection indication, the network side may return a response indicating that the cell reselection indication is successfully received, and the terminal performs the cell reselection after receiving the response; or the network side does not The terminal side returns a response, and after transmitting the cell reselection indication, the terminal directly performs cell reselection without waiting for a response returned by the network side. In addition, in the above confirmation mode, in order to prevent the terminal side from waiting for the response returned by the network side to be too long, it may be set to directly perform the cell reselection if the terminal does not receive the response returned by the network side within the preset time period.

In addition, in an actual application, the terminal may be configured to determine whether to send a cell reselection indication, and if necessary, send, otherwise, according to the processing procedure of the existing cell reselection, directly perform cell reselection without sending a cell weight to the network side. Choose instructions.

Embodiment 1:

In the first embodiment, the terminal sends a cell reselection indication through physical layer signaling, and the information interaction mode between the network side and the terminal is an acknowledgment mode, and the terminal performs a decision process on whether to send a cell reselection indication to the network side.

Referring to FIG. 1, FIG. 1 is a flowchart of control information transmission in Embodiment 1 of the present invention, and the process may include the following steps:

Step 101: The terminal determines that cell reselection needs to be performed.

The terminal detects that the PCCPCH RSCP of the neighboring cell is higher than the preset threshold of the PCCPCH RSCP of the serving cell within the preset duration, and determines the need based on the existing cell reselection criteria. To perform cell reselection.

Step 102: The terminal determines whether to send a cell reselection indication to the network side, and if it is determined to send, perform step 103; otherwise, perform cell reselection and subsequent processing based on the existing cell reselection process.

In this embodiment, the following three methods are used to determine whether the terminal sends a cell reselection indication to the network side:

1. The terminal determines whether it is synchronized with the network side. If it is synchronized, it is determined that the cell reselection indication needs to be sent, otherwise, it is determined that it is not required to be sent; or,

2. The terminal determines whether the indication that the data buffer amount is not zero is sent to the network side, but the indication that the data buffer quantity is zero has not been sent. If yes, it is determined that the cell reselection indication needs to be sent. Otherwise, it is determined that the cell weight is not required to be sent. Selection instruction; or,

3. The terminal determines whether it is in the continuous scheduling state. If yes, it determines that the cell reselection indication needs to be sent. Otherwise, the cell reselection indication does not need to be sent.

Specifically, for the first type of judgment, when the base station allocates resources for the terminal and allocates the resource information to the terminal, the base station usually needs to keep the synchronization with the base station, so that the information exchanged between the base station and the terminal can be ensured. Received by the other party to avoid waste of air interface resources. Based on the capabilities of existing base stations and terminals, both parties can detect if the other party is synchronized with itself. For a terminal that is synchronized with the base station, the base station may schedule the terminal at any time. Correspondingly, the base station does not normally schedule a terminal that is not synchronized with itself, or the scheduling terminal performs synchronization processing with the terminal first. Therefore, in a specific implementation of the present invention, if the terminal detects that it is not synchronized with the base station, it does not need to send a cell reselection indication to the base station; if the terminal detects that it is synchronized with the base station, it needs to send a cell reselection to the base station. The indication is to notify the base station terminal to enter the cell reselection process, thereby preventing the base station from scheduling the terminal and avoiding waste of resources.

For the second determination basis, before the terminal sends the uplink data to the base station, the terminal needs to receive the scheduling instruction of the base station, and use the resource allocated by the base station to send the uplink data, as shown in the foregoing direction. The case of transferring data based on HSUPA. The scheduling of the terminal by the base station is usually based on the data buffer amount of the terminal reported by the terminal or the amount of data to be sent on the terminal. In a specific implementation of the present invention, if the terminal detects that the data buffer amount of the terminal is zero, and the indication that the data buffer amount is zero is sent to the base station, it may be inferred that the data buffer amount of the terminal maintained by the base station is zero. The base station does not schedule the terminal, and accordingly, does not send scheduling signaling to the terminal. Therefore, it is not necessary to send a cell reselection indication to the network side. If the terminal has sent an indication that the data buffer amount is not zero to the base station, and if the indication that the data buffer amount is not zero, but has not yet reached the data buffer amount is not zero, the base station maintains the The data buffer of the terminal is not zero, and the terminal may be scheduled subsequently. Therefore, in order to save resources, the terminal needs to send a cell reselection indication to the network side. After receiving the cell reselection indication, the network side pauses scheduling the terminal, that is, does not allocate resources for the terminal, and does not use resources to send scheduling signaling to the terminal.

For the third judgment basis, the continuous scheduling state of the terminal means that the time interval between two adjacent terminals of the terminal is shorter, within a preset value, and can be continuously scheduled more frequently within a preset duration. status. Conversely, if the time interval in which the terminal is scheduled twice is longer, it may be determined that the terminal is in a non-continuous scheduling state. The scheduling interval can be defined by the timer T. The timer T can take the same value as the uplink synchronization timer (Tsync) or the same value as the associated timer (T-WAIT) reported by the uplink scheduling information SI. For the terminal in the continuous scheduling state, it may be determined that the network side continuously sends the scheduling signaling to the terminal. If the terminal needs to perform cell reselection in this case, the cell reselection indication needs to be sent to the network side; The terminal of the state may not need to send a cell reselection indication to the network side.

Of course, in practical applications, other judgments can also be considered.

In an actual application, it may be configured that if the terminal needs to perform cell reselection, the cell reselection indication is sent to the network side, so as to prevent the network side from reselecting the terminal cell, Send any information, resulting in wasted resources.

Step 103: The terminal requests, from the network side, the resource required for the cell reselection indication to be sent, and sends a cell reselection indication to the network side base station by using an uplink channel capable of transmitting signaling, based on physical layer signaling.

Generally, when the terminal needs to send uplink data, the terminal needs to obtain resources allocated by the network side. Therefore, in this embodiment, the terminal needs to be scheduled to be scheduled, such as performing a random access procedure, or may also perform a cell reselection indication. The uplink synchronization process is required. The process of requesting resources by the terminal is prior art and will not be described again. In addition, although the terminal sends a cell reselection indication to the network side, although it occupies some resources, these resources are negligible compared to resources that may be wasted by the network side without knowing the cell reselection of the terminal.

In an actual application, if the uplink synchronization process or the random access procedure times out, the terminal directly performs cell reselection, and no longer sends a cell reselection indication to the network side.

The terminal sends the cell reselection indication through physical layer signaling, such as:

In the communication system, if the HSUPA technology is adopted in the uplink direction, the terminal may send the cell reselection indication to the base station through the uplink channel E-RUCCH or the E-PUCH; or, if the HSDPA technology is adopted in the downlink direction, the terminal may pass The uplink channel HS-SICH corresponding to the downlink channel HS-SCCH transmits a cell reselection indication to the base station; or

If the uplink data still uses the traditional data transmission technology, the terminal may send a cell reselection indication to the base station through a Physical Random Access Channel (PRACH).

Specifically, if the terminal sends a cell reselection indication through the E-RUCCH or the E-PUCH, the cell reselection indication may be embodied by the uplink scheduling information (SI) carried on the E-RUCCH or the E-PUCH. Generally, the SI includes the following information fields: TEBS (Total E-DCH Buffer Status) information field, highest priority logical channel buffer (HLBS, Highest Priority Logical Channel Buffer Status) information field , The highest priority logical channel identifier (HLID, Highest Priority Logical Channel Identifier) information field. The cell reselection indication may be embodied based on values such as TEBS, HLBS, or HLID.

Generally, if the TEBS value is zero, the Bay' J HLBS must also take a value of zero. Otherwise, the network side will determine that the received SI information is abnormal. In a specific implementation of the present invention, a cell reselection indication may be indicated by using TEBS=0, HLBS=m, and m being a non-zero value. After receiving the SI, the network side can know that the terminal satisfies the cell reselection criterion and needs to perform cell reselection without processing the SI information as abnormal information. Alternatively, the preset value of the HLID may be used to indicate the cell reselection indication, as specified by the protocol, if the base station receives the SI, HLID=n, and n is a preset value for indicating the cell reselection indication, the network side It is known that the terminal needs to perform cell reselection.

If the terminal sends a cell reselection indication through the HS-SICH, the cell reselection indication may be a preset value of a transport block size (RTBS) information field in a channel quality indicator (CQI, Channel Quality Indicator) carried by the HS-SICH. To represent. The existing RTBS occupies 6 bits, and usually, the value of the 6 bits is not all zero or non-full. Therefore, in a specific implementation, the 6-bit RTBS preset value is equal to all "Γ" or all "0" indicates the cell weight. Choose instructions.

In practical applications, the cell reselection indication may also be carried through other information fields or other representations of the relevant channel.

Step 104: After receiving the cell reselection indication from the uplink channel used by the terminal in step 103, the base station returns a response indicating that the cell reselection indication is successfully received to the terminal by using the downlink channel corresponding to the uplink channel.

In the foregoing step 103, if the terminal sends a cell reselection indication through the E-RUCCH or the E-PUCH, the network side may return a response through the E-AGCH, and accordingly, the terminal monitors the E-AGCH, and the receiving network side sends the response. Or, if the terminal sends a cell reselection indication through the E-PUCH, the network side returns a response through the E-HICH, and accordingly, the terminal monitors the E-HICH, and receives a response sent by the network side; if the terminal passes the HS-SICH Sending cell weight In response to the selection, the network side returns a response through the HS-SCCH. Accordingly, the terminal side monitors the HS-SCCH and receives the response sent by the network side. In addition, the response returned by the network side may be a response indicating that the cell reselection indication is successfully received, such as an acknowledgment response (ACK), or may be a response indicating that the cell reselection indication is not successfully received, such as a non-acknowledgement response ( NACK). In an actual application, if the terminal receives the NACK, the cell reselection indication may be retransmitted to the network side based on the retransmission mechanism.

The following is a list of specific forms of the network side return that can be used in the specific implementation of the present invention to indicate that the response to the cell reselection is successfully received, as shown in Tables 1 and 2, respectively.

Code channel resource information (Channelisation-code-set

8

Information ) Time slot information 5

Modulation scheme information 1

Transport block size information ( Transport-block size

6

Information )

Hybrid automatic retransmission process information (Hybrid- ARQ process

3

Information )

Redundancy version information 3

New data indicator 1

HS-SCCH cyclic sequence number 3

Channel structure of HS-SCCH

Both Table 1 and Table 2 above refer to slot resource information occupying 5 bits. Generally, the 5 bits occupied by the time slot resource information are non-zero values, and the terminal can learn the time slot resources allocated by the network side based on the value; if the time slot resource information is zero, the terminal cannot recognize the current resource based on the existing specifications. value. If the network side sends a response through the E-AGCH or the HS-SCCH according to the specific deployment of the wireless network, in the specific implementation of the present invention, the 5-bit time slot resource information set to all zero values may be used to indicate the network side. If the cell reselection indication is successfully received by the terminal, if the time slot resource information received by the terminal through the E-AGCH or the HS-SCCH is all zero, the network side can successfully determine that the cell reselection indication is successfully received; If the 5 bits occupied by the received time slot resource information are non-zero values, or the network side feedback information is not received, the terminal determines that the network side fails to successfully receive the cell reselection indication based on the acknowledge mode. In practical applications, the terminal retransmission cell reselection indication may be set.

Or, according to the specific deployment of the wireless network, if the network side sends a response through the HS-SCCH If yes, the preset value of the code channel resource information in Table 2 may be used to indicate that the network side successfully receives the cell reselection indication. Usually, the 8-bit code channel resource is divided into two parts, a 4-bit Start Code and a 4-bit Stop Code, and usually the start code is smaller than the termination code. In the specific implementation of the present invention, the manner that the start code is greater than the termination code may be used to indicate that the network side successfully receives the cell reselection indication. If the start code is greater than the termination code in the code channel resource information received by the terminal through the HS-SCCH, the network side may be determined to successfully receive the cell reselection indication; otherwise, if the code channel resource information is received, the start code If the termination code is less than the termination code, or the feedback is not received, the terminal determines that the network side fails to successfully receive the cell reselection indication based on the acknowledgement mode. In an actual application, a terminal retransmission cell reselection indication may be set.

In actual applications, a form that reflects the response of the network side to successfully receive the cell reselection indication may also be set according to actual needs.

The prior art for carrying ACK or NACK through E-HICH is not described in this application.

Step 105: The base station, according to the received cell reselection indication, suspends the delivery of the information to the terminal, releases the related data, and notifies the RNC to suspend the information belonging to the terminal.

After receiving the cell reselection indication, the base station learns that the terminal needs to perform cell reselection, and then suspends the delivery of the information to the terminal by starting the flow control of the Iub interface. In this embodiment, since the terminal sends the cell reselection indication through physical layer signaling, the base station controls the transmission of the downlink information by starting traffic control of the Iub interface. The Iub interface is a communication interface between the base station and a Radio Network Controller (RNC).

Specifically, after receiving the cell reselection indication, the base station stops scheduling the terminal in time, and notifies the RNC to stop sending data belonging to the terminal to the base station. For the data to be sent to the terminal that the RNC has sent to the base station, the base station also stops sending the data to the terminal in time to avoid wasting resources.

The data released by the network side may include resources and context letters belonging to the terminal. Interest and so on. The context information includes synchronization status information, cache status information, and the like related to the terminal. The resource is, for example, the data of the terminal, the dedicated identifier of the terminal, and the like, and the base station sends the released data information to the RNC through the frame protocol (FP, Frame Protocol) of the lub interface user plane, and notifies the RNC which resources need to be Release, or the base station sends a cell reselection indication to the RNC, and the RNC can use the released resources for other purposes to improve resource utilization. The release of data information can also save the memory space of the base station.

In addition, if the base station releases the cached data, the data may be lost. The base station may also take the following measures to process the data that is buffered by the RNC and belongs to the terminal in the base station, such as:

The base station returns the cached data to the RNC through the lub interface user plane address belonging to the terminal with the RNC; after receiving the returned data, the RNC can determine which terminal the data belongs to and cache again for resending. The base station returns the buffered data to the RNC to avoid data loss and ensure the quality of service of the user's service.

Step 106: After receiving the response returned by the network side indicating that the cell reselection indication is successfully received, the terminal performs cell reselection to enter the target cell.

For details on the process of cell reselection of the terminal, refer to related materials, and no further description is provided in this application. Step 107: After detecting that the terminal enters the target cell, the network side determines that the terminal completes cell reselection.

In the step 107, the detecting function of the network side to the terminal to enter the target cell is prior art. It should be noted that, in the actual application, if the network side does not release the related data in the above step 105, the operation of releasing the data may also be performed after the network side determines that the terminal completes the cell reselection in step 107.

Subsequently, the network side and the terminal entering the target cell can exchange information based on existing related technologies.

The flow of the above first embodiment ends. Embodiment 2:

In the second embodiment, the terminal sends a cell reselection indication to the network side through message signaling; the interaction mode between the network side and the terminal is an unacknowledged mode. In the second embodiment, the terminal does not send a cell reselection indication to perform a judgment process, but directly sends a cell reselection indication.

Referring to FIG. 2, FIG. 2 is a flowchart of control information transmission in Embodiment 2 of the present invention, and the process may include the following steps:

Step 201: The terminal determines that cell reselection needs to be performed.

For the specific implementation of the step 201, refer to the foregoing step 101, and details are not described herein again.

Step 202: The terminal requests the network side to send the resource required for the cell reselection indication, and sends the cell reselection indication to the network side by using the RRC layer message signaling.

The message signaling is usually used for the dialogue between the terminal and the RNC, and the terminal forwards the message signaling carrying the cell reselection indication to the RNC through the base station.

In a specific implementation of this embodiment, the RRC layer message signaling may be a measurement report message (Measure Report), or a cell update message (Cell Update), or a preset message body for sending a cell reselection indication.

Specifically, the measurement report message includes a measurement result of a radio resource control (RRC) layer that meets a cell reselection criterion measured by the terminal, such as a measurement result of the PCCPCH RSCP of the serving cell and the neighboring cell by the terminal, and uses the measurement result to represent Cell reselection indication; or,

An information field (CELL Reselection Indicator) for indicating a cell reselection indication is set in the cell update message, and a cell reselection indication is indicated by using a preset value of the information field; or, a message body is preset, and the message body is dedicated. Carry the cell reselection indication.

According to the specific deployment of the wireless network, the foregoing RRC layer message signaling may be sent to the network side through an uplink channel such as RACH or E-DCH.

Step 203: The RRC layer message that is received by the network side base station to carry the cell reselection indication After the RNC parses the cell reselection indication, the RNC pauses to send information belonging to the terminal to the base station, and notifies the base station to suspend the information belonging to the terminal, and the base station releases the related data.

After parsing the cell reselection indication, the RNC performs the process of sending the information to the base station, such as: stopping the transmission of the data to be sent to the terminal to the base station in time; and transmitting to the base station through the user plane of the lub interface belonging to the terminal with the base station. The cell reselection indication; after receiving the cell reselection indication, the base station stops the scheduling terminal in time, and stops sending downlink data to the terminal.

In this embodiment, the manner in which the network side releases the related data and the manner in which the base station processes the cached data can be referred to the specific implementations listed in the step 105 of the first embodiment, and will not be described again.

Step 204: After the terminal sends the cell reselection indication, perform cell reselection to enter the target cell.

Step 205: After detecting that the terminal enters the target cell, the network determines that the terminal completes cell reselection.

In an actual application, the data release operation performed by the network side in the foregoing step 203 may be performed after the network side determines that the terminal enters the target cell in the step 205.

The process of the above second embodiment ends.

In the first embodiment and the second embodiment, the network side is configured to perform cell reselection based on the cell reselection indication sent by the terminal, so as to stop sending information to the terminal in time to avoid resource waste.

Embodiment 3:

Based on the above solution, the present invention further provides a terminal. Referring to FIG. 3, FIG. 3 is a schematic structural diagram of an example of the terminal. The terminal may include: an indication sending unit 301, configured to send to the network side that the terminal needs to perform cell reselection. Cell reselection indication.

The terminal may further include a response receiving unit 302 for indicating the sending unit 301. After the cell reselection indication is sent, the receiving network sends a response indicating that the network side successfully receives the cell reselection indication.

Subsequently, after the cell reselection indication is sent to the network side by the indication sending unit 301, or after the receiving unit 302 receives the response indicating that the cell reselection indication is successfully received, the terminal performs a cell reselection operation.

Embodiment 4:

The present invention provides a base station. Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a base station according to Embodiment 4 of the present invention. In this example, the terminal sends a cell reselection indication by using physical layer signaling. Correspondingly, the network side receives the cell reselection indication sent by the terminal based on the physical layer conversation with the terminal. The base station may include: an indication receiving processing unit 401 and a transmission control unit 402, where

The indication receiving processing unit 401 is configured to receive and parse the cell reselection indication sent by the terminal, indicating that the terminal needs to perform cell reselection;

The sending control unit 402 is configured to suspend the sending of information to the terminal before the terminal enters the target cell after the receiving the processing unit 401 parses the cell reselection indication.

The base station shown in FIG. 4 may further include: a notification sending unit 403, configured to: after the indication receiving processing unit 401 parses the cell reselection indication, send the requesting RNC to the RNC to pause to deliver the information belonging to the terminal before the terminal enters the target cell. Notice.

Correspondingly, referring to FIG. 5, FIG. 5 is a schematic structural diagram of an RNC in the fourth embodiment, where the RNC may include a notification receiving unit 501 and a notification executing unit 502.

The notification receiving unit 501 is configured to receive the notification sent by the notification sending unit 403. The notification executing unit 502 is configured to perform the operation of the notification, that is, before the terminal enters the target cell, pause sending the data, signaling, etc. belonging to the terminal. information.

The notification sent by the notification sending unit 403 may be a cell reselection indication or other representation. In addition, the base station shown in FIG. 4 may further include:

The data processing unit 404 is configured to: after instructing the receiving processing unit 401 to receive the cell reselection indication, send data belonging to the terminal buffered in the base station to the RNC, thereby preventing data loss. Accordingly, referring to FIG. 5, a data recovery unit 503 can be set on the RNC for recovering data returned by the data processing unit 404.

Alternatively, regardless of the data loss problem, as shown by the dotted line in FIG. 4, a data release unit 405 may be provided in the base station for releasing the cached data belonging to the terminal after the indication receiving processing unit 401 receives the cell reselection indication.

In addition, based on the data release unit 405, a release information indication unit 406 may be further disposed, after the data release unit 405 releases the data, and notify the RNC that the released data message is correspondingly, as indicated by the dotted line in FIG. 5, and may be on the RNC. The setting data release information receiving unit 504 is configured to receive an indication of the material information sent by the release information indicating unit 406.

Embodiment 5:

The present invention further provides a radio network controller. Referring to FIG. 6, FIG. 6 is a schematic structural diagram of an RNC according to Embodiment 5 of the present invention. In this example, a terminal sends a cell reselection indication through RRC layer message signaling, and correspondingly, The network side directly talks with the terminal by the RNC based on the RRC layer, but only needs to forward the signaling of the cell reselection indication sent by the terminal through the base station.

In FIG. 6, the RNC may include: an indication receiving processing unit 601, a transmission control unit 602, and a notification transmitting unit 603, where

An indication receiving processing unit 601, configured to receive and parse a cell reselection indication from the terminal that is forwarded by the base station, indicating that the terminal needs to perform cell reselection;

The sending control unit 602 is configured to: after the terminal receiving the cell reselection indication is parsed, before the terminal enters the target cell, suspend transmitting data belonging to the terminal to the base station; and the notification sending unit 603 is configured to indicate the receiving processing unit 601. Parsing out cell reselection After the indication, the base station is sent to notify the base station to suspend the notification of the information belonging to the terminal before the terminal enters the target cell.

Correspondingly, referring to FIG. 7, FIG. 7 is a schematic structural diagram of a base station in Embodiment 5 of the present invention, where a notification receiving unit 701 and a notification executing unit 702 are set on the base station.

The notification receiving unit 701 is configured to receive the notification sent by the notification sending unit 603. The notification executing unit 702 is configured to perform the operation of the notification after the notification receiving unit 701 receives the notification, that is, suspend the terminal to the terminal before the terminal enters the target cell. Send a message.

If the data processing unit that returns the cache data by the user is set on the base station, the data recovery unit for recovering the data returned by the base station needs to be set on the RNC correspondingly.

In addition, if the data release unit is set on the base station, and the release information indication unit is configured to notify the RNC of the released data information, the data release information needs to be set on the RNC. And a unit, configured to receive data information released by the base station and sent by the base station.

In summary, the foregoing technical solution provided by the embodiment of the present invention, when the terminal needs to perform cell reselection, the terminal sends the cell reselection indication to the network side, so that the network side knows in time that the terminal needs to perform cell reselection. Therefore, the control can stop sending information to the terminal, thereby avoiding waste of resources caused by sending the information. Further, if the delivered information includes resources allocated to the terminal, the waste of the resources may be further avoided. Moreover, after the network side learns that the terminal needs to perform cell reselection, it stops sending information to the terminal, thereby avoiding data loss, thereby ensuring the service quality of the user service.

In conclusion, the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A control method for information transmission, comprising:

B. After receiving the cell reselection indication, the network side suspends sending information to the terminal before the terminal enters the target cell.

2. The method according to claim 1, wherein before the step A, the method further comprises:

The terminal determines that the cell reselection indication needs to be sent to the network side.

The method according to claim 2, wherein the determining, by the terminal, that the cell reselection indication needs to be sent to the network side comprises:

The terminal determines that cell reselection needs to be performed, and determines that any of the following conditions are met, and then determines that the cell reselection indication needs to be sent to the network side:

The terminal determines that an indication that the amount of data buffer is not zero is sent to the network side; or, the terminal determines that the network side is in a synchronized state; or

The terminal determines that it is in a continuous scheduling state; or,

The terminal determines that it is in the process of synchronization; or,

The terminal determines that it is in the process of receiving downlink data.

4. The method of claim 1 wherein:

And the sending, by the terminal, the cell reselection indication to the network side, where the terminal sends the cell reselection indication to the base station on the network side by using physical layer signaling;

The receiving, by the network side, the cell reselection indication includes: the base station receiving the physical layer signaling, and parsing the cell reselection indication.

The method according to claim 4, wherein the terminal sets the cell The reselection indication is sent to the base station by physical layer signaling, including:

Transmitting, by the terminal, the cell reselection indication by using an enhanced uplink random access control channel E-RUCCH, or an enhanced physical uplink channel E-PUCH, or a high-speed shared information channel HS-SICH, to send the cell reselection indication to the Said base station.

The method according to claim 5, wherein the terminal carries the cell reselection indication by using an E-RUCCH or an E-PUCH, and sending the cell reselection indication to the base station includes:

And the terminal sends the cell reselection indication to the uplink scheduling information SI carried by the E-RUCCH or the E-PUCH, and sends the SI to the base station by using the E-RUCCH or the E-PUCH.

The method according to claim 6, wherein the terminal carrying the cell reselection indication in the SI includes:

The cell reselection indication is represented by a preset value of a logical channel identifier HLID information field of a highest priority of the SI; or

The cell reselection indication is represented by a preset value of a ratio of a maximum priority logical channel buffer of the SI to a total cache HLBS information field and a preset value of a total amount of a logical channel of the SI TEBS information field.

The method according to claim 5, wherein the terminal carries the cell reselection indication by using an HS-SICH, and the sending of the cell reselection indication to the base station includes: The cell reselection indication is represented by a preset value in the transport block size RTBS information field in the channel quality indication CQI of the HS-SICH bearer, and the CQI is sent to the base station through the HS-SICH.

The method according to claim 4, wherein the receiving, by the base station, the physical layer signaling, and after parsing the cell reselection indication, further comprising:

Sending, by the base station, a requesting RNC to the network side radio resource controller RNC at the terminal Before entering the target cell, suspending the notification of the information belonging to the terminal;

After the RNC receives the notification, the RNC performs the operation of the notification.

10. The method of claim 1 wherein:

And the transmitting, by the terminal, the cell reselection indication to the network side, where the terminal carries the cell reselection indication in the radio resource control RRC layer message signaling, and forwards the RNC to the network side RNC through the base station on the network side;

The receiving, by the network side, the cell reselection indication includes: the RNC receiving the RRC layer message signaling, and parsing the cell reselection indication.

11. The method of claim 10, wherein

The RRC layer message signaling includes: a measurement report message, where the measurement report message carries a measurement result of an RRC layer that meets a cell reselection criterion measured by the terminal, where the cell reselection indication is represented by the measurement result ; or,

The RRC layer message signaling includes: a cell update message, where the cell update message carries the cell reselection indication; or

The RRC layer message signaling includes: a preset message body, where the preset message body carries the cell reselection indication.

The method according to claim 10, wherein the sending, by the network side, the sending of information to the terminal comprises:

The RNC suspends the information that belongs to the terminal to the base station, and sends a notification to the base station that the base station is required to suspend the information belonging to the terminal before the terminal enters the target cell;

After the base station receives the notification, the operation of the notification is performed.

The method according to claim 9 or 12, wherein the notification of suspending the information belonging to the terminal is a cell reselection indication.

14. The method according to claim 1, wherein the network side receives the location After the cell reselection indication, the method further includes:

RNC; or,

The base station releases its own cached data belonging to the terminal.

The method according to claim 14, wherein, after the base station releases the data that belongs to the terminal that is cached by the base station, the method further includes:

The base station indicates the released data to the RNC.

The method according to claim 15, wherein the data comprises one or any combination of the following:

Data to be sent to the terminal, identification information of the terminal, and context information of the terminal.

The method according to claim 1, wherein after the step A, the method further comprises:

The terminal performs cell reselection and enters the target cell.

The method according to claim 17, wherein before the terminal performs cell reselection, the method further includes:

After receiving the cell reselection indication, the network side returns a response indicating that the cell reselection indication is successfully received to the terminal;

The terminal receives the response.

The method according to claim 18, wherein the response is represented by slot resource information of an enhanced absolute grant channel E-AGCH or a high speed shared control channel HS-SCCH, and the slot resource information is all zeros. Value; or,

The response is represented by code channel resource information of the HS-SCCH, and the start code in the code channel resource information is greater than the termination code.

20. A terminal, comprising: And an indication sending unit, configured to send, to the network side, a cell reselection indication indicating that the terminal needs to perform cell reselection.

The terminal according to claim 20, wherein the terminal further comprises:

The response receiving unit is configured to: after the indication sending unit sends the cell reselection indication, receive a response that is sent by the network side to indicate that the network side successfully receives the cell reselection indication.

A base station, comprising: an indication receiving processing unit and a transmission control unit, where

The base station according to claim 22, wherein the base station further comprises:

a notification sending unit, configured to: after the indication receiving processing unit parses the cell reselection indication, send, to the radio network controller RNC, the RNC to suspend delivery to the terminal before the terminal enters the target cell Notification of the information.

The base station according to claim 22, wherein the base station further comprises: a data processing unit, or a data release unit, or a data release unit and a release information indication unit;

a data processing unit, configured to send, after the indication receiving processing unit receives the cell reselection indication, data belonging to the terminal buffered in the base station to the RNC, and a data release unit, configured to After receiving the cell reselection indication, the indication receiving processing unit releases the cached data belonging to the terminal;

a release information indicating unit, configured to notify the office after the data release unit releases the data Information about the information that the RNC was released.

A radio network controller, comprising: an indication receiving processing unit, a sending control unit, and a notification sending unit, where

The notification sending unit is configured to: after the indication receiving processing unit parses the cell reselection indication, send the request to the base station to request that the base station pause to send the terminal to the terminal before the terminal enters the target cell. Notification of the information.

The radio network controller according to claim 25, wherein the radio network controller further comprises:

And a data recovery unit, configured to receive data that is returned by the base station and is cached in the base station and belongs to the terminal.

The data release information receiving unit is configured to receive the released material information sent by the base station.