Mobile terminal and its serving cell switching method
Technical field
The present invention relates to fields of communication technology, more particularly to a kind of mobile terminal and its serving cell switching method.
Background technique
Mobile terminal refers to that the computer equipment that can be used on the move, broad sense are said including mobile phone, notebook, put down
Plate computer, POS machine, vehicle-mounted computer etc..With the rapid development of integrated circuit technique, the processing capacity of mobile terminal has possessed
Powerful processing capacity, mobile terminal become an integrated information processing platform from simple call tool, this also gives
Mobile terminal increases more wide development space.
Multimedia broadcast multi-broadcasting business (Multimedia Broadcast Multicast Service, MBMS) is
Multimedia broadcasting and multicast function defined in 3GPPR6 is the foundation stone that mobile terminal carries out television services.MBMS supports multimedia
Multimedia video information both can directly be broadcasted to all users, can also be sent out by broadcasting service and multicast service both of which
The contracted user for giving one group of charge watches, operator can be helped to carry out multimedia advertising, free and pay-television channels, coloured silk
A variety of business applications such as letter mass-sending, so that operator can carry out mobile phone TV services with lower network lower deployment cost.
In the prior art, network side indicates that mobile terminal carries out serving cell according to the network measurements of mobile terminal
Switching.But mobile terminal may result in use when carrying out serving cell switching according to existing serving cell switching method
The MBMS business that family uses is interrupted, and accordingly, there exist MBMS business to provide ropy problem.
Summary of the invention
What the embodiment of the present invention solved is how to improve the offer quality of MBMS business, promotes the usage experience of user.
To solve the above problems, the embodiment of the invention provides a kind of serving cell switching method of mobile terminal, it is described
Method, comprising:
The signal quality of current area and neighboring community is measured;
The sequence successively decreased according to signal strength is ranked up current area and neighboring community to obtain first community measurement sequence
Column;
When detecting that mobile terminal is used MBMS business, and the cell non-described first for providing the MBMS business is small
In region measurement sequence when the cell of first sequence, judge to be greater than in the first community measurement sequence with the presence or absence of signal strength indication
The cell of preset threshold value and the offer MBMS business;
It is greater than the threshold value when determining there are signal strength indication in first community measurement sequence and the MBMS is provided
When the cell of business, the signal strength indication is greater than the threshold value and provides the cell of the MBMS business according to signal strength
The sequence successively decreased rearranges and obtains second community measurement sequence before the cell of first sequence;
Sequence generation measurement report is measured according to the second community and is sent to network side;
The cell indication message that the network side is generated according to the measurement report is received, and is cut according to the cell
It changes instruction information and switches to corresponding serving cell.
Optionally, described that the signal strength is greater than preset threshold value and provides the cell of the MBMS business according to letter
The sequence of number strength decrease is rearranged obtains second community measurement sequence before the cell of first sequence, comprising:
By by the signal strength indication be greater than preset threshold value and provide the MBMS business cell signal strength
The mode of the signal strength indication of the cell of value modification to more than first sequence, is greater than preset threshold for the signal strength indication
The sequence that the cell of the offer MBMS business of value is successively decreased according to signal strength, rearranges the cell in first sequence
Second community measurement sequence is obtained before.
Optionally, when determining that there is no signal strength indications to be greater than the threshold value and offer in first community measurement sequence
When the cell of the MBMS business, further includes: generate measurement report according to first community measurement sequence and be sent to network side.
The embodiment of the invention also provides a kind of mobile terminal, the mobile terminal includes:
Measuring unit measures the signal quality of current area and neighboring community;
First sequencing unit, the sequence suitable for successively decreasing according to signal strength are ranked up current area and neighboring community
Sequence is measured to first community;
Judging unit, when detecting that mobile terminal is used MBMS business, and the cell for providing the MBMS business is non-
In the first community measurement sequence when cell of first sequence, judge in the first community measurement sequence with the presence or absence of signal
Intensity value is greater than preset threshold value and provides the cell of the MBMS business;
Second sequencing unit, suitable for when there are signal strength indications to be greater than the threshold in the determining first community measurement sequence
When being worth and the cell of the MBMS business being provided, the signal strength indication is greater than the threshold value and the MBMS business is provided
The sequence that cell is successively decreased according to signal strength rearranges and obtains second community measurement sequence before the cell of first sequence
Column;
First measurement report generates transmission unit, is suitable for measuring sequence generation measurement report according to the second community concurrent
It send to network side;
Switch unit, the cell indication message generated suitable for receiving the network side according to the measurement report, and
Corresponding serving cell is switched to according to the cell indication message.
Optionally, second sequencing unit is suitable for by the way that the signal strength is greater than the threshold value and is provided described
The signal strength indication of the cell of MBMS business is modified to more than the mode of the signal strength indication of the cell of first sequence, by institute
The sequence that signal strength indication is successively decreased greater than the cell of the threshold value and the offer MBMS business according to signal strength is stated to arrange again
Second community measurement sequence is obtained before being listed in the cell of first sequence.
Optionally, the mobile terminal further include: the second measurement report generates transmission unit, is suitable for when determining current area
With when signal strength indication being not present in neighboring community being greater than the threshold value and the cell of the MBMS business be provided, according to described the
One cell measurement sequence generates measurement report and is sent to network side.
Compared with prior art, technical solution of the present invention has the advantage that
Above-mentioned scheme, by the way that the cell for providing MBMS business to be arranged in the forefront of measurement sequence and generates corresponding survey
Amount report allows network side to indicate that mobile terminal is resident according to the measurement report or switch to the small of offer MBMS business
Area, thus will not there is a situation where mobile terminals in the generation for receiving MBMS business failure, it is thus possible to improve MBMS business
Quality promotes the usage experience of user.
Detailed description of the invention
Fig. 1 is the flow chart of the serving cell switching method of one of embodiment of the present invention mobile terminal;
Fig. 2 is the structural schematic diagram of one of embodiment of the present invention mobile terminal.
Specific embodiment
In the prior art, when user using mobile terminal use MBMS business, and the signal strength of current area be less than its
When the signal quality of his neighbour cell, network side can indicate that mobile terminal switches to the preferable serving cell of signal quality,
And the serving cell switched to then may not provide MBMS business.
To solve the above-mentioned problems in the prior art, technical solution used in the embodiment of the present invention will be by that will provide
The cell of MBMS business is arranged in the forefront of measurement sequence and generates corresponding measurement report, allows network side according to described
Measurement report instruction mobile terminal is resident or switches to the cell of offer MBMS business, and the quality of MBMS business can be improved, mention
Rise the usage experience of user.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Fig. 1 shows the flow chart of the serving cell switching method of one of embodiment of the present invention mobile terminal.Such as Fig. 1
It is shown, may include:
Step S101: the signal quality of current area and neighboring community is measured.
In specific implementation, in user during position is mobile, mobile terminal from serving cell (refer to base station or
The coverage area of person base station) when being moved to another serving cell, also do not stop to change with the relative position of peripheral base station.
Wherein, in order to guarantee the channel quality during call, in order to keep not interrupting communication, mobile terminal needs constantly to small around
The quality of wireless channel in area measures, to carry out the switching of wireless channel.
Step S102: the sequence successively decreased according to signal strength is ranked up to obtain first small to current area and neighboring community
Region measurement sequence.
In specific implementation, at the end of measurement, mobile terminal can be according to the signal strength (signal of the cell detected
Quality) from being ranked up to obtain first community measurement sequence to surrounding (around mobile terminal) cell to weak sequence by force.Example
Such as, the first community measurement sequence that mobile terminal is obtained according to measurement result is A1, A2, A3, A4 ... An, wherein A1, A2, A3,
A4 to An respectively indicates respective service cell identifier.
Step S103: when detecting that mobile terminal is used MBMS business, and the cell for providing the MBMS business is non-
In the first community measurement sequence when cell of first sequence, judge in the first community measurement sequence with the presence or absence of signal
Intensity value is greater than preset threshold value and the cell of the offer MBMS business can execute step when the judgment result is yes
S105;Conversely, can then execute step S104.
In specific implementation, it when detecting that specific MBMS business is used in mobile terminal, can determine mobile whole
The resident current area in end provides the MBMS business, and whether other serving cells provide the MBMS business, Ke Yitong
Cross the system information block (System of reading broadcast control channel (Broadcast Control Channel, BCCH) transmission
Information Block, SIB) it 15 is determined.
It, can be by first community when there is the cell that the MBMS business is provided in getting first community measurement sequence
The signal strength for the cell for providing the MBMS business in measurement sequence is compared with preset threshold value, to determine first community
It is greater than preset threshold value with the presence or absence of signal strength in measurement sequence and the MBMS that mobile terminal is being currently used is provided
The serving cell of business.Wherein, preset threshold value can be configured according to the actual needs, can be with as long as meeting mobile terminal
The MBMS business being being currently used glibly using mobile terminal, the present invention is it is not limited here.
Step S104: measurement report is generated according to first community measurement sequence and is sent to network side.
In specific implementation, when providing the signal strength of cell of the MBMS business less than preset threshold value, by nothing
Method ensures that the MBMS business can be normally used in mobile terminal, and mobile terminal is continued to reside in current area or switching
Also become meaningless to other cells for providing the MBMS business.At this point it is possible to raw according to first community measurement sequence
At measurement report and it is sent to network side, it is preferably small to make mobile terminal switch to signal quality in subsequent steps
Area.
Step S105: the signal strength indication is greater than preset threshold value and provides the cell of the MBMS business according to letter
The sequence of number strength decrease rearranges and obtains second community measurement sequence before the cell of first sequence.
In specific implementation, when providing the signal strength of cell of MBMS business greater than preset threshold value, mobile terminal
When switching to other cells from current area, it will may insure that mobile terminal can continue that the MBMS business is normally used,
Therefore, in order to prevent in subsequent steps, mobile terminal, which switches to, does not provide the cell of the MBMS business, and to move
Terminal is currently interrupted in the MBMS business currently in use, and putting in order for the cell in sequence can be measured first community
It is adjusted, is arranged in forefront so that providing the MBMS business and signal strength indication and being greater than the cell of preset threshold value.
In the present invention one is implemented, the MBMS business is provided and signal is strong when determining in first community measurement sequence to exist
When angle value is greater than the cell of the threshold value, the MBMS business can be provided by modification and signal strength indication is greater than the threshold value
Cell signal strength mode provide the MBMS business and signal strength indication is greater than the threshold value so that modified
The signal strength of cell is greater than the signal strength indication of the cell for the sequence that makes number one in first community measurement sequence.Later,
It measures the cell in sequence to first community according still further to the sequence that signal strength is successively decreased to resequence, so that providing institute
It states MBMS business and signal strength indication is arranged in forefront greater than the cell of the threshold value and obtains second community measurement sequence.
It is to be herein pointed out when the SIB15 message by inquiry BCCH transmission determines that first community measures in sequence
There is no when the cell of the offer MBMS business in addition to current area, if the signal strength of current area be greater than it is preset
When threshold value, the signal strength indication of current area can be only modified, is allowed to be greater than in first community measurement sequence positioned at first sequence
Cell signal strength indication, then, to first community measurement sequence in cell successively decrease again according to signal strength it is suitable
In the second community sequence that sequence arranges, current area will be arranged in first sequence.
Step S106: sequence generation measurement report is measured according to the second community and is sent to network side.
In specific implementation, when obtaining second community measurement sequence, mobile terminal will measure sequence according to second community
Corresponding measurement report is organized, and the measurement report is sent to network side.
The radio network controller (RNC) of network side is when receiving the measurement report of mobile terminal transmission, triggering activation
And more new technological process, signal quality is pre-configured more than the preset Target cell for reporting thresholding, and will be described prewired
Confidence breath is sent to mobile terminal.Meanwhile RNC notifies Target cell to send cell handover command to mobile terminal.Target cell
In the order for receiving RNC, cell switch indicating information is sent to mobile terminal.
Step S107: receiving the cell indication message that the network side is generated according to the measurement report, and according to
The cell indication message switches to corresponding serving cell.
In specific implementation, when mobile terminal receives the cell indication message of network side (Target cell) transmission
When, reconfiguration operation is carried out, switches to Target cell from current area.But when the only current area in second community sequence
When providing the MBMS business and signal strength indication and being greater than the threshold value, mobile terminal continues to reside in current area, and
Other cells will not be switched to.
Switching below in conjunction with Fig. 2 and specific embodiment, to the serving cell of the mobile terminal in the embodiment of the present invention
The corresponding device of method is further described in detail.
Fig. 2 shows the structural schematic diagrams of one of embodiment of the present invention mobile terminal.Mobile terminal as shown in Figure 2
200, it may include measuring unit 201, the first sequencing unit 202, judging unit 203, the measurement of the second sequencing unit 204, first
Report generation transmission unit 205 and switch unit 206, in which:
Measuring unit 201 measures the signal quality of current area and neighboring community.
First sequencing unit 202, the sequence suitable for successively decreasing according to signal strength arrange current area and neighboring community
Sequence obtains first community measurement sequence.
Judging unit 203 when detecting that mobile terminal is used MBMS business, and provides the cell of the MBMS business
In the non-first community measurement sequence when cell of first sequence, judge in the first community measurement sequence with the presence or absence of letter
Number intensity value is greater than preset threshold value and provides the cell of the MBMS business.
Second sequencing unit 204, suitable for when there are signal strength indications to be greater than institute in the determining first community measurement sequence
When stating threshold value and the cell of the MBMS business being provided, the signal strength indication is greater than the threshold value and the MBMS industry is provided
The sequence that the cell of business is successively decreased according to signal strength rearranges and obtains second community survey before the cell of first sequence
Measure sequence.
In specific implementation, second sequencing unit 204 is suitable for by the way that the signal strength indication is greater than the threshold value
And provide the signal strength indication of the signal strength indication modification of the cell of the MBMS business to more than the cell of first sequence
Mode, the signal strength indication is greater than the threshold value and provides what the cell of the MBMS business was successively decreased according to signal strength
Sequentially, it rearranges and obtains second community measurement sequence before the cell of first sequence.
First measurement report generates transmission unit 205 and is suitable for measuring sequence generation measurement report according to the second community simultaneously
It is sent to network side;
Switch unit 206, the cell indication message generated suitable for receiving the network side according to the measurement report,
And corresponding serving cell is switched to according to the cell indication message.
In specific implementation, when determining that there is no signal strength indications to be greater than the threshold value in first community measurement sequence
The offer MBMS business cell when, as shown in Fig. 2, the mobile terminal 200 in the embodiment of the present invention can also include the
Two measurement reports generate transmission unit 207, in which:
Second measurement report generates transmission unit 207, is suitable for when there is no signal is strong in first community measurement sequence
When angle value is greater than the threshold value and provides the cell of the MBMS business, measurement report is generated according to first community measurement sequence
Announcement is sent to network side.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, and storage is situated between
Matter may include: ROM, RAM, disk or CD etc..
The method and system of the embodiment of the present invention are had been described in detail above, the present invention is not limited thereto.Any
Field technical staff can make various changes or modifications without departing from the spirit and scope of the present invention, therefore guarantor of the invention
Shield range should be defined by the scope defined by the claims..