CN103716912A

CN103716912A - Method, apparatus and system for releasing radio resource control (RRC) connection.

Info

Publication number: CN103716912A
Application number: CN201210379875.8A
Authority: CN
Inventors: 陈东; 张英; 全海洋
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-10-09
Filing date: 2012-10-09
Publication date: 2014-04-09
Anticipated expiration: 2032-10-09
Also published as: CN103716912B

Abstract

The invention discloses a method, apparatus and system for releasing radio resource control (RRC) connection, for solving the problem that when a terminal finishes data transmission, a network side has to send a lot of RRC signaling to each terminal to release the RRC connection of each terminal, causing quite high air interface signaling cost in the prior art. The method provided by the embodiments of the invention comprises the following steps: a terminal, when it is determined that a MAC PDU currently sent to a network side is the last MAC PDU, sending to the network side an indication indicating that all data is sent; and after receiving an ACK message fed back by the network side, the terminal releasing the RRC connection of itself and entering an idle state. According to the embodiments of the invention, when the terminal finishes sending all the data, through the indication which is sent to the network side for indicating that all the data is sent, the network side does not have to send an air interface signaling to the terminal, and the RRC connection of the terminal can also be released, thus signaling transmission can be optimized, and network resources are saved.

Description

A kind of method, Apparatus and system that discharges Radio Resource control connection

Technical field

The present invention relates to wireless communication technology field, particularly a kind of method that radio resource control RRC connects and Apparatus and system connecting for discharging RRC of discharging.

Background technology

Machine and machine (Machine to Machine, M2M) communication refers to the communication between machine and machine, different with traditional person to person (Human to Human, H2H) communication, M2M communication can complete collection, processing and the transmission of data automatically, and without manual intervention.For example, water meter statistics, ammeter statistics, gas meter statistics, hydrologic monitoring etc., these user terminals or belong to same user, for example, belong to the ammeter of same Utilities Electric Co., belong to the water meter of same Running-water Company etc., or distribute than comparatively dense in a region, for example, hydrologic monitoring.

The communication of M2M business can adopt communicate by letter with traditional H2H identical RRM and data receiver formula.An outstanding feature of M2M communication is that user terminal is many, and the number of machine type communication (Machine Type Communication, MTC) terminal is much larger than the user terminal of H2H, normally tens of H2H terminal times.Its another feature is that the time of carrying out transfer of data between MTC terminal and network side is controlled, and the MTC terminals such as like water meter, ammeter, gas meter can be constrained on certain concentrated time period to network side reported data.

From wireless network side, as in Long Term Evolution (Long Term Evolution, LTE) system, terminal has two states, and RRC_connected(connects) state and RRC-idle(free time) state; And for example at universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) in, terminal has five kinds of states, be that cell-dch state, cell_fach state, cell_pch/ura_pch state and idle(are idle) state, wherein, cell-dch state, cell_fach, cell_pch/ura_pch are connection status.No matter be in LTE system or UMTS, if terminal is current in idle condition, and this terminal need to send data, this terminal must elder generation with network side between set up RRC and be connected, in this terminal, during in connection status, can send data to this network side; And, if terminal is current in connection status, and this terminal has completed the transmission of data, network side is when this terminal being detected and do not have for a long time data to send, can initiate RRC Connection Release process, to terminal, send RRC connection release message, terminal, after receiving this message, turns back to idle condition.

In LTE system, RRC Connection Release process between terminal and base station is shown in Figure 1, in terminal and base station, set up after RRC is connected, can be in the transmitted over resources data of configuration, wherein, these data are controlled (Medium Access Control, MAC) layer at medium access and are called as MAC Packet Data Unit (Packet Data Unit, PDU).The form of MAC PDU is shown in Figure 2, and a MAC PDU is comprised of MAC head (header) and MAC payload (payload).Wherein, MAC payload part further comprises again MAC Control Element (Control Element, CE), Medium Access Control (MAC) Service Data Unit (Service Data Unit, SDU) and fills (padding).Further, in MAC head, comprise again some height heads (sub-header), every height head correspondence MAC CE or MAC SDU or padding below, and order is identical.That in MAC head, adopt this MAC head correspondence such as " R/R/E/LCID/F/L " sign is MAC CE, MAC SDU or padding.Wherein, R represents to reserve, and it is 1 bit (bit) data representation for value; E represents whether also have more territory in MAC head, and it is worth uses 1bit data representation; F represents whether corresponding MAC PDU or MAC CE are greater than 128 bytes, its value 1bit data representation; L represents the length of corresponding MAC SDU or MAC CE; LCID(Logical Channel Identity) presentation logic Channel Identifier, its value 4bit data representation.For up MAC PDU, the concrete meaning of LCID value is as shown in table 1:

Table 1

As can be seen from Table 1, in LCID value, than 11001, large value is all used for representing the MAC CE of particular meaning, at present in LCID value 01011 ~ 11000 for reserving.

In LTE system, the upstream data sending for terminal, network side receives after this upstream data correct, MAC layer can feed back replys (Acknowledgement, ACK), wireless link control (Radio Link Control, RLC) layer likely feeds back the ACK that RLC is corresponding; Terminal receives after the ACK of network side feedback, confirm that this upstream data is correctly received, otherwise terminal will retransmit this upstream data.

In UMTS system, as shown in Figure 3, the network side entity in UMTS system comprises radio network controller (Radio Network Control, RNC) and base station (Node B) to the RRC Connection Release process between terminal and base station.Wherein, RNC is mainly responsible for context and the RRM of terminal, and it is the terminal of RRC signaling, and is responsible for resolving RRC signaling; Scheduling resource is mainly responsible in base station.Interface between RNC and base station is called Iub interface, between base station and RNC, by Iub interface, can carry out the transmission of signaling.The data that terminal sends are received by base station, and then are forwarded to RNC by base station.

When terminal, set up after RRC connection, in the resource of configuration, send data, these data are called MAC PDU at MAC layer.At HSPA+(High Speed Packet Access, high-speed packet access) after introducing, the form of MAC PDU is shown in Figure 4, at MAC-i hdr(MAC-i header, MAC-i head) in by some groups of logical channel identifiers (Logical Channel Identity, LCH-ID) (4bit), L(11bit) and F(1bit) form, each organize LCH-ID(4bit), L(11bit) an and F(1bit) correspondence MAC-is data cell below respectively.Wherein, the length of L corresponding data unit, F represents that follow-up is data cell or MAC head.In UMTS Frequency Division Duplexing (FDD) (Frequency Division Duplexing) system, the concrete meaning of LCH-ID is as table 2:

Table 2

In the low spreading rate of UMTS (Low Code Rate, LCR) time division duplex (Time Division Duplexing, TDD) system, the concrete meaning of LCH-ID is as shown in table 3:

LCH-ID territory	Definition
		0000	Logic channel 1
0001	Logic channel 2
		...	...
1101	Logic channel 14
		1110	CCCH identifier (SRB0)
1111	Reserved

Table 3

From Fig. 4, it can also be seen that, also may carry schedule information (Scheduling Information, SI) in MAC PDU, this SI, for buffer status, power rating, the channel status of the current terminal of informing base station, dispatches with assistant base station.For UMTS, in HSPA, terminal, when having data to send, need to be applied for resource to base station, and wherein, that the resource of application is used is SI.SI both can send by physical channel E-RUCCH, also can be carried in MAC PDU and send.The particular content of SI is as shown in table 4:

Table 4

Wherein, TEBS(Total E-DCH Buffer Staus) be total cache information, HLID(Highest priority Logical Channel ID) be highest priority logical channel ID, HLBS(Highest priority Logical channel Buffer Status) be highest priority logical channel buffer status, SNPL(Serving and Neighbor Cell Pathloss) be adjacent area and local area path loss information, UPH(terminal Power Headroom) be terminal power headrooms.

In UMTS HSPA system, the upstream data sending for terminal, after the upstream data that network side sends at correct receiving terminal, MAC layer meeting feeding back ACK, rlc layer likely feeds back the ACK that RLC is corresponding; Terminal receives after the ACK of network side feedback, determine that upstream data is correctly received, otherwise terminal will retransmit these data.

Receive after MAC PDU base station, carries out preliminary treatment, separates the field in parsing MAC head, comprises LCH-ID(4bit) and F(1bit), if wherein comprise SI, process SI base station, and utilize SI to dispatch.For the remaining data division of MAC PDU, can pass through the FP(Frame Protocol of Iub interface user face, Frame Protocol) frame passes to RNC and processes.

In sum, in LTE system and UMTS, the terminal in connection status completes after data transmission, and network side all need to send RRC connection release message for each terminal.In M2M communication; often there will be within a short period of time; great amount of terminals is concentrated and is sent data; in those terminals, complete after data transmission; network side need to send a large amount of RRC signalings for each terminal and connect to discharge the RRC of each terminal; thereby cause larger space interface signaling expense, easily cause signaling congestion.

Summary of the invention

Method, Apparatus and system that the embodiment of the present invention provides a kind of RRC of release to connect, being used for solving prior art terminal completes after data transmission, network side need to send a large amount of RRC signalings for each terminal and connect to discharge the RRC of each terminal, thereby cause larger space interface signaling expense, easily cause the problem of signaling congestion.

A kind of method that the embodiment of the present invention provides RRC of release to connect, comprising:

Terminal is being determined after the medium access control packet data cell MAC PDU of forward direction network side transmission is last MAC PDU, to described network side, send for representing the indication that all data are sent, to indicate described network side to discharge, be connected with the RRC of this terminal;

Described terminal is receiving correctly the replying after ACK message of described network side feedback, and the RRC that discharges self connects, and enters idle condition; Wherein, described ACK message is that described network side sends after last MAC PDU of correct this terminal of reception transmission.

A kind of method that the embodiment of the present invention provides RRC of release to connect, the method comprises:

After last MAC PDU that network side sends at correct receiving terminal, to described terminal feedback ACK message;

Described network side receive that described terminal sends for notifying after the indication that all data are sent of this network side, discharges and be connected with the RRC of described terminal, and definite described terminal enters idle condition.

The embodiment of the present invention provides a kind of terminal, and this terminal comprises:

Sending module, for determining after the MAC PDU of forward direction network side transmission is last MACPDU, sends for representing the indication that all data are sent to described network side, to indicate described network side to discharge, is connected with the RRC of this terminal;

Release module, for after receiving the ACK message of described network side feedback, the RRC that discharges self connects, and enters idle condition; Wherein, described ACK message is that described network side sends after last MAC PDU of the described sending module transmission of correct reception.

The embodiment of the present invention provides a kind of network equipment, is applied to LTE system, and this network equipment comprises:

Feedback module, after last the MAC PDU sending at correct receiving terminal, to described terminal feedback ACK message;

Connection Release module, for after receiving the indication being sent for all data of informing network side that described terminal sends, discharges and is connected with the RRC of described terminal, and determines that described terminal enters idle condition.

The embodiment of the present invention provides a kind of network equipment, is applied to UMTS system, and described network equipment comprises:

Base station, after last the MAC PDU sending at correct receiving terminal, to described terminal feedback ACK message; And receive that described terminal sends for notifying after the indication that all data are sent of this network equipment, described indication is sent to described RNC;

RNC, for after receiving described indication, discharges and is connected with the RRC of described terminal, and determines that described terminal enters idle condition.

The embodiment of the present invention provides a kind of communication system, and described communication system comprises:

Terminal, for determining after the MAC PDU of forward direction network side transmission is last MAC PDU, sends for representing the indication that all data are sent to described network side, to indicate described network side to discharge, is connected with the RRC of this terminal; And after receiving the ACK message of described network side feedback, the RRC that discharges self connects, and enters idle condition; Wherein, described ACK message is that described network side sends after last MAC PDU of correct this terminal of reception transmission.

Network equipment, after last the MAC PDU sending at correct receiving terminal, to described terminal feedback ACK message; And receive that described terminal sends for notifying after the indication that all data are sent of this network side, discharges and be connected with the RRC of described terminal, and definite described terminal enters idle condition.

Embodiment of the present invention terminal is being determined after the MAC PDU of forward direction network side transmission is last MAC PDU, to this network side, sends for representing the indication that all data are sent, and to indicate this network side to discharge, is connected with the RRC of this terminal; And after receiving the ACK message of this network side feedback, the RRC that discharges self connects.The embodiment of the present invention sends after all data in terminal, by the indication for representing that all data are sent sending to network side, make network side not need to send space interface signaling to terminal, also can realize the RRC connection that discharges terminal, thereby can optimize signalling, save Internet resources.

Accompanying drawing explanation

Fig. 1 is the release schematic flow sheet that in existing LTE system, terminal is connected with RRC between base station;

Fig. 2 is the form schematic diagram of MAC PDU in existing LTE system;

Fig. 3 is the release schematic flow sheet that in existing UMTS system, terminal is connected with RRC between base station;

Fig. 4 is the form schematic diagram of MAC PDU in existing UMTS system;

Fig. 5 is that embodiment of the present invention terminal discharges the method flow schematic diagram that RRC connects;

Fig. 6 is the concrete form schematic diagram of special MAC CE in embodiment of the present invention LTE system;

Fig. 7 is the concrete form schematic diagram of MAC head in embodiment of the present invention UMTS system;

Fig. 8 is that embodiment of the present invention network side discharges the method flow schematic diagram that RRC connects;

Fig. 9 is the structural representation of a kind of terminal of the embodiment of the present invention;

Figure 10 is the structural representation of a kind of network equipment in embodiment of the present invention LTE system;

Figure 11 is the structural representation of a kind of network equipment in embodiment of the present invention UMTS system;

Figure 12 is the structural representation of a kind of communication system of the embodiment of the present invention;

Figure 13 is that in the embodiment of the present invention, the first discharges the method flow diagram that RRC connects;

Figure 14 is that in the embodiment of the present invention, the second discharges the method flow diagram that RRC connects;

Figure 15 is that in the embodiment of the present invention, the third discharges the method flow diagram that RRC connects;

Figure 16 is the 4th kind of method flow diagram that discharges RRC connection in the embodiment of the present invention;

Figure 17 is the 5th kind of method flow diagram that discharges RRC connection in the embodiment of the present invention;

Figure 18 is the 6th kind of method flow diagram that discharges RRC connection in the embodiment of the present invention.

Embodiment

The embodiment of the present invention sends after all data in terminal, by the indication for representing that all data are sent sending to network side, make network side not need to send space interface signaling to terminal, also can realize the RRC connection that discharges terminal, thereby can optimize signalling, save Internet resources.

Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.

Method shown in Figure 5, a kind of RRC of release providing for the embodiment of the present invention connects, the method is applied to end side, comprises the following steps:

Step 51, terminal, determining after the MAC PDU of forward direction network side transmission is last MACPDU, send for representing the indication that all data are sent to network side, with indication network side, discharge and are connected with the RRC of this terminal;

Step 52, terminal are after receiving the ACK message of network side feedback, and the RRC that discharges self connects, and enters idle condition; Wherein, ACK message is that network side sends after last MAC PDU of correct this terminal of reception transmission.

Preferably, the ACK message of network side feedback can be the ACK message of MAC layer correspondence, can be also ACK message corresponding to rlc layer.

It should be noted that, if LTE system, the network side of the embodiment of the present invention is base station (as eNodeB); If UMTS system, the network side of the embodiment of the present invention comprises base station and RNC.

Further, in step 51, terminal can determine that the MAC PDU of current transmission is last MAC PDU in the following manner:

If mode 1 is set up after the MAC PDU of current transmission, in this terminal, for data cached buffer (buffer), be empty, this terminal determines that the MAC PDU of current transmission is last MAC PDU;

Mode 2, after receiving the high level indication of its inside (as application layer etc.), determine that the MAC PDU of current transmission be last MAC PDU, wherein, the MAC PDU that this high level indication is used for the current transmission of notification terminal is last MAC PDU.

In force, in step 51, terminal sends for representing the indication that all data are sent to network side according to following mode:

Mode A, terminal are carried the indication for representing that all data are sent in last the MAC PDU sending to network side.

Concrete, if LTE system, mode A further comprises following mode:

Mode A1, terminal adopt the special MAC CE carrying in last MAC PDU to represent this indication, wherein, in special MAC CE, comprise the identification information for representing that all data are sent.

As a kind of implementation, the concrete form of this special MAC CE can be shown in Figure 6, and wherein, C1 represents that all data are sent, and R is for reserved.

Preferably, terminal can be used reserved in the MAC head of this last MAC PDU and untapped arbitrary LCID value (as 01011 ~ 11000) to represent to carry this MAC CE in this last MAC PDU.

For example, terminal is used reserved and untapped LCID value 01011 to represent that this last MAC PDU carries the special MAC CE for representing that all data are sent, accordingly, network side is after receiving the MAC PDU of end side transmission, if comprise 01011 LCID value in the MAC head of this MAC PDU, determine in this MAC PDU and carry this special MAC CE, and while comprising C1 in special MAC CE corresponding to this LCID value, all data of determining terminal are sent, and to this terminal feedback ACK message.

Accordingly, in step 52, terminal is after receiving the ACK message of network side feedback, and the RRC that discharges self connects, and enters idle condition.

Mode A2, terminal only adopt reserved in the MAC head of last MAC PDU and this last MAC PDU of untapped arbitrary LCID value representation to carry the indication for representing that all data are sent.

For example, terminal is used reserved and untapped LCID value 01011 to represent that this last MAC PDU carries the indication for representing that all data are sent, accordingly, network side is after receiving the MAC PDU of end side transmission, if comprise 01011 LCID value in the MAC head of this MAC PDU, all data of determining terminal are sent, and to this terminal feedback ACK message.

If UMTS system, mode A further comprises following mode:

Mode A3, terminal adopt reserved in the MAC head of last MAC PDU and untapped this indication of LCH-ID value representation;

As a kind of implementation, the concrete form of this MAC head can be shown in Figure 7, and wherein, in MAC head, reserved and untapped LCH-ID value is 1111.

Accordingly, network side is after receiving last MAC PDU of this terminal transmission, if determine, in this last MAC PDU, certain MAC head comprises 1111 LCH-ID value, determines that all data of terminal are sent, and to this terminal feedback ACK message.

Mode A4, terminal adopt in last MAC PDU, carry and by the schedule information SI that terminal is set to particular value, represented this indication;

As a kind of implementation, for representing that the SI of this indication can be set to: TEBS territory is set to 0, and HLBS territory is set to the fixed value of non-zero;

Accordingly, network side is after receiving last MAC PDU that this terminal sends, if determine, the TEBS territory of the SI carrying in this last MAC PDU is 0, and the HLBS territory fixed value that is non-zero, all data of determining terminal are sent, and to this terminal feedback ACK message.

Mode B, be only applied to UMTS system, to network side, sending last MAC PDU, and after receiving the ACK message of this network side feedback, terminal sends physical layer signaling to this network side, wherein, in this physical layer signaling, carry the indication for representing that all data are sent.

Preferably, this physical layer signaling can be special E-RUCCH(Enhanced dedicated channel-Random access Uplink Control Channel, enhancement type special channel-access at random ascending control channel), wherein, the SI carrying in this special E-RUCCH is set to particular value, for identifying this indication;

Concrete, for identifying the SI of this indication, can be set to: TEBS territory is set to 0, and HLBS territory is set to the fixed value of non-zero.

Accordingly, in step 52, the RRC connection of terminal release self comprises:

Terminal is sending and is carrying for representing after the physical layer signaling of the indication that all data are sent to network side, and the RRC that discharges self connects.

In force, preferred, in terminal, to network side, send last MAC PDU and receive after the ACK message of this network side feedback, or sending after physical layer signaling to network side in terminal, the method for the present embodiment is further comprising the steps of:

Terminal starts the timer of configuration;

If do not send any data in the timing range of this timer, terminal is when this timer expiry, and the RRC that discharges self connects, and stops this timer.

Further, if sent data or received data in the timing range of this timer, terminal stops this timer.

Accordingly, network side receive that terminal sends for notifying after the indication that all data are sent of this network side, and before this network side discharges and is connected with the RRC of this terminal,

This network side starts the timer of configuration;

If do not receive any data that send from this terminal in the timing range of this timer, network side, when this timer expiry, discharges and is connected with the RRC of this terminal, and stop this timer;

Further, if receive the data that send from this terminal in the timing range of this timer, network side stops this timer.

Preferably, the timer of the embodiment of the present invention can be configured by network side, also can in agreement, stipulate this timer.

Further, if this timer is configured by network side, network side can pass through the timer that System information block (System Information Block, SIB) is notified this terminal configuration, also can pass through the timer of this terminal configuration of RRC signaling.

Method shown in Figure 8, a kind of RRC of release providing for the embodiment of the present invention connects, the method is applied to network side, comprises the following steps:

After last MAC PDU that step 81, network side send at correct receiving terminal, to this terminal feedback ACK message;

Preferably, this ACK message can be the ACK message of MAC layer correspondence, can be also ACK message corresponding to rlc layer.

Step 82, network side receive that this terminal sends for notifying after the indication that all data are sent of this network side, discharges and be connected with the RRC of this terminal, and definite this terminal enters idle condition.

In force, terminal sends for notifying the mode of this network side indication that all data are sent to comprise aforesaid way A and mode B, and wherein, the specific implementation form of mode A and mode B refers to foregoing description, repeats no more herein.

If UMTS system, in step 82, network side discharges the following three kinds of situations that comprise that are connected with the RRC of this terminal:

The first situation: terminal adopts mode A3 to send for representing the indication that all data are sent, and network side discharges and is connected specifically and comprises with the RRC of this terminal:

Base station, after receiving this indication, sends to RNC by the MAC head that carries this indication by current FP frame; And

RNC, after getting this indication, discharges and is connected with the RRC of this terminal.

The second situation: terminal adopts mode A4 to send for representing the indication that all data are sent, and network side discharges and is connected specifically and comprises with the RRC of this terminal:

When the SI that carry in determining last the MAC PDU receiving base station represents this indication (being that base station determines that this SI is set to particular value), by this indication of residue field notice RNC in current FP frame; And

The third situation: terminal adopts mode B to send for representing the indication that all data are sent, and network side discharges and is connected specifically and comprises with the RRC of this terminal:

After this indication that carry in receiving physics signaling base station, to RNC, send this indication; And

RNC, after receiving this indication, discharges and is connected with the RRC of this terminal.

In force, base station sends the indication for representing that all data of terminal are sent by lub interface signaling to RNC.

Preferably, at network side, receive that terminal sends for representing after indication that all data are sent, and before this network side discharges and is connected with the RRC of this terminal, the method for the present embodiment is further comprising the steps of:

Network side starts the timer of configuration;

Wherein, if this timer is configured by network side, network side can be notified by System information block the timer of this terminal configuration, also can pass through the timer of this terminal configuration of RRC signaling.

Further, if UMTS system, the timer that network side starts configuration specifically comprises:

Base station receive that terminal sends for representing that after indication that all data are sent, notice RNC starts the timer of configuration;

If RNC does not detect the data that this terminal sends in the timing range of this timer, this RNC, when this timer expiry, discharges and is connected with the RRC of this terminal, and stop this timer;

Further, if RNC detects the data that this terminal sends in the timing range of this timer, RNC stops this timer.

Based on same inventive concept, a kind of terminal is also provided in the embodiment of the present invention, because the principle that this terminal is dealt with problems is similar with the method that a kind of RRC of release shown in Fig. 5 is connected, so the enforcement of this terminal can, referring to the enforcement of method, repeat part and repeat no more.

Terminal shown in Figure 9, the embodiment of the present invention provides, comprising:

Sending module 91, for determining after the MAC PDU of forward direction network side transmission is last MACPDU, sends for representing the indication that all data are sent to network side, with indication network side, discharges and is connected with the RRC of this terminal;

Release module 92, for after receiving the ACK message of network side feedback, the RRC that discharges self connects, and enters idle condition; Wherein, ACK message is that network side sends after last MAC PDU of correct reception sending module 91 transmissions.

Further, sending module 91 also for:

If after setting up the MAC PDU of current transmission, in this terminal, for data cached buffer, be empty, determine that the MAC PDU of current transmission is last MAC PDU; Or

After the high level indication that receives this terminal inner, determine that the MAC PDU of current transmission is last MAC PDU, wherein, high-rise indication is last MAC PDU for notifying the MAC PDU of the current transmission of this terminal.

As a kind of implementation, sending module 91 specifically for:

In last the MAC PDU sending to network side, carry this indication.

Further, sending module 91 specifically for:

If LTE system, adopts the special MAC CE carrying in last MAC PDU to represent this indication, and use in reserved in the MAC head of last MAC PDU and untapped last MAC PDU of arbitrary LCID value representation and carry special MAC CE; Wherein, in special MAC CE, comprise the identification information for representing that all data are sent; Or

Use in reserved in the MAC head of last MAC PDU and this last MAC PDU of untapped arbitrary LCID value representation and carry the indication for representing that all data are sent.

Further, sending module 91 specifically for:

If UMTS system, adopts reserved in the MAC head of last MAC PDU and untapped this indication of LCH-ID value representation; Or adopt SI that carry and that be set to particular value in last MAC PDU to represent this indication.

As another kind of implementation, sending module 91 also for:

If UMTS system, is sending last MAC PDU to network side, and after receiving the ACK message of network side feedback, to network side, send physical layer signaling, wherein in physical layer signaling, carry this indication.

Further, physical layer signaling is special E-RUCCH, and wherein, the SI carrying in this special E-RUCCH is set to particular value, for identifying this indication.

As a kind of way of realization, for representing that the SI that all data are sent can be set to: total cache information TEBS territory is set to 0, and highest priority logical channel buffer status HLBS territory is set to the fixed value of non-zero.

Further, release module 92 specifically for:

To network side, sending after physical layer signaling, the RRC that discharges self connects.

Preferably, sending module 91 also for:

To network side, send last MAC PDU and receiving after the ACK message of network side feedback, or sending after physical layer signaling to network side, starting the timer of configuration;

Release module 92 also for: if do not send any data in the timing range of timer, when timer expiry, the RRC that discharges self connects, and stops timer.

Further, release module 92 also for:

If sent data or received data in the timing range of timer, having stopped timer.

A kind of network equipment connecting for discharging RRC shown in Figure 10, the embodiment of the present invention provides, is applied to LTE system, comprising:

Feedback module 101, after last the MAC PDU sending at correct receiving terminal, to terminal feedback ACK message;

Connection Release module 102, for after receiving the indication being sent for all data of informing network side that terminal sends, discharges and be connected with the RRC of terminal, and definite terminal enters idle condition.

Wherein, the indication being sent for all data of informing network side that terminal sends can adopt aforesaid way A1, mode A2 and mode B, specifically referring to foregoing description, repeats no more herein.

Further, ACK message is ACK message or the ACK message corresponding to rlc layer of MAC layer correspondence.

As a kind of implementation, Connection Release module 102 also for:

Before release is connected with the RRC of terminal, start the timer of configuration; And if feedback module 101 any data of not receiving self terminal to send in the timing range of timer, when timer expiry, discharge and be connected with the RRC of terminal, and stop timer.

Further, Connection Release module 102 also for:

If the data that feedback module 101 receives self terminal to send in the timing range of timer, stop timer.

In the present embodiment, network equipment is base station.

Network equipment shown in Figure 11, the embodiment of the present invention provides, is applied to UMTS system, and this network equipment comprises:

Base station 111, after last the MAC PDU sending at correct receiving terminal, to terminal feedback ACK message; And receive that terminal sends for notifying after the indication that all data are sent of this network equipment, this indication is sent to RNC112;

RNC112, for after receiving indication, discharges and be connected with the RRC of terminal, and definite terminal enters idle condition.

Wherein, terminal send for notifying the indication that all data are sent of this network equipment can adopt aforesaid way A3, mode A4 and mode B, specifically referring to foregoing description, repeat no more herein.

As a kind of implementation, if terminal adopts reserved in last MAC PDU and untapped this indication of LCH-ID value representation,

Base station 111 specifically for: after receiving this indication, the MAC head that carries this indication is sent to RNC112 by current FP frame.

As another kind of implementation, if terminal adopts SI that carry and that be set to particular value in last MAC PDU to represent this indication,

Base station 111 specifically for: when definite SI represents this indication, this indication of residue field notice RNC112 by current FP frame.

As another implementation, if carry this indication in the physical layer signaling that terminal sends to network side,

Base station 111 specifically for: after this indication of carrying, to RNC112, send this indication in receiving physics signaling.

Preferably, base station 111 sends this indication by lub interface signaling to RNC112.

Further, base station 111 also for: after receiving this indication, notice RNC starts the timer of configuration;

RNC112 also for: after receiving the notice of base station 111, start the timer of configuration; And the data that terminal sends in the timing range of timer, do not detected, and when timer expiry, discharge and be connected with the RRC of terminal, and stop timer.

Further, RNC112 also for: while the data that terminal sends being detected in the timing range of timer, stop timer.

Based on same inventive concept, a kind of communication system is also provided in the embodiment of the present invention, because the principle that this system is dealt with problems is similar with the method that a kind of RRC of release shown in Fig. 8 is connected with Fig. 5, the enforcement of being therefore somebody's turn to do can, referring to the enforcement of method, repeat part and repeat no more.

System shown in Figure 12, a kind of RRC of release that the embodiment of the present invention provides connects, comprising:

Terminal 121, for determining after the MAC PDU of forward direction network side transmission is last MACPDU, sends for representing the indication that all data are sent to network side, with indication network side, discharges and is connected with the RRC of this terminal; And after receiving the ACK message of network side feedback, the RRC that discharges self connects, and enters idle condition; Wherein, ACK message is that network side sends after last MAC PDU of correct this terminal of reception transmission.

Network equipment 122, after last the MAC PDU sending at correct receiving terminal, to terminal feedback ACK message; And receive that terminal sends for notifying after the indication that all data are sent of this network side, discharges and be connected with the RRC of terminal, and definite terminal enters idle condition.

Further, if LTE system, network equipment 122 is base station; If UMTS system, network equipment 122 comprises base station and RNC.

Below in conjunction with the embodiment enumerating, the method that the present invention is discharged to RRC connection describes.

Embodiment mono-, shown in Figure 13, the present embodiment is applied to LTE system, in the present embodiment, terminal adopts mode A1 and mode A2 to send for representing the indication that all data are sent, and in the present embodiment, does not use timer, and the method that the present embodiment discharges RRC connection comprises the following steps:

Between step 131, terminal and base station (eNB), set up RRC and be connected, and send data to this eNB;

Wherein, set up the process of RRC connection and the process of data transmission referring to 3GPP 36.331 agreements and 3GPP 36.321 agreements.

Step 132, terminal, when sending last MAC PDU to base station, are carried the indication for representing that all data are sent, to notify all data of eNB to be sent;

Wherein, this indication can be a kind of special MAC CE, and its form is shown in Figure 6, and wherein, C1 represents that all data of this terminal are sent, and R is for reserved;

Further, in the end in the MAC head of a MAC PDU, use at present still this MAC PDU of any one value representation in untapped LCID value (01011 ~ 11000) to carry this MAC CE.

Step 133, eNB are after receiving this indication, and to this terminal feedback ACK message, and release is connected with the RRC of this terminal;

Now, eNB thinks that this terminal is in idle condition;

Step 134, terminal are after receiving the ACK message of eNB feedback, and the RRC that discharges self connects, to enter idle condition.

Embodiment bis-, shown in Figure 14, the present embodiment is applied to LTE system, in the present embodiment, terminal adopts mode A1 and mode A2 to send for representing the indication that all data are sent, and in the present embodiment, uses timer, and the method that the present embodiment discharges RRC connection comprises the following steps:

Step 141, eNB configure timer by System information block, and terminal, after receiving this System information block, is preserved the timer of configuration;

Step 142, with the step 131 in embodiment mono-;

Step 143, with the step 132 in embodiment mono-;

Step 144, eNB, after receiving this indication, to this terminal feedback ACK message, and start timer;

Further, if eNB in the timing range of this timer, does not receive the data that this terminal sends,, after this timer expiry, discharge and be connected with the RRC of this terminal, now, this eNB thinks that this terminal has entered idle condition; Otherwise, stop this timer.

Step 145, terminal, when receiving the ACK message of eNB feedback, start timer;

Further, if this terminal, in the timing range of timer, does not send any data,, after timer expiry, the RRC that discharges self connects, and enters idle condition; Otherwise terminal has sent any data in the timing range of timer, stops this timer.

Embodiment tri-, shown in Figure 15, the present embodiment is applied to UMTS, in the present embodiment, terminal adopts mode A3 and mode A4 to send for representing the indication that all data are sent, and in the present embodiment, does not use timer, and the method that the present embodiment discharges RRC connection comprises the following steps:

Between step 151, terminal and base station, RNC, set up RRC and be connected, and send data to this base station;

Accordingly, base station, after receiving the data of terminal transmission, sends to RNC by these data;

RNC, after receiving the data of base station transmission, carries out respective handling.

Wherein, set up the process of RRC connection and the process of data transmission referring to 3GPP 25.331 agreements, 3GPP 25.321 agreements and 3GPP 25.433 agreements.

Step 152, terminal, when sending last MAC PDU, are carried the indication for representing that all data are sent, and with all data of informing network side, are sent;

As a kind of implementation, this indication can represent by reserved LCH-ID in MAC PDU head, and concrete expression mode is shown in Figure 7, and wherein, the value of LCH-ID is used current reserved 1111.

As another kind of implementation, this indication can be set to particular value and represent by the SI in MAC PDU; For example, the TEBS territory in SI is set to 0, and HLBS territory is set to a fixing nonzero value.

Step 153, base station receive after this indication, to terminal feedback ACK message, and the MAC head that all data of this terminal of sign are sent, by current FP frame, send to RNC;

Step 154, RNC resolve the data in FP frame, after getting this indication, discharge and are connected with the RRC of this terminal, and think that this terminal enters idle condition;

Preferably, if the indication that receive base station adopts SI to represent, resolve this SI, and the spare field in FP frame is set to the fixedly implication of 1bit, to notify the data of this terminal of RNC to be sent;

Accordingly, RNC resolves FP frame, identifies after this indication, discharges and is connected with the RRC of this terminal, and think that this terminal enters idle condition.

Step 155, terminal are when receiving the ACK message of base station feedback, and the RRC that discharges self connects, and enters idle condition.

It should be noted that, in the present embodiment, also can first perform step 155, then perform step 154.

Embodiment tetra-, shown in Figure 16, the present embodiment is applied to UMTS, in the present embodiment, terminal adopts mode A3 and mode A4 to send for representing the indication that all data are sent, and in the present embodiment, uses timer, and the method that the present embodiment discharges RRC connection comprises the following steps:

Step 161, RNC configure timer by System information block;

Accordingly, terminal, after receiving this System information block, is preserved this timer;

Step 162, with the step 151 in embodiment tri-;

Step 163, with the step 152 in embodiment tri-;

Step 164, base station receive after this indication, feeding back ACK message, and this indication is notified to RNC;

Step 165, RNC, after receiving the indication of base station transmission, start the timer of configuration;

Further, if in the timing range of timer, do not receive the data that this terminal sends,, after timer expiry, discharge and be connected with the RRC of this terminal, now, network equipment (RNC and base station) thinks that this terminal enters idle state; Otherwise, stop this timer.

Step 166, terminal, after receiving the ACK message of base station feedback, start the timer of preserving;

Further, if in the timing range of timer, this terminal does not send or receives data, and terminal is after timer expiry, and the RRC that discharges self connects, and enters idle state; Otherwise, stop this timer.

It should be noted that, in the present embodiment, also can first perform step 166, then perform step 165.

Embodiment five, shown in Figure 17, the present embodiment is applied to UMTS, in the present embodiment, terminal adopts mode B to send for representing the indication that all data are sent, and in the present embodiment, does not use timer, and the method that the present embodiment discharges RRC connection comprises the following steps:

Step 171, with the step 151 in embodiment tri-;

Step 172, terminal are sending last MAC PDU to base station;

After last MAC PDU that step 173, base station send at correct receiving terminal, to this terminal feedback ACK message;

Step 174, terminal, after receiving the ACK message that base station sends, send special E-RUCCH, wherein, in this special E-RUCCH, carry the indication for representing that all data are sent;

As a kind of implementation, in this special E-RUCCH, carry the SI that is set to particular value, concrete, the TEBS territory of SI is set to 0, and its HLBS territory is set to the fixed value of a non-zero;

Step 175, terminal are after sending this special E-RUCCH, and the RRC that discharges self connects, and enters idle state;

Step 176, base station, after receiving this indication that terminal sends, are notified this indication to RNC;

Wherein, base station can send this indication to RNC by Iub interface signaling.

Step 177, RNC, after receiving this indication that base station sends, discharge and are connected with the RRC of this terminal, think that this terminal enters idle state.

It should be noted that, in the present embodiment, can first perform step 176 and step 177, then perform step 175.

Embodiment six, shown in Figure 18, the present embodiment is applied to UMTS, in the present embodiment, terminal adopts mode B to send for representing the indication that all data are sent, and in the present embodiment, uses timer, and the method that the present embodiment discharges RRC connection comprises the following steps:

Step 181, RNC configure timer by System information block;

Step 182, with the step 171 in embodiment five;

Step 183, with the step 172 in embodiment five;

Step 184, with the step 173 in embodiment five;

Step 185, with the step 174 in embodiment five;

Step 186, terminal, after sending this special E-RUCCH, start timer;

Further, if in the timing range of timer, this terminal does not send or receives data, and this terminal is after timer expiry, and the RRC that discharges self connects, and enters idle state; Otherwise, stop this timer.

Step 187, base station, after receiving this indication that terminal sends, are notified this indication to RNC;

Step 188, RNC, after receiving this indication that base station sends, start timer;

Further, if do not receive the data that this terminal sends within the scope of timer, RNC is at this timer expiry, and rear release is connected with the RRC of this terminal, thinks that terminal enters idle state; Otherwise RNC stops this timer.

It should be noted that, in the present embodiment, also can first perform step 187 and step 188, then perform step 186.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims

1. discharge the method that RRC connects, it is characterized in that, the method comprises:

2. the method for claim 1, is characterized in that, described terminal determines that the MAC PDU of current transmission is last MAC PDU in the following manner:

If set up after the MAC PDU of described current transmission, in described terminal, for data cached buffer, be empty, described terminal determines that the MAC PDU of current transmission is last MAC PDU; Or

Described terminal, after the high level indication that receives its inside, determines that the MAC PDU of current transmission is last MAC PDU, and wherein, described high-rise indication is last MAC PDU for notifying the MACPDU of the current transmission of described terminal.

3. the method for claim 1, is characterized in that, described terminal sends for representing the indication that all data are sent to described network side, comprising:

Described terminal is carried described indication in last the MAC PDU sending to described network side.

4. method as claimed in claim 3, is characterized in that, if LTE system,

Described terminal adopts the special MAC CE carrying in described last MAC PDU to represent described indication, and uses described in reserved in the MAC head of described last MAC PDU and untapped arbitrary LCID value representation and carry described special MAC CE in last MAC PDU; Wherein, in described special MAC CE, comprise the identification information for representing that all data are sent; Or

Described terminal is used described in reserved in the MAC head of described last MAC PDU and untapped arbitrary LCID value representation and is carried described indication in last MAC PDU.

5. method as claimed in claim 3, is characterized in that, if UMTS system,

Described terminal adopts described in reserved in the MAC head of described last MAC PDU and untapped LCH-ID value representation and indicates; Or

Described terminal adopt in described last MAC PDU, carry and by the schedule information SI that described terminal is set to particular value, represented described indication.

6. the method for claim 1, is characterized in that, if UMTS system, described terminal sends described indication to described network side, comprising:

To described network side, sending described last MAC PDU, and after receiving the described ACK message of described network side feedback, described terminal sends physical layer signaling to described network side, carries described indication in wherein said physical layer signaling.

7. method as claimed in claim 6, it is characterized in that, described physical layer signaling is special enhancement type special channel-access at random ascending control channel E-RUCCH, wherein, the SI carrying in described special E-RUCCH is set to particular value, for identifying described indication.

8. the method as described in claim 5 or 7, is characterized in that, described SI is set to: total cache information TEBS territory is set to 0, and highest priority logical channel buffer status HLBS territory is set to the fixed value of non-zero.

9. method as claimed in claim 6, is characterized in that, the RRC that described terminal discharges self connects, and comprising:

Described terminal is sending after described physical layer signaling to described network side, and the RRC that discharges self connects.

10. the method as described in claim 3 or 6, it is characterized in that, in described terminal, to described network side, send last MAC PDU and receive after the ACK message of described network side feedback, or sending after physical layer signaling to described network side in described terminal, described method also comprises:

Described terminal starts the timer of configuration;

If described terminal does not send any data in the timing range of described timer, described terminal is when described timer expiry, and the RRC that discharges self connects, and stops described timer.

11. methods as claimed in claim 10, is characterized in that, described method also comprises:

If described terminal has sent data or received data in the timing range of described timer, described terminal stops described timer.

12. methods as claimed in claim 10, is characterized in that, described timer is configured by described network side, or in agreement, stipulate described timer.

13. methods as claimed in claim 12, is characterized in that, described network side is notified the timer of described terminal configuration by System information block, or by the timer of terminal configuration described in RRC signaling.

14. the method for claim 1, is characterized in that, described ACK message is ACK message or the ACK message corresponding to rlc layer of MAC layer correspondence.

15. 1 kinds discharge the method that RRC connects, and it is characterized in that, the method comprises:

Described network side get that described terminal sends for notifying after the indication that all data are sent of this network side, discharges and be connected with the RRC of described terminal, and definite described terminal enters idle condition.

16. methods as claimed in claim 15, is characterized in that, described ACK message is ACK message or the ACK message corresponding to rlc layer of MAC layer correspondence.

17. methods as claimed in claim 15, is characterized in that, if UMTS system, and described terminal adopts described in reserved in described last MAC PDU and untapped LCH-ID value representation and indicates, and described network side discharges and is connected and comprises with the RRC of described terminal:

Base station, after receiving described indication, sends to RNC by the MAC head that carries described indication by current Frame Protocol FP frame;

Described RNC, after getting described indication, discharges and is connected with the RRC of described terminal.

18. methods as claimed in claim 15, it is characterized in that, if UMTS system, and described terminal adopt in described last MAC PDU, carry and by the SI that described terminal is set to particular value, represented described indication, described network side discharges and is connected with the RRC of described terminal, comprising:

, when definite described SI represents described indication, indicate described in the residue field notice RNC in current FP frame base station;

19. methods as claimed in claim 15, is characterized in that, if UMTS system, and carry described indication in the physical layer signaling that sends to described network side of described terminal, described network side discharges and is connected with the RRC of described terminal, comprising:

After the described indication that carry in receiving described physics signaling base station, to RNC, send described indication;

Described RNC, after receiving described indication, discharges and is connected with the RRC of described terminal.

20. methods as described in as arbitrary in claim 17 ~ 19, is characterized in that, described base station sends described indication by lub interface signaling to described RNC.

21. methods as claimed in claim 15, is characterized in that, receive after described indication, and before described network side release is connected with the RRC of described terminal, described method also comprise at described network side:

Described network side starts the timer of configuration;

If do not receive any data that send from described terminal in the timing range of described timer, described network side, when described timer expiry, discharges and is connected with the RRC of described terminal, and stop described timer.

22. methods as claimed in claim 21, is characterized in that, described method also comprises:

If receive the data that send from described terminal in the timing range of described timer, described network side stops described timer.

23. methods as claimed in claim 21, is characterized in that, if UMTS system, described network side starts the timer of configuration, comprising:

Base station is after receiving described indication, and notice RNC starts the timer of configuration;

Described RNC, after receiving this notice, starts the timer of configuration; And if the data that described terminal sends in the timing range of described timer, do not detected, described RNC, when described timer expiry, discharges and is connected with the RRC of described terminal, and stop described timer.

24. methods as claimed in claim 23, is characterized in that, described method also comprises:

If the data that described terminal sends detected in the timing range of described timer, described RNC stops described timer.

25. methods as described in as arbitrary in claim 21 ~ 24, is characterized in that, described timer is configured by described network side, or in agreement, stipulates described timer.

26. methods as claimed in claim 25, is characterized in that, described method also comprises:

Described network side is notified the timer of described terminal configuration by System information block, or by the timer of terminal configuration described in RRC signaling.

27. 1 kinds of terminals, is characterized in that, this terminal comprises:

28. terminals as claimed in claim 27, is characterized in that, described sending module also for:

After setting up the MAC PDU of described current transmission, if be empty for data cached buffer in this terminal, determine that the MAC PDU of current transmission is last MAC PDU; Or

After the high level indication that receives this terminal inner, determine that the MAC PDU of current transmission is last MAC PDU, wherein, described high-rise indication is last MAC PDU for notifying the MAC PDU of the current transmission of this terminal.

29. terminals as claimed in claim 27, is characterized in that, described sending module specifically for:

In last the MAC PDU sending to described network side, carry described indication.

30. terminals as claimed in claim 29, is characterized in that, described sending module specifically for:

If LTE system, adopt the special MAC CE carrying in described last MAC PDU to represent described indication, and use described in reserved in the MAC head of described last MAC PDU and untapped arbitrary LCID value representation and carry described special MAC CE in last MAC PDU; Wherein, in described special MAC CE, comprise the identification information for representing that all data are sent; Or

Use described in reserved in the MAC head of described last MAC PDU and untapped arbitrary LCID value representation and carry described indication in last MAC PDU.

31. terminals as claimed in claim 29, is characterized in that, described sending module specifically for:

If UMTS system, adopts described in reserved in the MAC head of described last MAC PDU and untapped LCH-ID value representation and indicates; Or adopt SI that carry and that be set to particular value in described last MAC PDU to represent described indication.

32. terminals as claimed in claim 27, is characterized in that, described sending module also for:

If UMTS system, is sending described last MAC PDU, and after receiving the described ACK message of described network side feedback, sending physical layer signaling to described network side to described network side, in wherein said physical layer signaling, carry described indication.

33. terminals as claimed in claim 32, is characterized in that, described physical layer signaling is special E-RUCCH, and wherein, the SI carrying in described special E-RUCCH is set to particular value, for identifying described indication.

34. terminals as described in claim 31 or 33, is characterized in that, described SI is set to: total cache information TEBS territory is set to 0, and highest priority logical channel buffer status HLBS territory is set to the fixed value of non-zero.

35. terminals as claimed in claim 32, is characterized in that, described release module specifically for:

To described network side, sending after described physical layer signaling, the RRC that discharges self connects.

36. terminals as described in claim 29 or 32, is characterized in that, described sending module also for:

To described network side, send last MAC PDU and receiving after the ACK message of described network side feedback, or sending after physical layer signaling to described network side, starting the timer of configuration;

Described release module also for: if do not send any data in the timing range of described timer, when described timer expiry, the RRC that discharges self connects, and stops described timer.

37. terminals as claimed in claim 36, is characterized in that, described release module also for:

If sent data or received data in the timing range of described timer, having stopped described timer.

38. 1 kinds of network equipments, are applied to LTE system, it is characterized in that, this network equipment comprises:

39. network equipments as claimed in claim 38, is characterized in that, described ACK message is ACK message or the ACK message corresponding to rlc layer of MAC layer correspondence.

40. network equipments as claimed in claim 38, is characterized in that, described Connection Release module also for:

Before release is connected with the RRC of described terminal, start the timer of configuration; And if described feedback module do not receive any data that send from described terminal in the timing range of described timer, when described timer expiry, discharge and be connected with the RRC of described terminal, and stop described timer.

41. network equipments as claimed in claim 40, is characterized in that, described Connection Release module also for:

If described feedback module is received the data that send from described terminal in the timing range of described timer, stop described timer.

42. network equipments as claimed in claim 38, is characterized in that, described network equipment is base station.

43. 1 kinds of network equipments, are applied to UMTS system, it is characterized in that, described network equipment comprises:

44. network equipments as claimed in claim 43, is characterized in that, if adopting described in reserved in described last MAC PDU and untapped LCH-ID value representation, described terminal indicates,

Described base station specifically for: after receiving described indication, the MAC head that carries described indication is sent to RNC by current FP frame.

45. network equipments as claimed in claim 43, is characterized in that, if described terminal adopt in described last MAC PDU, carry and by the SI that described terminal is set to particular value, represented described indication,

Described base station specifically for: when definite described SI represents described indication, indicate described in the residue field notice RNC by current FP frame.

46. network equipments as claimed in claim 43, is characterized in that, if carry described indication in the physical layer signaling that described terminal sends to described network side,

Described base station specifically for: after the described indication of carrying, to RNC, send described indication in receiving described physics signaling.

47. network equipments as described in as arbitrary in claim 43 ~ 46, is characterized in that, described base station sends described indication by lub interface signaling to described RNC.

48. network equipments as claimed in claim 43, is characterized in that, described base station also for: after receiving described indication, notice RNC starts the timer of configuration;

Described RNC also for: after receiving the notice of described base station, start the timer of configuration; And the data that described terminal sends in the timing range of described timer, do not detected, and when described timer expiry, discharge and be connected with the RRC of described terminal, and stop described timer.

49. network equipments as claimed in claim 48, is characterized in that, described RNC also for: while the data that described terminal sends being detected in the timing range of described timer, stop described timer.

50. 1 kinds of communication systems, is characterized in that, described communication system comprises:

Terminal, for determining after the MAC PDU of forward direction network side transmission is last MAC PDU, sends for representing the indication that all data are sent to described network side, to indicate described network side to discharge, is connected with the RRC of this terminal; And after receiving the ACK message of described network side feedback, the RRC that discharges self connects, and enters idle condition; Wherein, described ACK message is that described network side sends after last MAC PDU of correct this terminal of reception transmission;

51. systems as claimed in claim 50, is characterized in that, if LTE system, described network equipment is base station; If UMTS system, described network equipment comprises base station and RNC.