CN101860977B - Method and system for base station to obtain UE context information - Google Patents
Method and system for base station to obtain UE context information Download PDFInfo
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Abstract
The invention discloses a method for a base station to obtain user equipment (UE) context information. The UE context information comprises UE high-speed downlink shared channel (HS-DSCH) competence scale information, strengthened dedicated channel (E-DCH) competence scale information, the HS-DSCH wireless network temporary identity of UE and an E-DCH wireless network temporary identity (E-RNTI); RNC sends the UE context information to the base station through the HS-DSCH data frame or control frame of the Iub interface of the RNC and the base station; and the base station receives and saves the UE context information. The invention discloses a system causing the base station to obtain the UE context information. The scheme of the invention solves the problem that a terminal is transferred to CELL-PCH or CELL-FACH state in the HSPA+ system, the base station can not obtain H-RNTI and E-RNTI correspondence, the HS-DSCH competence scale information and the E-DCH competence scale information of the terminal to cause subsequent abnormal communication.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly make the base station obtain the method and system of UE contextual information.
Background technology
Insert (High Speed Downlink Package Access in high-speed downlink packet; HSDPA) defined different user equipment (UE) ability rating in the system to support different HSDPA peak rates; The ability rating of HSDPA is expressed as high-speed downlink shared channel (High-Speed Downlink Shared Channel, HS-DSCH) physical layer ability rating (HS-DSCH physical layer category).In traditional HSDPA system, HS-DSCH physical layer ability rating value is 1-15.
The UE ability rating has reacted following content:
UE cache size and UE the Transmission Time Interval of a 5ms (Transmission Time Interval, in TTI) the physical channel resources amount that can receive simultaneously, said physical channel resources comprises time slot and code channel etc.;
The big or small upper limit of transmission block (TBS) that the interior UE of TTI can receive.
In the HSDPA operation, UE needs to foresee the TBS dimension information that carries in the HS-DSCH data of this reception before receiving HS-DSCH, and the TBS dimension information of HS-DSCH carries through the HS-SCCH control channel.For indexation TBS, need the actual TBS size bitwise of definition in advance and the corresponding relation of TBS call number.In order to reduce the granularity that quantizes TBS, the actual corresponding bit number difference of TBS size in order to reduce by two adjacent call numbers is provided with different TBS forms to different HS-DSCH physical layer ability ratings among the HSDPA in other words.Described TBS form is exactly the TBS size of reality and the corresponding relation of TBS call number.
Along with High Speed Uplink Packet inserts (High Speed Uplink Packet Access; HSUPA) introducing; Be provided with the physical layer ability rating (E-DCH physical layer category) of different enhancing dedicated channels (E-DCH) equally, the value of E-DCH physical layer ability rating is 1-6.For the actual E-DCH TBS size of index, defined the corresponding relation between actual TBS transport block size and the TBS call number according to different E-DCH physical layer ability ratings equally equally.
Can know that by foregoing description the TBS form that E-DCH and HS-DSCH are corresponding respectively among HSUPA and the HSDPA is relevant with the UE ability rating.That is to say that for the UE with different ability ratings, UE and base station (Node B) all selects the corresponding TBS form of this UE ability rating, and realizes communicating between UE and the base station according to said TBS form.On the contrary, if the inconsistent words of TBS form that base station and UE adopt, can cause can't proper communication between UE and the base station.
At synchronous CDMA of time-division (Time Division-Synchronous Code Division Multiple Access; TD-SCDMA) in the system, UE has four kinds of states under connection status: CELL_DCH state, CELL_FACH state, CELL_PCH state and URA_PCH state.In order to improve the peak rate of transfer of data under CELL_FACH and the CELL-PCH state, E-DCH and HS-DSCH transmission mechanism have been introduced under CELL-FACH state and the CEL-PCH state.And reach an agreement in the system at present, as shown in Figure 1 when the base station through the process that the UE of user side data frame under the CELL-PCH state sends exclusive data, comprise the steps:
Step 101: the base station is through High-Speed Shared Control Channel (High-Speed Shared Control Channel; HS-SCCH) carry UE the HS-DSCH Radio Network Temporary Identifier (HS-DSCH Radio Network Temporary Identifier, H-RNTI) notice UE initiates synchronously;
Step 102:UE receives after the H-RNTI on the HS-SCCH, initiates the uplink random access procedure, carries the E-RUCCH Radio Network Temporary Identifier (E-RNTI) of UE through enhanced uplink random access channel (E-RUCCH);
Step 103: the base station detects through E-RUCCH after the E-RNTI of this UE, sends data to this UE.
Before the UE that is in the CELL_PCH state sent the HS-DSCH data, first-selection received the HS-DSCH Frame of user plane through Iub interface through HS-DSCH in the base station.At present, can only carry dedicated H-RNTI in the HS-DSCH user side data frame under the CELL_PCH state, can't carry E-RNTI, also can't carry UE ability rating information.Can cause the base station to send the HS-DSCH data to be in the CELL-PCH state UE like this.
Increase proposition in the level system (HSPA+) at HSPA, support the HSDPA operation through CELL_FACH, CELL_PCH and URA_PCH state, to improve the descending peak rate under the said state, described technology is referred to as CELL_FACH and strengthens.The CELL_FACH wild phase is for the difference of major technique characteristic under the CELL_DCH state: CELL_FACH does not exist Radio Link foundation, increase and reconfiguration course in strengthening on the Iub interface.If UE is in the CELL_FACH enhanced situation; The base station is before receiving UE actual HS-DSCH and E-DCH ability rating information; Need agreement UE and base station to use HS-DSCH and E-DCH ability rating information minimum or acquiescence; (Radio Network Control, when RNC) obtaining the ability rating information of UE reality, base station and UE use the time point of practical capacity grade to need alignment when radio network controller.At present under the CELL_FACH enhanced situation, do not have the setting of entry-into-force time dot information on the Iub interface, so just possibly bring and to realize the identical ability rating information of synchronous use between UE and the base station, thereby cause E-DCH and the HS-DSCH data can't normal delivery.
Summary of the invention
In view of this, the embodiment of the invention proposes a kind of method and system that makes the base station obtain the UE contextual information, can be to transfer to CELL_PCH or CELL_FACH state as UE after, and the base station can in time obtain the contextual information of UE.
The embodiment of the invention proposes a kind of method that makes the base station obtain the UE contextual information; The UE contextual information comprises HS-DSCH ability rating information and the E-DCH ability rating information of UE; The HS-DSCHH-RNTI of UE and E-RNTI, and the activationary time dot information that is used for indicating target CFN; This method comprises the steps:
The state that RNC detects UE shifts, and RNC sends the UE contextual information through the user face data frame of Iub interface to the base station;
The activationary time point that carry according to the user face data frame that receives the base station is updated to the UE contextual information that carries in the said user face data frame with the UE contextual information of self preserving.
Can find out that from above technical scheme RNC places the HS-DSCH Frame or the control frame of the CELL_PCH state of Iub interface to pass to the base station UE contextual informations such as E-RNTI information, HS-DSCH and E-DCH ability rating information at terminal.The invention solves in the HSPA+ system; After the terminal is transferred to the terminal and is transferred to CELL_PCH or CELL_FACH state from CELL_DCH from CELL_DCH; The base station can't obtain H-RNTI and E-RNTI corresponding relation; And the HS-DSCH ability rating information at terminal and E-DCH ability rating information, thereby cause follow-up problem that can't proper communication.And RNC transmits the activationary time dot information to the base station, can make the terminal use identical HS-DSCH and E-DCH ability rating with synchronization among base stations, guarantees the data normal delivery.
Description of drawings
Fig. 1 is that the flow chart of exclusive data is sent through the UE of user face data frame under the CELL-PCH state in the base station in the prior art;
Fig. 2 has proposed the transfer of data for HS-DSCH under the CELL_PCH state for the embodiment of the invention one, and the base station obtains the flow chart of UE contextual information;
Fig. 3 has proposed E-DCH and HS-DSCH transmission for the CELL_FACH enhanced situation for the embodiment of the invention two, and the base station obtains the contextual flow chart of UE.
Embodiment
The present invention proposes a kind of base station that makes and obtains the contextual system of UE; Comprise RNC and base station; Said RNC is used to generate the contextual information of UE; Said UE contextual information comprises HS-DSCH ability rating and the E-DCH ability rating information of UE, and the H-RNTI of UE and E-RNTI, and is used to the activationary time dot information of indicating said UE contextual information to come into force; RNC through its with the HS-DSCH Frame of the Iub interface of base station or control frame to base station transmission UE contextual information; The base station is used to receive said UE contextual information, and activates said UE contextual information in the moment of said activationary time dot information appointment.
For making the object of the invention, technical scheme and advantage clearer, the present invention is done further to set forth in detail below in conjunction with accompanying drawing.
The embodiment of the invention one has proposed the transfer of data for HS-DSCH under the CELL_PCH state, and the base station obtains the method for UE contextual information, and is as shown in Figure 2, comprises the steps:
Step 201:RNC through its with the user face data frame of the Iub interface of Node B or control frame to base station transmission UE context.
Said UE context carries HS-DSCH ability rating and the E-DCH ability rating information of H-RNTI, E-RNTI and the UE of UE.User plane protocol is that (frame protocol FP), comprises two types frame format, Frame and control frame to the FP agreement on the Iub interface.Preferably, said user face data frame or control frame are HS-DSCH data frame type 3 (HS-DSCH DATA FRAME TYPE 3), and said UE context is carried in the extension field of HS-DSCH DATA FRAME TYPE 3.Here HS-DSCH DATA FRAME TYPE3 that mentions and the following HS-DSCH DATA FRAME TYPE2 that will mention are a kind of Frames of Iub user plane.Wherein HS-DSCH DATA FRAME TYPE2 is the CELL_FACH status service; HS-DSCH DATA FRAME TYPE3 is the CELL_PCH status service.
For certain UE, if Serving RNC (Serving Radio Network Control, SRNC) and Drift Radio Network Controller (Drift Radio Network Control, when not being same entity DRNC), step 201 can realize through following two sub-steps:
Step 201a:SRNC passes to DRNC through the FP Frame on the Iur interface or control frame with HS-DSCH and the E-DCH ability rating information of UE.Said FP Frame or control frame are HS-DSCH data frame type 2 (HS-DSCH DATA FRAME TYPE 2).
Step 201b:DRNC generates the contextual information of UE, and said UE contextual information comprises E-RNTI and H-RNTI, and the HS-DSCH and the E-DCH ability rating information that are received from SRNC; And with said UE contextual information place on the Iub interface, the FP Frame or the control frame of CELL_PCH state, promptly send the base station among the HS-DSCH DATA FRAME TYPE 3 on the Iub interface.
Here need to prove that E-RNTI and H-RNTI are provided with by DRNC/CRNC, is the entity of DRNC for UE, for the base station then be control RNC (Controlling Radio Network Control, CRNC).
Step 202: the base station receives and preserves the contextual information of said UE.Specifically, the H-RNTI of described UE and the incidence relation of E-RNTI are preserved in the base station, and the HS-DSCH of UE and E-DCH ability rating information.
Preferably, (Connection Frame Number, CFN) moment corresponding activates said UE contextual information to the Connection Frame Number that carry in HS-DSCH DATA FRAME TYPE3 the base station.
The said method of present embodiment is equally applicable to the transmission in the E-DCH of CELL_FACH enhanced situation and HS-DSCH, and just wherein HS-DSCH DATA FRAME TYPE 3 need replace with HS-DSCH DATA FRAME TYPE 2.
The embodiment of the invention two has proposed for the E-DCH of CELL_FACH enhanced situation and HS-DSCH transmission, and the base station obtains the contextual method of UE, and is as shown in Figure 3, comprises the steps:
The state that step 301:RNC detects UE shifts; Owing to need the HS-DSCH that uses different under the different state with E-DCH ability rating information possibility; Then the contextual informations such as ability rating information of HS-DSCH and E-DCH need change; RNC sends the UE contextual information through the user face data frame (referring to HS-DSCH DATA FRAME TYPE 2 here) of Iub interface to the base station; Said UE contextual information carries HS-DSCH and the E-DCH ability rating information of this UE, and also carries activationary time point (Activation time) information in the said UE contextual information, and said activationary time dot information is used for indicating target CFN.
For certain UE, when SRNC and DRNC entity were not same entities, step 301 can realize through following two sub-steps:
Step 301a:SRNC passes to DRNC through the FP frame on the Iur interface (HS-DSCH DATA FRAME TYPE 2) with the HS-DSCH of UE and E-DCH ability rating information and activationary time dot information.
Step 301b:DRNC generates the contextual information of UE, and said UE contextual information comprises E-RNTI and H-RNTI, and the HS-DSCH and the E-DCH ability rating information that are received from SRNC; And with said contextual information place on the Iub interface, HS-DSCHFP frame (the HS-DSCH DATA FRAME TYPE 2 on the Iub interface) under the CELL_FACH state, send the base station to.
Here need to prove that E-RNTI and H-RNTI are provided with by DRNC/CRNC, is that DRNC is CRNC for the base station for UE.
Step 302: the activationary time that carry according to the FP frame that receives the base station UE contextual information of naming a person for a particular job is updated to the UE contextual information that carries in the said FP frame.Described UE contextual information comprises, the H-RNTI of UE and E-RNTI incidence relation, HS-DSCH and E-DCH ability rating information.That is to say, the base station at indicated activationary time point constantly, according to H-RNTI and the E-RNTI incidence relation of the UE that receives, and HS-DSCH and E-DCH ability rating information is carried out HS-DSSCH and E-DCH transmits.Described UE contextual information can further include Radio Resource control (Radio Resource Control, RRC) state information, the power-frequency information of UE, the Synchronization Status Message of UE, the DRX state information of UE etc. of UE.
The said method of present embodiment goes for the E-DCH and the HS-DSCH transmission of CELL_PCH enhanced situation equally.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. method that makes the base station obtain the user equipment (UE) contextual information; It is characterized in that; The UE contextual information comprises the high-speed downlink shared channel HS-DSCH ability rating information and enhancing dedicated channel E-DCH ability rating information of UE; The HS-DSCH Radio Network Temporary Identifier H-RNTI of UE and E-DCH Radio Network Temporary Identifier E-RNTI, and the activationary time dot information that is used for indicating target connection-frame number CFN; This method comprises the steps:
The state that RNC detects UE shifts, and RNC sends the UE contextual information through the user face data frame or the control frame of Iub interface to the base station;
The activationary time point that user face data frame that the base station basis receives or control frame carry is updated to the UE contextual information that carries in the said user face data frame with the UE contextual information of self preserving.
2. method according to claim 1 is characterized in that, said user face data frame or control frame are HS-DSCH data frame type 2.
3. method according to claim 1 and 2 is characterized in that, said RNC comprises to the step of base station transmission UE contextual information through the user face data frame or the control frame of Iub interface:
Serving RNC passes to Drift Radio Network Controller through the HS-DSCH data frame type 2 on the Iur interface with the HS-DSCH of UE and E-DCH ability rating information and activationary time dot information;
Drift Radio Network Controller generates the contextual information of UE, and said UE contextual information comprises E-RNTI and H-RNTI, is received from HS-DSCH and the E-DCH ability rating information and the activationary time dot information of Serving RNC; And place the HS-DSCH data frame type 2 on the Iub interface to send the base station to the said contextual information.
4. a system that makes the base station obtain the UE contextual information comprises RNC and base station, it is characterized in that,
Said RNC is used to generate the contextual information of UE; Said UE contextual information comprises the high-speed downlink shared channel HS-DSCH ability rating and enhancing dedicated channel E-DCH ability rating information of UE; And the HS-DSCH Radio Network Temporary Identifier H-RNTI of UE and E-DCH Radio Network Temporary Identifier E-RNTI, and be used to the activationary time dot information of indicating said UE contextual information to come into force; RNC through its with the HS-DSCH Frame of the Iub interface of base station or control frame to base station transmission UE contextual information;
The base station is used to receive said UE contextual information, and activates said UE contextual information in the moment of said activationary time dot information appointment.
5. system according to claim 4 is characterized in that, said activationary time dot information is a Connection Frame Number.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014146276A1 (en) * | 2013-03-21 | 2014-09-25 | 华为终端有限公司 | Data transmission method, base station, and user equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150079991A1 (en) * | 2011-09-12 | 2015-03-19 | Nokia Corporation | Method and apparatus for mobile terminal connected mode mobility |
| CN107666692B (en) * | 2016-07-29 | 2019-09-17 | 电信科学技术研究院 | A kind of state transition method, user terminal and base station |
| CN109392100B (en) * | 2017-08-04 | 2021-09-10 | 大唐移动通信设备有限公司 | Method, device and equipment for determining size of transmission block |
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| CN101330452A (en) * | 2007-06-19 | 2008-12-24 | 中兴通讯股份有限公司 | Method for indicating customer equipment capability under non-CELL_DCK state |
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| CN101330452A (en) * | 2007-06-19 | 2008-12-24 | 中兴通讯股份有限公司 | Method for indicating customer equipment capability under non-CELL_DCK state |
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| US9603162B2 (en) | 2013-03-21 | 2017-03-21 | Huawei Device Co., Ltd. | Data transmission method, base station, and user equipment using multiple transport block size tables |
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