CN102204338A - Method and apparatus for rrc connection reestablishment in wireless communication system - Google Patents
Method and apparatus for rrc connection reestablishment in wireless communication system Download PDFInfo
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
A method of reestablishing a RRC connection by the mobile terminal in a RRC_CONNECTED state is disclosed, where the method includes selecting a target cell based on cell quality values measured by using signals from a candidate cell set, determining a cell type of the target cell, and transmitting a RRC connection reestablishment request message to the target cell, when the target cell is a first type cell providing with both a emergency service and a normal service.
Description
Technical field
The present invention relates to a kind of wireless communication system, more specifically, relate to a kind of method of in RRC connection reconstruction process, selecting the sub-district.
Background technology
The basic purpose of selecting the sub-district is registered user's equipment (UE) and receive service from the sub-district in network.If signal strength signal intensity between UE and the sub-district and quality are because of the variation that moves of UE, then UE reselects another sub-district to keep data transmission quality.
Above-mentioned cell selecting is handled and for example is divided into following two kinds.
First kind is the initial cell selection, and promptly UE does not have the information about wireless channel.Therefore, UE can retrieve to select the sub-district, the wireless channel corresponding district best with signal quality in the wireless channel of selecting then to be retrieved each wireless channel.
Second kind is the stored information cell selecting, and promptly UE uses stored information.Stored information has been stored among the UE or by the sub-district and has broadcasted.At this moment, maybe can immediately obtain information about wireless channel by broadcast message because UE has had about the information of wireless channel, therefore with respect to first kind of situation, UE can carry out cell selecting quickly and handle.
[formula 1]
Srxlev＝Qrxlevmeas-(Qrxlevmin+Qrxlevminoffset)-Pcompensation＞0
Use the parameter of formula 1 as shown in table 1.
[table 1]
UE can pass through system information (SI) and receive the parameter shown in the table 2, adopts the cell selecting standard shown in the formula 1 to carry out cell selecting then and handles.
SI comprises the essential information that network insertion is required.Therefore, conventional UE should receive SI and should have up-to-date SI before inserting the sub-district.Because UE must know SI in the sub-district, so the sub-district can periodic broadcasting SI.
SI is divided into Master Information Block (MIB), Scheduling Block (SB), system information block (SIB) etc.MIB provides the physical message of sub-district, for example bandwidth to UE.For example, a SIB only comprises neighbor cell list (NCL), and other SIB only comprises the information of the uplink radio channel that UE uses.In addition, SB is to UE notice and the relevant information (for example sending the cycle) of transmission SIB.
If signal strength signal intensity between UE and the sub-district and quality are because of the variation that moves of UE, then UE reselects another sub-district to keep data transmission quality.
On the other hand, UE by the cell selecting processing selecting after the specific cell, signal strength signal intensity between UE and the sub-district and quality are because of the variation that moves of UE.If the cell quality variation, then UE selects to provide to UE other sub-district of the signal of better quality.This process is called cell reselection process.
With regard to radio signal quality, the basic purpose of cell reselection process is to select to provide to UE the sub-district of signal the best in quality.Except the angle of radio signal quality, network can determine the priority of frequency and inform this priority of UE.UE can have precedence over the cell selecting standard and consider this priority.
Usually, the method for re-selecting cell is according to the parameter relevant with wireless access technology (RAT) with participate in the frequency characteristic of sub-district of sub-district gravity treatment and different.Conventional method is for example pressed table 2 and is divided.
[table 2]
| Frequently sub-district gravity treatment in | UE gravity treatment and Serving cell have the sub-district of same centre frequency and RAT |
| The inter-frequency cell gravity treatment | The sub-district that UE gravity treatment and Serving cell have identical RAT and different center frequency |
| Sub-district gravity treatment between RAT | The sub-district of the RAT that UE gravity treatment use is different with the RAT that Serving cell uses |
Routine operation when Fig. 1 shows the UE energising under idle pulley.
With reference to Fig. 1, when UE switched on, the UE automatic or manual selected to wish therefrom to receive the public land mobile network (PLMN) of service and the RAT (S110) that is used to communicate by letter.PLMN and RAT information can be selected by user or the PLMN of UE.Alternatively, can use PLMN and the RAT information that is stored in the USIM (USIM).
At this moment, UE can measure the wireless signal as reference signal or pilot signal (S130) that receives from the sub-district, and the characteristic or the signal to interference and noise ratio of the use physical signalling relevant with signal strength signal intensity come the calculation plot mass value.
Then, UE carries out cell selecting and handles, and selects to have the sub-district (S120) of the highest sub-district mass value in greater than the sub-district of fiducial value in the cell quality value.Fiducial value is the value that defines in system for the quality that guarantees the physical signalling in the data transmit-receive.Therefore, fiducial value can change according to the RAT that uses, and is applied to formula 1 in the LTE system.
Then, UE receives the system information (SI) that is regularly sent by the base station.UE registers its information (for example IMSI International Mobile Subscriber Identity (IMSI)) to receive service (for example paging) (S150) from network on network.UE is not its information of whenever registering in cell selecting.On the contrary, UE only just registers its information when needed on network.For example, when the network information that receives from SI (for example tracing area sign (TAI)) was different from the network information that UE knows, UE registered its information (S140 and S170) on network.
If the cell quality value of Serving cell is lower than neighbor cell, then UE can provide sub-district of gravity treatment in other sub-district of the better characteristics of signals of quality in the sub-district with respect to the base station of its access.Handle for the cell selecting of distinguishing this process and step S120, this process (S160) is called cell reselection process.In cell reselection process, time restriction condition (for example, cell selecting timer) is set to prevent that UE is according to characteristics of signals re-selecting cell continually.
On the other hand, if conventional cell selecting is handled the RRC connection reconstruction process that directly applies to, UE can send RRC connection reconstruction request message to selected sub-district all the time, regardless of the type of selected sub-district.That is to say that although selected sub-district can not provide normal service to UE, UE also can send RRC connection reconstruction request message to selected sub-district.This sub-district can send RRC connection reconstruction refuse information to UE as a result.Will produce UE this moment and have to carry out the problem that all processes of service are provided to UE by this sub-district in order to keep service.
In addition, in conventional cell selecting was handled, UE considered the sub-district of all wireless access technologys (RAT) of its support of employing.Therefore, if conventional cell selecting is handled the RRC connection reconstruction process that directly applies to, UE can select not adopt E-UTRA but the sub-district of adopting other RAT.Yet owing to use the sub-district of other RAT not have environment and the configuration of UE, so UE thinks RRC connection reconstruction procedure failure.At this moment, although have sufficient time to retrieve the sub-district of adopting E-UTRA, also can produce UE transfers RRC_IDLE (RRC_ free time) state to from the disengaging of RRC_CONNECTED (RRC_ connection) state problem.
In addition, if conventional cell selecting processing is directly applied to RRC connection reconstruction process, then can not guarantee the continuity that RRC connects.
Summary of the invention
Technical problem
An object of the present invention is to provide the method that a kind of reconstruction RRC that can improve the success rate of RRC connection reconstruction process connects and select the sub-district.
Another object of the present invention provides the method that a kind of reconstruction RRC that can reduce the time out that produces in the RRC connection reconstruction process connects and select the sub-district.
Technical scheme
Purpose of the present invention can realize by the following method: a kind ofly rebuild the method for Radio Resource control connection by multi-radio access technology (RAT) portable terminal that is in Radio Resource control (RRC) connection status with the sub-district that utilizes the specific wireless access technology, this method may further comprise the steps: use one or more sub-district of the wireless access technology except that described specific wireless access technology to set up candidate cell set by getting rid of from candidate cell set; Based on each sub-district corresponding district mass value select target sub-district from described candidate cell set that is included in the described candidate cell set; And to described Target cell transmission radio resource control connection reestablishment request message.
Preferably, the step of setting up described candidate cell set comprises: one or more receiver of closing the wireless access technology except that described specific wireless access technology.
This method can be further comprising the steps of: started the cell selecting timer set up the step of described candidate cell set in execution before; And if before described cell selecting timer expires, do not select described Target cell, then break away from and transfer the RRC_IDLE state to from described RRC_CONNECTED state.
This method can be further comprising the steps of: after carrying out the step that sends described radio resource control connection reestablishment request message, receive radio resource control connection reestablishment message from described Target cell; And send radio resource control connection reestablishment to described Target cell and finish message.
Another aspect of the present invention provides a kind of and has controlled the method that the multi-radio access technology portable terminal of (RRC) connection status is rebuild the Radio Resource control connection by being in Radio Resource with the sub-district that utilizes specific wireless access technology (RAT), and this method may further comprise the steps: use and measure the cell quality value from the signal of candidate cell set; Set up the candidate cell mass value by the cell quality value of from the cell quality value of measuring, getting rid of one or more sub-district of using the wireless access technology except that described specific wireless access technology; Come the select target sub-district based on described candidate cell mass value; And to described Target cell transmission radio resource control connection reestablishment request message.
This method can be further comprising the steps of: started the cell selecting timer before carrying out the step of measuring the cell quality value; And if before described cell selecting timer expires, do not select described Target cell, then break away from and transfer the RRC_IDLE state to from described RRC_CONNECTED state.
This method can be further comprising the steps of: after carrying out the step that sends described radio resource control connection reestablishment request message, receive radio resource control connection reestablishment message from described Target cell; And send radio resource control connection reestablishment to described Target cell and finish message.
In another aspect of this invention, provide a kind of and rebuild the method for Radio Resource control connection by the portable terminal that is in the RRC_CONNECTED state, this method may further comprise the steps: based on using the cell quality value from the signal measurement of candidate cell set to come the select target sub-district; Determine the cell type of described Target cell; And when described Target cell provides the two first kind sub-district of emergency service and regular service, send the radio resource control connection reestablishment request message to described Target cell.
This method can be further comprising the steps of: when described Target cell is when the second type sub-district of emergency service only is provided, to carry out the step that Target cell is selected once more.
Preferably, this method can be further comprising the steps of: when described Target cell is not described first kind sub-district, break away from described RRC_CONNECTED state.
This method can be further comprising the steps of: started the cell selecting timer before carrying out the step of selecting described Target cell; And if before described cell selecting timer expires, do not select described Target cell, then break away from and transfer the RRC_IDLE state to from described RRC_CONNECTED state.
This method can be further comprising the steps of: after carrying out the step that sends described radio resource control connection reestablishment request message, receive radio resource control connection reestablishment message from described Target cell; And send radio resource control connection reestablishment to described Target cell and finish message.
In addition, purpose of the present invention can realize by following portable terminal is provided: a kind of and the sub-district that utilizes specific wireless access technology (RAT) are in the multi-radio access technology portable terminal of Radio Resource control (RRC) connection status, described multi-radio access technology portable terminal comprises: receiver module, and described receiver module receives the signal that is used for the calculation plot mass value from one or more sub-district of using described specific wireless access technology; Processor, described processor uses the signal that receives to come the calculation plot mass value, set up the candidate cell mass value by the cell quality value of from the cell quality value of measuring, getting rid of one or more sub-district of using described wireless access technology except that the specific wireless access technology, and based on described candidate cell mass value select target sub-district from described candidate cell set; And sending module, described sending module sends the radio resource control connection reestablishment request message to described Target cell.
Another aspect of the present invention provides a kind of portable terminal, and described portable terminal comprises: receiver module, and described receiver module is used for being used for from the candidate cell group of received signal of calculation plot mass value; Processor, described processor use the signal that receives to come the calculation plot mass value, and come select target sub-district from described candidate cell set based on described cell quality value; And sending module, described sending module sends Radio Resource control (RRC) connection reconstruction request message to described Target cell.In addition, when described Target cell provided the two first kind sub-district of emergency service and regular service, described processor was controlled described sending module and is sent described radio resource control connection reestablishment request message.
Preferably, when described Target cell be that described processor was selected described Target cell once more when the second type sub-district of emergency service only was provided.
Beneficial effect
Embodiments of the present invention have following effect.
At first, can improve the probability of rebuilding the RRC connection.
Secondly, can guarantee the continuity that RRC connects by reducing the service time out.
Description of drawings
Accompanying drawing is included and to provide the present invention is further understood, and it shows embodiments of the present invention, and principle of the present invention is described together with the description.Wherein:
Routine operation when Fig. 1 shows the UE energising under idle pulley.
Fig. 2 shows the network configuration of the E-UMTS that uses embodiments of the present invention.
Fig. 3 shows the network configuration as evolved universal grounding wireless access network network (E-UTRAN) system of the mobile communication system of using embodiments of the present invention.
Fig. 4 A-4B shows based on the control plane of the Radio interface protocols between the UE of 3GPP Radio Access Network standard and the UMTS grounding wireless access network network (UTRAN) and the configuration of user plane.
Fig. 5 shows the figure of an example of the physical channel structure of using in the E-UMTS system, and wherein physical channel comprises a plurality of subframes on the time shaft and a plurality of subcarriers on the frequency axis.
Fig. 6 is the figure of example that the method for a kind of transmission/paging receiving message is shown.
Fig. 7 shows conventional RRC connection reconstruction process.
Fig. 8 shows the situation that RRC connection reconstruction process completes successfully.
Fig. 9 shows the situation of RRC connection reconstruction procedure failure.
Figure 10 shows part RRC connection reconstruction process.
Figure 11 shows according to the cell selecting of the RRC connection reconstruction process of one embodiment of the present invention and handles.
Figure 12 shows the cell selecting of the RRC connection reconstruction process of another execution mode according to the present invention and handles.
Figure 13 shows the part RRC connection reconstruction process according to one embodiment of the present invention.
Figure 14 shows the enhancing RRC connection reconstruction process according to one embodiment of the present invention.
Figure 15 shows the block diagram according to the user equipment (ue) device of one embodiment of the present invention.
Embodiment
Preferred implementation of the present invention by describing with reference to the accompanying drawings is appreciated that configuration of the present invention, operation and further feature.Following execution mode is the example that technical characterictic of the present invention is applied to third generation partner program (3GPP).Yet these execution modes only are exemplary, and the present invention can be used to adopt any communication system of the multiplexing accesses of a plurality of antenna transmission single carrier frequency divisions (SC-FDMA) signal without restriction.
Fig. 2 shows the network configuration of the E-UMTS that uses one embodiment of the present invention.The E-UMTS system is the evolution version of conventional WCDMA UMTS system, and its basic standard is just formulated under third generation partner program (3GPP).E-UMTS is also referred to as Long Term Evolution (LTE) system.Detailed content about the technical specification of UMTS and E-UMTS please refer to " third generation partner program; The technical specification group Radio Access Network " the 7-8 version, its full content merges to this paper by reference.
As shown in Figure 2, E-UMTS mainly comprises subscriber equipment (UE), base station (or eNB, eNode B) and is positioned at network (E-UTRAN) end and is connected to the IAD (AG) of external network.Usually, eNB can send a plurality of data flow simultaneously at broadcast service, multicast services and/or unicast services.
AG can be divided into the part of process user business and the part of processing controls business.Handling the AG part of new customer service and the AG part of processing controls business can utilize interface to intercom mutually.AG moves based on tracing area (TA) management UE's.A TA comprises a plurality of sub-districts.When UE when specific T A moves to another TA, its residing TA of UE notice AG changes.
Core network (CN) can comprise AG and be used for the network node etc. that UE carries out user registration.Can adopt the interface that is used to distinguish E-UTRAN and CN.
Fig. 3 shows the network configuration of evolved universal grounding wireless access network network (E-UTRAN) system of the mobile communication system of using as embodiments of the present invention.E-UTRAN is the evolution version of conventional UTRAN system.E-UTRAN comprises base station (being also referred to as " eNode B " or " eNB ").ENB interconnects by X2 interface.Each eNB is connected to subscriber equipment (UE) by wave point, and is connected to evolution block core (EPC) by the S1 interface.
EPC comprises mobile management entity (MME), gateway (S-GW) and grouped data network gateway (PDN-GW).MME has the information about UE connection or UE ability, and these information are used to manage the mobility of UE.S-GW is the gateway that has as the E-UTRAN of end points, and PDN-GW is the gateway with the packet data network (PDN) as end points.
On the other hand, in 3GPP TS 36.304, the service that E-UTRAN offers UE is divided into three kinds, and example is as shown in table 3.
[table 3]
| Limited service | Urgent call and earthquake and tsunami warning system (ETWS) are provided. |
| Regular service | The regular service of public purpose is provided. |
| Operator's service | Service at operator only is provided. |
In addition, in 3GPP TS 36.304, the service that offers UE according to E-UTRAN defines cell type, and example is as shown in table 4.
[table 4]
| Acceptable cell | The sub-district of limited service only is provided to UE |
| Be suitable for the sub-district | The sub-district of regular service is provided to UE |
| Forbid the sub-district | The sub-district of forbidding according to the indication of system information |
| Keep the sub-district | The sub-district that keeps according to the indication of system information |
In table 4, acceptable cell is the sub-district that is not under an embargo and satisfies the cell selecting standard, and it provides limited service (for example urgent call and ETWS) to UE.
In addition, suitable sub-district is the sub-district of satisfying the condition and the additional conditions of acceptable cell.Additional conditions are that the sub-district belongs to the PLMN that UE can connect, and do not forbid carrying out the TA renewal process.If the sub-district is the CSG sub-district, then UE can connect this sub-district as CSG member.
Fig. 4 A-4B shows in UE and the control plane of the Radio interface protocols between the UMTS grounding wireless access network network (UTRAN) and the configuration of user plane based on 3GPP Radio Access Network standard.Radio interface protocols flatly is divided into physical layer, data link layer and network layer, and vertically is divided into user plane that is used for transfer of data and the control plane that is used to send signal.
Protocol layer among Fig. 4 A-4B can be divided into L1 layer (ground floor), L2 layer (second layer) and L3 layer (the 3rd layer) based on following three layers of well-known OSI(Open Systems Interconnection) reference model in the communication system.
Control plane is to send UE and network to be used for the passage of control messages of administer calls.User plane is the passage that sends the data (for example speech data or the Internet packet data) of application layer generation.To describe control plane in the Radio interface protocols and each layer of user plane below in detail.
Use physical channel to provide formation transfer service as the physical layer of ground floor to upper layer.Physical layer is connected to medium access control (MAC) layer that is positioned at the physical layer top by transmission channel.Between MAC layer and physical layer, transmit data by transmission channel.Carry out transfer of data between the different physical layers (especially each physical layer of transmitter side and receiver side) by physical channel.According to OFDM (OFDM) method, employing time and frequency are modulated physical channel as Radio Resource.
The MAC layer of the second layer provides service by logic channel to Radio Link control (RLC) layer that is positioned at the MAC top.The rlc layer of the second layer is supported transfer of data reliably.The function of rlc layer also can realize by the internal functional blocks of MAC layer.At this moment, rlc layer needn't be set.The PDCP layer of the second layer is carried out header compression function reducing unnecessary control information, thereby sends IP packet (for example IPv4 or IPv6 packet) with relative narrower bandwidth efficient ground in wave point.
Be arranged in the 3rd layer Radio Resource control (RRC) layer of below only define at control plane, and be responsible for control and radio bearer (RB) configuration, reconfigure and discharge logic channel, transmission channel and the physical channel that is associated.RB is the service that is used for the data communication between UE and the UTRAN that the second layer provides.For this reason, the rrc layer of the rrc layer of UE and network exchange RRC message.
RRC state and the RRC method of attachment of UE are described below.Whether the rrc layer of RRC state indication UE is connected with the rrc layer logic of E-UTRAN.If the rrc layer of UE is connected with the rrc layer of E-UTRAN, then UE is in the RRC_ connection status.Otherwise UE is in the RRC_ idle condition.
E-UTRAN can detect the existence of the UE under the RRC_ connection status by cell unit, controls UE then effectively.On the other hand, E-UTRAN can not detect the existence of the UE under the RRC_ idle condition by non-cell unit, and CN is by TA unit controls UE.That is to say that for for example service such as voice or data is provided from the sub-district, UE must transfer the RRC_ connection status to from the disengaging of RRC_ idle condition.
Especially, when the user opened the power supply of UE, UE can retrieve suitable sub-district, then this sub-district of preemption under the RRC_ idle condition.The UE that is under the RRC_ idle condition can not carry out RRC connection reconstruction process with the RRC of E-UTRAN, and up to being necessary that having RRC connects, and just transfers the RRC_ connection status to.Herein, UE is necessary to have situation that RRC connects and comprises and sending because the uplink data that user's call try produces, transmission response message etc. when E-UTRAN receives beep-page message.
Like this, owing to when UE determines its sub-district that preempts as yet under the RRC_ idle condition, do not carried out the cell selecting processing, so select the sub-district very important as early as possible.Therefore, even a sub-district fails to provide signal (promptly this sub-district is acceptable cell but not is suitable for the sub-district) the best in quality to UE, select this sub-district but also can handle by cell selecting.
On the other hand, when make UE can not be with the sub-district proper communication time owing to the configuration conflict between wireless channel degeneration or UE and the network, can determine that UE breaks down in current communication link.UE can begin RRC connection reconstruction process then.
Especially, in 3GPP TS 36.331, UE can not show as with the situation of sub-district proper communication: (a) result who measures based on the wireless quality in the physical layer, and UE determines that serious problems appear in the quality of downlink communication link; Perhaps because random access procedure is failed or uplink data transmission failure repeatedly in the RLC sublayer repeatedly at media access control sublayer, UE determines that serious problems appear in the quality of uplink communication link; (b) UE determines the handoff procedure failure; Or (c) message that receives of UE not by integrity check etc.
In Fig. 4 A, the Non-Access Stratum (NAS) that is positioned at rrc layer top is carried out for example function of session management and mobile management.In the NAS layer, be two states, i.e. EPS Mobility Management (EMM)-enrollment status and the unregistered state of EMM-of having defined that move of management UE.This two states is applied to UE and MME.At first, UE is in the unregistered state of EMM-, and UE registers to be connected to network on network by initial connection procedure then.After initial connection procedure successful execution, UE and MME are in the EMM-enrollment status.
In addition, be connected with signaling between EPC and in the NAS layer, defined EPS Connection Management (ECM)-enrollment status and the unregistered state of ECM-in order to manage UE, and this two states is applied to UE and MME.UE under being in the unregistered state of ECM-and E-UTRAN have RRC when being connected, and this UE that is under the unregistered state of ECM-switches to the ECM-enrollment status.MME under being in the unregistered state of ECM-and E-UTRAN have S1 when being connected, and this MME that is under the unregistered state of ECM-switches to the ECM-enrollment status.
When UE was in the unregistered state of ECM-, E-UTRAN did not have the environment of UE.Therefore, be in UE under the unregistered state of ECM-and carry out mobile correlated process based on UE, for example cell selecting is handled or cell reselection process, no matter whether receives order from network.On the other hand, when UE is in the ECM-enrollment status, manage moving of UE by the order of network.When the position of UE and the position known to the network not simultaneously, UE informs network by the TA renewal process with the position of UE.
Fig. 5 shows the schematic diagram of an example of the physical channel structure of using in the E-UMTS system, and wherein physical channel comprises a plurality of subframes on the time shaft and a plurality of subcarriers on the frequency axis.Herein, subframe comprises the symbol on a plurality of time shafts.A subframe comprises a plurality of Resource Block, and a Resource Block comprises a plurality of symbols and a plurality of subcarrier.In the LTE system, adopt the radio frames of 10ms, and a radio frames comprises 10 subframes.In addition, a subframe comprises two continuous slots.The length of a time slot can be 0.5ms.The unit interval of transfer of data, promptly Transmission Time Interval (TTI) is 1ms.
As shown in Figure 5, each subframe can be used the specific subcarrier of special symbol (for example, first symbol) of the subframe of Physical Downlink Control Channel (PDCCH) (that is L1/L2 control channel).Figure 5 illustrates L1/L2 control information transmission region (PDCCH, 501) and data area (PDSCH, 502).
Base station and UE mainly adopt the DL-SCH as transmission channel to send/receive specific control signal or service data data in addition via the PDSCH (502) as physical channel.Indication sends to the information how which or which UE and UE to receive the decode the PDSCH data with PDSCH (502) data and sends with the state that is included among the PDCCH (501).
For example in one embodiment, adopt Radio Network Temporary Identifier (RNTI) " A " that specific PDCCH is carried out the CRC-mask, and adopt Radio Resource " B " (for example frequency layout) and transport format information " C " (for example transmission block size, modulation, coded message etc.) to transmit information about data via specific sub-frame.Then, one or more UE that is arranged in the sub-district adopts its RNTI information to monitor PDCCH (501).And the particular UE with RNTI " A " reads PDCCH (501), receives the PDSCH (502) by B, C indication in PDCCH (501) information then.
Fig. 6 is the schematic diagram of example that the method for a kind of transmission/paging receiving message is shown.
As shown in Figure 6, beep-page message comprises paging acknowledgment, and it comprises paging reason and UE sign.When paging receiving message, UE can carry out discontinuous reception (DRX) to reduce power consumption.
More specifically, network has disposed a plurality of paging occasion being called in each cycle of paging DRX cycle, and particular UE only receives specific paging occasion and obtains beep-page message.Paging occasion beyond the specific paging occasion, UE can the paging receiving channel, and can switch to sleep pattern to reduce power consumption.A paging occasion is corresponding to a TTI.
Base station and UE with Paging Indicator (PI) as the particular value that is used to inform that beep-page message has sent.The base station can be defined as specific identifier (for example pager wireless net network temporary mark (P-RNTI)) PI and inform that the UE beep-page message sends.For example, UE is waken up and receives a subframe and beep-page message whether occurs to understand in each DRX cycle.If the L1/L2 control channel (PDCCH) of the subframe that receives comprises P-RNTI, then UE learns that beep-page message is included among the PDSCH of subframe.In addition, if UE sign (for example IMSI) appears in the beep-page message, then UE responds (for example RRC connects) and receives service the base station.
Understand RRC connection reconstruction process in the following description specifically.Fig. 7 shows conventional RRC connection reconstruction process.
As shown in Figure 7, UE can suspend at each radio bearer, except the SRB0 (Signaling Radio Bearer #0), and can carry out initialization to a plurality of sublayers of Access Layer (AS).Then, UE can be arranged to default configuration with each sublayer and physical layer.In this, it is extremely important that UE keeps the RRC_ connection status.(S701)
In addition, UE can carry out the cell selecting processing of RRC connection reconstruction process.(S702) the conventional cell selecting of RRC connection reconstruction process is handled and is equal to the cell selecting that the UE that is under the RRC_ idle condition carries out and handles.
If the sub-district (S703) that UE will be defined as using E-UTRA by the sub-district that the cell selecting processing of RRC connection reconstruction process is selected, then UE can send to RRC connection reconstruction request message selected sub-district (S704).
On the other hand, be to use the sub-district (S703) of the RAT except that E-UTRA if UE determines selected sub-district, then UE can suspend RRC connection reconstruction process, enters RRC_ idle condition (S707) from the RRC_ connection status then.In addition, if UE does not select the sub-district all the time before the cell selecting timer expires, then UE determines RRC connection reconstruction procedure failure, enters the RRC_ idle condition from the RRC_ connection status then.
If the request of RRC connection reconstruction is accepted in the sub-district, then send the RRC connection reconstruction and accept message (S705) to UE.Receive that the RRC connection reconstruction accepts the UE of message and can rebuild PDCP sublayer and RLC sublayer about SRB1.Then, UE can recomputate a plurality of key values, then key value is reconfigured to the PDCP sublayer about safety.As a result, can set up SRB1 between UE and sub-district, UE can transmit the RRC control messages then.Then, UE can finish the reconstruction of SRB1, sends the RRC connection reconstruction then and finishes message.Fig. 8 shows the situation (for example S704, S705, S706) that RRC connection reconstruction process completes successfully.
Therefore, after RRC connection reconstruction process completed successfully, UE can carry out RRC and connect the process that reconfigures.Then, UE can recover to carry out the condition that RRC connection reconstruction process is provided with before, thereby has guaranteed the continuity of service.
On the other hand, if sub-district refusal RRC connection reconstruction request, then the sub-district sends RRC connection reconstruction refuse information to UE.The UE that receives RRC connection reconstruction refuse information can discharge the RRC_ connection status and switch to the RRC_ idle condition.Fig. 9 shows the situation of RRC connection reconstruction procedure failure.
Break away from and after transferring the RRC_ idle condition to, the RRC of UE can discharge all items that use Radio Resources (that is, all RLC entities, MAC configuration and PDCP entity) from the RRC_ connection status at UE, and the release of RRC connection is informed the NAS of UE.In addition, the AS of UE can carry out initial cell selection processing at the UE under the RRC_ idle condition.
Following description discloses the weakness of conventional RRC connection reconstruction process, and shows part RRC connection reconstruction process with reference to Figure 10.
When RRC connection reconstruction process begins, at first begin the operation (S1001) of cell selecting timer.At this moment, UE keeps the RRC_ connection status.In addition, UE can receive and measure the wireless signal that receives from candidate cell, and is cell selecting processing calculation plot mass value (S1002).Then, UE selects the Target cell of RRC connection reconstruction from candidate cell based on the cell quality value.Candidate cell comprises the sub-district of the every kind of RAT that uses the UE support and the sub-district of using E-UTRA.
In addition, the cell selecting of S1002, S1003 is handled to have and is used for selecting the maximum permission time of sub-district in RRC connection reconstruction process.That is to say that if UE failed to select sub-district (S1004) all the time before the cell selecting timer expires, then UE discharges the RRC connection and transfers RRC_ idle condition (S1007) to from the disengaging of RRC_ connection status.
If UE can select to use the sub-district of E-UTRA in S1003, then UE sends to selected sub-district with RRC connection reconstruction request message.In addition, if UE can select to use the sub-district of the RAT except that E-UTRA in S1003, then UE determines RRC connection reconstruction procedure failure.Then, UE discharges the RRC connection and transfers RRC_ idle condition (S1007) to from the disengaging of RRC_ connection status.
As mentioned above, UE can select to use the sub-district of the RAT except that E-UTRA, and this is called sub-district gravity treatment between RAT.In order intactly to carry out RRC connection reconstruction process, selected sub-district must have the environment of UE.Yet, use the sub-district of the RAT except that E-UTRA not have this environment, thereby can not support RRC connection reconstruction process.Therefore, selected to use the UE of the sub-district of the RAT except that E-UTRA should discharge the RRC connection and transfer RRC_ idle condition, for example S1007 to from the disengaging of RRC_ connection status.In addition, the UE that transfers the RRC_ idle condition from the disengaging of RRC_ connection status to should carry out each process that acquisition is served.That is to say that although UE has an opportunity to select to use the sub-district of E-UTRA before the cell selecting timer expires, from angle out of service, discharging the RRC connection and carrying out each process that connects at RRC is inefficient for UE.
Therefore, in the cell selecting of RRC connection reconstruction process of the present invention is handled, from candidate cell, get rid of the sub-district of using the RAT except that E-UTRA, and the sub-district that can select to use E-UTRA as far as possible.
In order to realize above-mentioned feature of the present invention, UE can check whether the cell selecting timer works, and selects pack processing to be contained in the RRC connection reconstruction process to confirm current area.In addition, in order from candidate cell, to get rid of the sub-district of using the RAT except that E-UTRA,, then can close receiver at the RAT except that E-UTRA if current area selects pack processing to be contained in the RRC connection reconstruction process.Alternatively, by ignoring with the sub-district corresponding district mass value that uses other RAT or being provided with these cell quality values very low forcibly, make UE allow and use the sub-district of other RAT not satisfy the cell selecting standard.
If UE selects to use the sub-district of E-UTRA in cell selecting is handled, then the type of selected sub-district is depended in the success or not of RRC connection reconstruction process.That is to say that the sub-district of using E-UTRA can be the suitable sub-district that the normal service of definition among the 3GPP TS 36.304 is provided to UE, maybe can not satisfy the acceptable cell of the full terms that is suitable for the sub-district.In the prior art, regardless of cell type, UE sends RRC connection reconstruction request message to the selected sub-district of using E-UTRA all the time.
Yet, the same with the sub-district of using the RAT except that E-UTRA, because acceptable cell does not have configuration information and the environment of the UE that carries out RRC connection reconstruction process, so acceptable cell can not be supported RRC connection reconstruction process.Therefore, acceptable cell can send RRC connection reconstruction refuse information to UE in response to RRC connection reconstruction request message.As a result, UE still has an opportunity to select to be suitable for the sub-district, expires until the cell selecting timer.
Therefore, for example in the prior art, directly send the failure that RRC connection reconstruction request message only can cause RRC connection reconstruction process to acceptable cell.In addition, from angle out of service, discharging the RRC connection and carrying out each process that connects at RRC is inefficient for UE.
Therefore, in the present invention, having only the selected sub-district of using E-UTRA is to be suitable for the sub-district, and UE just sends RRC connection reconstruction request message to selected sub-district.If the selected sub-district of use E-UTRA is acceptable cell but not is suitable for the sub-district that then UE can carry out the cell selecting processing once more, and does not send RRC connection reconstruction request message.
In order to solve above-mentioned weakness, the method for getting rid of the sub-district of using the RAT except that E-UTRA is hereinafter disclosed from candidate cell, just and to have only selected sub-district be the method that suitable sub-district sends RRC connection reconstruction request message.In addition, also open enhancing RRC connection reconstruction process of finishing the method for stating of closing.
＜method of the sub-district of the RAT except that E-UTRA is used in eliminating from candidate cell 〉
Figure 11 shows according to the cell selecting of the RRC connection reconstruction process of one embodiment of the present invention and handles.Particularly, the cell selecting processing of adopting the method for the receiver power supply of closing the RAT except that E-UTRA in order to get rid of the sub-district of using the RAT except that E-UTRA from candidate cell is disclosed in Figure 11.
As shown in figure 11, when RRC connection reconstruction process begins, at first begin the work (S1101) of cell selecting timer.At this moment, UE keeps the RRC_ connection status.
When UE began the cell selecting processing, UE can check current area selects processing whether to be included in the RRC connection reconstruction process.That is to say that UE can check cell selecting timer whether work (S1102).
Be not included in (being that the cell selecting timer is not worked) in the RRC connection reconstruction process if current area select to be handled, then UE can consider that the sub-district that use is obtained the various RAT that UE supports handles to carry out cell selecting as candidate cell.(S1104)
On the other hand, if current area selects pack processing to be contained in (being that the cell selecting timer is worked) in the RRC connection reconstruction process, then UE can get rid of the sub-district (S1103) of using the RAT except that E-UTRA from candidate cell.That is to say that UE can close the receiver of the RAT except that E-UTRA, thereby in cell selecting is handled, increase the sub-district that following condition: UE does not consider to use the RAT except that E-UTRA.
In addition, UE can measure wireless signal and the calculation plot mass value (S1104) that receives from candidate cell.UE can come select target sub-district (S1105) based on the cell quality value then.If current area selects pack processing to be contained in the RRC connection reconstruction process, then UE can be based on this condition select target sub-district from candidate cell.At this moment, selected Target cell is to use the sub-district of E-UTRA.Yet, if selecting to handle, current area is not included in the RRC connection reconstruction process, selected Target cell can be the sub-district of using E-UTRA or other RAT.
If UE fails to select sub-district (S1106) all the time before the cell selecting timer expires, then UE can discharge the RRC connection and transfer RRC_ idle condition (S1108) to from the disengaging of RRC_ connection status.In addition, if UE has selected to use the sub-district of E-UTRA in S1105, then UE can send RRC connection reconstruction request message to selected sub-district.
Figure 12 shows the cell selecting of the RRC connection reconstruction process of another execution mode according to the present invention and handles.Particularly, among Figure 12 disclosed cell selecting handle adopted ignore with the method for the sub-district corresponding district mass value that uses other RAT or with these cell quality values be provided with forcibly very low method, thereby in candidate cell, get rid of the sub-district of using the RAT except that E-UTRA.
As shown in figure 12, when RRC connection reconstruction process begins, at first begin the work (S1201) of cell selecting timer.At this moment, UE keeps the RRC_ connection status.Then, UE can measure wireless signal and the calculation plot mass value (S1202) that receives from candidate cell.
In addition, UE can check current area selects processing whether to be included in the RRC connection reconstruction process.That is to say that UE can check cell selecting timer whether work (S1203).
Be not included in (being that the cell selecting timer is not worked) in the RRC connection reconstruction process if current area is selected to handle, but then the execution of UE former state ground adopts the cell selecting of the wireless signal of measuring to handle (S1205).
On the other hand, if current area selects pack processing to be contained in (being that the cell selecting timer is worked) in the RRC connection reconstruction process, then UE can by ignore with the sub-district corresponding district mass value that uses other RAT or with these cell quality values be provided with forcibly the very low candidate cell mass value (S1204) that obtains.Like this, UE can allow the cell configuration of using other RAT for not satisfying the cell selecting standard.
In addition, UE can come the select target sub-district based on cell quality value of calculating among the S1202 or candidate cell mass value.If current area selects pack processing to be contained in the RRC connection reconstruction process, then UE can carry out the cell selecting processing based on the candidate cell mass value.At this moment, Target cell must be to use the sub-district of E-UTRA.Yet, if selecting to handle, current area is not included in the RRC connection reconstruction process, Target cell can be the sub-district of using E-UTRA or other RAT.
If UE fails to select sub-district (S1206) all the time before the cell selecting timer expires, then UE can discharge the RRC connection and transfer RRC_ idle condition (S1208) to from the disengaging of RRC_ connection status.In addition, if UE has selected to use the sub-district of E-UTRA in S1205, then UE can send RRC connection reconstruction request message to selected sub-district.
＜to have only selected sub-district be to be suitable for the method that the sub-district just sends RRC connection reconstruction request message 〉
Figure 13 shows the part RRC connection reconstruction process according to one embodiment of the present invention.Particularly, disclose in Figure 13 that to have only selected sub-district be to be suitable for the method that the sub-district just sends RRC connection reconstruction request message, this method is not in conjunction with the above-mentioned method of getting rid of the sub-district of using the RAT except that E-UTRA from candidate cell.
As shown in figure 13, when RRC connection reconstruction process begins, at first begin the work (S1301) of cell selecting timer.Then, UE can measure wireless signal and the calculation plot mass value (S1302) that receives from candidate cell.Then, UE can come select target sub-district (S1303) based on the cell quality value.At this moment, selected Target cell can be the sub-district of using E-UTRA or other RAT.
Yet if UE fails to select sub-district (S1304) all the time before the cell selecting timer expires, UE can discharge the RRC connection and transfer RRC_ idle condition (S1308) to from the disengaging of RRC_ connection status.In addition, if UE has selected to use the sub-district of the RAT except that E-UTRA in S1303, then UE can stop RRC connection reconstruction process and discharge RRC connecting.That is to say that UE can transfer the RRC_ idle condition to from the disengaging of RRC_ connection status.
If UE has selected to use the sub-district of E-UTRA in S1303, then UE can check selected cell type (S1306) before sending RRC connection reconstruction request message.UE can read about the SI of selected sub-district and utilize the information that is stored among the UE, thereby checks selected cell type.If selected sub-district is to be suitable for the sub-district, then UE can send RRC connection reconstruction request message (S1307) to selected sub-district.
On the other hand, if selected sub-district is an acceptable cell, then UE execution in step S1302～S1306 once more expires until the cell selecting timer, and does not send RRC connection reconstruction request message.
＜enhancing RRC connection reconstruction process 〉
Figure 14 shows the enhancing RRC connection reconstruction process according to one embodiment of the present invention.Particularly, in Figure 14, adopt the cell selecting of the method for the receiver power supply of closing the RAT except that E-UTRA to handle the sub-district that is illustrated as the RAT of eliminating use except that E-UTRA from candidate cell.Yet, cell selecting handle also can adopt the method for ignoring with the sub-district corresponding district mass value that uses other RAT maybe this cell quality value is provided with forcibly very low method.
In addition, step S1401～S1406 is similar to the S1101～S1106 among Figure 11, has therefore omitted the detailed description about step S1401～S1406.
As shown in figure 14, work (S1402) if UE is checked through the cell selecting timer, then UE can get rid of the sub-district (S1403) of using the RAT except that E-UTRA from candidate cell.
In addition, UE can measure wireless signal and the calculation plot mass value (S1404) that receives from candidate cell.UE can come select target sub-district (S1405) based on the cell quality value then.At this moment, selected Target cell is to use the sub-district of E-UTRA.If UE has selected to use the sub-district of E-UTRA, then UE can check selected cell type (S1407) before sending RRC connection reconstruction request message.Therefore, be to be suitable for the sub-district if use the selected sub-district of E-UTRA, then UE can send RRC connection reconstruction request message (S1408) to the selected sub-district of using E-UTRA.
On the other hand, be acceptable cell if use the selected sub-district of E-UTRA, then UE once more execution in step S1404～S1407 expire until the cell selecting timer, and do not send RRC connection reconstruction request message.
Figure 15 shows the block diagram according to the user equipment (ue) device of one embodiment of the present invention.
As shown in figure 15, user equipment (ue) device of the present invention can comprise receiver module 1510, processor 1520 and sending module 1530.In addition, processor 1520 can comprise wireless signal measurement module 1540 and cell selecting module 1550.
The generality operation of processor 1520 may command user equipment (ue) devices particularly can generate the control signal (for example RRC connection reconstruction request message and RRC connection reconstruction are finished message) that sends in cell selecting or the cell reselection process.
In addition, the wireless signal measurement module 1540 that is included in the processor 1520 can be at cell selecting or cell reselection process measuring-signal characteristic, with the calculation plot mass value.Herein, characteristics of signals is the characteristic of the physical signalling relevant with the intensity of reference signal or pilot signal or signal to interference and noise ratio etc.
The cell selecting module 1550 that is included in the processor 1520 can be retrieved candidate cell at cell selecting or cell reselection process based on the cell quality value.Particularly, cell selecting module 1550 can check current area selects processing whether to be included in the RRC connection reconstruction process.Preferably, cell selecting module 1550 can check whether the cell selecting timer works.
Preferably, if current area selects pack processing to be contained in the RRC connection reconstruction process, then cell selecting module 1550 can be got rid of the sub-district of using the RAT except that E-UTRA from candidate cell.
In order to realize above-mentioned feature of the present invention, cell selecting module 1550 can be closed the receiver of the RAT except that E-UTRA.
Alternatively, cell selecting module 1550 can obtain the candidate cell mass value by ignoring with the sub-district corresponding district mass value that uses other RAT or these cell quality values being set to very low value forcibly.At this moment, cell selecting module 1550 can be come the select target sub-district based on the candidate cell mass value.
In the cell selecting of RRC connection reconstruction process was handled, processor 1520 can only consider to use the suitable sub-district conduct in the selected sub-district of E-UTRA to be used for the Target cell of RRC connection reconstruction process.That is to say, be to receive the sub-district if use the selected sub-district of E-UTRA, and then processor 1520 may command cell selecting modules 1550 retrieves once more and are suitable for the sub-district and expire until the cell selecting timer, rather than transmission RRC connection reconstruction request message.
Sending module 1530 can send RRC connection reconstruction request message to the sub-district, the RRC connection reconstruction is finished message and uplink data or control data.Particularly, having only the selected sub-district of using E-UTRA is that sending module 1530 just can send RRC connection reconstruction request message to the sub-district when being suitable for the sub-district.
Above-mentioned execution mode is the combination that parts of the present invention and feature obtain with predetermined form.Except as otherwise noted, these parts or feature can randomly be considered.These parts or feature can be not yet with other parts or characteristics combination and be achieved.Also can constitute embodiments of the present invention by making up some parts and/or feature.Embodiment of the present invention the operation described order can change.Some parts of any execution mode or feature can comprise in another embodiment or by the corresponding component or the character displacement of another execution mode.It will be apparent to one skilled in the art that perhaps will not have clear and definite related claim by the modification after the application and to be included as new claim in conjunction with the claim that there is no clear and definite association to constitute execution mode.
In this specification, the description of embodiments of the present invention focuses on the data transmission/reception between UE and the base station.If necessary, the specific operation of being carried out by the base station can be carried out by upper node.That is to say, can carry out by base station or other network node except that the base station by the various operations that the network that comprises a plurality of network nodes (comprising the base station of communicating by letter with UE) is carried out.Term " base station " can be replaced by fixed station, Node B, eNode B (eNB) or access point.In addition, term " UE " can be replaced by mobile radio station (MS) or mobile subscriber station (MSS).
Embodiments of the present invention can be realized for example hardware, firmware, software or their combination by various unit.Especially, above-mentioned UE, eNB and MME equipment comprise one or more processor that is used for the corresponding steps shown in the execution graph 11-16.Above-mentioned UE, eNB and MME equipment also comprise Network Interface Unit and other communication module.Above-mentioned UE, eNB and MME equipment also comprise demonstration and input unit or parts.
Each execution mode of the present invention can be realized as lower member by one or more: application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller or microprocessor.
Each execution mode of the present invention can be by being used to carry out above-mentioned functions or operation the form of software module, process or function realize.Software code can be stored in the memory cell and by processor operations.It is inner or outside that memory cell can be positioned at processor, thereby by various known unit and processor swap data.
To those skilled in the art, obviously can under the prerequisite that does not depart from the spirit or scope of the present invention, carry out various modification and change to the present invention.Therefore, the present invention is intended to contain of the present invention various modification and the change in the scope that falls into claims and equivalent thereof.
Industrial applicibility
The present invention can be applicable to wireless communication system. More specifically, the present invention can be applicable to reselect the method for residential quarter in wireless communication system.
Claims (17)
1. one kind by rebuilding the method that Radio Resource control (RRC) is connected with the multi-radio access technology portable terminal that the sub-district that utilizes specific wireless access technology (RAT) is in the RRC_CONNECTED state, and this method may further comprise the steps:
Use one or more sub-district of the wireless access technology except that described specific wireless access technology to set up candidate cell set by from candidate cell set, getting rid of;
Based on each sub-district corresponding district mass value select target sub-district from described candidate cell set that is included in the described candidate cell set; And
Send the radio resource control connection reestablishment request message to described Target cell.
2. the step of the method for claim 1, wherein setting up described candidate cell set may further comprise the steps:
Close one or more receiver of the wireless access technology except that described specific wireless access technology.
3. the method for claim 1, this method is further comprising the steps of:
Started the cell selecting timer set up the step of described candidate cell set in execution before; And
If before described cell selecting timer expires, do not select described Target cell, then transfer the RRC_IDLE state to from described RRC_CONNECTED state disengaging.
4. the method for claim 1, this method is further comprising the steps of:
After carrying out the step that sends described radio resource control connection reestablishment request message, receive radio resource control connection reestablishment message from described Target cell; And
Send radio resource control connection reestablishment to described Target cell and finish message.
5. one kind by rebuilding the method that Radio Resource control (RRC) is connected with the multi-radio access technology portable terminal that the sub-district that utilizes specific wireless access technology (RAT) is in the RRC_CONNECTED state, and this method may further comprise the steps:
Use is measured the cell quality value from the signal of candidate cell set;
Set up the candidate cell mass value by the cell quality value of from the cell quality value of measuring, getting rid of one or more sub-district of using the wireless access technology except that described specific wireless access technology;
Come the select target sub-district based on described candidate cell mass value; And
Send the radio resource control connection reestablishment request message to described Target cell.
6. method as claimed in claim 5, this method is further comprising the steps of:
Before carrying out the step of measuring the cell quality value, start the cell selecting timer; And
If before described cell selecting timer expires, do not select described Target cell, then transfer the RRC_IDLE state to from described RRC_CONNECTED state disengaging.
7. method as claimed in claim 5, this method is further comprising the steps of:
After carrying out the step that sends described radio resource control connection reestablishment request message, receive radio resource control connection reestablishment message from described Target cell; And
Send radio resource control connection reestablishment to described Target cell and finish message.
8. rebuild the method for Radio Resource control connection by the portable terminal that is in the RRC_CONNECTED state for one kind, this method may further comprise the steps:
Come the select target sub-district based on the cell quality value that the signal that uses from candidate cell set records;
Determine the cell type of described Target cell; And
When described Target cell provides the two first kind sub-district of emergency service and regular service, send the radio resource control connection reestablishment request message to described Target cell.
9. method as claimed in claim 8, this method is further comprising the steps of:
When described Target cell is when the second type sub-district of described emergency service only is provided, to carry out the step that Target cell is selected once more.
10. method as claimed in claim 8, this method is further comprising the steps of:
When described Target cell is not described first kind sub-district, break away from described RRC_CONNECTED state.
11. method as claimed in claim 8, this method is further comprising the steps of:
When described Target cell provide emergency service and regular service the two first kind sub-district and when using the evolved universal terrestrial wireless to insert (E-UTRA), send described radio resource control connection reestablishment request message to described Target cell.
12. method as claimed in claim 8, this method is further comprising the steps of:
Before carrying out the step of selecting described Target cell, start the cell selecting timer; And
If before described cell selecting timer expires, do not select described Target cell, then transfer the RRC_IDLE state to from described RRC_CONNECTED state disengaging.
13. method as claimed in claim 8, this method is further comprising the steps of:
After carrying out the step that sends described radio resource control connection reestablishment request message, receive radio resource control connection reestablishment message from described Target cell; And
Send radio resource control connection reestablishment to described Target cell and finish message.
14. one kind is in the multi-radio access technology portable terminal of RRC_CONNECTED state with the sub-district that utilizes specific wireless access technology (RAT), described multi-radio access technology portable terminal comprises:
Receiver module, described receiver module receives the signal that is used for the calculation plot mass value from one or more sub-district of using described specific wireless access technology;
Processor, described processor use the signal that receives to come the calculation plot mass value, and based on described cell quality value select target sub-district from described sub-district; And
Sending module, described sending module sends Radio Resource control (RRC) connection reconstruction request message to described Target cell.
15. one kind is in the multi-radio access technology portable terminal of RRC_CONNECTED state with the sub-district that utilizes specific wireless access technology (RAT), described multi-radio access technology portable terminal comprises:
Receiver module, described receiver module are used for the signal of calculation plot mass value from the candidate cell group of received;
Processor, described processor uses the signal that receives to come the calculation plot mass value, set up the candidate cell mass value by the cell quality value of from the cell quality value that records, getting rid of one or more sub-district of using the wireless access technology except that described specific wireless access technology, and based on described candidate cell mass value select target sub-district from described candidate cell set; And
Sending module, described sending module sends the radio resource control connection reestablishment request message to described Target cell.
16. a portable terminal, described portable terminal comprises:
Receiver module, described receiver module is used for being used for from the candidate cell group of received signal of calculation plot mass value;
Processor, described processor use the signal that receives to come the calculation plot mass value, and come select target sub-district from described candidate cell set based on described cell quality value; And
Sending module, described sending module sends Radio Resource control (RRC) connection reconstruction request message to described Target cell,
Wherein when described Target cell provided the two first kind sub-district of emergency service and regular service, described processor was controlled described sending module and is sent described radio resource control connection reestablishment request message.
17. portable terminal as claimed in claim 16, wherein, when described Target cell is that described processor was selected described Target cell once more when the second type sub-district of described emergency service only was provided.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11095508P | 2008-11-03 | 2008-11-03 | |
| US61/110,955 | 2008-11-03 | ||
| KR10-2009-0097050 | 2009-10-13 | ||
| KR1020090097050A KR101622219B1 (en) | 2008-11-03 | 2009-10-13 | Method and apparatus for RRC connection reestablishment in wireless communication system |
| PCT/KR2009/006327 WO2010062043A2 (en) | 2008-11-03 | 2009-10-30 | Method and apparatus for rrc connection reestablishment in wireless communication system |
Publications (2)
| Publication Number | Publication Date |
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| CN106688282A (en) * | 2014-08-06 | 2017-05-17 | Lg电子株式会社 | Method for operating terminal in wireless communication system, and terminal using same |
| CN106792928A (en) * | 2015-11-23 | 2017-05-31 | 中国移动通信集团公司 | A kind of method and device of accessing terminal to network |
| CN106961712A (en) * | 2016-01-12 | 2017-07-18 | 展讯通信（上海）有限公司 | Cell accessing method and base station |
| CN107454636A (en) * | 2016-05-31 | 2017-12-08 | 宏达国际电子股份有限公司 | Handle the device and method of user terminal level of access context |
| CN108370601A (en) * | 2015-12-22 | 2018-08-03 | 华为技术有限公司 | Data transmission processing method, user equipment and base station |
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| WO2019056979A1 (en) * | 2017-09-22 | 2019-03-28 | 中兴通讯股份有限公司 | Communication method under wireless base station separation architecture, functional entity and wireless base station |
| CN114258040A (en) * | 2020-09-22 | 2022-03-29 | 紫光展锐(重庆)科技有限公司 | Selection method and device for reconstruction target cell, storage medium and terminal |
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| HUE029183T2 (en) * | 2011-08-11 | 2017-02-28 | Intel Corp | Methods for switching between a mbms download and an http-based delivery of dash formatted content over an ims network |
| KR102219599B1 (en) * | 2013-08-02 | 2021-02-25 | 삼성전자 주식회사 | Method and appratus for selecting network and traffic offloading during different network communication |
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| EP1361768B1 (en) * | 2002-05-03 | 2007-06-13 | Innovative Sonic Limited | Method of cell update via idle mode for power saving in a UMTS mobile upon radio link failure. |
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| CN101132611B (en) * | 2006-08-24 | 2012-04-04 | 华为技术有限公司 | Method and terminal for controlling connection reconstruction in long-term evolution system |
-
2009
- 2009-10-13 KR KR1020090097050A patent/KR101622219B1/en active IP Right Grant
- 2009-10-30 CN CN200980143319.7A patent/CN102204338B/en not_active Expired - Fee Related
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| CN108377494A (en) * | 2016-11-22 | 2018-08-07 | 深圳市中兴微电子技术有限公司 | A kind of terminal abnormal flow guard method and device |
| WO2019056979A1 (en) * | 2017-09-22 | 2019-03-28 | 中兴通讯股份有限公司 | Communication method under wireless base station separation architecture, functional entity and wireless base station |
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| CN114258040B (en) * | 2020-09-22 | 2023-10-27 | 紫光展锐(重庆)科技有限公司 | Method and device for selecting reconstruction target cell, storage medium and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102204338B (en) | 2014-05-14 |
| KR101622219B1 (en) | 2016-05-18 |
| KR20100049483A (en) | 2010-05-12 |
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