CN105578535A - Cell hard handover processing system, cell hard handover processing method and mobile terminal - Google Patents
Cell hard handover processing system, cell hard handover processing method and mobile terminal Download PDFInfo
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Abstract
The invention discloses a cell hard handover processing system, a cell hard handover processing method and a mobile terminal, and belongs to the technical field of cell handover. The system comprises a first judgment unit, a first configuration unit, a second judgment unit, a second configuration unit and a third configuration unit. The method comprises the following steps: starting a hard handover; judging the type of the hard handover according to the timing indication of a target cell; if the hard handover is a synchronous hard handover, performing channel configuration according to the existing connection frame number of the target cell; if the hard handover is an asynchronous hard handover, making further judgment; if there is no currently-used system function associated with the connection frame number, configuring an access channel; and if there is a currently-used system function associated with the connection frame number, performing multiple preset pre-configurations on the access channel, and normally configuring the access channel. The technical scheme has the following beneficial effects: advance channel configuration is performed on a system function not associated with CFN, the processing speed of hard handover is increased, and the processing performance is improved.
Description
Technical Field
The present invention relates to the field of cell handover technologies, and in particular, to a cell hard handover processing system and method, and a mobile terminal.
Background
Cell handover refers to channel switching that is required to maintain uninterrupted communication for a mobile user when a mobile terminal moves from one cell to another in a wireless communication system. In the prior art, cell handover can be divided into soft handover and hard handover. The soft handover is to maintain the connection of the old cell during handover, and disconnect the connection of the old cell until the connection of the new cell is stable; hard handover refers to disconnecting an old cell before switching to a new cell.
In the prior art, for hard handover, especially for inter-frequency hard handover, it is necessary to calculate connection frame number information (CFN) of a cell by using system frame number information (SFN) of the cell, and perform related configuration on a channel of a target cell according to the calculated (or stored) CFN of the target cell. However, in the prior art, it is often encountered that the target cell to which the handover is performed does not store corresponding SFN information, so that the SFN information needs to be re-acquired and the corresponding CFN information needs to be re-calculated, so that the channel of the target cell can be configured. The above process configuration efficiency is low, so that the processing speed of the cell hard handover is reduced, and the processing performance of the cell hard handover is reduced.
Disclosure of Invention
According to the problems in the prior art, a cell hard handover processing system and method and a mobile terminal technical scheme are provided, aiming at accelerating the handover processing speed and improving the handover performance under the condition that the SFN of a target cell is not obtained initially;
the technical scheme specifically comprises the following steps:
a cell hard handoff processing system suitable for a mobile terminal, comprising:
a first judging unit, configured to, when the mobile terminal performs a hard handover process, judge a type of the hard handover according to a time message cell received by the mobile terminal, and output a corresponding first judgment result;
a first configuration unit, connected to the first determination unit, configured to perform normal configuration on an access channel according to a connection frame number of a target cell to which the mobile terminal is currently switched when the first determination result indicates that the mobile terminal is currently in synchronous hard handover according to the first determination result;
a second judging unit, connected to the first judging unit, the second judging unit being configured to judge whether there is a system function associated with a connection frame number in use in the hard handover process when the mobile terminal is currently in asynchronous hard handover according to the first judging result, and output a corresponding second judging result;
a second configuration unit, connected to the second determination unit, configured to perform multiple preset pre-configurations on the access channel according to the second determination result when the system function associated with the connection frame number is currently used in the hard handover process, and then obtain the system frame number of the target cell to perform normal configuration on the access channel;
and a third configuration unit, connected to the second determination unit, configured to perform normal configuration on the access channel according to the second determination result when there is no system function associated with the connection frame number in use in the hard handover process.
Preferably, in the system for processing cell hard handover, the second configuration unit includes:
a configuration module, configured to perform the pre-configuration on the access channel;
the judging module is connected with the configuration module and used for judging whether the corresponding system frame number is stored in the target cell or not and outputting a corresponding third judgment result;
a first obtaining module, connected to the determining module, configured to configure a common channel of the target cell when the corresponding system frame number is not stored in the target cell according to the third determination result, and obtain the system frame number corresponding to the target cell from the common channel of the target cell;
a second obtaining module, connected to the determining module, configured to obtain the stored system frame number when the corresponding system frame number is stored in the target cell according to the third determination result;
a calculating module, connected to the first obtaining module and the second obtaining module, respectively, for calculating and updating the connection frame number of the target cell according to the obtained system frame number;
and the second configuration unit performs normal configuration on the access channel according to the connection frame number obtained by calculation.
Preferably, the system for processing cell hard handover further includes:
a third determining unit, respectively connected to the first configuring unit, the second configuring unit, and the third configuring unit, configured to determine whether a corresponding system frame number is stored in the target cell after all configurations of the access channel are completed, and output a corresponding fourth determination result;
and a frame number obtaining unit, connected to the third judging unit, configured to configure the common channel of the target cell when the corresponding system frame number is not stored in the target cell according to the fourth judging result, and read the system frame number of the target cell from the common channel.
Preferably, in the system for processing cell hard handover, the pre-configuring the access channel by a plurality of presets includes performing synchronization configuration on the channel, performing post-verification process configuration on the channel, and performing power control pre-positioning on the channel.
Preferably, in the system for processing hard handover of a cell, the calculation module calculates the connection frame number of the target cell according to the following formula:
y＝[x-(DOFFdiv38400)]mod256；
wherein,
y represents the connection frame number of the target cell;
x represents the system frame number of the target cell;
DOFF represents a default physical channel offset value for the target cell;
div represents the integer divide operation;
mod denotes the remainder operation.
Preferably, the cell hard handover processing system is applicable to a WCDMA communication system.
A cell hard switching processing method is suitable for a mobile terminal; wherein, include:
step S1, hard switching is carried out, and channel configuration is carried out aiming at the hard switching process;
step S2, judging the type of the hard switching according to the time information element of the target cell:
if the hard handover is a synchronous hard handover, performing normal configuration on an access channel according to the existing connection frame number of the target cell, and then turning to step S6;
if the hard handover is asynchronous, go to step S3;
step S3, judging whether there is system function related to the connection frame number in use;
if the system function associated with the connection frame number does not exist, go to step S5;
step S4, pre-configuring the access channel, performing other normal configurations on the access channel, and then turning to step S6;
step S5, the access channel is configured normally, and the step S6 is carried out;
step S6, the channel configuration for the hard handover is ended, and the process exits.
Preferably, in the method for processing cell hard handover, the step S4 specifically includes:
step S41, performing a plurality of preset pre-configurations on the access channel;
step S42, judging whether the corresponding system frame number exists in the target cell;
if the system frame number exists in the target cell, reading the system frame number, and then turning to step S44;
step S43, configuring the common channel of the target cell to obtain the system frame number of the target cell through the common channel;
step S44, calculating and updating the connection frame number of the target cell according to the acquired system frame number;
step S45, configuring the access channel normally according to the updated connection frame number, and then going to step S6.
Preferably, the cell hard handover processing method, wherein the pre-configuring the access channel by a plurality of presets includes performing synchronization configuration on the channel, performing post-verification process configuration on the channel, and performing power control pre-positioning on the channel.
Preferably, in the cell hard handover processing method, in step S44, the connection frame number of the target cell is calculated according to the obtained system frame number and the following formula:
y＝[x-(DOFFdiv38400)]mod256；
wherein,
y represents the connection frame number of the target cell;
x represents the system frame number of the target cell;
DOFF represents a default physical channel offset value for the target cell;
div represents the integer divide operation;
mod denotes the remainder operation.
Preferably, in the cell hard handover processing method, in step S6, after ending the channel allocation for the hard handover, the following steps are first performed:
step S61, determining whether the corresponding system frame number already exists in the target cell:
if the corresponding system frame number exists in the target cell, exiting;
step S62, configuring the common channel of the target cell;
step S63, acquiring the sfn of the target cell through the configured common channel, and then exiting.
Preferably, the cell hard handover processing method is applied to a WCDMA communication system.
A mobile terminal comprises the cell hard handoff processing system.
A mobile terminal, wherein, the above-mentioned cell hard handover processing method is adopted.
The beneficial effects of the above technical scheme are: the access channel is pre-configured according to the system function which is not related to the CFN, the processing speed of the hard switching is accelerated, and the processing performance of the hard switching is improved.
Drawings
FIG. 1 is a block diagram of a system for handling a hard handover in a cell according to a preferred embodiment of the present invention;
fig. 2-4 are flow charts illustrating a method for handling a hard handover in a cell according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In the prior art, when performing cell hard handover, a mobile terminal often needs to acquire SFN information of a target cell, and calculate a CFN of the target cell according to the SFN, and then configure a channel of the target cell according to the obtained CFN, or directly configure a channel of the target cell according to an existing CFN of the target cell.
In the prior art, when a mobile terminal is handed over to a target cell, corresponding SFN information may not be stored in the target cell, and at this time, the mobile terminal needs to first read SFN related information, then calculate a CFN, and finally start channel configuration. However, when the system function currently used by the system does not depend on the CFN information, the access channel is configured without depending on the CFN information, that is, without being associated with the CFN information, but in the prior art, the channel configuration still needs to be performed after the SFN-CFN is acquired, which prolongs the processing speed of the hard handover, and reduces the processing efficiency and the processing performance of the hard handover.
In view of the foregoing problems, a preferred embodiment of the present invention provides a cell hard handover processing system, which specifically includes:
a first judging unit 1. In the preferred embodiment of the present invention, after the mobile terminal is handed over to a target cell, the hard handover is configured, and first, the first determining unit 1 is adopted to determine the current handover type.
In a preferred embodiment of the present invention, the current handoff types may include synchronous hard handoffs and asynchronous hard handoffs. The synchronous hard handover, that is, the hard handover timing is kept unchanged, means that all radio links existing in the current target cell are activated, and then a new radio link is established under the condition of keeping the uplink transmission timing and the CFN; the asynchronous hard handover, that is, the hard handover timing is initialized again, means that all the radio links existing in the current target cell are activated, and then the radio link having the new uplink transmission timing and CFN is re-established according to the SFN of the target cell. In short, for synchronized hard handover, the CFN in the target cell is sustainable; for asynchronous hard handover, the CFN of the target cell needs to be recalculated and determined according to the corresponding SFN. In the preferred embodiment of the present invention, the synchronized hard handoff is triggered only if the system has previously learned the SFN of the target cell.
In a preferred embodiment of the present invention, the first determining unit 1 determines whether the current hard handover is a synchronous hard handover or an asynchronous hard handover according to a time message cell issued by the system. In the preferred embodiment of the present invention, the so-called time message cell, i.e. timing indication, has two results for its determination: initialize and Maintain. When the timing indication is judged as Initialize, the hard switching at the moment is asynchronous; when the timing indication is judged as Maintain, it indicates that the hard handover is synchronous at this time.
In a preferred embodiment of the present invention, the first determining unit 1 outputs a corresponding first determining result through determination.
In a preferred embodiment of the present invention, the cell hard handover processing system further includes:
the first configuration unit 2 is connected to the first determination unit 1. In a preferred embodiment of the present invention, the first configuration unit 2 is configured to configure the current access channel according to the existing CFN information of the current target cell when the mobile terminal is currently in the synchronous hard handover according to the first determination result. In the preferred embodiment of the present invention, since the current in-sync hard handover process can be obtained according to the time message cell, the current existence of SFN can be confirmed, and the CFN information stored in the current target cell can be used. The first configuration unit 2 configures the current access channel according to the CFN information that has been currently saved. In the preferred embodiment of the present invention, the first configuration unit 2 completes all hard handover configuration operations that need to be performed during the synchronous hard handover.
In a preferred embodiment of the present invention, the cell hard handover processing system further includes:
the second judgment means 3 is connected to the first judgment means 2. In a preferred embodiment of the present invention, the second determining unit 3 performs subsequent determination according to the first determination result when the mobile terminal is currently in the asynchronous hard handover process.
In a preferred embodiment of the present invention, the second determining unit 3 determines whether there is a system function associated with the CFN information in the currently used system functions, i.e. whether there is a system function associated with the CFN information currently being used.
In a preferred embodiment of the present invention, the second determining unit 3 outputs a corresponding second determining result through determination.
In a preferred embodiment of the present invention, the cell hard handover processing system further includes:
and a second arranging unit 4 connected to the second judging unit. In a preferred embodiment of the present invention, the second configuration unit 4 is activated when there is a system function associated with CFN information currently in use according to the second determination result. Further, in a preferred embodiment of the present invention, the second configuration unit 4 includes:
the module 41 is configured. In a preferred embodiment of the present invention, the configuration module 41 is configured to perform a plurality of preset pre-configurations on the access channel.
In a preferred embodiment of the present invention, the plurality of preset pre-configurations are pre-processes performed on the access channel for the currently used system function, and the pre-processes do not require the premise of obtaining the CFN information, that is, when the currently used system function is not related to the CFN information, the access channel can still be pre-configured without paying attention to the CFN information. For example: channel synchronization, namely, performing synchronization processing on an access channel; post-verification process handling (PVP), and power control preamble (powercontrol preamble). In the preferred embodiment of the present invention, when the access channel is pre-configured as described above, no CFN information is needed, so the access channel can be pre-configured as described above before the system acquires the SFN information and calculates the CFN information.
In a preferred embodiment of the present invention, the second configuration unit 4 further includes:
and a judging module 42 connected to the configuration module 41. In a preferred embodiment of the present invention, the determining module 42 is configured to determine whether the current target cell has the corresponding SFN information, and output a corresponding third determination result.
The first obtaining module 43 is connected to the determining module 42. In a preferred embodiment of the present invention, the first obtaining module 43 obtains and outputs corresponding SFN information from the system when the corresponding SFN information does not exist in the current target cell according to the third determination result;
specifically, in a preferred embodiment of the present invention, the process of the first obtaining module 43 obtaining the SFN information includes: first, the first obtaining module 43 configures a common channel of the target cell, for example, configures a Primary Common Control Physical Channel (PCCPCH) of the target cell; subsequently, the first obtaining module 43 obtains the SFN information sent by the system through the configured common channel (e.g. PCCPCH).
In a preferred embodiment of the present invention, the second configuration unit 4 further includes:
and a second obtaining module 44 connected to the determining module 42. In a preferred embodiment of the present invention, the second obtaining module 44 directly reads and outputs the corresponding SFN information when the corresponding SFN information exists in the current target cell according to the third determination result;
and a calculating module 45 respectively connected to the first obtaining module 43 and the second obtaining module 44. In a preferred embodiment of the present invention, the calculating module 45 is configured to calculate and obtain corresponding CFN information according to the SFN information output by the first obtaining module 43 or the second obtaining module 44. In a preferred embodiment of the present invention, the calculation process is based on the following formula:
y＝[x-(DOFFdiv38400)]mod256；(1)
wherein,
y represents a connection frame number of the target cell;
x represents the system frame number of the target cell;
DOFF represents a default physical channel offset value for the target cell;
div represents the integer divide operation;
mod denotes the remainder operation.
In a preferred embodiment of the present invention, the above formula is applied to a Frequency Division Duplex (FDD) communication system.
In the preferred embodiment of the present invention, the process of calculating the CFN information through the SFN information described herein can be applied to the above formula (1), and is not described herein again.
In a preferred embodiment of the present invention, the calculating module 45 calculates and obtains corresponding CFN information according to the SFN information, and updates the CFN information in the target cell according to the calculated CFN information.
In a preferred embodiment of the present invention, after the pre-configuring is performed on the access channel, the second configuring unit 4 continues to perform other normal configurations on the access channel according to the current CFN information obtained by calculation and updating.
In the preferred embodiment of the present invention, the process of performing other normal configuration on the access channel by the second configuration unit 4 is similar to the prior art, that is, obtaining the SFN information, calculating the CFN information, and finally performing corresponding configuration and processing on the access channel according to the CFN information. Therefore, the above procedure for performing other configuration (depending on the CFN information) on the access channel is not described herein.
In the preferred embodiment of the present invention, the process of pre-configuring the access channel in the second configuration unit 4 and the process of performing other normal configurations on the access channel may be in sequence, or may be processed in parallel, that is, while the access channel is pre-configured, the process of performing other normal configurations on the access channel (obtaining SFN information, calculating CFN information, performing channel configuration) is started.
In a preferred embodiment of the present invention, the cell hard handover processing system further includes:
and a third arranging means 5 connected to the second judging means 3. In a preferred embodiment of the present invention, the third configuration unit 5 is configured to be activated when there is no system function associated with CFN information currently in use according to the second determination result, and is configured to perform normal configuration on the access channel.
In a preferred embodiment of the present invention, according to the second determination result, if there is no system function associated with the CFN information currently in use, no CFN information is required to be involved in processing the access channel. Therefore, in the preferred embodiment of the present invention, in the above case, the channel can be directly accessed for all normal configurations without acquiring the SFN and calculating the CFN in advance.
In summary, the invention aims to: the system function is divided into the system function associated with CFN and the system function not associated with CFN, when the mobile terminal is judged to be in the asynchronous hard switching process, whether the system function associated with CFN is currently used or not is judged, and the access channel is configured differently according to different judgment results:
1) if no system function related to the CFN is currently used, the access channel is normally configured without waiting for obtaining the SFN and processing after calculating the CFN;
2) if the system function associated with the CFN is currently used, a plurality of preset pre-configurations are carried out on the access channel, then the CFN is calculated according to the SFN, and other normal configurations are carried out on the access channel according to the CFN. In a preferred embodiment of the present invention, the plurality of preset pre-configurations, i.e. the preset channel configurations not associated with the CFN, are the channel configurations associated with the CFN except the preset pre-configurations.
In a preferred embodiment of the present invention, in the case of the above (2), the process of performing multiple preset pre-configurations on the access channel and the process of performing other normal configurations on the access channel may be performed in parallel, for example, the access channel is pre-processed while starting other normal processes on the access channel (including obtaining SFN, calculating CFN, configuring channels according to CFN, and the like).
In a preferred embodiment of the present invention, as still shown in fig. 1, the cell hard handover processing system further includes:
and a third judging unit 6 connected to the first arranging unit 2, the second arranging unit 4 and the third arranging unit 5, respectively. In a preferred embodiment of the present invention, the second determining unit 6 performs corresponding determination after the three configuring units complete channel configuration. Specifically, in a preferred embodiment of the present invention, the second determining unit 6 performs subsequent determination after the first configuring unit 2 completes configuration, or after the second configuring unit 4 completes configuration, or after the third configuring unit 5 completes configuration.
In a preferred embodiment of the present invention, the third determining unit 6 is configured to determine whether the current target cell has the corresponding SFN information, and output a corresponding fourth determination result.
In a preferred embodiment of the present invention, the cell hard handover processing system further includes:
and a frame number obtaining unit 7 connected to the third judging unit 6. In a preferred embodiment of the present invention, the frame number obtaining unit 7 performs subsequent processing according to the fourth determination result. Further, in a preferred embodiment of the present invention, when the current target cell does not store the corresponding SFN information, the frame number obtaining unit 7 configures a common channel (PCCPCH) of the target cell, receives SFN information of the target cell issued by the system through the configured channel, and completes the whole process of configuring hard handover.
In a preferred embodiment of the present invention, when the fourth determination result indicates that the current target cell stores the corresponding SFN information, the whole configuration hard handover process is directly completed.
In a preferred embodiment of the present invention, the cell hard handover processing system is applicable to a WCDMA communication system.
In a preferred embodiment of the present invention, as shown in fig. 2, a method for processing cell hard handover based on the above-mentioned cell hard handover processing system is provided, which is suitable for a mobile terminal, and specifically includes the steps of:
step S1, hard switching is carried out, and channel configuration is carried out aiming at the hard switching process;
in the preferred embodiment of the present invention, the following channel configurations all occur on the basis of having connected to a target cell through hard handover.
Step S2, judging the type of the hard switch according to the time information element of the target cell:
if the hard handover is a synchronous hard handover, performing normal configuration on the access channel according to the existing connection frame number of the target cell, and then turning to step S6;
if the hard handover is asynchronous, go to step S3;
in the preferred embodiment of the present invention, the type of the hard handover is first determined by the time message cell.
In the preferred embodiment of the present invention, the so-called time message information element, i.e., timing indication, is used. If the timing indication is judged to be initialization, the hard handover is considered to be asynchronous hard handover; if the timing indication is judged to be Maintain, the hard handover is considered to be synchronous hard handover.
Step S3, judging whether there is system function related to the connection frame number in use;
if there is no system function associated with the connection frame number in use, go to step S5;
step S4, performing a plurality of preset pre-configurations on the access channel, performing other normal configurations on the access channel, and then turning to step S6;
step S5, normally configuring the access channel, and going to step S6;
in the preferred embodiment of the present invention, during the asynchronous hard handoff process, it is further determined whether there is a currently used system function associated with the CFN:
if there is no system function associated with the CFN in use, the access channel can be configured normally without knowing the CFN (without paying attention to whether the CFN is acquired);
if there is a system function associated with the CFN currently in use, a plurality of preset pre-configurations may be performed on the access channel, that is, a channel configuration not associated with the CFN is extracted for processing, and the rest channel configurations wait for acquiring the SFN and calculate the corresponding CFN before processing.
In a preferred embodiment of the present invention, the process of pre-configuring the access channel and the process of performing other normal configurations on the access channel may be performed in parallel, that is, while the access channel is pre-configured, the process of acquiring the SFN and calculating the CFN may be started, and then the process of processing the remaining channel configurations according to the CFN may be performed.
Step S6, the channel configuration for the hard handover is ended, and the process exits.
In a preferred embodiment of the present invention, as shown in fig. 3, the step S4 specifically includes:
step S41, the access channel carries out a plurality of preset pre-configurations;
step S42, judging whether there is corresponding system frame number in the target cell;
if the system frame number exists in the target cell, reading the system frame number, and then turning to the step S44;
step S43, configuring the common channel of the target cell to obtain the system frame number of the target cell through the common channel;
step S44, calculating and updating the connection frame number of the target cell according to the acquired system frame number;
step S45, configuring the access channel normally according to the updated connection frame number, and then go to step S6.
In a preferred embodiment of the present invention, as shown in fig. 4, after the channel configuration for the hard handover is finished in step S6, the following steps are first performed:
step S61, determining whether the corresponding system frame number is already stored in the target cell:
if the corresponding system frame number exists in the target cell, exiting;
step S62, configuring the common channel of the target cell;
and step S63, acquiring the system frame number of the target cell through the configured common channel, and then exiting.
In a preferred embodiment of the present invention, the cell hard handover processing method is applicable to a WCDMA communication system.
In a preferred embodiment of the present invention, a mobile terminal is further provided, which includes the above-mentioned cell hard handover processing system.
In a preferred embodiment of the present invention, a mobile terminal is further provided, wherein the above-mentioned cell hard handover processing method is adopted.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (14)
1. A system for handling a hard handoff of a cell, adapted for use with a mobile terminal, comprising:
a first judging unit, configured to, when the mobile terminal performs a hard handover process, judge a type of the hard handover according to a time message cell received by the mobile terminal, and output a corresponding first judgment result;
a first configuration unit, connected to the first determination unit, configured to perform normal configuration on an access channel according to a connection frame number of a target cell to which the mobile terminal is currently switched when the first determination result indicates that the mobile terminal is currently in synchronous hard handover according to the first determination result;
a second judging unit, connected to the first judging unit, the second judging unit being configured to judge whether there is a system function associated with a connection frame number in use in the hard handover process when the mobile terminal is currently in asynchronous hard handover according to the first judging result, and output a corresponding second judging result;
a second configuration unit, connected to the second determination unit, configured to perform multiple preset pre-configurations on the access channel according to the second determination result when the system function associated with the connection frame number is currently used in the hard handover process, and then obtain the system frame number of the target cell to perform normal configuration on the access channel;
and a third configuration unit, connected to the second determination unit, configured to perform normal configuration on the access channel according to the second determination result when there is no system function associated with the connection frame number in use in the hard handover process.
2. The system for handling hard handoff of a cell according to claim 1, wherein said second configuration unit comprises:
a configuration module, configured to perform the pre-configuration on the access channel;
the judging module is connected with the configuration module and used for judging whether the corresponding system frame number is stored in the target cell or not and outputting a corresponding third judgment result;
a first obtaining module, connected to the determining module, configured to configure a common channel of the target cell when the corresponding system frame number is not stored in the target cell according to the third determination result, and obtain the system frame number corresponding to the target cell from the common channel of the target cell;
a second obtaining module, connected to the determining module, configured to obtain the stored system frame number when the corresponding system frame number is stored in the target cell according to the third determination result;
a calculating module, connected to the first obtaining module and the second obtaining module, respectively, for calculating and updating the connection frame number of the target cell according to the obtained system frame number;
and the second configuration unit performs normal configuration on the access channel according to the connection frame number obtained by calculation.
3. The cell hard handoff processing system of claim 1 further comprising:
a third determining unit, respectively connected to the first configuring unit, the second configuring unit, and the third configuring unit, configured to determine whether a corresponding system frame number is stored in the target cell after all configurations of the access channel are completed, and output a corresponding fourth determination result;
and a frame number obtaining unit, connected to the third judging unit, configured to configure the common channel of the target cell when the corresponding system frame number is not stored in the target cell according to the fourth judging result, and read the system frame number of the target cell from the common channel.
4. The system of claim 1, wherein the pre-configuring of the access channel with a plurality of presets comprises configuring a channel synchronously, performing a post-verification procedure configuration of a channel, and performing a power control preamble of a channel.
5. The system of claim 2, wherein the calculation module calculates the connection frame number of the target cell according to the following formula:
y＝[x-(DOFFdiv38400)]mod256；
wherein,
y represents the connection frame number of the target cell;
x represents the system frame number of the target cell;
DOFF represents a default physical channel offset value for the target cell;
div represents the integer divide operation;
mod denotes the remainder operation.
6. The system of claim 1, adapted for use in a WCDMA communication system.
7. A cell hard switching processing method is suitable for a mobile terminal; it is characterized by comprising:
step S1, hard switching is carried out, and channel configuration is carried out aiming at the hard switching process;
step S2, judging the type of the hard switching according to the time information element of the target cell:
if the hard handover is a synchronous hard handover, performing normal configuration on an access channel according to the existing connection frame number of the target cell, and then turning to step S6;
if the hard handover is asynchronous, go to step S3;
step S3, judging whether there is system function related to the connection frame number in use;
if the system function associated with the connection frame number does not exist, go to step S5;
step S4, pre-configuring the access channel, performing other normal configurations on the access channel, and then turning to step S6;
step S5, the access channel is configured normally, and the step S6 is carried out;
step S6, the channel configuration for the hard handover is ended, and the process exits.
8. The method for processing cell hard handover according to claim 7, wherein the step S4 specifically includes:
step S41, performing a plurality of preset pre-configurations on the access channel;
step S42, judging whether the corresponding system frame number exists in the target cell;
if the system frame number exists in the target cell, reading the system frame number, and then turning to step S44;
step S43, configuring the common channel of the target cell to obtain the system frame number of the target cell through the common channel;
step S44, calculating and updating the connection frame number of the target cell according to the acquired system frame number;
step S45, configuring the access channel normally according to the updated connection frame number, and then going to step S6.
9. The method of claim 8, wherein the pre-configuring the access channel with a plurality of presets comprises configuring a channel synchronously, performing a post-verification procedure configuration of the channel, and performing a power control preamble of the channel.
10. The method of claim 8, wherein in step S44, the connection frame number of the target cell is calculated according to the obtained system frame number according to the following formula:
y＝[x-(DOFFdiv38400)]mod256；
wherein,
y represents the connection frame number of the target cell;
x represents the system frame number of the target cell;
DOFF represents a default physical channel offset value for the target cell;
div represents the integer divide operation;
mod denotes the remainder operation.
11. The method for processing cell hard handoff according to claim 7, wherein in step S6, after ending the channel configuration for the hard handoff, the following steps are first performed:
step S61, determining whether the corresponding system frame number already exists in the target cell:
if the corresponding system frame number exists in the target cell, exiting;
step S62, configuring the common channel of the target cell;
step S63, acquiring the sfn of the target cell through the configured common channel, and then exiting.
12. The method of claim 7, adapted for use in a WCDMA communication system.
13. A mobile terminal comprising the cell hard handover handling system of claims 1-6.
14. A mobile terminal, characterized in that the cell hard handover handling method according to claims 7-12 is employed.
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