CN101553024A - Method for realizing home network selection - Google Patents

Abstract

The invention discloses a method for realizing home network selection, including the steps: firstly, collocating an expanded preferable roaming list for a user who orders or signs a home network and adding the system information and/or geological region information of the home network according to the type of a terminal when in collocation; then sending the newly collocated expanded preferable roaming list to a user terminal or writing the newly collocated expanded preferable roaming list into the user terminal when an account is opened and performing network selection by the terminal according to the received newly expanded preferable roaming list. The invention enables the user terminal to perform more proper network selection more accurately and in time according to the basic information and the geological region information of the home network in the expanded preferable roaming list.

Description

A kind of method that realizes that home network is selected

Technical field

The present invention relates to a kind of code division multiple access and insert the method that the home network (Femto Network) in (CDMA) field of wireless communications is selected.

Background technology

Home network (Femto Network) is meant the network of being made up of Home eNodeB (Femto Cell).Home eNodeB is can be with current wireless communication networks common and deposit, extension as the wireless communication networks covering, as replenishing of the covering of the macro base station in the wireless communication networks (Macro Cell), be placed on the scope that building, family or office etc. such as high building apartment cover away from macro base station.Even if in the scope that macro base station can cover, home network also can be used for bearing the peak period of the overload, particularly service traffics of macro base station.In addition, as the extension in family wired broadband, home network can also be connected family wired broadband, by its resource and bandwidth, is services such as domestic consumer by wireless, and this has strengthened wired and faster fusion wireless network.

Therefore, in a zone, have a plurality of networks or system and deposit.The wireless communication networks that with 3G is representative is wider public communication network, and home network is then obviously certain restricted to having access to, and promptly accessing terminal needs to select correct home network.For selecting correct or suitable home network, accessing terminal to need to search for continually preferred (Preferred) Home eNodeB.But search use duration or the life-span that obviously can reduce the battery on accessing terminal greatly continually, particularly in the scope that does not have Home eNodeB to cover, the system of selection that therefore designs a kind of suitable home network just seems most important.

Insert the CDMA technology field at code division multiple access, system's system of selection is normally used to be PreferredRoaming List (PRL-optimizing roaming inventory) method, and PRL is meant the system of current utilization merchant network is existed on the mobile phone according to the form of inventory.PRL extensively is used in IS-95, and cdma20001x network and Do network also are used on the CDMA mobile phone in the whole world widely.This PRL inventory is read and write on user's card or mobile phone when the user opens an account, and also can be loaded on the mobile phone terminal under the aerial download technology by note or OTA (Over-the Air) by network.

Optimizing roaming inventory (PRL, Preferred Roaming List) comprises assists mobile phone to carry out the relevant information of system's selection and capture systems.This inventory can be retained on the mobile phone after mobile phone shutdown.Current techniques comprises that two classes preferentially roam the PRL of inventory: PRL and expansion (Extended PRL).PRL uses the initial stage and designs in present technique.Along with the development of CDMA network of relation technology, this technology has also obtained expansion in various degree, and the PRL inventory that has produced expansion is EPRL.

Wherein Kuo Zhan PRL (being EPRL) has form as shown in table 1 below:

The optimizing roaming inventory territory of Extended Preferred Roaming List Field expansion	Length (bits) length	Note
			PR_LIST_SIZE	16	Preferentially roam the size of inventory, represent the total length of whole preferential roaming inventory;
PR_LIST_ID	16	The roaming inventory identifies earlier;
			CUR_SSPR_P_REV	8	Mobile phone SSPR download version and PRL form, it has relation with corresponding PRL form.
PREF_ONLY	1	Only preferential (Preferred only), this territory is made as system's operation that 1 expression mobile phone is only stipulated in system's table (SYS_TABLE) territory, otherwise, can system's operation outside the system of regulation.
			DEF_ROAM_IND	8	Default roaming indication.
NUM_ACQ_RECS	9	Catch record count, this territory has shown and has been included in capture systems record count in the EXT_ACQ_TABLE table.
			NUM_COMMON_SUBN ET_RECS	9	Record count in Common Subnet Table table.
NUM_SYS_RECS	14	The system log (SYSLOG) counting is made as the system log (SYSLOG) number that is included in the EXT_SYS_TABLE table.
			RESERVED	7	Reserved field, this field can be made as 0 of necessity, are the integral multiples of a byte (octet) to guarantee whole inventory.
EXT_ACQ_TABLE	Variable	Extended acquisition table.
			COMMON_SUBNET_TA BLE	Variable	Common subnet table.
EXT_SYS_TABLE	Variable	Extended system table.
			RESERVED	As needed	Reserved field, this field can be made as 0 of necessity, are the integral multiples of a byte (octet) to guarantee whole inventory.
PR_LIST_CRC	16	Preferential roaming inventory verification and.

Table 1: the formal definition table of the PRL of expansion

Current ERPL just relates to the information such as macro base station of 3G network, but do not relate to the information of the relevant Home eNodeB (Femto Cell) of home network, because it is complete and access terminal and need to select correct home network among the EPRL about the information of home network, will cause mobile phone frequently to search for, make terminal cause the problem that in time to select suitable networks when selecting connecting system.

Summary of the invention

Technical problem to be solved by this invention is, the method that provides a kind of home network to select, be used for solving prior art and access terminal for want of the home network necessary information and can't realize the correct problem of selecting of home network, so that terminal accurately and timely selected suitable networks when selecting connecting system.

The invention provides a kind of method that realizes that home network is selected, comprising:

At first the optimizing roaming inventory of expanding for the user terminal configuration of customization or signatory home network adds domestic network system information and/or geographical area information according to terminal type during configuration;

Then, the optimizing roaming inventory of expansion after the configuration newly is sent to user terminal or writes user terminal when opening an account, carry out network selecting according to the optimizing roaming inventory of the new expansion that is received by described terminal.

Further, when the user terminal of described customization or signatory home network is conventional terminal, then increase system information in the optimizing roaming inventory for the expansion of this conventional terminal configuration, during increase, increase the information that comprises Home eNodeB newly in extended system table and expansion seizure table, the femtocell information that is increased comprises the system banner of home network and relevant frequency range.In extended system table, increase the system banner SID and the network identity NID of relevant Home eNodeB, and be made as its relative importance value the highest; Catch the band information that increases relevant Home eNodeB in the table in corresponding expansion.

Further, the user terminal of described customization or signatory home network is that home network is as can be known during terminal, then increase system information in the optimizing roaming inventory of the expansion of terminal configuration as can be known for this home network, during increase, increase the information that comprises Home eNodeB newly in extended system table and expansion seizure table, the femtocell information that is increased comprises the system banner of home network and relevant frequency range; Also be the geographical area information that this home network increases the home network of signatory or customization as can be known in the optimizing roaming inventory of the expansion of terminal configuration, described geographical area information comprises classes of geographic areas and the ad hoc territory of geographical pattern.In extended system table, increase the system banner SID and the network identity NID of relevant Home eNodeB, and be made as its relative importance value the highest; Catch the band information that increases relevant Home eNodeB in the table in corresponding expansion.

Further, described for this home network comprises that specifically one is used to indicate whether that the geographical specific information that comprises geography information comprises indication territory and geographical specific information territory in the optimizing roaming inventory of the expansion of terminal configuration as can be known, wherein,

Described geographical specific information comprises the indication territory, is used for indicating whether to comprise geographical specific information territory at the optimizing roaming inventory of expansion;

Described geographical specific information territory is used for indicating the particular content of geographical specific information when described geographical specific information comprises that the indication of indication territory comprises this geography specific information territory.

Further, described geographical specific information territory comprises a kind of of following field or their combination:

Sign is ordered in the geographic area temporarily, the geographical position is risen and exhaled number, geographic area sign, geographic area system banner, classes of geographic areas or the ad hoc territory of classes of geographic areas of only using sign, geographical position and the knowledge of PRL relative priority scale, current geographic area array.

Further, described classes of geographic areas comprises based on the area type of the longitude and latitude of Home eNodeB central point of living in and radius with based on two kinds of the area types of the Base Station Identification BSID of macro base station and sector mark Section ID.The ad hoc territory of described classes of geographic areas is used for the geographical area information territory of corresponding different geographic regions type, wherein:

For the zone that adds the radius type with the Home eNodeB longitude and latitude, comprise the longitude in zone in the ad hoc territory of this classes of geographic areas, latitude, height above sea level, radius;

For with the BSID of macro base station and the zone of Section ID definition, comprise corresponding BSID and Section ID in the ad hoc territory of this classes of geographic areas.

Use the present invention, optimizing roaming inventory EPRL to expansion carries out enhancement process, extended system table (Ext System Table) in existing EPRL and expansion are caught table (AcquisitionTable) and are increased the information that comprises Home eNodeB (Femto Cell) newly on the one hand, and the femtocell information that is increased comprises the system banner (SID) and the relevant frequency range of home network.After will strengthening EPRL and being updated to terminal, terminal can be carried out network selecting according to strengthening EPRL, owing to added system and band information about home network in the inventory, makes terminal can promptly and accurately select in the home network of signatory or customization.Further, except the essential information of home network, Home eNodeB, can also increase its geographical area information among the EPRL after enhancing, make that the information granularity is thinner, help more accurately selecting then home network.

Description of drawings

Fig. 1 realizes the method flow diagram that home network is selected in the embodiment of the invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.

The present invention is directed in the selection problem of CDMA network of relation region memory at the home network of Home eNodeB (femto Cell) composition, the method that a kind of home network is selected has been proposed, existing EPRL is strengthened the Home eNodeB user mobile phone is configured the selection that realizes home network, promptly use the method for the EPRL that strengthens, in EPRL, add system information about home network, the network information etc., further, also in the EPRL that strengthens, add geographical area information about home network, the granularity that makes network or system select is littler more accurate, inserts the suitable networks system fast to make things convenient for user terminal.

As shown in Figure 1, in the method that home network of the present invention is selected:

The first step is carried out the enhancing configuration of the EPRL of different modes at dissimilar terminals;

(1) for the conventional terminal of each customization or the home network of having contracted, when EPRL being strengthened configuration, this enhancing is only limited to extended system table among the EPRL (Ext System Table) and expansion seizure table (Acquisition Table) is increased newly the information that comprises Home eNodeB (Femto Cell), and the femtocell information that is increased comprises the system banner (SID) and the relevant frequency range of home network.During specific implementation, in extended system table (Ext System Table), increase the system banner (SID) and the network identity (NID) of relevant Home eNodeB, and be made as its relative importance value the highest; Catch the band information that increases relevant Home eNodeB in the table (Acquisition Table) in corresponding expansion.

(2) for the home network of each customization or the home network of the having contracted terminal mobile phone of cognitive Home eNodeB (promptly support and) as can be known, except extended system table (Ext SystemTable) that need be in EPRL and expansion are caught table (Acquisition Table) carries out similarly strengthening with conventional terminal, can also in EPRL, increase new territory, promptly increase newly and comprise that geographical area information (Geo_Region_Information) territory, this territory are used to provide the user to contract or the inventory of the geographic area of the home network of customization;

Geographical area information (Geo_Region_Information) territory is that EPRL is strengthened and the newly-increased information about home network, and its information that specifically comprises associative list 2 in the back is described in detail.The inventory that this territory provided herein, be meant cognitive Home eNodeB terminal the zone list that may insert, more fine-grained network system in these information such as back and macro base station system, all be included in geographical area information (Geo_Region_Information) territory that increases newly, rather than be included in extended system table (ExtSystem Table) and the expansion seizure table (Acquisition Table).

Geographical area information (Geo_Region_Information) comprises in the territory: classes of geographic areas (GR_Type) and the ad hoc territory of geographical pattern (Geo_Type_Specific_Fields), further comprise more fine-grained domestic network system and relevant macro base station system parameters, these parameters are used for determining and inserting the domestic network system that corresponding user contracts.

Compare conventional terminal for the terminal in (2), except configuration extended system table (Ext SystemTable) and expansion seizure table (Acquisition Table), dispose geographical area information again, this can further increase the accuracy of network selecting, realizes network selecting with thinner granularity.

Second step after the configuration of different terminals having been carried out about the enhancing EPRL of home network, needed by aerial overload (OTA) mechanism that strengthens or short message mechanism the EPRL of enhancing is sent to terminal, also can write in the subscriber card when terminal is opened an account.

In the 3rd step, described different terminals carries out network selecting according to the EPRL that strengthens and gets final product after the EPRL of enhancing that receives at self.

The step that sends to terminal in the said method is to utilize multiple implementation, and OTA technology for example is not herein as restriction of the present invention.In the OTA technology, relate to network model and relevant call flow.For example a kind of basic procedure of realizing can be described below:

(1) disposes home network user E-EPRL (the expansion optimum roaming list of the enhancing) database that is similar to " macro base station " EPRL database in the 3G network at cdma network, two common OTA configuration servers of control of database (OTA Provisioning Server can fit together with Call center usually) carry out the mutual of related download business.

(2) the business configuration function of OTA configuration server and OTA (OTAF:Over-the-AirService Provisioning Function) is mutual, to realize the download of the relevant E-EPRL of terminal.

(3) download or the renewal of the E-EPRL that then initiates with the mutual support terminal of the switch of circuit domain or network of OTAF.

In the said method, for the home network of each customization or the home network of the having contracted terminal mobile phone of cognitive Home eNodeB (promptly support and) as can be known, in EPRL newly-increased comprise geographical area information (Geo_Region_Information) territory after, increased by two territories of GEO_INFO_INCL and Geo_Region_Information in the ERPL structure after the enhancing, corresponding two fields that increase as shown in table 2 are " GEO_INFO_INCL " and " GEO_Specific Info Field ".EPRL after the enhancing is that the structure of E-EPRL is as shown in table 2:

Wherein, GEO_INFO-INCL is defined as: " geographical specific information comprises indication ", if comprise " GEO_Specific Info Field " territory among the EPRL, then this territory is made as ' 1 ', otherwise is made as ' 0 ';

Wherein, GEO_Specific Info Field is defined as: " geographical specific information territory ", if and only if when GEO_INFO_INCL is designated ' 1 ', just comprises this territory among the PRL of described expansion, comprises the concrete form of geographical specific information in this GEO_Specific Info Field territory.Be elaborated below in conjunction with table 2.

Include, but are not limited to following information in the specific information territory, geographical position (GEO_Specific Info Field):

(1) sign (Geo Region Temporary Subscription Flag) is ordered in the geographic area temporarily,

This sign shows whether terminal is allowed to provide occasional service in this geographic area.If allow, then be made as 1, otherwise be made as 0.For example a user comes from the other places roaming, can order the business of current region temporarily, treats that interim business of ordering has also just been cancelled in the local time that he leaving this.Also for example the user has gone to such places such as Startbuck, and interim the order surfed the Net, and order interim after leaving is just cancelled naturally.From above-mentioned two scenes, just need this geographic area to order temporarily and indicate the current occasional service that whether allows.

The optimizing roaming inventory territory of Extended Preferred Roaming List Field expansion	Length (bits) length	Note
			PR_LIST_SIZE	16
PR_LIST_ID	16
			CUR_SSPR_P_REV	8
PREF_ONLY	1
			DEF_ROAM_IND	8
NUM_ACQ_RECS	9
			NUM_COMMON_SUBNET_RECS	9
NUM_SYS_RECS	14
			RESERVED	7
EXT_ACQ_TABLE	Variable
			COMMON_SUBNET_TABLE	Variable
EXT_SYS_TABLE	Variable
			GEO_INFO-INCL	1	Geographical specific information comprises indication, if comprise " GEO_Specific Info Field " territory, then this territory is made as ' 1 ', otherwise is made as ' 0 '.
GEO_Specific Info Field	Variable	Geographical specific information territory.And if only if comprises this territory when GEO_INFO_INCL is designated ' 1 '.It comprises the concrete form of geographical specific information.
			RESERVED	As needed
PR_LIST_CRC	16

Table 2: the PRL of the expansion after strengthening among the present invention is the definition list of E-EPRL

(2) geographical position is risen to exhale and is only used sign (Geo Region Origination Only Flag),

Whether the coverage that this sign is presented at current distribution allows terminal only to make a call, if terminal only allows to initiate paging in institute's assigned region, then is made as 1, otherwise is made as 0;

(3) geographical position and PRL relative priority scale are known (GR PRL Relative Priority flag),

This sign is made as represented that the geographic area will occupy preferentially than the EPRL that provides in system table and the seizure table at 1 o'clock, when the bandwidth of determining scanning and frequency (bands/frequencies), when particularly using together with other technologies, compare with EPRL, terminal has higher relative importance value according to the inventory that geographic area (GR) internal information obtains.When its value is set to 0, the EPRL/PRL that provides in expression system table and the seizure table accounts for relative importance value than the inventory that geographic area (GR) internal information obtains, in bandwidth and the frequency (bands/frequencies) of determining scanning, when particularly using together with other technologies, compare with GR, terminal will provide the inventory of higher relative importance value in the EPRL;

(4) number of current geographic area array (Current number of Geo Region entries);

Can set the corresponding zone of area array, in order to the number of the area array of sign current region correspondence.

(5) geographic area sign (Geo Region ID),

Geo Region ID is the number of identified geographic region, is used in air interface and transmits this information, makes that terminal and network can both cognitive each other geographic areas.

(6) geographic area system banner (Geo Region System ID),

The system banner of being correlated with in the geographic area, it and geographic area identify certain system of geography of unique identification.Because should have a plurality of systems in the zone, so it is used for certain system in a zone of unique identification.

(7) classes of geographic areas (Geo Region Type),

This classes of geographic areas comprises based on the area type of the longitude and latitude of Home eNodeB central point of living in and radius with based on two kinds of the area types of the Base Station Identification (BSID) of macro base station and sector mark (Section ID).Simplifying type is following two kinds (orders in no particular order):

● add the zone of radius definition with the longitude and latitude of Home eNodeB

● with the BSID and the Section ID defined range of macro base station.

(8) the ad hoc territory of classes of geographic areas (Geo Region Type specific fields) is used for the geographical area information territory of corresponding different geographic regions type.

Such as the zone that adds the radius type with the Home eNodeB longitude and latitude, comprise the longitude in zone in the type information field, latitude, height above sea level, radius etc.

BSID and Section ID defined range with macro base station comprises corresponding BSID and Section ID for another example.

In above-mentioned every territory, in the information that comprises among the Geo_Region_Information, the most important thing is classes of geographic areas territory (GR_Type) and the ad hoc territory of geographical pattern (Geo_RegionType_Specific_Fields).

The home network that the present invention is directed to the network technology focus is selected problem, has proposed to realize by the mode that strengthens the PRL that expands the system of selection of home network.Based on the evolution and the compatible aspect of following home network, it is simple to have method, easily the characteristics that realize.

Described herein is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Therefore, all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improve and upgrade or the like, all should be included within protection scope of the present invention.

Claims (9)

1, a kind of method that realizes that home network is selected is characterized in that:

At first the optimizing roaming inventory of expanding for the user terminal configuration of customization or signatory home network adds domestic network system information and/or geographical area information according to terminal type during configuration;

Then, the optimizing roaming inventory of expansion after the configuration newly is sent to user terminal or writes user terminal when opening an account, carry out network selecting according to the optimizing roaming inventory of the new expansion that is received by described terminal.

2, the method for claim 1 is characterized in that,

When the user terminal of described customization or signatory home network is conventional terminal, then increase system information in the optimizing roaming inventory for the expansion of this conventional terminal configuration, during increase, increase the information that comprises Home eNodeB newly in extended system table and expansion seizure table, the femtocell information that is increased comprises the system banner of home network and relevant frequency range.

3, method as claimed in claim 2 is characterized in that,

In extended system table, increase the system banner SID and the network identity NID of relevant Home eNodeB, and be made as its relative importance value the highest;

Catch the band information that increases relevant Home eNodeB in the table in corresponding expansion.

4, the method for claim 1 is characterized in that,

The user terminal of described customization or signatory home network is that home network is as can be known during terminal, then increase system information in the optimizing roaming inventory of the expansion of terminal configuration as can be known for this home network, during increase, increase the information that comprises Home eNodeB newly in extended system table and expansion seizure table, the femtocell information that is increased comprises the system banner of home network and relevant frequency range; Also be the geographical area information that this home network increases the home network of signatory or customization as can be known in the optimizing roaming inventory of the expansion of terminal configuration, described geographical area information comprises classes of geographic areas and the ad hoc territory of geographical pattern.

5, method as claimed in claim 4 is characterized in that,

In extended system table, increase the system banner SID and the network identity NID of relevant Home eNodeB, and be made as its relative importance value the highest;

Catch the band information that increases relevant Home eNodeB in the table in corresponding expansion.

6, method as claimed in claim 4 is characterized in that,

Described for this home network comprises that specifically one is used to indicate whether that the geographical specific information that comprises geography information comprises indication territory and geographical specific information territory in the optimizing roaming inventory of the expansion of terminal configuration as can be known, wherein,

Described geographical specific information comprises the indication territory, is used for indicating whether to comprise geographical specific information territory at the optimizing roaming inventory of expansion;

Described geographical specific information territory is used for indicating the particular content of geographical specific information when described geographical specific information comprises that the indication of indication territory comprises this geography specific information territory.

7, method as claimed in claim 6 is characterized in that, described geographical specific information territory comprises a kind of of following field or their combination:

Sign is ordered in the geographic area temporarily, the geographical position is risen and exhaled number, geographic area sign, geographic area system banner, classes of geographic areas or the ad hoc territory of classes of geographic areas of only using sign, geographical position and the knowledge of PRL relative priority scale, current geographic area array.

8, as claim 4 or 7 described methods, it is characterized in that,

Described classes of geographic areas comprises based on the area type of the longitude and latitude of Home eNodeB central point of living in and radius with based on two kinds of the area types of the Base Station Identification BSID of macro base station and sector mark Section ID.

9, method as claimed in claim 8 is characterized in that,

The ad hoc territory of described classes of geographic areas is used for the geographical area information territory of corresponding different geographic regions type, wherein:

For the zone that adds the radius type with the Home eNodeB longitude and latitude, comprise the longitude in zone in the ad hoc territory of this classes of geographic areas, latitude, height above sea level, radius;

For with the BSID of macro base station and the zone of Section ID definition, comprise corresponding BSID and Section ID in the ad hoc territory of this classes of geographic areas.

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