CN103379508A - Method and system for acquiring resident frequency point of mobile terminal - Google Patents
Method and system for acquiring resident frequency point of mobile terminal Download PDFInfo
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Abstract
The invention discloses a method and system for acquiring a resident frequency point of a mobile terminal. The method comprises the steps that the mobile terminal determines channel serial numbers corresponding to frequency points capable of being used by the mobile terminal according to network side configuration; the mobile terminal determines channel serial numbers corresponding to frequency points capable of being allowed by the mobile terminal according to the frequency capacity of the mobile terminal; a network side determines channel serial numbers corresponding to frequency points capable of being allowed by the mobile terminal according to the frequency capacity reported by the mobile terminal and determines channel serial numbers corresponding to frequency points capable of being used by the mobile terminal according to the configuration of the network side; the network side and the mobile terminal respectively determine a sequence number corresponding to a channel serial number corresponding to a frequency point where the mobile terminal finally resides through a Hash algorithm according to the channel serial numbers corresponding to the frequency points capable of being used by the mobile terminal and the channel serial numbers corresponding to the frequency points capable of being allowed by the mobile terminal, wherein the channel serial numbers corresponding to the frequency points capable of being used by the mobile terminal and the channel serial numbers corresponding to the frequency points capable of being allowed by the mobile terminal are respectively calculated by the network side and the mobile terminal. Due to the fact that the uniqueness of a channel serial number corresponding to a newly-increased expansion frequency point in a frequency band level is guaranteed, the regular work of a roaming service can be effectively guaranteed.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and a system for acquiring a resident frequency point of a mobile terminal.
Background
As CDMA networks are continuously developed and CDMA smart users rapidly grow, more frequency resources are urgently needed to support the expansion and development of CDMA networks, and the available frequency resources in these networks must be within the frequency band supportable by mobile terminals.
Assuming that a CDMA network already uses the Subclass (X) (i.e., sub-Class (X)) Band of Band Class (a), it needs to add new frequency bands for network expansion according to the demand for frequency resources, and these new available frequency resources may not be completely overlapped with other Subclass bands of Band Class (a) nor within Subclass (X) of Band Class (a).
If an EV-DO or CDMA system is deployed on a newly added available frequency and an existing frequency band definition mode of 3GPP2 is adopted, problems may occur that a DOB terminal (a terminal using 1 to 3 DOA (supporting one carrier, downlink rate: 3.1M, uplink rate: 1.8M) carriers may bundle carriers, and downlink rate: carrier number × 3.1M, uplink rate: carrier number × 1.8 MHz) cannot perform carrier bundling and roaming paging across frequency bands.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method and a system for acquiring a resident frequency point of a mobile terminal, which can effectively ensure the normal operation of a roaming paging service while realizing the capacity expansion of the frequency point.
According to one aspect of the invention, a method for acquiring resident frequency points of a mobile terminal is provided, which comprises the steps that the mobile terminal determines channel numbers corresponding to all frequency points which can be used by the mobile terminal according to a frequency band level configured on a network side and channel numbers corresponding to the frequency points in the frequency band level, wherein all the frequency points which can be used by the mobile terminal comprise all the frequency points before capacity expansion and all the frequency points newly increased in capacity expansion; the mobile terminal determines the channel number corresponding to each frequency point supported by the mobile terminal according to the frequency band level supported by the mobile terminal and the sub-level in the frequency band level, wherein the frequency band level supported by the mobile terminal at least comprises one sub-level, one sub-level corresponds to a frequency band before expansion or a frequency band newly added with expansion, the newly added frequency band with expansion at least comprises a newly added frequency point with expansion, and the newly added frequency band with expansion [ F3, F4 ] is]The value range of the channel number corresponding to each newly increased expanded frequency point is [ N3, N4 ]]N3 is max (the channel number corresponding to each frequency point in all sub-levels before the expansion in the frequency band level supportable by the mobile terminal) + T,
t is an integer which is more than or equal to 1, and Channelband is the channel bandwidth; the network side receives the supportable frequency band level reported by the mobile terminal and the sub-level in the frequency band level, determines the channel number corresponding to each frequency point supportable by the mobile terminal according to the sub-level in the supportable frequency band level of the mobile terminal, and determines the channel number corresponding to each frequency point usable by the mobile terminal according to the configuration of the network side; under the condition that the frequency band level configured by the network side is the same as the frequency band level which can be supported by the mobile terminal, the network side and the mobile terminal respectively calculate the movementThe channel number corresponding to each frequency point which can be used by the terminal and the channel number corresponding to each frequency point which can be supported by the mobile terminal respectively determine the channel number corresponding to each frequency point which can be resided by the mobile terminal; and the network side and the mobile terminal sort the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sorting method, and determine the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal finally resides through a Hash algorithm based on the number of the frequency points where the corresponding mobile terminal can reside respectively.
According to another aspect of the present invention, a system for acquiring a mobile terminal resident frequency point is further provided, including a mobile terminal and a base station, where the mobile terminal includes: a first configuration capacity obtaining unit, configured to determine, according to a frequency band level configured on a network side and a channel number corresponding to a frequency point in the frequency band level, a channel number corresponding to each frequency point available to the mobile terminal, where each frequency point available to the mobile terminal includes each frequency point before expansion and each frequency point newly increased in expansion; a first terminal capability obtaining unit, configured to determine, according to a frequency band level supportable by the mobile terminal and a sub-level within the frequency band level, a channel number corresponding to each frequency point supportable by the mobile terminal, where the frequency band level supportable by the mobile terminal includes at least one sub-level, each sub-level corresponds to a frequency band before capacity expansion or a frequency band newly added for capacity expansion, and the newly added frequency band for capacity expansion includes at least one newly added capacity point, where the newly added frequency band for capacity expansion [ F3, F4 ]]The value range of the channel number corresponding to each newly increased expanded frequency point is [ N3, N4 ]]N3 is max (the channel number corresponding to each frequency point in all sub-levels before the expansion in the frequency band level supportable by the mobile terminal) + T,
t is an integer which is more than or equal to 1, and Channelband is the channel bandwidth; a first residable frequency point determining unit, configured to, under the condition that the frequency band level configured on the network side is the same as the frequency band level supportable by the mobile terminal, determine, according to the channel numbers corresponding to the frequency points usable by the mobile terminal and the newly added frequency points and the frequency points supportable by the mobile terminalThe channel number determines the channel number corresponding to each frequency point where the mobile terminal can reside; the first resident frequency point sequence number determining unit is used for sequencing the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sequencing method as the base station, and determining the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal finally resides through a Hash algorithm based on the number of the frequency points where the mobile terminal can reside; the base station includes: a second terminal capability obtaining unit, configured to receive the supportable frequency band level reported by the mobile terminal and the sub-level in the frequency band level, and determine, according to the sub-level in the supportable frequency band level of the mobile terminal, a channel number corresponding to each frequency point that the mobile terminal can support; a second configuration capacity obtaining unit, configured to determine, according to the configuration of the network side, channel numbers corresponding to frequency points that can be used by the mobile terminal; a second frequency point determining unit, configured to determine, when the frequency band level configured on the network side is the same as the frequency band level supportable by the mobile terminal, a channel number corresponding to each frequency point where the mobile terminal can reside according to a channel number corresponding to each frequency point supportable by the mobile terminal and a channel number corresponding to each frequency point usable by the mobile terminal, if a sub-level in the frequency band level supportable by the mobile terminal includes an expanded newly-added frequency band; and the second resident frequency point sequence number determining unit is used for sequencing the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sequencing method as the mobile terminal side, and determining the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal can reside finally based on the number of the frequency points where the mobile terminal can reside calculated by the second resident frequency point determining unit through a Hash algorithm.
According to the method and the system for acquiring the resident frequency point of the mobile terminal, provided by the invention, the mobile terminal and the network side are utilized to respectively calculate the serial numbers of the channel numbers corresponding to the frequency points through a Hash algorithm, so that the frequency points which are finally resident by the mobile terminal are obtained. Because the mobile terminal redefines the channel numbers corresponding to the frequency points in the expanded new frequency band which may not be completely overlapped with the frequency bands before expansion, the channel numbers corresponding to the frequency points in the expanded new frequency band are completely different from the channel numbers corresponding to the frequency points in the frequency bands before expansion, and the resident frequency points calculated by the network side and the terminal side are the same, so that the normal operation of the roaming paging service can be effectively ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application. In the drawings:
fig. 1 is a schematic diagram of the present invention defining sub-levels of a frequency level.
Fig. 2 is a flowchart illustrating an embodiment of a method for acquiring a camping frequency point of a mobile terminal according to the present invention.
Fig. 3 is a schematic structural diagram of a system for acquiring a camping frequency point of a mobile terminal according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a system for acquiring a camping frequency point of a mobile terminal according to another embodiment of the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
If a CDMA network already uses a certain Subclass Band of a Band Class, for example, Subclass (x) of Band Class (a), it may need to expand the capacity based on the existing used frequency Band, if the expanded new Band is not in the Subclass (x) range of Band Class (a) and does not completely overlap with other Subclass bands of Band Class (a), as shown in fig. 1, the expanded new Band is not in Subclass (x) and does not completely overlap with other subclasss such as Subclass (y), and for the convenience of distinguishing the expanded new Band from other subclasss that may partially overlap on the network side, the expanded new Band may be defined as Subclass (z).
The inventor has noted that, since chips in the DOB terminal do not support carrier bonding across Band classes, in order to increase network speed, these capacity-expanded newly-added frequency bands and the currently used Subclass may be set in the same Band Class so as to implement carrier bonding, for example, Subclass (z) is also defined in Band Class (a).
Meanwhile, the inventor also notes that, for the subclass (z) containing the capacity-expanded newly-added frequency Band, if the original frequency point numbering mode is adopted and the capacity-expanded newly-added frequency Band is partially overlapped with the frequency Band of the subclass (y) of the original Band Class (a), when a new terminal supporting the capacity-expanded newly-added frequency Band roams to a network not supporting the subclass (z), the following problems may occur: if the network adopts the frequency points of Subclass (Y) overlapped with Subclass (Z) and issues Channel Number (Channel Number) of the overlapped frequency points in a Channel list, because the frequency point information issued by the network only comprises Band Class and Channel Number information corresponding to some frequency points in the Band Class, the new terminal compares the frequency points in the Subclass supported by the new terminal of the received Channel Number after receiving the Channel list, and because the frequency points are overlapped, the new terminal considers that the new terminal supports the frequency points, the frequency points participate in the Hash operation at the terminal side, and then the new terminal resides on one frequency point. When the new terminal performs session negotiation with the network after starting up, the network reports information such as Subclas (Z) with supportable frequency of BandClass (A) to the network, and the network firstly judges whether the Subclas supported by the new terminal and the channel number configured for the new terminal belong to the same Subclas, and if not, the network ignores the Subclas (Z) not supported by the new terminal even if the channel numbers are the same (namely, the overlapped partial frequency points between different Subclas), and considers that the new terminal cannot support the Subclas (Y) frequency point in the Band Class (A), so that the hash result calculated by the network side is not consistent with the hash result calculated by the new terminal side, and the network cannot normally page the terminal.
Based on the above understanding, the inventor believes that, in order to prevent the terminal from being unable to be paged normally, after frequency expansion is performed, if the frequency bands of the overlapped part belong to different subframes, a new Channel Number numbering mode and a frequency calculation mode need to be adopted for each frequency point in the expanded and newly added frequency bands, so that it can be ensured that the terminal consistently determines the frequency point where the terminal will reside finally after receiving the Channel Number issued by the network side and after the network side receives the terminal capability reported by the terminal.
Fig. 2 is a flowchart illustrating an embodiment of a method for acquiring a camping frequency point of a mobile terminal according to the present invention.
As shown in fig. 2, this embodiment may include the steps of:
in step S202, the network side periodically broadcasts a sector parameter message, and the mobile terminal receives the sector parameter message sent by the network side, where the sector parameter message includes channel list information and extended channel list information.
If the mobile terminal detects that the contents in the channel list information and the expanded channel list information are the same as the contents received last time, the mobile terminal does not recalculate the frequency point where the mobile terminal will reside, and if the contents are different from the contents received last time, the following steps are required to recalculate the frequency point where the mobile terminal will reside.
In step S204, it is determined whether the mobile terminal supports capacity expansion of frequency points, and if the mobile terminal supports capacity expansion of frequency points, the contents in the channel list information and the expanded channel list information are read.
The channel list information includes a frequency band level (i.e. which BandClass) configured by the network side and a channel number corresponding to each frequency point available to the mobile terminal in the frequency band level before capacity expansion of the frequency point, and the expanded channel list information includes a frequency band level configured by the network side and a channel number corresponding to each newly added frequency point available to the mobile terminal in the frequency band level.
In step S206, the channel number corresponding to each frequency point supportable by the mobile terminal is determined according to the frequency band level supportable by the mobile terminal and the sub-level supportable in the frequency band level.
The mobile terminal comprises a frequency band level which can be supported by the mobile terminal, wherein the frequency band level which can be supported by the mobile terminal at least comprises a sub-level, the sub-level corresponds to a frequency band before capacity expansion or a newly expanded frequency band, the newly expanded frequency band is not completely overlapped with other frequency bands in the frequency band level which can be supported by the mobile terminal, and the newly expanded frequency band at least comprises a newly expanded frequency point.
The channel number corresponding to each frequency point in each frequency Band before capacity expansion may be calculated by referring to Band Class Specification for CDMA2000spread spectrum Systems in 3GPP2 standard.
The method for calculating the channel number corresponding to each frequency point in the expanded newly-added frequency band comprises the following steps:
suppose the expansion newly-added frequency band is F3, F4]，[F3，F4]The value range of the channel number corresponding to each frequency point is [ N3, N4 ]]N3 is max (the channel number corresponding to each frequency point in all sub-levels before the expansion in the frequency band level supportable by the mobile terminal) + T,
t is an integer which is more than or equal to 1, and Channelband is the channel bandwidth. The method for calculating the channel numbers corresponding to the frequency points in the capacity-expanding newly-increased frequency band ensures that the channel numbers in the Subclases in the same BandClass have uniqueness, namely, the Subclases to which the channel numbers belong can be uniquely determined according to the channel numbers. Thus, even if some frequency points in different Subclases are overlapped, the frequency points can be distinguished by different Channel numbers.
If the mobile terminal is to reside in the newly increased capacity frequency band, the channel number in the expanded channel list information configured on the network side at least includes a channel number corresponding to one newly increased capacity frequency point in the newly increased capacity frequency band that can be supported by the mobile terminal.
In step S208, the network and the mobile terminal both have Band Class and subframe supported by themselves, and may have different, and only the frequency point supported by both sides can work normally. If the network side is configured with a plurality of Channel numbers, the terminal side needs to determine the Channel numbers supported by the terminal side according to the capability of the terminal side, and calculate the intersection of the two Channel numbers.
Specifically, under the condition that the frequency band level configured on the network side is the same as the frequency band level supportable by the mobile terminal, the channel number corresponding to each frequency point where the mobile terminal can reside is determined according to the channel number corresponding to each frequency point available to the mobile terminal, the channel number corresponding to each capacity-expanded newly-added frequency point available to the mobile terminal, and the channel number corresponding to each frequency point supportable by the mobile terminal.
That is, the intersection of the channel numbers corresponding to the frequency points that can be supported by the mobile terminal and the channel numbers corresponding to the frequency points configured on the network side is calculated, where the intersection is the frequency point at which the mobile terminal may reside, and specifically, which frequency point the mobile terminal resides on is obtained through the hash algorithm in step S210.
In step S210, the channel numbers corresponding to the frequency points where the mobile terminal can reside are sorted according to the same sorting method as the network side, for example, the channel numbers corresponding to the frequency points where the mobile terminal can reside may be sorted according to the sequence of the channel numbers in the channel list information and the extended channel list information, sorted according to the sequence of the numbers from small to large, or sorted according to the sequence of the numbers from large to small.
And after the sequencing is finished, determining a serial number corresponding to a channel number corresponding to the frequency point where the mobile terminal finally resides by a Hash algorithm based on the number of the frequency points where the mobile terminal may reside.
Specifically, the frequency point where the mobile terminal will reside finally may be calculated by the following formula:
wherein N represents the number of resources, that is, the number of frequency points where the mobile Terminal can reside determined in step S208, L is the low 16 bits of the binary system of ATI (Access Terminal Identifier) acquired by the mobile Terminal from the network side, H is the high 16 bits of the binary system of ATI acquired by the mobile Terminal from the network side, the Decorrelate value in the present algorithm is 0, and R is the serial number of the channel number corresponding to the frequency point where the mobile Terminal finally resides.
And determining the frequency point where the mobile terminal finally resides according to the calculated serial number of the channel number and the corresponding relation between the channel number and the frequency point.
Meanwhile, the network side also needs to calculate the frequency point where the mobile terminal will reside finally according to the frequency capability reported by the mobile terminal, and the specific implementation process is as follows:
in step S212, the network side receives the supportable frequency band level reported by the mobile terminal and the supportable sub-level in the frequency band level, first determines whether the supportable frequency band level of the mobile terminal is the same as the frequency band level configured by the network side, and if so, then determines whether the network side supports the Subclass supportable by the mobile terminal, and if so, then determines the channel number corresponding to each frequency point supportable by the mobile terminal according to the sub-level in the frequency band level supportable by the mobile terminal, and the specific calculation method of the channel number may refer to the calculation method of the terminal side in step S206.
In step S214, the network side determines the channel number corresponding to each frequency point available to the mobile terminal according to the channel list information configured for the mobile terminal and the expanded channel list information, where the frequency points available to the mobile terminal include frequency points before expansion and frequency points newly increased after expansion.
In step S216, if the sub-level in the frequency Band level that can be supported by the mobile terminal includes an expanded and newly added frequency Band, the network side determines the channel number corresponding to each frequency point that the mobile terminal can reside according to the channel number corresponding to each frequency point that the mobile terminal can support calculated in step S212 and the channel number corresponding to each frequency point that the mobile terminal can use calculated in step S214, and similarly to the terminal side, calculates the intersection of the channel number corresponding to each frequency point that the mobile terminal can support and the channel number corresponding to each frequency point configured on the network side.
In step S218, the network side sorts the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sorting method as the mobile terminal side, so as to ensure that the frequency point where the mobile terminal will ultimately reside calculated by the network side is consistent with the frequency point where the mobile terminal will ultimately reside calculated by the terminal side, and determines the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal will ultimately reside based on the number of frequency points where the mobile terminal can reside calculated by the network side through a hash algorithm, where the specific hash algorithm is the same as the algorithm used by the mobile terminal side in step S210.
It is noted that steps S202-S210 may be performed in parallel with steps S212-S218.
In this embodiment, the channel numbers corresponding to the frequency points in the expanded newly-added frequency band are redefined, and the minimum value of the channel numbers is set to be at least 1 greater than the maximum value in the existing subclasses. Because the channel numbers corresponding to the frequency points in the Subclass corresponding to the expanded newly added frequency Band have uniqueness in the whole Band Class, the result inconsistency between the network side and the terminal side during the hash operation can be avoided, and the problem of paging failure when the mobile terminal supports the expanded newly added frequency Band is prevented.
Generally, after the mobile terminal is powered off, the network side and the mobile terminal may retain the parameters negotiated by both sides for a period of time, which may include, but are not limited to, protocol contents of a physical layer, a MAC layer, a security layer, a connection layer, a session layer, a streaming layer, and the like negotiated by the terminal and the network. The embodiment in fig. 2 is a specific implementation scheme for determining a frequency point where a mobile terminal finally resides when both a network side and a mobile terminal side retain a result negotiated with the mobile terminal last time. If the network side and the mobile terminal do not reserve the parameters negotiated by the two sides, the mobile terminal needs to start up and then the two sides perform session negotiation, in the negotiation process, the terminal reports the supported frequency capability to the network side, the frequency capability comprises BandClass and Subclas which can be supported by the mobile terminal, and after the negotiation is finished, the frequency points where the mobile terminal will reside finally are respectively determined.
Optionally, before step S202, after the mobile terminal is powered on, network search may be performed by using an MRU (Most recent Use, List used Recently), or a PRL (preferred Roaming List) before capacity expansion of a frequency point may be used to search a working frequency point, and a sector parameter message issued by the network side is received based on the searched working frequency point. The method for carrying out channel numbering on each capacity-expanded newly-added frequency point does not affect the prior PRL, namely, the method does not need to update the prior PRL, the terminal can search the frequency point before capacity expansion according to the old PRL and send the sector parameter message containing the channel list information and the expanded channel list information by using the searched frequency point before capacity expansion, and the terminal and the network can calculate the frequency point to be resided by using the two pieces of list information, so that the terminal and the network can be temporarily resided on the old frequency point when searching the network, but can be resided on the capacity-expanded newly-added frequency point after hash operation.
Next, how to set a corresponding channel number for each frequency point in the expanded and newly added frequency band is described in detail by a specific example.
Referring to fig. 1 again, assuming that the mobile terminal originally works on a certain frequency point or certain frequency points in subclass (x), both the mobile terminal and the network perform frequency expansion due to service requirements, for example, the newly expanded frequency band is defined as subclass (z), and the subclass (z) partially overlaps with the subclass (y) but does not overlap with the subclass (x).
Specifically, Subclas (X) and Subclas (Z) in Band Class (A) are defined as follows:
TABLE 1
Wherein, F1-F2 is a subclass (x) frequency Band of Band Class (a) and is used for the frequency Band range of mobile station transmission, and F3-F4 is a subclass (z) frequency Band of Band Class (a) and is used for the expanded frequency range of mobile station transmission, wherein F1< F2, F3< F4, F2< F3 or F1> F4 (in fig. 1, F2< F3), and F is the interval of uplink and downlink frequency bands.
The following table 2 shows the channel numbers corresponding to the frequency points in the Subclss (Z) of Band Class (A):
TABLE 2
Wherein,the value of N3 is the channel number of Subclas (Z), compared with the number of each channel in Band Class (A) before expansionThe maximum value of (A) is at least 1, ChannelBand (N-N3) + F3 is a frequency calculation formula of an expansion newly-increased frequency band, F is an interval of an uplink frequency band and a downlink frequency band, and ChannelBand is a channel bandwidth.
Suppose that the network side configures some frequency points in Subclas (X) and Subclas (Y) in Band Class (A) for the mobile terminal, and the mobile terminal supports Subclas (Z) and Subclas (X) in Band Class (A). After the mobile terminal receives the sector parameter message sent by the network side, although some frequency points are overlapped in the subclass (y) and the subclass (z), because a new channel numbering mode is adopted for all frequency points in the newly increased subclass (z), the mobile terminal determines that the frequency points which may reside in the mobile terminal are the frequency points in the subclass (x) configured by the network side. And the mobile terminal side and the network side respectively sort the frequency points which are possibly resided by the mobile terminal by adopting the sequence of the channel numbers from small to large, then calculate the sequence number of the channel number corresponding to the frequency point which is finally resided by the mobile terminal through a Hash algorithm, and determine the frequency point which is finally resided by the mobile terminal according to the corresponding relation between the channel number and the frequency point. Because the channel numbers corresponding to the frequency points in different subclasses with overlapping partial frequency points are newly defined, even if the network side configuration is inconsistent with the terminal side capability, the frequency points which are calculated by the two sides and finally resided by the mobile terminal can be effectively ensured to be the same, and therefore, the normal realization of the roaming service can be ensured.
It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, the program may be stored in a storage medium readable by a computing device, and when executed, the program performs the steps of the above method embodiments, and the storage medium may include various media capable of storing program codes, such as ROM, RAM, magnetic disk and optical disk.
Fig. 3 is a schematic structural diagram of a system for acquiring a camping frequency point of a mobile terminal according to an embodiment of the present invention.
As shown in fig. 3, the system 30 includes a mobile terminal 302 and a base station 304, where the mobile terminal 302 communicates with the base station 304 in a wireless manner, and the mobile terminal 302 may further include a first configuration capability acquiring unit 3021, a first terminal capability acquiring unit 3022, a first camping frequency point determining unit 3023, and a first camping frequency point number determining unit 3024; the base station 304 may further include a second terminal capability obtaining unit 3041, a second configuration capability obtaining unit 3042, a second camping frequency point determining unit 3043, and a second camping frequency point sequence number determining unit 3044.
Specifically, the first configuration capability obtaining unit 3021 in the mobile terminal 302 determines, according to the frequency band level configured on the network side and the channel number corresponding to the frequency point in the frequency band level, a channel number corresponding to each frequency point that can be used by the mobile terminal, where each frequency point that can be used by the mobile terminal includes each frequency point before capacity expansion and each frequency point newly increased in capacity expansion; the first terminal capability obtaining unit 3022 determines channel numbers corresponding to frequency points supportable by the mobile terminal according to a frequency band level supportable by the mobile terminal and sub-levels within the frequency band level, where the frequency band level supportable by the mobile terminal includes at least one sub-level, each sub-level corresponds to a frequency band before capacity expansion or a frequency band newly added for capacity expansion, and the newly added frequency band for capacity expansion includes at least one newly added capacity-expansion frequency point, where the newly added frequency band for capacity expansion [ F3, F4 ]]The value range of the channel number corresponding to each newly increased expanded frequency point is [ N3, N4 ]]N3 is max (the channel number corresponding to each frequency point in all sub-levels before the expansion in the frequency band level supportable by the mobile terminal) + T,
t is an integer which is more than or equal to 1, and Channelband is the channel bandwidth; under the condition that the frequency band level configured by the network side is the same as the frequency band level supportable by the mobile terminal, the first residable frequency point determining unit 3023 determines the frequency band level usable by the mobile terminalDetermining the channel number corresponding to each frequency point where the mobile terminal can reside by the frequency points, the channel numbers corresponding to each expanded newly-added frequency point and the channel numbers corresponding to each frequency point which can be supported by the mobile terminal; the first resident frequency point sequence number determining unit 3024 sequences the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sequencing method as the base station, and determines the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal finally resides based on the number of the frequency points where the mobile terminal can reside by using a hash algorithm.
A second terminal capability obtaining unit 3041 in the base station 304 receives the supportable frequency band level reported by the mobile terminal and the sub-level in the frequency band level, and determines the channel number corresponding to each frequency point supportable by the mobile terminal according to the sub-level in the frequency band level supportable by the mobile terminal; the second configuration capability obtaining unit 3042 determines, according to the configuration of the network side, channel numbers corresponding to the frequency points that can be used by the mobile terminal; under the condition that the frequency band level configured on the network side is the same as the frequency band level supportable by the mobile terminal, if the sub-level in the frequency band level supportable by the mobile terminal includes an expanded newly-added frequency band, the second residable frequency point determining unit 3043 determines the channel number corresponding to each frequency point where the mobile terminal can reside together according to the channel number corresponding to each frequency point supportable by the mobile terminal and the channel number corresponding to each frequency point usable by the mobile terminal; the second resident frequency point sequence number determining unit 3044 ranks the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same ranking method as the mobile terminal side, and determines the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal can reside finally by a hash algorithm based on the number of frequency points where the mobile terminal can reside calculated by the second resident frequency point determining unit.
Optionally, the first resident frequency point sequence number determining unit and the second resident frequency point sequence number determining unit may both sort the channel numbers corresponding to the frequency points where the mobile terminal may reside in the channel list information and the extended channel list information according to the order of the channel numbers corresponding to the frequency points where the mobile terminal may reside, sort the channel numbers corresponding to the frequency points where the mobile terminal may reside according to the order of the numbers from small to large, or sort the channel numbers corresponding to the frequency points where the mobile terminal may reside according to the order of the numbers from large to small. However, it should be noted that the ordering methods adopted by the first persistent frequency point number determining unit and the second persistent frequency point number determining unit should be consistent.
In this embodiment, when a new terminal roams to a network that does not support subclass (z) outside, even if the network includes frequency points overlapping with a new frequency Band (e.g. subclass (y) of Band Class (a)), since the subclass (z) of Band Class (a) and the subclass (y) and the like use different channel numbers and calculation methods, the new terminal ignores the frequency points of the subclass (y) of Band Class (a) that are not supported, so that the hash result is consistent with the roaming network, thereby ensuring coexistence of systems under the same Band Class and under the condition of overlapping frequency bands, and ensuring international roaming.
Fig. 4 is a schematic structural diagram of a system for acquiring a camping frequency point of a mobile terminal according to another embodiment of the present invention.
As shown in fig. 4, compared with the embodiment in fig. 3, the mobile terminal 402 in the system 40 in this embodiment may further include a network searching unit 4021, and after the mobile terminal is powered on, the network searching unit 4021 searches for the working frequency point by using the PRL before the capacity expansion of the frequency point, and receives the sector parameter message sent by the network side based on the searched working frequency point.
In this embodiment, when the terminal is powered on, the network can be searched according to the MRU or the PRL, and the terminal may reside on a new frequency point only by searching the original frequency point and according to the hash algorithm, so that the PRL does not need to be changed, and the newly expanded channel list information does not need to be included in the PRL. The terminal can search the frequency point in Subclass (X) according to the PRL, read the channel list information and the expanded channel list information in the sector parameter message, and perform hash operation according to the channel messages, wherein the result may reside in the old frequency point or the expanded and newly added frequency point.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be mutually referred to. For the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the description of the method embodiment section for the relevant points.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. A method for obtaining a resident frequency point of a mobile terminal is characterized by comprising the following steps:
the mobile terminal determines a channel number corresponding to each frequency point which can be used by the mobile terminal according to a frequency band level configured by a network side and a channel number corresponding to a frequency point in the frequency band level, wherein each frequency point which can be used by the mobile terminal comprises each frequency point before expansion and each frequency point newly increased after expansion;
the mobile terminal determines that the mobile terminal can be used according to the frequency band level which can be supported by the mobile terminal and the sub-level in the frequency band levelThe channel number corresponding to each frequency point supported, wherein the frequency band level supported by the mobile terminal at least comprises a sublevel, the sublevel corresponds to a frequency band before capacity expansion or a newly increased frequency band after capacity expansion, the newly increased frequency band at least comprises a newly increased capacity expansion frequency point, wherein the newly increased capacity expansion frequency band [ F3, F4 ]]The value range of the channel number corresponding to each newly increased expanded frequency point is [ N3, N4 ]]N3 is max (the channel number corresponding to each frequency point in all sub-levels before the expansion in the frequency band level supportable by the mobile terminal) + T,
t is an integer which is more than or equal to 1, and Channelband is the channel bandwidth;
a network side receives the supportable frequency band level reported by the mobile terminal and the sub-level in the frequency band level, determines the channel number corresponding to each frequency point supportable by the mobile terminal according to the sub-level in the frequency band level supportable by the mobile terminal, and determines the channel number corresponding to each frequency point usable by the mobile terminal according to the configuration of the network side;
under the condition that the frequency band level configured by the network side is the same as the frequency band level which can be supported by the mobile terminal, the network side and the mobile terminal respectively determine the channel number which corresponds to each frequency point which can be resided by the mobile terminal according to the channel number which corresponds to each frequency point which can be used by the mobile terminal and the channel number which corresponds to each frequency point which can be supported by the mobile terminal which are calculated respectively;
and the network side and the mobile terminal sort the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sorting method, and determine the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal finally resides through a Hash algorithm based on the number of the frequency points where the mobile terminal can reside.
2. The method for acquiring the camping frequency point of the mobile terminal according to claim 1, wherein the method further comprises:
after the mobile terminal is started, the PRL before the capacity expansion of the frequency point is utilized to search the working frequency point, and the sector parameter message sent by the network side is received based on the searched working frequency point.
3. The method for acquiring the frequency points where the mobile terminal resides according to claim 1, wherein the step of ordering, by the network side and the mobile terminal according to the same ordering method, the channel numbers corresponding to the frequency points where the mobile terminal can reside specifically comprises:
sequencing according to the sequence of the channel numbers corresponding to the frequency points where the mobile terminal can reside in the channel list information and the expanded channel list information;
sequencing channel numbers corresponding to frequency points where the mobile terminal can reside according to the sequence of the numbers from small to large; or
And sequencing the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the sequence of the numbers from large to small.
4. The method according to claim 1, wherein the newly added expanded frequency band does not completely overlap with other frequency bands in the frequency band class supportable by the mobile terminal.
5. A system for acquiring resident frequency points of a mobile terminal is characterized by comprising the mobile terminal and a base station, wherein the mobile terminal and the base station communicate in a wireless mode,
the mobile terminal includes:
a first configuration capacity obtaining unit, configured to determine, according to a frequency band level configured on a network side and a channel number corresponding to a frequency point in the frequency band level, a channel number corresponding to each frequency point available to the mobile terminal, where each frequency point available to the mobile terminal includes each frequency point before capacity expansion and each frequency point newly added with capacity expansion;
a first terminal capability obtaining unit for obtaining the capability of the mobile terminal according to the capability supported by the mobile terminalDetermining channel numbers corresponding to frequency points supported by the mobile terminal according to the frequency band level and the sub-level in the frequency band level, wherein the frequency band level supported by the mobile terminal at least comprises one sub-level, one sub-level corresponds to a frequency band before capacity expansion or a frequency band newly increased by capacity expansion, and the newly increased frequency band at least comprises one capacity expansion newly increased frequency point, wherein the capacity expansion newly increased frequency band [ F3, F4 ]]The value range of the channel number corresponding to each newly increased expanded frequency point is [ N3, N4 ]]N3 is max (the channel number corresponding to each frequency point in all sub-levels before the expansion in the frequency band level supportable by the mobile terminal) + T,t is an integer which is more than or equal to 1, and Channelband is the channel bandwidth;
a first frequency point determining unit capable of residing, configured to determine, according to the frequency points available to the mobile terminal, the channel numbers corresponding to the newly added capacity-increased frequency points and the channel numbers corresponding to the frequency points supportable by the mobile terminal, the channel numbers corresponding to the frequency points where the mobile terminal can reside, when a frequency band level configured on a network side is the same as a frequency band level supportable by the mobile terminal;
a first resident frequency point sequence number determining unit, configured to rank, according to a ranking method the same as that of the base station, channel numbers corresponding to frequency points where the mobile terminal can reside, and determine, based on the number of frequency points where the mobile terminal can reside, a sequence number corresponding to a channel number corresponding to a frequency point where the mobile terminal finally resides by using a hash algorithm;
the base station includes:
a second terminal capability obtaining unit, configured to receive the supportable frequency band level reported by the mobile terminal and the sub-level in the frequency band level, and determine, according to the sub-level in the supportable frequency band level of the mobile terminal, a channel number corresponding to each frequency point that the mobile terminal can support;
a second configuration capability obtaining unit, configured to determine, according to configuration of a network side, channel numbers corresponding to frequency points that can be used by the mobile terminal;
a second frequency point determining unit, configured to determine, when a frequency band level configured on a network side is the same as a frequency band level supportable by the mobile terminal, a channel number corresponding to each frequency point where the mobile terminal can reside according to a channel number corresponding to each frequency point supportable by the mobile terminal and a channel number corresponding to each frequency point usable by the mobile terminal, if a sub-level in the frequency band level supportable by the mobile terminal includes an expansion newly-added frequency band;
and the second resident frequency point sequence number determining unit is used for sequencing the channel numbers corresponding to the frequency points where the mobile terminal can reside according to the same sequencing method as the mobile terminal side, and determining the sequence number corresponding to the channel number corresponding to the frequency point where the mobile terminal can reside finally based on the number of the frequency points where the mobile terminal can reside calculated by the second resident frequency point determining unit through a hash algorithm.
6. The system for acquiring camping frequency point of mobile terminal according to claim 5, wherein the mobile terminal further comprises:
and the network searching unit is used for searching the working frequency point by using the PRL before the capacity expansion of the frequency point after the mobile terminal is started, and receiving the sector parameter message issued by the network side based on the searched working frequency point.
7. The system for acquiring the resident frequency points of the mobile terminal according to claim 5, wherein the first resident frequency point sequence number determining unit and the second resident frequency point sequence number determining unit rank the channel numbers corresponding to the frequency points where the mobile terminal can reside in the order of the channel list information and the extended channel list information, rank the channel numbers corresponding to the frequency points where the mobile terminal can reside in the order from small to large, or rank the channel numbers corresponding to the frequency points where the mobile terminal can reside in the order from large to small.
8. The system for acquiring the resident frequency point of the mobile terminal according to claim 5, wherein the expanded new frequency band is not completely overlapped with other frequency bands in the frequency band class supportable by the mobile terminal.
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| CN103379508B (en) | 2016-02-17 |
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