CN107105473A - A kind of method and terminal of selection cell - Google Patents
A kind of method and terminal of selection cell Download PDFInfo
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- CN107105473A CN107105473A CN201610101536.1A CN201610101536A CN107105473A CN 107105473 A CN107105473 A CN 107105473A CN 201610101536 A CN201610101536 A CN 201610101536A CN 107105473 A CN107105473 A CN 107105473A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
Abstract
The embodiment of the invention discloses a kind of method and terminal of selection cell.Methods described includes：Read cell broadcast messages；Reading in the cell broadcast messages has the specific identifier position and offset parameter, then identifies the cell for LTE Advanced cells；According to the offset parameter, the LTE Advanced cells to mark carry out priority ranking；The forward LTE Advanced cells of priority ranking are selected to set up connection.Technical solution of the present invention can realize support 4G+ networks terminal can according to LTE Advanced native region priorities order preferably with the LTE Advanced cells set up be connected, with reach resource using maximize and Consumer's Experience optimization.
Description
Technical field：
The present invention relates to field of wireless communication, a kind of method and terminal of selection cell are related generally to.
Background technology：
According to 36.212 agreements, when terminal is in RRC_CONNECTED states, identified whether by the Carrier Indicator of the 3bit in DCI as CA (4G+) business；According to the definition of the agreements of 3G PP TS 36.331, when mobile phone is in RRC_IDLE states, mobile phone is can not to know CA (4G+) ability of current area or adjacent cell, and mobile phone can be recognized when carrying out specific business except non-user.Especially when terminal is in multiple cells, some cells support 4G+, when some cells do not support 4G+, current terminal can not preferably be set up with 4G+ networks and be connected automatically, for example when 4G+ cell signal is slightly below 4G cell signals, either 4G cell phone or 4G+ mobile phone tend to selection registration 4G cells, and such 4G+ mobile phone can not just play 4G+ advantage rapidly, it is necessary to could enjoy 4G+ service by the cell for being switched to 4G+ again.
The content of the invention：
The embodiment provides it is a kind of select cell method and terminal, with solve current support 4G+ networks mentioned above terminal can not priority of registration, gravity treatment are switched to LTE Advanced cells automatically the problem of.
The embodiments of the invention provide a kind of method for selecting cell, applied to terminal, including：
Read cell broadcast messages；
Reading in the cell broadcast messages has the specific identifier position and offset parameter, then identifies the cell for LTE Advanced cells；
According to the offset parameter, the LTE Advanced cells to mark carry out priority ranking；
The forward LTE Advanced cells of priority ranking are selected to set up connection.
Another embodiment of the present invention provides a kind of terminal of selection cell, including：Message reception module, judging module and radio receiving transmitting module；Wherein,
The message reception module, for reading cell broadcast messages；And,
There are the specific identifier position and offset parameter for reading in the cell broadcast messages, then identify the cell for LTE Advanced cells；
The judging module, for according to the offset parameter, the LTE Advanced cells to mark to carry out priority ranking；
The radio receiving transmitting module, for selecting the forward LTE Advanced cells of priority ranking to set up connection.
Another embodiment of the present invention provides a kind of method for selecting cell, including：
Cell base station broadcasts the message, and wherein has specific identifier position and offset parameter in LTE Advanced cell base stations broadcast message；
Terminal reads cell broadcast messages；Wherein, reading in broadcast message has the specific identifier position and offset parameter, then the cell for identifying the reading is LTE Advanced cells；
According to the offset parameter of the LTE Advanced cells read, the cell that the terminal-pair is read carries out priority ranking；
The forward LTE Advanced cells of the terminal selection priority ranking set up connection.
The method and terminal for the selection cell that the embodiment of the present invention is provided, can be according to the specific identifier position of the LTE Advanced cells in the broadcast message of reading and offset parameter, identify the LTE Advanced cells read and determine the priority ranking of the LTE Advanced cells, support the 4G+ network terminals be connected according to automatic preferably set up with the LTE Advanced cells of the forward order of LTE Advanced native region priorities to realize, with reach resource using maximize and Consumer's Experience optimization.
Brief description of the drawings：
Accompanying drawing is used for providing further understanding technical solution of the present invention, and constitutes a part for specification, is provided commonly for explaining technical scheme with embodiments herein, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the flow chart of selection minilocus approach in the embodiment of the present invention.
Fig. 2 is the flow chart of starting up of terminal selection registration LTE Advanced minilocus approach in another embodiment of the present invention.
Fig. 3 is the schematic diagram of terminal gravity treatment switching LTE Advanced minilocus approach in another embodiment of the present invention.
Fig. 4 is the schematic diagram of terminal in another embodiment of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, embodiments of the invention are described in detail below in conjunction with accompanying drawing.It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Fig. 1 is the flow chart of selection minilocus approach in the embodiment of the present invention, as shown in figure 1, present invention method includes：
Step 001, reading cell broadcast messages；Wherein, there are specific identifier position and offset parameter in the broadcast message of LTE Advanced cells；
Step 002, read in the cell broadcast messages and have specific identifier position and offset parameter, then identify the cell for LTE Advanced cells；Specially：
Read the SIB1 broadcast messages of each broadcast cell；
Reading in SIB1 broadcast messages has 4g_plus_supported flag bits and Offset_4g_plus offset parameters, then the cell of the mark broadcast SIB1 broadcast messages is LTE Advanced cells.
Step 003, according to the offset parameter, the LTE Advanced cells to mark carry out priority ranking；
The forward LTE Advanced cells of step 004, selection priority ranking set up connection.
Wherein, terminal described in the embodiment of the present invention is can to support the terminal of 4G+ network services, you can the terminal of wireless connection is set up with the LTE Advanced cells.
The specific embodiment of LTE Advanced minilocus approach is selected to deploy to elaborate clearly to introduce technical solution of the present invention, when being now specifically in RRC_CONNECTED states and RRC_IDLE states respectively with terminal：
Fig. 2 is the method for starting up of terminal selection registration cell in the embodiment of the present invention, the flow chart that minilocus approach is selected when terminal is in RRC_CONNECTED states is that is to say, as shown in Fig. 2 the embodiment of the present invention includes：
Step 100, starting up of terminal；
Step 101, terminal, which are performed, looks for net action to search some alternative frequencies；
Step 102, the SIB1 broadcast messages for reading each candidate cell；Wherein, each candidate cell includes the mixed cell that 4G cells, 4G+ cells are the LTE Advanced cells or 4G cells and 4G+ cells.Wherein, special sign position 4g_plus_supported and offset parameter Offset_4g_plus is embedded into the LTE Advanced cells SIB1 broadcast messages, wherein the design such as following table table 1 of the SIB1 broadcast messages for being embedded into the special sign position and offset parameter：
Table 1：SIB1 design examples
Whether step 103, mark are LTE Advanced cells；Specially：The special sign position 4g_plus_supported and offset parameter Offset_4g_plus for whether thering is the SIB1 of the LTE Advanced to broadcast the message in the SIB1 broadcast messages for judging each candidate cell of the reading.Idiographic flow is：
If there is the special sign position 4g_plus_supported and offset parameter Offset_4g_plus in the SIB1 broadcast messages read, the cell for then having the SIB1 broadcast messages of the flag bit and offset parameter described in mark broadcast is LTE Advanced cells (it is LTE Advanced cells that Y shown in Fig. 2, which represents the cell), and enters step 104：
Offset parameter Offset_4g_plus in the SIB1 broadcast messages for the LTE Advanced cells that step 104, basis are read carries out priority ranking to the LTE Advanced cells；Wherein, the priority ranking formula is the correction formula after being modified using amount of bias Q4g_plus caused by the offset parameter Offset_4g_plus to the S criterion formulas in the structures of 3G PP TS 36.331：
S4g_plus=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
- Pcompensation+Q4g_plus (formula 1)
Wherein, each parameter explains as follows in the formula 1：The S4g_plusThe signal quality of the LTE Advanced cells, the Q are received for terminalrxlevmeasFor the signal power strength of current area (being in the present embodiment the LTE Advanced cells), the QrxlevminFor the minimum access signal power strength of current area, the QrxlevminoffsetTo search cell signal deviant during higher priority network when the cell that current terminal is stationed is roaming network, the Pcompensation is terminal transmission power back-off, and the Q4g_plus is signal quality amount of bias caused by the offset parameter Offset_4g_plus.
If there is no the special sign position 4g_plus_supported and offset parameter Offset_4g_plus in the SIB1 broadcast messages read, the cell read is non-LTE Advanced cells (it is non-LTE Advanced cells that N shown in Fig. 2, which represents the cell), and enters step 105：
Step 105, according to 3G PP TS 36.304 generic way calculate 4G cells selection rule value, i.e.,：
Srxlev=Qrxlevmeas-(Qrxlevmin
+ Qrxlevminoffset)-Pcompensation (formula 2)
Wherein, Srxlev described in the formula 2 is the signal quality that terminal receives cell.
Step 106, selection are registered to priority ranking most forward cell.Concretely comprise the following steps, by the S of LTE Advanced cells described above4g_plusIt is compared with the Srxlev of the non-LTE Advanced cells；If the S4g_plusMore than or equal to the Srxlev, i.e. described LTE Advanced native region priorities sequence is most forward, it be optimal to illustrate signal quality that terminal receives the LTE Advanced cell signals, and the terminal selects to be registered to the priority ranking most forward LTE Advanced cells；If conversely, the S4g_plusLess than the Srxlev, then the terminal selection is registered to the cell of the priority ranking most forward non-LTE Advanced cells.
Step 107, registration is completed.
Fig. 3 is the flow chart that LTE Advanced minilocus approach is selected when terminal gravity treatment switches to LTE Advanced minilocus approach, namely terminal for RRC_IDLE states in the embodiment of the present invention, as shown in figure 3, the embodiment of the present invention includes：
Step 200, terminal are performed with frequency or iso-frequency adjacent community measurement；Specially terminal enters RRC_IDLE states execution adjacent cell signal from RRC_CONNECTED states；
Step 201, terminal read the SIB1 broadcast messages of adjacent cell；
Step 202, identify whether as LTE Advanced cells；Specially, broadcast the message according to the SIB1 of the adjacent cell of the reading and identify whether the adjacent cell read is LTE Advanced cells, wherein being embedded into special sign position 4g_plus_supported and offset parameter Offset_4g_plus in the SIB1 broadcast messages of the LTE Advanced cells.If the adjacent cell is LTE Advanced cells, into step 203；If the adjacent cell is non-LTE Advanced cells, into step 204.
Step 203, determine whether co-frequency cell, i.e., described terminal judges that the adjacent cell and the main plot currently registered are co-frequency cell or alien-frequency district according to the measurement action performed to the adjacent cell.
In embodiments of the present invention, if the adjacent cell LTE Advanced cells are to enter with the main plot：
Step 205：Read the offset parameter Offset_4g_plus_intra in the SIB4 broadcast messages of the adjacent cell LTE Advanced cells；Wherein described offset parameter Offset_4g_plus_intra is the certain bias parameter being embedded into the SIB4 of the LTE Advanced cells, the design such as following table table 2 of the SIB4 broadcast messages for being embedded into the certain bias parameter：
Table 2：SIB4 design examples
Step 206, according to the offset parameter Offset_4g_plus_intra, priority ranking is carried out to the LTE Advanced cells；Wherein, the priority ranking formula is the correction formula after being modified using amount of bias Q4g_plus_intra caused by the offset parameter Offset_4g_plus_intra to the R criterion formulas in the structures of 3G PP TS 36.331：
RS=Qmeas,s+ Qhysts formula 3
Rn=Qmeas,n-Qoffset+Q4g_plus_intra
Wherein, R described in the formula 3sFor main plot (current camping cell) gravity treatment grade point, the RnFor the adjacent cell (treating re-selecting cell) gravity treatment grade point, the Qmeas , sFor main cell signal power, the Qmeas , nFor the signal power of the adjacent cell, the QhystsFor main cell signal quality correction value, the Qoffset is the adjacent cell signal quality bias, and the Q4g_plus_intra is the signal quality amount of bias caused by the offset parameter Offset_4g_plus_intra.
Step 209, gravity treatment to the most forward adjacent cell that sorts；Detailed process is：If Rn ＞ Rs, the terminal gravity treatment is connected to LTE Advanced cells described in adjacent cell.
In an alternative embodiment of the invention, if the adjacent cell LTE Advanced cells are alien-frequency district with the main plot, enter：
Step 207：Read the offset parameter Offset_4g_plus_inter in the SIB5 broadcast messages of the adjacent cell LTE Advanced cells；Wherein, the Offset_4g_plus_inter is the certain bias parameter being embedded into the SIB5 of the LTE Advanced cells, the design such as following table table 3 of the SIB5 broadcast messages for being embedded into the certain bias parameter：
Table 3：SIB5 design examples
Step 208, according to the offset parameter Offset_4g_plus_inter, priority ranking is carried out to the adjacent cell LTE Advanced cells；Wherein, the priority ranking formula is the correction formula after being modified using amount of bias Q4g_plus_inter caused by the offset parameter Offset_4g_plus_inter to the S criterion formulas in the structures of 3G PP TS 36.331：
SServing=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
Sneighbor=Qrelevmeas-(Qrxlevmin+Qrxlevminoffset)
+Q4g_plus_inter
Formula 4
Wherein, Sserving described in the formula 4 is the signal quality value of main plot, the SneighborFor the signal quality value of the adjacent cell, the QrxlevmeasFor the signal power strength of cell, the QrxlevminFor the minimum access signal power strength of cell, the QrxlevminoffsetFor cell signal deviant, the Q4g_plus_inter is signal quality amount of bias caused by the offset parameter Offset_4g_plus_inter.
Step 209, gravity treatment to the most forward adjacent cell that sorts；The gravity treatment includes to the most forward adjacent cell that sorts：
If Sneighbor＞ Sserving, then LTE Advanced cells described in the terminal gravity treatment to the priority ranking most forward adjacent cell.
In an alternative embodiment of the invention, if the adjacent cell is non-LTE Advanced cells, enter：
Step 204, according to 3G PP TS 36.304 generic way calculate 4G cells selection rule value.
Step 210, completion.
Fig. 4 is the schematic diagram of terminal in another embodiment of the present invention, as shown in figure 4, terminal of the embodiment of the present invention includes：Message reception module 1, judging module 2 and radio receiving transmitting module 3；Wherein,
The message reception module, for reading cell broadcast messages；And,
There are the specific identifier position and offset parameter for reading in the cell broadcast messages, then identify the cell for LTE Advanced cells；
The judging module, for according to the offset parameter, the LTE Advanced cells to mark to carry out priority ranking；
The radio receiving transmitting module, for selecting the forward LTE Advanced cells of priority ranking to set up connection.
Further, the message reception module includes：Message reading unit and mark unit；Wherein,
The message reading unit, the SIB1 for reading broadcast cell broadcasts the message；
The mark unit, has 4g_plus_supported flag bits and Offset_4g_plus offset parameters for reading in SIB1 broadcast messages, then the cell of the mark broadcast SIB1 broadcast messages is LTE Advanced cells.
Further, the message reading unit of message reception module described in the embodiment of the present invention, for reading the offset parameter Offset_4g_plus during the SIB1 of the LTE Advanced cells broadcasts the message；
The judging module, for the offset parameter Offset_4g_plus according to reading, priority ranking is carried out to the LTE Advanced cells；Wherein, priority ranking formula is：
S4g_plus=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
-Pcompensation+Q4g_plus
Wherein, the Q4g_plus is the amount of bias of the signal quality of the offset parameter Offset_4g_plus；
If S4g_plus compares other cells for maximum,
The radio receiving transmitting module, for making the endpoint registration to the LTE Advanced cells.
Alternatively, the terminal also includes in an alternative embodiment of the invention：Signal measurement module 4；Wherein,
Whether the signal measurement module, for measuring adjacent LTE Advanced cells, judge the adjacent LTE Advanced cells with main plot with frequency；
The judging module, is additionally operable to the judged result according to the main adjacent cell, and priority ranking is carried out to the main plot and adjacent cell using the offset parameter of reading；
The radio receiving transmitting module, if it is forward to be additionally operable to the adjacent LTE Advanced native region priorities sequence, sets up with the adjacent LTE Advanced cells and is connected.
Further, if the main adjacent cell is co-frequency cell；Then,
If the main adjacent cell is co-frequency cell；Then,
The message reception module, for reading the offset parameter Offset_4g_plus_intra during the SIB4 of the adjacent LTE Advanced cells broadcasts the message；
The judging module, for according to the offset parameter Offset_4g_plus_intra, priority ranking to be carried out to the LTE Advanced cells；Wherein, priority ranking formula is：
RS=Qmeas,s+Qhysts
Rn=Qmeas,n-Qoffset+Q4g_plus_intra
Wherein, the Q4g_plus_intra is signal quality amount of bias caused by the offset parameter Offset_4g_plus_intra；
If, Rn ＞ Rs；
The radio receiving transmitting module, for making the terminal gravity treatment be connected to the adjacent LTE Advanced cells.
Alternatively, if the main adjacent cell is alien-frequency district；Then,
If the main adjacent cell is alien-frequency district；Then,
The message reception module, for reading the offset parameter Offset_4g_plus_inter during the SIB5 of the adjacent LTE Advanced cells broadcasts the message；
The judging module, for according to the offset parameter Offset_4g_plus_inter, priority ranking to be carried out to the LTE Advanced cells；Wherein, priority ranking formula is：
SServing=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
Sneighbor=Qrelevmeas-(Qrxlevmin+Qrxlevminoffset)
+Q4g_plus_inter
Wherein, the Q4g_plus_inter is signal quality amount of bias caused by the offset parameter Offset_4g_plus_inter；
If, Sneighbor＞ Sserving；
The radio receiving transmitting module, for making the terminal gravity treatment be connected to the adjacent LTE Advanced cells.
Another embodiment of the present invention provides a kind of method for selecting cell, and methods described of the embodiment of the present invention includes：
Cell base station broadcasts the message, and wherein has specific identifier position and offset parameter in LTE Advanced cell base stations broadcast message；
Terminal reads cell broadcast messages；Wherein, reading in broadcast message has the specific identifier position and offset parameter, then the cell for identifying the reading is LTE Advanced cells；
According to the offset parameter of the LTE Advanced cells read, the cell that the terminal-pair is read carries out priority ranking；
The forward LTE Advanced cells of the terminal selection priority ranking set up connection.
The method for the selection cell that the embodiment of the present invention is provided, can be according to the specific identifier position of the LTE Advanced cells in the broadcast message of reading and offset parameter, identify the LTE Advanced cells read and determine the priority ranking of the LTE Advanced cells, support the 4G+ network terminals be connected according to automatic preferably set up with the LTE Advanced cells of the forward order of LTE Advanced native region priorities to realize, with reach resource using maximize and Consumer's Experience optimization.
One of ordinary skill in the art will appreciate that all or part of step in the above method, can instruct related hardware to complete, described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD by program.Correspondingly, each module in above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
It these are only the preferred embodiments of the present invention; certainly; the present invention can also have other various embodiments; in the case of without departing substantially from spirit of the invention and its essence; those skilled in the art work as can make various corresponding changes and deformation according to the present invention, but these corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
Claims (13)
1. a kind of method for selecting cell, applied to terminal, it is characterised in that including：
Read cell broadcast messages；
Reading in the cell broadcast messages has the specific identifier position and offset parameter, then identifies the cell for LTE A dvanced cells；
According to the offset parameter, the LTE A dvanced cells to mark carry out priority ranking；
The forward LTE A dvanced cells of priority ranking are selected to set up connection.
2. method according to claim 1, it is characterised in that described read in the cell broadcast messages has the specific identifier position and offset parameter, then identify the cell includes for LTE A dvanced cells：
Read the SIB1 broadcast messages of broadcast cell；
Reading in SIB1 broadcast messages has 4g_plus_supported flag bits and O ffset_4g_plus offset parameters, then the cell of the mark broadcast SIB1 broadcast messages is LTE A dvanced cells.
3. method according to claim 2, it is characterised in that the offset parameter for the LTE A dvanced cells that the basis is read, priority ranking is carried out to the cell read；If LTE A dvanced native region priorities sequence is forward, set up with the LTE A dvanced cells be connected including：
Read the offset parameter O ffset_4g_plus in the SIB1 broadcast messages of the LTE A dvanced cells；
According to the offset parameter O ffset_4g_plus of reading, priority ranking is carried out to the LTE A dvanced cells；Wherein, priority ranking formula is：
S4g_plus=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
-Pcompensation+Q4g_plus
Wherein, the S4g _ plusThe signal quality of the LTE A dvanced cells, the Q are received for terminalrxlevmeasFor the signal power strength of current area (being in the present embodiment the LTE A dvanced cells), the QrxlevminFor the minimum access signal power strength of current area, the QrxlevminoffsetTo search cell signal deviant during higher priority network when the cell that current terminal is stationed is roaming network, the Pcom pensation are terminal transmission power back-off, and the Q 4g_plus are signal offset correction caused by the offset parameter O ffset_4g_plus；
If S4g_plus compares other cells for maximum, the endpoint registration to the LTE A dvanced cells.
4. method according to claim 1, it is characterised in that methods described also includes：
Adjacent LTE Advanced cells are measured, judge the adjacent LTE A dvanced cells with main plot whether with frequency；
According to the judged result of the main adjacent cell, priority ranking is carried out to the main plot and adjacent cell using the offset parameter of reading；
If the adjacent LTE A dvanced native region priorities sequence is forward, sets up and be connected with the adjacent LTE A dvanced cells.
5. method according to claim 4, it is characterised in that the judged result according to the main adjacent cell, carrying out priority ranking to the main plot and adjacent cell using the offset parameter of reading includes：
If the main adjacent cell is co-frequency cell；Then,
Read the offset parameter Offset_4g_plus_intra in the SIB4 broadcast messages of the adjacent LTE Advanced cells；
According to the offset parameter Offset_4g_plus_intra, priority ranking is carried out to the LTE Advanced cells；Wherein, priority ranking formula is：
RS=Qmeas,s+Qhysts
Rn=Qmeas,n-Qoffset+Q4g_plus_intra
Wherein, the RsFor main cell reselection grade point, the RnFor the adjacent cell gravity treatment grade point, the Qmeas,sFor main cell signal power, the Qmeas,nFor the signal power of the adjacent cell, the Qhysts is main cell signal quality correction value, the Qoffset is the adjacent cell signal quality bias, and the Q4g_plus_intra is the signal quality amount of bias caused by the offset parameter Offset_4g_plus_intra；
If, Rn>Rs, the terminal gravity treatment is connected to the adjacent LTE Advanced cells.
6. method according to claim 4, it is characterised in that the judged result according to the main adjacent cell, carrying out priority ranking to the main plot and adjacent cell using the offset parameter of reading also includes：
If the main adjacent cell is alien-frequency district；Then,
Read the offset parameter O ffset_4g_plus_inter in the SIB5 broadcast messages of the adjacent LTE A dvanced cells；
According to the offset parameter O ffset_4g_plus_inter, priority ranking is carried out to the LTE A dvanced cells；Wherein, priority ranking formula is：
SServing=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
Sneighbor=Qrelevmeas-(Qrxlevmin+Qrxlevminoffset)
+Q4g_plus_inter
Wherein, the Sserving is the signal quality value of main plot, the SneighborFor the signal quality value of the adjacent cell, the Q 4g_plus_inter are signal offset correction caused by the offset parameter O ffset_4g_plus_inter；
If, Sneighbor＞ Sserving, the terminal gravity treatment is connected to the adjacent LTE A dvanced cells.
7. a kind of terminal of selection cell, it is characterised in that including：Message reception module, judging module and radio receiving transmitting module；Wherein,
The message reception module, for reading cell broadcast messages；And,
There are the specific identifier position and offset parameter for reading in the cell broadcast messages, then identify the cell for LTE A dvanced cells；
The judging module, for according to the offset parameter, the LTE A dvanced cells to mark to carry out priority ranking；
The radio receiving transmitting module, for selecting the forward LTE A dvanced cells of priority ranking to set up connection.
8. terminal according to claim 7, it is characterised in that the message reception module includes：Message reading unit and mark unit；Wherein,
The message reading unit, the SIB1 for reading broadcast cell broadcasts the message；
The mark unit, has 4g_plus_supported flag bits and O ffset_4g_plus offset parameters for reading in SIB1 broadcast messages, then the cell of the mark broadcast SIB1 broadcast messages is LTE A dvanced cells.
9. terminal according to claim 8, it is characterised in that：
The message reading unit of the message reception module, for reading the offset parameter O ffset_4g_plus during the SIB1 of the LTE A dvanced cells broadcasts the message；
The judging module, for the offset parameter O ffset_4g_plus according to reading, priority ranking is carried out to the LTE A dvanced cells；Wherein, priority ranking formula is：
S4g_plus=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
-Pcompensation+Q4g_plus
Wherein, the Q 4g_plus are the amount of bias of the signal quality of the offset parameter O ffset_4g_plus；
If S4g_plus compares other cells for maximum,
The radio receiving transmitting module, for making the endpoint registration to the LTE A dvanced cells.
10. terminal according to claim 7, it is characterised in that the terminal also includes：Signal measurement module；Wherein,
Whether the signal measurement module, for measuring adjacent LTE A dvanced cells, judge the adjacent LTE A dvanced cells with main plot with frequency；
The judging module, is additionally operable to the judged result according to the main adjacent cell, and priority ranking is carried out to the main plot and adjacent cell using the offset parameter of reading；
The radio receiving transmitting module, if it is forward to be additionally operable to the adjacent LTE A dvanced native region priorities sequence, sets up with the adjacent LTE A dvanced cells and is connected.
11. terminal according to claim 10, it is characterised in that if the main adjacent cell is co-frequency cell；Then,
If the main adjacent cell is co-frequency cell；Then,
The message reception module, for reading the offset parameter O ffset_4g_plus_intra during the SIB4 of the adjacent LTE A dvanced cells broadcasts the message；
The judging module, for according to the offset parameter O ffset_4g_plus_intra, priority ranking to be carried out to the LTE A dvanced cells；Wherein, priority ranking formula is：
RS=Qmeas,s+Qhysts
Rn=Qmeas,n-Qoffset+Q4g_plus_intra
Wherein, the Q 4g_plus_intra are the signal quality amount of bias of the offset parameter O ffset_4g_plus_intra；
If, Rn ＞ Rs；
The radio receiving transmitting module, for making the terminal gravity treatment be connected to the adjacent LTE A dvanced cells.
12. terminal according to claim 10, it is characterised in that if the main adjacent cell is alien-frequency district；Then,
If the main adjacent cell is alien-frequency district；Then,
The message reception module, for reading the offset parameter O ffset_4g_plus_inter during the SIB5 of the adjacent LTE A dvanced cells broadcasts the message；
The judging module, for according to the offset parameter O ffset_4g_plus_inter, priority ranking to be carried out to the LTE A dvanced cells；Wherein, priority ranking formula is：
SServing=Qrxlevmeas+(Qrxlevmin+Qrxlevminoffset)
Sneighbor=Qrelevmeas-(Qrxlevmin+Qrxlevminoffset)
+Q4g_plus_inter
Wherein, the Q 4g_plus_inter are the signal quality amount of bias of the offset parameter O ffset_4g_plus_inter；
If, Sneighbor＞ Sserving；
The radio receiving transmitting module, for making the terminal gravity treatment be connected to the adjacent LTE A dvanced cells.
13. a kind of method for selecting cell, it is characterised in that including：
Cell base station broadcasts the message, and wherein has specific identifier position and offset parameter in LTE A dvanced cell base stations broadcast message；
Terminal reads cell broadcast messages；Wherein, reading in broadcast message has the specific identifier position and offset parameter, then the cell for identifying the reading is LTE A dvanced cells；
According to the offset parameter of the LTE A dvanced cells read, the cell that the terminal-pair is read carries out priority ranking；
The forward LTE A dvanced cells of the terminal selection priority ranking set up connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610101536.1A CN107105473A (en) | 2016-02-23 | 2016-02-23 | A kind of method and terminal of selection cell |
| PCT/CN2016/083185 WO2016197818A2 (en) | 2016-02-23 | 2016-05-24 | Method and terminal for selecting cell |
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| CN201610101536.1A CN107105473A (en) | 2016-02-23 | 2016-02-23 | A kind of method and terminal of selection cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268387A (en) * | 2019-03-26 | 2022-04-01 | 华为技术有限公司 | Switching method and device in satellite communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101730164A (en) * | 2008-10-17 | 2010-06-09 | 上海华为技术有限公司 | Method and terminal for reselecting cell |
| US20130183963A1 (en) * | 2012-01-16 | 2013-07-18 | Renesas Mobile Corporation | Inter-Cell Device Discovery in Device-to-Device Communication |
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| TWI486031B (en) * | 2007-08-03 | 2015-05-21 | Interdigital Patent Holdings | System level information for discontinuous reception, cell selection and rach |
| CN102752826B (en) * | 2012-07-03 | 2014-12-10 | 华为技术有限公司 | Cell reselection method and device |
| CN103327546B (en) * | 2013-05-31 | 2016-07-27 | 中国联合网络通信集团有限公司 | Residence reselecting and device |
| US10757632B2 (en) * | 2013-09-30 | 2020-08-25 | Qualcomm Incorporated | Public land mobile network identifier for non-mobile network operator networks |
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| CN101730164A (en) * | 2008-10-17 | 2010-06-09 | 上海华为技术有限公司 | Method and terminal for reselecting cell |
| US20130183963A1 (en) * | 2012-01-16 | 2013-07-18 | Renesas Mobile Corporation | Inter-Cell Device Discovery in Device-to-Device Communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114268387A (en) * | 2019-03-26 | 2022-04-01 | 华为技术有限公司 | Switching method and device in satellite communication |
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| WO2016197818A3 (en) | 2017-02-02 |
| WO2016197818A2 (en) | 2016-12-15 |
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Application publication date: 20170829 |