Summary of the invention
The technical problem that the present invention will solve provides a kind of terminal and carries out method, terminal and the multimode communication system that intermode switches, and can reduce the communication middle-end time of terminal when the intermode direct-cut operation.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme following:
On the one hand, provide a kind of terminal to carry out the method that intermode switches, comprising:
The terminal receives switching command from first base station, said switching command is that said terminal is switched to the instruction of second base station in preset switching time from said first base station, and the communication mode of said second base station is different with the communication mode of said first base station;
After receiving said switching command, before the said preset switching time; Said terminal utilizes its first antenna collection and first baseband processing unit; Maintenance is communicated by letter with said first base station, and said terminal is configured its second antenna collection and second baseband processing unit;
Said terminal is in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station.
Said terminal receives before the step of switching command from first base station, and said method also comprises:
Said terminal utilizes the first antenna collection and the second antenna collection and first baseband processing unit at said terminal, communicates with said first base station;
Before the step that said terminal is configured its second antenna collection and second baseband processing unit, said method also comprises:
Said terminal discharges the said second antenna collection.
Said terminal comprises the step that its second antenna collection and second baseband processing unit are configured:
Second baseband processing unit at the said terminal of said starting terminal;
Said terminal switches to the said second antenna collection pattern and the frequency range of said second base station;
Said terminal makes up the radio-frequency channel from the said second antenna collection to said second base station;
Said terminal utilizes said second base station of the said second antenna set pair to catch;
Said terminal utilizes said radio-frequency channel and said second base station to carry out synchronously.
Said terminal is in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication; And stop after the step of communicating by letter of the said first antenna collection and said first baseband processing unit and said first base station, said method also comprises:
Whether said terminal judges is switched successful;
If handover success then discharges said first antenna collection and said first baseband processing unit.
Said terminal judges switches whether successful step is specially:
Whether the said terminal of said terminal judges receives said second signal of base station.
On the other hand, a kind of terminal is provided, comprises:
Receiving element; Be used for reception switching command from first base station; Said switching command is that said terminal is switched to the instruction of second base station in preset switching time from said first base station, and the communication mode of said second base station is different with the communication mode of said first base station;
The first antenna collection and first baseband processing unit are used for after receiving said switching command, before the said preset switching time, and maintenance is communicated by letter with said first base station;
Dispensing unit is used for after receiving said switching command, before the said preset switching time, and the second antenna collection and second baseband processing unit at said terminal is configured;
Switch unit; Be used in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station.
Said terminal also comprises:
Judging unit is used for judging whether switching is successful;
Releasing unit is used for when handover success, discharges said first antenna collection and said first baseband processing unit.
Said dispensing unit comprises:
Start unit is used to start second baseband processing unit at said terminal;
Switch unit is used for the said second antenna collection is switched to the pattern and the frequency range of said second base station;
Construction unit is used to make up the radio-frequency channel from the said second antenna collection to said second base station;
Capturing unit is used to utilize said second base station of the said second antenna set pair to catch;
Lock unit is used to utilize said radio-frequency channel and said second base station to carry out synchronously.
On the other hand, a kind of multimode communication system is provided, comprises: terminal, first base station and second base station; Said terminal comprises:
Receiving element; Be used for reception switching command from first base station; Said switching command is that said terminal is switched to the instruction of second base station in preset switching time from said first base station, and the communication mode of said second base station is different with the communication mode of said first base station;
The first antenna collection and first baseband processing unit are used for after receiving said switching command, before the said preset switching time, and maintenance is communicated by letter with said first base station;
Dispensing unit is used for after receiving said switching command, before the said preset switching time, and the second antenna collection and second baseband processing unit at terminal is configured;
Switch unit; Be used in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station.
Said terminal also comprises:
Judging unit is used for judging whether switching is successful;
Releasing unit is used for when handover success, discharges said first antenna collection and said first baseband processing unit.
Embodiments of the invention have following beneficial effect:
In the such scheme; Before after receiving switching command, switching; Multi-antenna terminal is configured second antenna collection of said multi-antenna terminal and second baseband processing unit of said multi-antenna terminal, accomplishes the preparation that communicates between said multi-antenna terminal and said second base station; In said preset switching time, said multi-antenna terminal utilizes said second antenna collection and said second baseband processing unit, begins to communicate by letter with said second base station.Therefore, can shorten the communicating interrupt time of prior art terminal when the intermode direct-cut operation.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
There is the problem of communicating interrupt in embodiments of the invention to terminal in the prior art when the intermode direct-cut operation, provide a kind of terminal to carry out method, terminal and multimode communication system that intermode switches.
As shown in Figure 1, carry out the method that intermode switches for a kind of terminal of the present invention, comprising:
Step 101; The terminal receives switching command from first base station; Said switching command is that said terminal is switched to the instruction of second base station in preset switching time from said first base station, and the communication mode of said second base station is different with the communication mode of said first base station.
Step 102, after receiving said switching command, before the said preset switching time, said terminal utilizes its first antenna collection and first baseband processing unit, and maintenance is communicated by letter with said first base station.
Step 103, after receiving said switching command, before the said preset switching time, said terminal is configured its second antenna collection and second baseband processing unit; Accomplish the preparation that communicates between said terminal and said second base station.Wherein step 102 and step 103 are parallel processing.
Step 104; Said terminal is in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station.
Terminal of the present invention comprises a plurality of antennas, and the said first antenna collection comprises at least one antenna, and the said second antenna collection comprises at least one antenna, and the antenna of the said first antenna collection is different with the antenna of the said second antenna collection.When the said second antenna collection comprised at least two antennas, the said second antenna collection can adopt the receive diversity mode of many antennas, the invention is not restricted to this.
Terminal of the present invention is a multi-antenna terminal, and is multimode terminal, supports the communication mode of first base station and the communication mode of second base station.The wireless communication mode of multi-antenna terminal includes, but are not limited to GSM (Global System for Mobile Communications among the present invention; Global system for mobile communications), CDMA2000 (Code Division Multiple Access; CDMA mobile telecommunication), WCDMA (Wideband CDMA; Wideband CDMA), HSPA (High Speed Packet Access; The high-speed packet access), CDMA 2000 1xEV-DO (CDMA2000 1x evolution (stage of a paths of 3G (Third Generation) Moblie technology)), TD-SCDMA (Time Division-Synchronous CDMA; The time-division synchronization CDMA), LTE (Long Term Evolution, Long Term Evolution), Wi-MAX (WorldInteroperability for Microwave Access, World Interoperability for Microwave Access, WiMax).Intermode of the present invention switches can be the switching between above-mentioned any two kinds of wireless communication modes, and is not limited thereto.
In the such scheme; Before after receiving switching command, switching; Multi-antenna terminal is configured second antenna collection of said multi-antenna terminal and second baseband processing unit of said multi-antenna terminal, accomplishes the preparation that communicates between said multi-antenna terminal and said second base station; In said preset switching time, said multi-antenna terminal utilizes said second antenna collection and said second baseband processing unit, begins to communicate by letter with said second base station.Therefore, can shorten the communicating interrupt time of prior art when the intermode direct-cut operation.
As shown in Figure 2, carry out the method that intermode switches for a kind of terminal of the present invention, comprising:
Step 201, said terminal are utilized the first antenna collection and the second antenna collection and first baseband processing unit at said terminal, communicate with said first base station.
Step 202; The terminal receives switching command from first base station; Said switching command is that said terminal is switched to the instruction of second base station in preset switching time from said first base station, and the communication mode of said second base station is different with the communication mode of said first base station.
Step 203, after receiving said switching command, before the said preset switching time, said terminal utilizes its first antenna collection and first baseband processing unit, and maintenance is communicated by letter with said first base station.
Step 204, after receiving said switching command, before the said preset switching time, said terminal discharges the said second antenna collection.
Step 205, after discharging the said second antenna collection, said terminal is configured its second antenna collection and second baseband processing unit, and this step 205 can comprise: second baseband processing unit at the said terminal of said starting terminal; Said terminal switches to the said second antenna collection pattern and the frequency range of said second base station; Said terminal makes up the radio-frequency channel from the said second antenna collection to said second base station; Said terminal utilizes said second base station of the said second antenna set pair to catch; Said terminal utilizes said radio-frequency channel and said second base station to carry out synchronously.Wherein, be parallel processing between step 203 and step 204 and the step 205.
Step 206; Said terminal is in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station.
Whether step 207, said terminal judges are switched successful; Said terminal judges switches whether successful step is specially: whether the said terminal of said terminal judges receives said second signal of base station.It will be understood by those skilled in the art that and to judge with additive method whether switching is successful.
Step 208 is if handover success then discharges said first antenna collection and said first baseband processing unit.
Can find out that from the foregoing description if in initial condition, said terminal utilizes the first antenna collection and the second antenna collection and first baseband processing unit at said terminal, communicates with said first base station; Then the terminal needs to discharge earlier the second antenna collection, so that in the flow, the second antenna collection and second base station communicate after receiving switching command.
If in initial condition, said terminal utilizes its first antenna collection and first baseband processing unit, communicates with said first base station; Then the terminal does not need to discharge earlier the second antenna collection after receiving switching command.
Among the present invention; The said first antenna collection comprises at least one antenna; The said second antenna collection comprises at least one antenna; When the said second antenna collection comprised at least two antennas, the said second antenna collection can adopt the receive diversity mode and said second base station communication of many antennas, the invention is not restricted to this.The antenna of the said second antenna collection is different with the antenna of the said first antenna collection; First baseband processing unit is different with the second baseband processing unit unit, and the radio-frequency channel from the said first antenna collection to said first base station is with different to the radio-frequency channel of said second base station from the said second antenna collection.Radio-frequency channel from the said second antenna collection to said second base station and from the said first antenna collection to separate the radio-frequency channel of said first base station.
The wireless communication mode of multi-antenna terminal includes, but are not limited to GSM, CDMA2000, WCDMA, HSPA, CDMA 2000 1xEV-DO, TD-SCDMA, LTE, Wi-MAX among the present invention.Intermode of the present invention switches can be the switching between above-mentioned any two kinds of wireless communication modes, and is not limited thereto.
In the such scheme, multi-antenna terminal comprises a plurality of antennas, and supports a plurality of wireless modes.The terminal have can parallel processing the multimode baseband processing resource, can carry out the reception of a pattern and the reception preparation of another pattern simultaneously, comprise measurement, tracking, channel estimating etc.If multimode realizes it being ASIC (Application Specific Integrated Circuits, application-specific integrated circuit (ASIC)) the realization stack of different mode, UE (User Equipment, user terminal) can utilize these resource concurrent workings; If it is the mode with the soft configuration of shared resource platform (SDR) that multimode realizes, UE can adopt the form of part configuration, and only configuration needs to support the least resource of direct-cut operation preparation to accomplish the concurrent working of two patterns.
Switching preparation among the present invention program; Not only can reduce the inevitable communicating interrupt time in the conventional hard handover scheme; And owing in advance follow the tracks of with channel estimating for the Serving cell of second base station etc.; Serving cell wireless receiving for needing the second stable base station of certain hour ability is very helpful, and can make that the switching of intermode is more stable.Scheme of the present invention makes full use of the resource of multi-antenna terminal, makes direct-cut operation more abundant to the preparation of the Serving cell of second base station.Not only can reduce the communicating interrupt time that is directed against the single antenna hard handover scheme in the prior art, and it is stable to increase the reception of switching the new connection in back, can have the user experience effect that is similar to soft handover so that the direct-cut operation between multimode is more stable.
Below carry out the direct-cut operation from LTE to WCDMA with dual-antenna terminal application scenarios be example, the method that dual-antenna terminal of the present invention carries out the intermode direct-cut operation is described.
Described dual-antenna terminal has antenna A, the B of two equities, can receive the radiofrequency signal of LTE, also can receive the radiofrequency signal of WCDMA, and has the baseband processing resource of parallel processing LTE and two kinds of standard baseband signals of WCDMA simultaneously.
As shown in Figure 3, said method comprises:
Step 301, in initial condition, dual-antenna terminal perhaps utilizes antenna A and antenna B to carry out communication with the mode and the LTE base station S of receive diversity (RxD) through antenna A simultaneously.LTE base station S sends instruction lets UE switch to WCDMA base station D in a certain moment in future.In this step, the intermode direct-cut operation is initiated by system base-station control, and prior notice UE prepares to switch to new wireless standard target BS from former wireless standard base station.
Step 302, after UE received instruction, certain hour began to carry out the switching preparation in advance before switching instant.Pre-set time is relevant with the time of WCDMA communication with UE foundation itself, is decided in its sole discretion by UE.UE will adopt mode that single antenna receives to keep the communication with base station S with antenna A.Open the baseband processing resource of WCDMA, and antenna B is adjusted to the signal of accepting target BS D, and the signal that receives is handled by the WCDMA baseband processing resource, the search of accomplishing before formally receiving waits work synchronously.In this step, after dual-antenna terminal is received the instruction of intermode direct-cut operation, dual-antenna terminal with intermode direct-cut operation time of system agreement before, beginning preparation.On the one hand, utilize an antenna of dual-antenna terminal to keep the communication with former base station.On the other hand, the wireless standard base band of opening the target BS of dual-antenna terminal receives resource, and utilizes the idle antenna B that gets off to switch to the pattern and the frequency range of target BS; Constitute one and receive complete independent, the radio-frequency channel of from the radio-frequency antenna to the base band, receive handling resource that can walk abreast, the Serving cell of target BS is caught with synchronously, carry out the preparations such as configuration that receive signal with former base station.
Step 303, in the switching time of agreement, UE utilizes the reception antenna B of ready work to begin to communicate by letter with target BS D with baseband processing resource.In this step, with switching time of system agreement, dual-antenna terminal stops to communicate by letter with former base station through antenna A, utilizes the antenna B that has set up to the reception of new standard baseband processing resource completion to the target BS signal; Accomplish direct-cut operation.
Step 304, dual-antenna terminal discharge the baseband processing resource of antenna A and former LTE after confirming to switch completion smoothly.
When the needs intermode switches; The signal of the Serving cell of former base station should be very weak; Therefore can not be in MIMO (multiple input multiple output; A kind of use surpasses the wireless technology that an antenna transmits and receive the two or more independent data streams in the same channel) state, therefore under most scenes, do not exist with the necessity that all many antennas are kept in communication.If the terminal is under the receive diversity state, reduce the number of the used antenna of receive diversity in advance, communication quality has the decline of short time, but can reduce the communicating interrupt time short when intermode switches in the prior art.
As shown in Figure 4, be a kind of terminal 40 of the present invention, comprising:
Receiving element 401; Be used for reception switching command from first base station; Said switching command is that said terminal is switched to the instruction of second base station in preset switching time from said first base station, and the communication mode of said second base station is different with the communication mode of said first base station;
The first antenna collection and first baseband processing unit 402 are used for after receiving said switching command, before the said preset switching time, and maintenance is communicated by letter with said first base station;
Dispensing unit 403 is used for after receiving said switching command, before the said preset switching time, and the second antenna collection and second baseband processing unit at terminal is configured; To accomplish the preparation that communicates between said multi-antenna terminal and said second base station;
Switch unit 404; Be used in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit with said second base station communication, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station.
In the such scheme; Before after receiving switching command, switching; Multi-antenna terminal is configured second antenna collection of said multi-antenna terminal and second baseband processing unit of said multi-antenna terminal, accomplishes the preparation that communicates between said multi-antenna terminal and said second base station; In said preset switching time, said multi-antenna terminal utilizes said second antenna collection and said second baseband processing unit, begins to communicate by letter with said second base station.Therefore, can shorten the communicating interrupt time of prior art terminal when the intermode direct-cut operation.
As shown in Figure 5, said dispensing unit 403 comprises:
Start unit 4031 is used to start second baseband processing unit at said terminal;
Switch unit 4032 is used for the said second antenna collection is switched to the pattern and the frequency range of said second base station;
Construction unit 4033 is used to make up the radio-frequency channel from the said second antenna collection to said second base station;
Capturing unit 4034 is used to utilize said second base station of the said second antenna set pair to catch;
Lock unit 4035 is used to utilize said radio-frequency channel and said second base station to carry out synchronously.
As shown in Figure 6, said terminal 40 also comprises:
Judging unit 405 is used for judging whether switching is successful; Specifically can for: judging unit 405 judges whether said terminal receives said second signal of base station.
Releasing unit 406 is used for when handover success, discharges said first antenna collection and said first baseband processing unit.
As shown in Figure 7, a kind of multimode communication system 10 for shown in the present comprises: terminal 40, first base station 50 and second base station 60;
Said terminal 40 comprises:
Receiving element 401; Be used for receiving switching command from first base station 50; Said switching command is that said terminal 40 is switched to the instruction of second base station 60 in preset switching time from said first base station 50, and the communication mode of said second base station 60 is different with the communication mode of said first base station 50;
The first antenna collection and first baseband processing unit 402 are used for after receiving said switching command, before the said preset switching time, and maintenance is communicated by letter with said first base station 50;
Dispensing unit 403 is used for after receiving said switching command, before the said preset switching time, and the second antenna collection and second baseband processing unit at said terminal 40 is configured; To accomplish the preparation that communicates between said multi-antenna terminal 40 and said second base station 60;
Switch unit 404; Be used in said preset switching time; Switch to the said second antenna collection that configures and said second baseband processing unit communicating by letter, and stop to communicate by letter of the said first antenna collection and said first baseband processing unit and said first base station 50 with said second base station 60.
Said terminal 40 also comprises:
Judging unit 405 is used for judging whether switching is successful; Specifically can for: judging unit 405 judges whether said terminal 40 receives the signal of said second base station 60.
Releasing unit 406 is used for when handover success, discharges said first antenna collection and said first baseband processing unit.
In the such scheme; Before after receiving switching command, switching; Multi-antenna terminal is configured second antenna collection of said multi-antenna terminal and second baseband processing unit of said multi-antenna terminal, accomplishes the preparation that communicates between said multi-antenna terminal and said second base station; In said preset switching time, said multi-antenna terminal utilizes said second antenna collection and said second baseband processing unit, begins to communicate by letter with said second base station.Therefore, can shorten the communicating interrupt time of prior art terminal when the intermode direct-cut operation.
The present invention can be applied in the multi-antenna wireless communicating terminal, need not carry out any modification to system base-station and agreement.Multi-antenna terminal of the present invention is supported antenna diversity reception mode or MIMO communication modes.The subclass that has at least one or several antennas to constitute in a plurality of reception antennas at terminal can be carried out the wireless receiving of several patterns that multimode terminal supports.
Said method embodiment is corresponding with said device embodiment; The description of relevant portion gets final product among the part comparable device embodiment that in method embodiment, does not describe in detail, and the description of relevant portion gets final product among the part reference method embodiment that in device embodiment, does not describe in detail.
One of ordinary skill in the art will appreciate that; Realize that all or part of step in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium, and this program comprises the step like above-mentioned method embodiment when carrying out; Described storage medium; As: magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
In each method embodiment of the present invention; The sequence number of said each step can not be used to limit the sequencing of each step; For those of ordinary skills, under the prerequisite of not paying creative work property, the priority of each step is changed also within protection scope of the present invention.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle according to the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.