CN106714135A - Dynamic k step user position updating method facing low earth orbit satellite system - Google Patents
Dynamic k step user position updating method facing low earth orbit satellite system Download PDFInfo
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- CN106714135A CN106714135A CN201611244089.1A CN201611244089A CN106714135A CN 106714135 A CN106714135 A CN 106714135A CN 201611244089 A CN201611244089 A CN 201611244089A CN 106714135 A CN106714135 A CN 106714135A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/16—Mobility data transfer selectively restricting mobility data tracking
Abstract
The invention discloses a dynamic k step user position updating method facing a low earth orbit satellite system. A user terminal is turned on for registration operation, and is used for registration in a VLR of a gateway station, to which a current position area belongs. The VLR is used to allocate a temporary user identity number to a user randomly, and an identity identification number of a satellite is determined, and an identity identification number of a satellite wave beam is determined, until the current VLR is used to transmit the information of the user registration to a home location register. The home location register is used for the registration of the user initial information after the receiving of the information, and the user identity number UID and the visitor location register identity number VID of the user are written. The dynamic k step user position updating method is advantageous in that problems of low earth orbit satellite systems such as complicated management and large position updating costs are solved; and at the same time, the value of K is changed dynamically by aiming at the users having different priorities according to the speeds of the different users and characteristics like frequent handover, and therefore the position updating costs are further optimized, the QoS requirements of the different users are considered, and the total QoS is improved.
Description
Technical field
The invention belongs to technical field of satellite communication, it is related to a kind of dynamic k step users position for being applied to LEO Satellite
Put update method.
Background technology
Relative to middle rail satellite system high, LEO Satellite has the advantages that their own：Propagation delay time is small, loss
It is low, more fully coverage rate etc..But because the speed of service of LEO Satellite Satellite is fast, user's visual time is few, and
Also in movement, this causes location management very complicated to user, the expense increase of location management.On the other hand, due to low orbit satellite system
The user types of system increase, and cause the demand of various users different, and the single Location Management of tradition cannot meet many
Plant the QoS (Quality of Service, service quality) of user.Therefore the location management for how reducing LEO Satellite is opened
Pin, and ensure the overall QoS of user, this has important Research Significance to the operational efficiency for improving LEO Satellite.
The content of the invention
The present invention relates to a kind of user position update strategy for being applied to LEO Satellite.For existing low orbit satellite system
The location management expense of system is big, polytype user simultaneously in the presence of, a kind of Qos relatively low shortcoming of user's entirety, it is proposed that face
User position update strategy is walked to the dynamic k of LEO Satellite, in location updating according to user characteristics and user priority
The features such as level, dynamic adjustment VLR Visitor Location Register updates the length of pointer chain, has both reduced total location management expense, also ensures
The different demands of various users, improve user's entirety QoS.
To reach above-mentioned purpose, technical scheme proposed by the present invention is the dynamic k step users position towards LEO Satellite
Update method is put, is comprised the steps of：
Step 1：User terminal is started shooting, and three bit in user terminal location renewal controller puts 1, initiates registration
Operation, is registered to the VLR in the gateway station belonging to present position-region；
Step 2：Current VLR receives the registration of user, is that user is randomly assigned the identification card number of interim user, root
The authentication number of satellite is determined according to the satellite where user terminal, the satellite beams according to where user terminal determine satellite ripple
The authentication number of beam, the real-time speed parameter V according to user, frequently more distinctive emblem position F and User Priority grade S, by with
Lower formula calculates the value of k：
K=f (S, V, F)=V+F+S+1；
Step 3：Current VLR sends the information of user's registration to attaching position register, and attaching position register is received
User's initial information is registered after information, fills in the authentication UID of user, and vision location where user is posted
Storage VID；
Step 4：After user's registration is finished, three bit in the location updating controller of user terminal is resetted, i.e.,
Set to 0, into circulation；
Step 5：When user leaves present position-region, i.e., user terminal first bit is 1 and second bit and the
When at least one is 1 in three bit, launch position is updated, and letter is carried out to the VLR in the gateway station belonging to present position-region
Breath updates；
Step 6：Current VLR receives the information of user, judges whether the UID of user has been present, if the UID of user is
In the presence of, then update user profile to VLR, that is, update and finish, otherwise jump to step 7；
Step 7：User registers user's current information to new current VLR, and the forwarding pointer PREV in current VLR is pointed to
The VLR that last time updates, and the information of user in previous VLR is deleted, judge whether current pin chain length reaches k, if small
Then updated in k and finished, otherwise jump to step 8；
Step 8：Current VLR pointer chain lengths reach k, judge the current speed parameter V of user, and it is current whether frequently
Whether numerous more distinctive emblem position F changes, and whether VLR is marked according to current speed parameter V, and current area of frequently getting over if changing
Will position F recalculates the value of k, points to the last VLR for updating by PREV pointers, and delete the letter of user in previous VLR
Breath, current VLR carries out user profile renewal to attaching position register；
Step 9：Current VLR sends the information of user's registration to attaching position register, and attaching position register is received
User's initial information is registered after information, fills in the authentication UID of user, and vision location where user is posted
Storage VID；
Step 10：Circulation is completed, step 4 is gone to.
Further, above-mentioned user terminal location updates controller, and difference can be received all the time for the user terminal in network
The position area identification code sent by gateway station and satellite broadcasting, when when Liang Ge positions area identification code, one of them changes, uses
Family terminal just carries out location update operations, and renewal is arranged on updating of terminal position controller on the subscriber terminal.
Further, three bit, first bit expression user terminal are set up on above-mentioned updating of terminal position controller
Whether the position area identification code of broadcast is have received, 1 is put if receiving, otherwise set to 0；Second bit represents satellite broadcasting
Whether position area identification code changes, and 1 is put if changing, and otherwise sets to 0；The 3rd bit position area for representing gateway station broadcast
Whether identification code changes, and 1 is put if changing, and otherwise sets to 0, only when in the location updating controller of user terminal, when first
Individual flag bit is that 1, the second and the three bit at least one bit ability launch position renewal when being 1 is operated.
Speed parameter V therein is divided：When user's real-time speed is 0km/h~25km/h, the user is low
Fast user, V takes 0；When user's real-time speed is 25km/h~250km/h, the user is middling speed user, and V takes 1；When user's reality
When Shi Sudu is more than 250km/h, the user is highspeed user, and V takes 2.
Flag bit F is that 1 expression user is frequently to get over area user, if it is not frequently to get over area user that F is 0 expression user.
When user is high priority, S is 0, and when user is middle priority, S is 1, and when user is low priority, S is 2.
The beneficial effects of the present invention are：
1, because low orbit satellite is fast relative to ground handling speed, cause user terminal short to visual time of satellite etc. and ask
Topic, so the location management of LEO Satellite is more complicated relative to middle rail satellite high, the expense of location management is also bigger.This
The location Update Strategy of the VLR Visitor Location Register pointer chain length dynamically changeable for proposing is invented, traditional position is not only solved
In more new strategy, updating will update to HLR every time from VLR, the very big problem of the signaling consumption of long-distance transmissions.Improve again
In the location Update Strategy of fixed VLR Visitor Location Register pointer chain length, the frequency of user position update is defined, it is impossible to dynamic
The various types of user position update demands of state adjustment, it is impossible to ensure the problem of the overall QoS demand of user.
2, the present invention is for the big problem of the location updating expense of traditional location update method, it is proposed that dynamic k steps update
Strategy.According to the different qualities of different user, and the parameter such as User Priority, enter the pointer chain length that Mobile state adjustment updates
Degree, not only further optimizes the expense of location updating, and the different demands of different user have been taken into account again, improves total user
QoS。
Brief description of the drawings
Tu1Shi cross-locations area schematic diagram.
Fig. 2 is the location updating schematic diagram when k is 4.
Fig. 3 is architectural schematic.
Fig. 4 is the flow chart that dynamic k walks location Update Strategy.
Specific embodiment
In conjunction with accompanying drawing, the present invention will be further described in detail.
Selection on position area：
For the division in the position area of low orbit satellite, static position area and dynamic position area are broadly divided into.Static position area
Selection is main to be had by the division of user's geographic location area, is divided by satellite coverage area, is divided by gateway station overlay area, by letter
Close the overlay area being combined with satellite of standing and divide these four modes.The dynamic band of position divides the main position for having and being based on movement
Put Division, time-based position Division, based on the position Division that the mobile and time is combined, the position based on distance
Division these four modes.
Optimized present invention is generally directed to the location Update Strategy in LEO Satellite location management, due to dynamic
Position area needs user terminal to introduce the functions such as timer, counter in itself, and this can aggravate the burden of user terminal, reduces user
The flexibility of terminal, and the complexity of location management can also increased, realizes that difficulty is big, thus it is of the invention be considered as it is quiet
The position area of state.And in the position area of static state, by the division of user's geographic location area, it is necessary to know the longitude and latitude of user, need
Introducing GPS etc. carries out auxiliary renewal, increases location management expense and complexity.Based on the position that satellite coverage area is divided
Area, needs all gateway station overlay areas in paging satellite coverage during paging, paging expense is very big.Covered based on gateway station
The position area that cover area is divided, needs paging gateway station correspondence all of satellite coverage area during paging, paging expense is still very
Greatly.So the present invention is considered using the overlay area dividing mode being combined by gateway station and satellite, as long as paging one during paging
Individual gateway station and a satellite coverage area, on the basis of it ensure that paging expense, also meet location management complexity low
It is required that.The overlay area dividing mode being combined based on gateway station and satellite is as shown in figure 1, be the current of service user from A to B
Satellite changes and causes the change in user's belonging positions area, and causes use for the current gateway station of service user changes from B to C
The change in family belonging positions area.
Divided on user type and User Priority：
User type is broadly divided into low speed user, middling speed user, highspeed user, frequent more area user.Wherein low speed user
Be be almost relative to ground speed 0 user, or only in the gateway station coverage where itself activity user, it is such as solid
Determine terminal user, terminal user of small range movement etc..Middling speed user is the user of medium speed, such as bus, motorcycle,
Electric motor car etc..Highspeed user is the user moved relative to ground surface high speed, and direction hardly occurs big change, like flying
Machine, high ferro, guided missile etc..Frequently more area user refers in two intersections of gateway station coverage, and is frequently back and forth transported
Dynamic user, such as comes and goes bus, the mobile terminal of back and forth movement.
The priority level of user is divided into Three Estate：High-priority users, middle priority users and low priority user.
Wherein high-priority users, it is necessary to assure its real-time for updating, such as military weapon, aircraft, disaster urgency communication terminal.In
Priority users are mainly some common mobile terminals, such as cell phone, the bus network terminal.The use of low priority
Family is the user very low to delay requirement, such as smart motion bracelet.
Database model on location updating：
In the present invention, location updating database model uses two-layer database model, total attaching position register
(HLR, Home Location Register), and VLR Visitor Location Register (VLR, Visitor Location
Register).The two registers are all placed on specific gateway station, and whole system sets a HLR, and each is believed
Close station and one VLR is set.
The original positional information of all users is store in HLR, including whether user is already powered on registration, the body of user
Identification card number (VID, the Visitor of visit register where part card number (UID, User Identification), user
Identification)。
Store the specifying information of gateway station where user in VLR, including user UID, the authentication of place satellite
The authentication number of the specific satellite beams in satellite where number (SID, Satellite Identification), and user
(BID,Beam Identification).User is constituted by the BID combinations of the SID of place satellite, and place satellite beams
Real-time position information, most fine-grained customer position information that memory can indicate also has been accurate to the scope of wave beam for this.
On location Update Strategy：
The location Update Strategy of traditional two-layer database：When user is updated, first to the VLR being currently located
It is updated, is updated to HLR if VLR does not change, if VLR has changed, then current VLR is updated to HLR
After, the VLR before HLR is reinformed is deleted user profile.When so causing to update every time will from VLR to
The signalling of HLR long ranges, the expense of location updating is very big.
Fixed VLR Visitor Location Register updates the user position update strategy of pointer chain length：User carries out position to VLR
During renewal, such as when pointer chain length is 4, as shown in Fig. 2 when the VLR belonging to user moves to VLR1 from VLR0, only need to
VLR1 is updated, and then the forwarding pointer PREV of VLR1 points to VLR0, without entering to HLR from affiliated VLR every time
Row long distance transmission updates.When renewal pointer chain length reaches 4, (VLR0- when moving to VLR3 from VLR0>VLR1->
VLR2->VLR3) just need to carry out, be that VLR3 is updated to HLR from affiliated VLR, i.e., current pointer chain head node just becomes
It is VLR3.Only when renewal pointer chain length is reached, just need to be updated from the VLR belonging to current to HLR, substantially reduce position
The expense of renewal is put, but fixed VLR Visitor Location Register updates pointer chain length, defines that user profile reaches ownership position
Across the number of VLR Visitor Location Register when putting register, cause the time delay of the foundation calling of different user can not be according to user's
Characteristic flexibly changes, and is unfavorable for the balance of the QoS demand of the different qualities user different with priority requirements, as shown in Figure 2.
Traditional two-layer database location updates tactful location updating expense greatly, and fixed VLR Visitor Location Register updates pointer
The location Update Strategy of chain length cannot meet the QoS demand of different qualities user.The present invention proposes that a kind of dynamic changes visit
Location register updates user's more new strategy of pointer chain length, according to the change of user personality, dynamically changes renewal
The value of pointer chain length.In the case where different user QoS demand is met, the expense of location updating is reduced.
Pointer chain length computation is updated on dynamic VLR Visitor Location Register：
Assuming that the length of the renewal pointer chain of VLR Visitor Location Register is k, k values are set primarily to solving original two-layer
Database update modal position updates the big problem of expense.When k is bigger, user needs the frequency to HLR renewals lower, more
New expense is also just smaller.And k gets over hour, user need to HLR update frequency it is higher, the expense of renewal is also bigger.
But when k values are excessive, although the expense very little of renewal, but it is excessive that user can be caused to set up the time delay for calling.Different user pair
The requirement of time delay is different, so should weigh various factors to determine the value of k.
K value computing formula are given below：
K=f (S, V, F)=V+F+S+1
Wherein V is speed parameter, is divided according to actual speed.When user's real-time speed is 0km/h~25km/h, the use
Family is low speed user, and V takes 0；When user's real-time speed is 25km/h~250km/h, the user is middling speed user, and V takes 1；When
When user's real-time speed is more than 250km/h, the user is highspeed user, and V takes 2.Flag bit F is used for representing whether user is frequency
Fan Yue areas user, if it is frequently to get over area user that F is equal to 1 expression user, if it is not frequently to get over area user that F is 0 expression user.
S is the priority of user, and when user is high priority, S is 0, and when user is middle priority, S is 1, when user is low preferential
S is 2 during level.
On position model storage organization：
In the present invention, store the original positional information of all users in HLR, including user whether start-up logging mark
Will position TS, and user UID, the VID of visit register where user.Represent that user terminal is already powered on and notes during TS=1
Volume, represents that user is in unregistered state during TS=0.
The specifying information of gateway station where user, including user interim UID, the SID of place satellite are store in VLR,
And the BID of the corresponding satellite beams of place satellite.It is made up of the BID combinations of the SID of place satellite, and place satellite beams
Most fine-grained user's real-time position information that memory can indicate, has been accurate to the scope of wave beam.In order to realize dynamic
K step more new strategy, in each VLR also have two addresses of the specific VLR of pointer representation, represented with PREV and NEXT respectively, use
To point to the most recently updated VLR of user terminal, NEXT is used for pointing to the next VLR to be updated of user.
User terminal in a network can receive the position area identification code of broadcast all the time, respectively by gateway station and satellite broadcasting
Send.When Liang Ge positions area identification code, one of them changes, user terminal will carry out location update operations.Consider
One updating of terminal position controller is set on user terminal, three bit is set up on controller.First bit represents use
Whether family terminal have received the position area identification code of broadcast, and 1 is put if receiving, and otherwise set to 0.Second bit expression satellite
Whether the position area identification code of broadcast changes, and 1 is put if changing, and otherwise sets to 0.3rd bit represents gateway station broadcast
Whether position area identification code changes, and 1 is put if changing, and otherwise sets to 0.Only when in the location updating controller of user terminal,
When first flag bit be 1, the second and the three bit at least one bit be 1 when the renewal of ability launch position operate.
Dynamic k towards LEO Satellite walks user position update strategy based on LEO Satellite, and low rail
The architecture of satellite system includes satellite segments, air distance, ground segment.Satellite segments include the inter satellite link of each satellite composition,
Air distance is including civil aircraft, military aircraft, ordnance missile etc..Ground segment includes civilian gateway station, military gateway station, individual eventually
End, car-mounted terminal, Shipborne terminal etc..As shown in Figure 3.
The present invention proposes to walk user position update strategy towards the dynamic k of LEO Satellite, different for different user
Characteristic and different priorities, it is dynamic to change the length that VLR Visitor Location Register updates pointer chain, location updating can be reduced
Overhead, also can guarantee that the QoS of various different qualities users, and specifically more new technological process is as shown in Figure 4.
Step 1：User terminal is started shooting, and three bit in the location updating controller of user terminal is all put 1, initiates note
Volume operation, is registered to the VLR in the gateway station belonging to present position-region.
Step 2：Current VLR receives the registration of user, is that user is randomly assigned an interim user UID, according to user
Satellite where terminal determines SID, and the satellite beams according to where user terminal determine BID.Real-time speed ginseng according to user
Number V, frequently more distinctive emblem position F and User Priority grade S is calculated the value of k by formula.Computing formula is as follows：
K=f (S, V, F)=V+F+S+1
Step 3：Current VLR sends the information of user's registration to HLR, and HLR enters after receiving information to user's initial information
Row registration, fills in the authentication UID of user, and the VLR Visitor Location Register VID where user.
Step 4：After user's registration is finished, three bit in the location updating controller of user terminal is resetted, i.e.,
Set to 0, into circulation.
Step 5：When user leaves present position-region, i.e., user terminal first bit is 1 and second bit and the
When at least one is 1 in three bit, launch position is updated, and letter is carried out to the VLR in the gateway station belonging to present position-region
Breath updates.
Step 6：Current VLR receives the information of user, judges whether the UID of user has been present, if the UID of user is
In the presence of, then update user profile to VLR, that is, update and finish.Otherwise jump to step 7.
Step 7：User registers user's current information to new current VLR, and the forwarding pointer PREV in current VLR is pointed to
The VLR that last time updates, and the information of user in previous VLR is deleted, judge whether current pin chain length reaches k, if small
Then updated in k and finished, otherwise jump to step 8.
Step 8：Current VLR pointer chain lengths reach k, judge the current speed parameter V of user, and it is current whether frequently
Whether numerous more distinctive emblem position F changes, and whether VLR is marked according to current speed parameter V, and current area of frequently getting over if changing
Will position F recalculates the value of k.The last VLR for updating is pointed to by PREV pointers, and deletes the letter of user in previous VLR
Breath.Current VLR carries out user profile renewal to HLR.
Step 9：Current VLR sends the information of user's registration to HLR, and HLR enters after receiving information to user's initial information
Row registration, fills in the authentication UID of user, and the VLR Visitor Location Register VID where user.
Step 10：Circulation is completed, step 4 is gone to.
The present invention proposes a kind of dynamic k towards LEO Satellite and walks user position update strategy, in location updating
When according to the features such as user characteristics and User Priority, dynamic adjustment VLR Visitor Location Register update pointer chain length, both
Reduce total location management expense, also ensure the different demands of various users, improve user's entirety QoS.
Step 1：User terminal is started shooting, and three bit in the location updating controller of user terminal is all put 1, initiates note
Volume operation, is registered to the VLR in the gateway station belonging to present position-region.
Step 2：Current VLR receives the registration of user, is that user is randomly assigned an interim user UID, according to user
Satellite where terminal determines SID, and the satellite beams according to where user terminal determine BID.Real-time speed ginseng according to user
Number V, frequently more distinctive emblem position F and User Priority grade S is calculated the value of k by formula.Computing formula is as follows：
K=f (S, V, F)=V+F+S+1
Step 3：Current VLR sends the information of user's registration to HLR, and HLR enters after receiving information to user's initial information
Row registration, fills in the authentication UID of user, and the VLR Visitor Location Register VID where user.
Step 4：After user's registration is finished, three bit in the location updating controller of user terminal is resetted, i.e.,
Set to 0, into circulation.
Step 5：When user leaves present position-region, i.e., user terminal first bit is 1 and second bit and the
When at least one is 1 in three bit, launch position is updated, and letter is carried out to the VLR in the gateway station belonging to present position-region
Breath updates.
Step 6：Current VLR receives the information of user, judges whether the UID of user has been present, if the UID of user is
In the presence of, then update user profile to VLR, that is, update and finish.Otherwise jump to step 7.
Step 7：User registers user's current information to new current VLR, and the forwarding pointer PREV in current VLR is pointed to
The VLR that last time updates, and the information of user in previous VLR is deleted, judge whether current pin chain length reaches k, if small
Then updated in k and finished, otherwise jump to step 8.
Step 8：Current VLR pointer chain lengths reach k, judge the current speed parameter V of user, and it is current whether frequently
Whether numerous more distinctive emblem position F changes, and whether VLR is marked according to current speed parameter V, and current area of frequently getting over if changing
Will position F recalculates the value of k.The last VLR for updating is pointed to by PREV pointers, and deletes the letter of user in previous VLR
Breath.Current VLR carries out user profile renewal to HLR.
Step 9：Current VLR sends the information of user's registration to HLR, and HLR enters after receiving information to user's initial information
Row registration, fills in the authentication UID of user, and the VLR Visitor Location Register VID where user.
Step 10：Circulation is completed, step 4 is gone to.
Claims (6)
1. the dynamic k towards LEO Satellite walks method for user position update, it is characterised in that comprise the steps of：
Step 1：User terminal is started shooting, and three bit in user terminal location renewal controller puts 1, initiates registration operation,
Registered to the VLR in the gateway station belonging to present position-region；
Step 2：Current VLR receives the registration of user, is that user is randomly assigned the identification card number of interim user, according to
Satellite where the terminal of family determines the authentication number of satellite, and the satellite beams according to where user terminal determine satellite beams
Authentication number, the real-time speed parameter V according to user frequently gets over distinctive emblem position F and User Priority grade S, by following public affairs
Formula calculates the value of k：
K=f (S, V, F)=V+F+S+1；
Step 3：Current VLR sends the information of user's registration to attaching position register, and attaching position register receives information
User's initial information is registered afterwards, fills in the authentication UID of user, and the VLR Visitor Location Register where user
Number VID；
Step 4：After user's registration is finished, three bit in the location updating controller of user terminal is resetted, that is, set to 0,
Into circulation；
Step 5：When user leaves present position-region, i.e., user terminal first bit is 1 and second bit and the 3rd
When at least one is 1 in bit, launch position is updated, and row information is entered more to the VLR in the gateway station belonging to present position-region
Newly；
Step 6：Current VLR receives the information of user, judges whether the UID of user has been present, if the UID of user has been deposited
, then update user profile to VLR, that is, update and finish, otherwise jump to step 7；
Step 7：User registers user's current information to new current VLR, and the forwarding pointer PREV in current VLR is pointed into upper one
The VLR of secondary renewal, and the information of user in previous VLR is deleted, judge whether current pin chain length reaches k, if less than k then
Renewal is finished, and otherwise jumps to step 8；
Step 8：Whether current VLR pointer chain lengths reach k, judge the current speed parameter V of user, and current frequently get over
Whether distinctive emblem position F changes, and whether what VLR was according to current speed parameter V and current if changing frequently gets over distinctive emblem
F recalculates the value of k, and the VLR of last renewal is pointed to by PREV pointers, and deletes the information of user in previous VLR, when
Preceding VLR carries out user profile renewal to attaching position register；
Step 9：Current VLR sends the information of user's registration to attaching position register, and attaching position register receives information
User's initial information is registered afterwards, fills in the authentication UID of user, and the VLR Visitor Location Register where user
Number VID；
Step 10：Circulation is completed, step 4 is gone to.
2. the dynamic k towards LEO Satellite according to claim 1 walks method for user position update, it is characterised in that
The user terminal location updates controller, can be received all the time for the user terminal in network wide by gateway station and satellite respectively
The position area identification code broadcast out, when when Liang Ge positions area identification code, one of them changes, user terminal just carries out position
Operation is updated, renewal is arranged on updating of terminal position controller on the subscriber terminal.
3. the dynamic k towards LEO Satellite according to claim 1 walks method for user position update, it is characterised in that
Three bit is set up on the updating of terminal position controller, first bit represents whether user terminal have received broadcast
Position area identification code, puts 1 if receiving, and otherwise sets to 0；Second bit expression satellite broadcasting position area identification code whether
Change, 1 is put if changing, otherwise set to 0；Whether the 3rd bit position area identification code for representing gateway station broadcast changes, such as
Fruit changes then puts 1, otherwise sets to 0, only when in the location updating controller of user terminal, when first flag bit is 1, the second He
3rd bit at least one bit ability launch position when being 1 updates operation.
4. the dynamic k towards LEO Satellite according to claim 1 walks method for user position update, and its feature exists
In being divided to speed parameter V therein：When user's real-time speed is 0km/h~25km/h, the user uses for low speed
Family, V takes 0；When user's real-time speed is 25km/h~250km/h, the user is middling speed user, and V takes 1；When user is fast in real time
Spend during for more than 250km/h, the user is highspeed user, V takes 2.
5. the dynamic k towards LEO Satellite according to claim 1 walks method for user position update, and its feature exists
In flag bit F is that 1 expression user is frequently to get over area user, if it is not frequently to get over area user that F is 0 expression user.
6. the dynamic k towards LEO Satellite according to claim 1 walks method for user position update, and its feature exists
In when user is high priority, S is 0, and when user is middle priority, S is 1, and when user is low priority, S is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244089.1A CN106714135B (en) | 2016-12-29 | 2016-12-29 | Low-orbit satellite system-oriented dynamic k-step user position updating method |
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| CN109660293A (en) * | 2019-03-05 | 2019-04-19 | 航天恒星科技有限公司 | For determining the method, equipment and storage device in Low-Orbit Satellite Communication system position area |
| CN110149693A (en) * | 2019-04-22 | 2019-08-20 | 熊猫电子集团有限公司 | The calculating and update method of satellite mobile communication network, system, periodic location update duration |
| CN112995912A (en) * | 2021-03-08 | 2021-06-18 | 军事科学院系统工程研究院网络信息研究所 | Position updating method for multi-beam satellite mobile communication system |
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| CN113825140A (en) * | 2021-09-03 | 2021-12-21 | 天地信息网络研究院(安徽)有限公司 | User mobility management method in satellite communication |
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| CN117833998A (en) * | 2024-03-04 | 2024-04-05 | 广东世炬网络科技有限公司 | Ground cell determining method, device, equipment and medium based on ground station |
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| CN109660293A (en) * | 2019-03-05 | 2019-04-19 | 航天恒星科技有限公司 | For determining the method, equipment and storage device in Low-Orbit Satellite Communication system position area |
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| CN110149693A (en) * | 2019-04-22 | 2019-08-20 | 熊猫电子集团有限公司 | The calculating and update method of satellite mobile communication network, system, periodic location update duration |
| CN110149693B (en) * | 2019-04-22 | 2020-09-18 | 熊猫电子集团有限公司 | Satellite mobile communication network, system, and method for calculating and updating periodic position updating duration |
| WO2022001173A1 (en) * | 2020-07-02 | 2022-01-06 | 凯睿星通信息科技(南京)股份有限公司 | Satellite-ground cooperative paging method and device for satellite communication system |
| CN112995912A (en) * | 2021-03-08 | 2021-06-18 | 军事科学院系统工程研究院网络信息研究所 | Position updating method for multi-beam satellite mobile communication system |
| CN113709675A (en) * | 2021-08-12 | 2021-11-26 | 北京国电高科科技有限公司 | Position management method for constellation satellite mobile communication system |
| CN113709675B (en) * | 2021-08-12 | 2024-03-19 | 北京国电高科科技有限公司 | Position management method for constellation satellite mobile communication system |
| CN113825140A (en) * | 2021-09-03 | 2021-12-21 | 天地信息网络研究院(安徽)有限公司 | User mobility management method in satellite communication |
| CN117833998A (en) * | 2024-03-04 | 2024-04-05 | 广东世炬网络科技有限公司 | Ground cell determining method, device, equipment and medium based on ground station |
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Application publication date: 20170524 Assignee: NUPT INSTITUTE OF BIG DATA RESEARCH AT YANCHENG Assignor: NANJING University OF POSTS AND TELECOMMUNICATIONS Contract record no.: X2020980007071 Denomination of invention: Dynamic k-step user position updating method for LEO satellite system Granted publication date: 20200811 License type: Common License Record date: 20201026 |