CN107172669A - The region partitioning method of up switching, hysteresis margin method to set up and device in heterogeneous network - Google Patents
The region partitioning method of up switching, hysteresis margin method to set up and device in heterogeneous network Download PDFInfo
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- CN107172669A CN107172669A CN201710424068.6A CN201710424068A CN107172669A CN 107172669 A CN107172669 A CN 107172669A CN 201710424068 A CN201710424068 A CN 201710424068A CN 107172669 A CN107172669 A CN 107172669A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
Abstract
The embodiment of the present application discloses the region partitioning method of up switching in heterogeneous network, hysteresis margin method to set up and device, including：It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary；Obtain threeth distance of the position relative to the line of the first distance of first network side apparatus, the position and first network side apparatus and the intersection point of early handoff boundary relative to the line of the second distance of the first network side apparatus, the position and first network side apparatus with the intersection point of slow handoff boundary relative to first network side apparatus；According to the first distance, the second distance and the 3rd distance, determine that user carries out the setting scope of the corresponding hysteresis margin in position during up switching from second community to first community.The scheme of the embodiment of the present application, can avoid or reduce the situation of user's switching delay occurs or frequent switching in up switching, improve the stability of user uplink switching.
Description
Technical field
The application is related to the region partitioning method of up switching in the communications field, more particularly to a kind of heterogeneous network, delayed
Surplus method to set up and device.
Background technology
The communication network of heterogeneous network a variety of base stations that have been a kind of mixed deployment, wherein may include macro base stations (Macro
Cell), medium-sized base station (Pico Cell) and small base station (Small Cell) etc..In heterogeneous network, Macro Cell are provided
Regional signal is covered, Pico/Small Cell are provided to be covered to the signal of some focuses in this area, blind spot region
Lid.
When user moves between cellular cell, communication system for ensure the user communication continuity, can by its from work as
Preceding cell is transferred in Target cell, and this transfer process is referred to as switching.It is switched in user from Pico/Small Cell
During Macro Cell, user is too early or switches over too late, can all cause user to occur radio link failure.
To avoid user from frequently entering switching flow, hysteresis margin can be set.In the heterogeneous network of prior art, use
The mode of centralized configuration sets the hysteresis margin of user.But, if hysteresis margin is excessive, easily retardance user enters and cut
Change, cause switching delay；Set too small, be easily caused user's frequent switching, redundancy is wasted.
The situation of user's switching delay occurs or frequent switching in up switching is how avoided or reduced, is the application institute
The technical problem to be solved.
The content of the invention
The purpose of the embodiment of the present application is to provide the region partitioning method of up switching, hysteresis margin in a kind of heterogeneous network
Method to set up and device, to reduce probability of failure of the user when cell switches, improve the performance of handoffs index of communication system.
In order to solve the above technical problems, what the embodiment of the present application was realized in：
A kind of first aspect, it is proposed that the hysteresis margin method to set up of up switching in heterogeneous network, including：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from second
The second community of network side equipment covering is cut to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region of early switching occurs when changing, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
With company of the intersection point relative to the second distance of the first network side apparatus, the position and first network side apparatus of early handoff boundary
Line and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
According to the first distance, the second distance and the 3rd distance, determine that user enters from second community to first community
The setting scope of the corresponding hysteresis margin in position during row up switching.
A kind of second aspect, it is proposed that the region partitioning method of up switching in heterogeneous network, the heterogeneous network includes the
The second network side equipment that one network side equipment and the first network side apparatus are administered, this method includes：
According to the position of user when occurring early switching relative to the distance of first network side apparatus, first network side apparatus and
What the respective average signal power output of the second network side equipment, first network side apparatus and the second network side equipment were each covered
The shadow fading of cell, determines that ratio is enclosed in first Apollo Nice, to determine that border is enclosed in first Apollo Nice；
According to distance of the position relative to first network side apparatus of user, first network side apparatus when occurring normally to switch
Each covered with the respective average signal power output of the second network side equipment, first network side apparatus and the second network side equipment
Cell shadow fading and hysteresis margin, determine second Apollo Nice enclose ratio, to determine the second Apollo Ni Siquan
Border；
According to occur late switching when user position relative to the distance of first network side apparatus, first network side apparatus and
What the respective average signal power output of the second network side equipment, first network side apparatus and the second network side equipment were each covered
The shadow fading of cell, determines that ratio is enclosed in the 3rd Apollo Nice, to determine that border is enclosed in the 3rd Apollo Nice；
Wherein, the region between first Apollo Nice circle border and second Apollo Nice circle border is user from second
The morning when cell that the cell of network side equipment covering is covered to first network side apparatus switches is Zone switched；
The region that second Apollo Nice is enclosed between the MPS process border of border and the second network side equipment for user from
It is normal Zone switched when the cell that the cell of second network side equipment covering is covered to first network side apparatus switches；
The MPS process border of second network side equipment and the 3rd Apollo Nice circle border between region for user from
Slow handoff boundary when the cell that the cell of second network side equipment covering is covered to first network side apparatus switches.
The third aspect, it is proposed that a kind of hysteresis margin of up switching in heterogeneous network is set, including：
Determining unit, it is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is
What the second community that user covers from the second network side equipment was covered to the first network side apparatus of the second network side equipment of administration
The inner boundary in the region of early switching occurs when first community switches, the slow handoff boundary is that user is small from second community to first
The outer boundary in the region switched late occurs when area switches；
Acquiring unit, obtains first distance, the position and first network side of the position relative to first network side apparatus
The line of equipment and the intersection point of early handoff boundary are relative to the second distance of the first network side apparatus, the position and first network
The line of side apparatus and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
Determining unit, according to the first distance, the second distance and the 3rd distance, determines user from second community to the
One cell carries out the setting scope of the corresponding hysteresis margin in position during up switching.
Fourth aspect, it is proposed that a kind of electronic equipment, including：
Processor；And
It is arranged to store the memory of computer executable instructions, the executable instruction makes the processor when executed
Perform following operate：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from second
The second community of network side equipment covering is cut to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region of early switching occurs when changing, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
With company of the intersection point relative to the second distance of the first network side apparatus, the position and first network side apparatus of early handoff boundary
Line and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
According to the first distance, the second distance and the 3rd distance, determine that user enters from second community to first community
The setting scope of the corresponding hysteresis margin in position during row up switching.
5th aspect, it is proposed that a kind of computer-readable recording medium, the computer-readable recording medium storage one or
Multiple programs, one or more programs include instruction, the instruction when be included multiple application programs electronic equipment perform when,
So that the electronic equipment performs following operate：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from second
The second community of network side equipment covering is cut to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region of early switching occurs when changing, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
With company of the intersection point relative to the second distance of the first network side apparatus, the position and first network side apparatus of early handoff boundary
Line and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
According to the first distance, the second distance and the 3rd distance, determine that user enters from second community to first community
The setting scope of the corresponding hysteresis margin in position during row up switching.
The technical scheme provided from above the embodiment of the present application, the embodiment of the present application by according to early handoff boundary with
Position between slow handoff boundary to the distance between morning handoff boundary, slow handoff boundary, first network side apparatus three, it is determined that
The setting scope of the hysteresis margin of up switching, can avoid or reduce user's switching delay occurs or frequent in up switching
The situation of switching, improves the stability of user uplink switching.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the application scenarios schematic diagram of one embodiment heterogeneous network of the application.
Fig. 2 is that one embodiment of the application justifies the up switching model of heterogeneous network built using Apollo Nice.
Fig. 3 be the application one embodiment heterogeneous network in up switching hysteresis margin method to set up flow chart.
Fig. 4 is the comparison schematic diagram of one embodiment wireless communication connection mortality of the application.
Fig. 5 is the structural representation of one embodiment electronic equipment of the application.
Fig. 6 is that one embodiment hysteresis margin of the application sets the structural representation of device.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Understand the embodiment of the present application for convenience, introduced first at this embodiment of the present application description in can introduce it is several will
Element.
Switching：When user moves between cellular cell, communication system, can be by it to ensure the continuity of user communication
In being transferred to Target cell from current area, this transfer process is referred to as switching.
Up switching：In heterogeneous network, user is switched to Macro Cell from Pico/Small Cell, this transfer
Process is referred to as up switching.
Early switching：If user is when the signal quality received from Target cell is not also fine, just triggering user to
The switching of Target cell, then now may result in user and radio link failure occur after the completion of switching.This switching is referred to as
Early switching.
Switching late：Because handoff parameter sets the reason such as unreasonable, when user away from or left serving cell covering and
From the signal quality that serving cell is received it is relatively low when, user also do not initiate switching, or initiate switching during occur
Radio link failure.This switching is referred to as switching late.
Hysteresis margin：In order to prevent user from frequently entering switching flow, in switch decision condition introduce hysteresis margin this
Individual lag parameter.Only user is when the signal intensity of the signal intensity ratio current base station of target BS is more than hysteresis margin,
Mobile subscriber is allowed to carry out handover.The technology can be prevented because user caused by signal fluctuation comes between two base stations
The scene generation for repeating switching is returned, i.e., " ping-pong ".
Fig. 1 is the application scenarios schematic diagram of one embodiment heterogeneous network of the application.As shown in figure 1, in heterogeneous network
In, when user removes from the Microcell that micro-base station is covered, the cell of access can be switched to macro base station from Microcell and covered by user
The macrocell of lid.If switching too early, it would be possible to cause user to be linked into macrocell after the handover；If cut after late
Change, user will be caused just to lose communication connection with Microcell before handover.
The embodiment of the present application proposes a kind of region partitioning method of up switching in heterogeneous network.The heterogeneous network includes
The second network side equipment that first network side apparatus and the first network side apparatus are administered.Specifically, it is existing in 3GPP, LTE etc.
In capable communication system, first network side apparatus can be macro base station, and the second network side equipment can be in macro base station administration
Type base station, micro-base station etc..It should be understood, of course, that in 5G and later communication system, macro base station, medium-sized base station, micro-base station etc. can
Other other titles can be changed to, the embodiment of the present application is not restricted to this.The region partitioning method includes：
According to the position of user when occurring early switching relative to the distance of first network side apparatus, first network side apparatus and
What the respective average signal power output of the second network side equipment, first network side apparatus and the second network side equipment were each covered
The shadow fading of cell, determines that ratio is enclosed in first Apollo Nice, to determine that border is enclosed in first Apollo Nice；
According to distance of the position relative to first network side apparatus of user, first network side apparatus when occurring normally to switch
Each covered with the respective average signal power output of the second network side equipment, first network side apparatus and the second network side equipment
Cell shadow fading and hysteresis margin, determine second Apollo Nice enclose ratio, to determine the second Apollo Ni Siquan
Border；
According to occur late switching when user position relative to the distance of first network side apparatus, first network side apparatus and
What the respective average signal power output of the second network side equipment, first network side apparatus and the second network side equipment were each covered
The shadow fading of cell, determines that ratio is enclosed in the 3rd Apollo Nice, to determine that border is enclosed in the 3rd Apollo Nice；
Wherein, the region between first Apollo Nice circle border and second Apollo Nice circle border is user from second
The morning when cell that the cell of network side equipment covering is covered to first network side apparatus switches is Zone switched；
The region that second Apollo Nice is enclosed between the MPS process border of border and the second network side equipment for user from
It is normal Zone switched when the cell that the cell of second network side equipment covering is covered to first network side apparatus switches；
The MPS process border of second network side equipment and the 3rd Apollo Nice circle border between region for user from
Slow handoff boundary when the cell that the cell of second network side equipment covering is covered to first network side apparatus switches.
Based on above-mentioned zone division methods, the up switching model of heterogeneous network can be obtained, the up switching model bag
Include：
The morning that border is enclosed in first Apollo Nice with border composition is enclosed in second Apollo Nice is Zone switched；
The normal Zone switched of the MPS process border composition of border and the second network side equipment is enclosed in second Apollo Nice；
The slow handoff boundary that border is constituted is enclosed in the MPS process border of second network side equipment with the 3rd Apollo Nice.
Fig. 2 is that one embodiment of the application justifies the up switching model of heterogeneous network built using Apollo Nice.Such as
Shown in Fig. 2, the circle R1 of innermost circle is first Apollo Nice circle border of early handoff boundary, i.e. the embodiment of the present application；From interior
The circle R2 of the second circle outward is second Apollo Nice circle border of normal Zone switched border, i.e. the embodiment of the present application；
Second network of border, i.e. the embodiment of the present application is covered for Microcell (Small Cell) from the circle R3 of interior the 3rd circle outward
The MPS process border of side apparatus；The circle R4 of outmost turns is the second Apollo Buddhist nun of slow handoff boundary, i.e. the embodiment of the present application
This circle border.λERepresent Apollo Nice circle ratio of early handoff boundary；λHRepresent the Apollo Nice on normal Zone switched border
Enclose ratio；λLRepresent Apollo Nice circle ratio on Zone switched border late.
Wherein, might as well by the zone marker in early handoff boundary be region 1., by early handoff boundary with normally it is Zone switched
Zone marker between border for region 2., mark by the region normal Zone switched border and Small Cell covered between border
It is designated as region 3., 4. Small Cell is covered into the zone marker between border and slow handoff boundary for region.
Based on above-mentioned model, switching behavior of the user in handoff scenario is analyzed as follows：
(1) when starting, during 1. user is in, there is very strong signal intensity due to close from Small Cell, Yong Huyu
Small Cell are normally connected, and are not switched.
(2) when user enter 2. when, due to Small Cell signal strength weakening to a certain extent, system is held for user
Row switching, but Macro Cell signal intensity can also provide preferable signal quality guarantee arriving by force for it, cutting now
Change and be just considered as early switching, be 2. referred to as early Zone switched.
(3) when 3. user enters, Macro Cell can provide stronger signal intensity for it, and user can normally perform
It has switched, switching now is considered as normal switching, be 3. referred to as normal Zone switched.
(4) perhaps deteriorated by wireless environment or Radio Resource such as is limited at the influenceing for factor, user is leaving Small
Radio Link connection failure phenomenon occurs before Cell overlay areas, user is reconnected.Just initiate to cut after entering 4.
Change, switching now is considered as slow switching, is 4. referred to as Zone switched late.
It should be understood, of course, that the morning of the embodiment of the present application is Zone switched, except grand including that can cause not can connect to after switching
Outside the position of cell, the region that may cause occur frequent switching may also include.Designed for the ease of the division of model, the application
Early Zone switched category is also included into this subregion by embodiment.
Based on above-mentioned up switching model, the embodiment of the present application proposes a kind of hysteresis margin of the up switching of heterogeneous network
Method to set up.
Fig. 3 be the application one embodiment heterogeneous network in up switching hysteresis margin method to set up flow chart.Fig. 3
Method by hysteresis margin set device perform.In specific application, the hysteresis margin sets device to be the second network
Equipment beyond side apparatus, or the second network side equipment, the embodiment of the present application is not restricted to this.This method includes：
S301, it is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary.
Wherein, the early handoff boundary second community that to be user cover from the second network side equipment is to administering the second network
The inner boundary in the region of early switching occurs during the first community switching of the first network side apparatus covering of side apparatus, it is described to cut late
Boundary of changing sides is the outer boundary in region for occurring to switch late when user switches from second community to first community.
S302, obtains first distance, the position and first network side of the position relative to first network side apparatus
The line of equipment and second distance of the intersection point relative to the first network side apparatus of early handoff boundary, the position and first
The line of network side equipment and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary.
S303, according to the described first distance, the second distance and the 3rd distance, determine user from second community to
First community carries out the setting scope of the corresponding hysteresis margin in position during up switching.
In the embodiment of the present application, by according to the position between early handoff boundary and slow handoff boundary to early handoff boundary,
The distance between slow handoff boundary, first network side apparatus three, determine the setting scope of the hysteresis margin of up switching, can
The situation of user's switching delay occurs or frequent switching in up switching is avoided or reduced, the stabilization of user uplink switching is improved
Property.
Alternatively, before step S302, this method may include：
According to the average signal power output of first network side apparatus, the average signal output work of the second network side equipment
The position of early switching occurs for rate, the shadow fading of first community, the shadow fading of second community and user relative to the first net
The distance of network side apparatus, determines first Apollo Nice circle ratio of the early handoff boundary；
Ratio is enclosed according to first Apollo Nice and determines the early handoff boundary.
Further, according to the average signal power output of first network side apparatus, the average letter of the second network side equipment
The position that early switching occurs for number power output, the shadow fading of first community, the shadow fading of second community and user is relative
In the distance of first network side apparatus, first Apollo Nice circle ratio of the early handoff boundary is determined, including：
Ratio is enclosed in the first Apollo Nice for determining the early handoff boundary according to equation below (1),
Wherein, PSRepresent the average signal power output of the second network side equipment, PMRepresent being averaged for first network side apparatus
Output power signal, XMRepresent the shadow fading of first community, XSThe shadow fading of second community is represented, α represents the second network side
The path loss index for the signal that equipment is sent, β represents the path loss index for the signal that first network side apparatus is sent, dM,E
Represent that distance of the position relative to first network side apparatus of early switching, λ occur for userERepresent first Apollo Nice circle ratio
Value, the first Apollo Nice circle ratio refers to occur the position of user and the distance phase of the second network side equipment during early switching
Position and the ratio of the distance of first network side apparatus for user.
Wherein,When be early handoff boundary first Apollo Nice circle ratio.
It might as well assume that user u just shifts to the Macro Cell areas of coverage from the Small Cell areas of coverage with speed v, it is to two bases
The average received signal power stood is respectively Pr,SAnd Pr,M, formula (2) and (3) can be used to represent respectively：
Wherein, PSRepresent Small Cell average signal power output, PMRepresent Macro Cell average signal output
Power, dU,SRepresent user to Small Cell distance, dU,MUser is represented to Macro Cell distance, α represents Small
Cell path loss index, β represents Macro Cell path loss index, χSRepresent Small Cell shadow fading, χM
Represent Macro Cell shadow fading.
In the embodiment of the present application, for ease of simplifying formula, the influence to noise power is ignored, now, Yong Hucong
The signal to noise ratio SINR that Macro Cell are obtainedMIt can be represented with formula (4)：
Wherein, N represents noise power.
According to 3GPP standards, early switching phenomenon can occur when being less than -6dB from the SINR that target BS is received for user, use
Family can occur to switch phenomenon late when being less than -6dB from the SINR that serving BS is received, at this point it is possible to obtain formula (5)：
Wherein, dS,ERepresent early handoff boundary to Small Cell distance, dM,ERepresent early handoff boundary to Macro
Cell distance.
Certainly, above-mentioned formula (5) corresponds to the substandard early switching conditions of 3GPP and slow switching condition.It should be understood that for
Different consensus standards, the possible difference of signal to noise ratio for occurring early switching or switching late, thus the concrete form of above-mentioned formula (5) exist
May be different under different consensus standards.
The ratio characteristic justified by Apollo Nice, can obtain early Zone switched inner boundary and late Zone switched two Ah
The ratio of POLO Nice circle：
By λEAbove-mentioned formula (1) can be drawn by bringing into above formula (5).
To λETake critical value, you can obtain early handoff boundary, i.e., early Zone switched inner boundary.
In the embodiment of the present application, by combining the derivation of formula, early switching side can be determined according to less measurement data
Boundary, improves the computational efficiency of early handoff boundary.
Alternatively, before step S302, this method may include：
According to the average signal power output of first network side apparatus, the average signal output work of the second network side equipment
The position switched late occurs for rate, the shadow fading of first community, the shadow fading of second community and user relative to the first net
The distance of network side apparatus, determines second Apollo Nice circle ratio of the slow handoff boundary；
Ratio is enclosed according to second Apollo Nice and determines the slow handoff boundary.
Further, according to the average signal power output of first network side apparatus, the average letter of the second network side equipment
The position that number power output, the shadow fading of first community, the shadow fading of second community and user occur to switch late is relative
In the distance of first network side apparatus, second Apollo Nice circle ratio of the slow handoff boundary is determined, including：
Ratio is enclosed in the second Apollo Nice for determining the slow handoff boundary according to equation below (7), wherein,
PSRepresent the average signal power output of the second network side equipment, PMRepresent the average signal of first network side apparatus
Power output, XMRepresent the shadow fading of first community, XSThe shadow fading of second community is represented, α represents the second network side equipment
The path loss index of the signal of transmission, β represents the path loss index for the signal that first network side apparatus is sent, dM,LRepresent
Distance of the position relative to first network side apparatus switched late, λ occur for userLRepresent that ratio, institute are enclosed in second Apollo Nice
State second Apollo Nice circle ratio refer to occur during switching late the position of user and the distance of the second network side equipment relative to
The position of user and the ratio of the distance of first network side apparatus.
Similarly, in the embodiment of the present application, for ease of simplifying formula, the influence to noise power is ignored, now,
The signal to noise ratio SINR that user obtains from Small CellSIt can be represented with formula (8)：
Wherein, N represents noise power.
According to 3GPP standards, user can occur to switch phenomenon late when being less than -6dB from the SINR that serving BS is received, this
When, formula (9) can be obtained：
Wherein, dS,LRepresent the Zone switched distance to Small Cell, d lateM,LRepresent Zone switched late and arrive Macro
Cell distance.
Certainly, above-mentioned formula (9) corresponds to the substandard early switching conditions of 3GPP and slow switching condition.It should be understood that for
The concrete form of different consensus standards, the possible difference of signal to noise ratio that generation switches late, thus above-mentioned formula (9) is in different associations
May be different under standard of assessing a bid for tender.
The ratio characteristic justified by Apollo Nice, can obtain the ratio of Apollo Nice circle of slow handoff boundary：
By λLAbove-mentioned formula (7) can be drawn by bringing into above formula (9).
To λLTake critical value, you can obtain slow handoff boundary, i.e. external boundary Zone switched late.
In the embodiment of the present application, by combining the derivation of formula, switching side late can be determined according to less measurement data
Boundary, improves the computational efficiency of slow handoff boundary.
It should be understood, of course, that in the embodiment of the present application, early handoff boundary and/or late switching can be also determined otherwise
Border.
Alternatively, before step S302, this method may include：
The early switching position data counted by predetermined amount of time determine the early handoff boundary；And/or
The slow switching position data counted by predetermined amount of time determine the slow handoff boundary.
, can also be according to the historical data of the early switching position counted in predetermined amount of time, it is determined that early in the embodiment of the present application
Handoff boundary, or according to the historical data of the slow switching position counted in predetermined amount of time, it is determined that handoff boundary late, so as to
Access relatively accurate early handoff boundary and/or slow handoff boundary.
Alternatively, step S303 specifically can be achieved be：
The setting scope of hysteresis margin is determined according to equation below (11)：
Wherein, H represents the corresponding hysteresis margin in the position, dM,ERepresent the second distance, dM,LThe 3rd distance is represented,
dM,HFirst distance is represented, α represents the path loss index for the signal that the second network side equipment is sent, and β represents first network side
The path loss index for the signal that equipment is sent.
It should be understood that for the ratio of normal Zone switched Apollo Nice circle, can be represented with formula (12)：
For normal switching, it switches into condition and can represented with formula (13), and unit therein is dB forms：
RSRP(M)-(RSRP(S)+H)≥0 (13)
In formula (13), RSRP (M) represents Reference Signal Received Power (References of the user u to Macro Cell
Signal Receiving Power, RSRP), RSRP (S) represents that RSRPs of the user u to Small Cell, H represent delayed remaining
Amount.
Formula (13) is represented to be meant that, as the RSRP that user u is received from Macro Cell, connect beyond from Small Cell
The RSRP of receipts is switched to Macro Cell in more than hysteresis margin H, the then cell accessed user u from Small Cell.
Formula (13) is converted into power form, addition and subtraction can be changed into multiplication and division.Now, formula (13) can be converted
For equation below (14)
According to formula (14), formula (15) can be released：
In conjunction with Fig. 2, according to Apollo Nice circle within outside, ratio characteristic incremented by successively can obtain formula (16)：
λL≤λH≤λE (16)
To λL、λECritical value is taken, while to λHCritical value is taken, formula (16) is brought into, formula (17) is can obtain：
The inequality is solved, is finally obtained in the up switching model of heterogeneous network justified based on Apollo Nice, it is to avoid
The early hysteresis margin setting scope for switching, switching late, shown in such as formula (11).
In the embodiment of the present application, based on the up switching model of heterogeneous network shown in Fig. 2, user is set to carry out up switching
Hysteresis margin, preferable effect can be obtained.
Fig. 4 is the comparison schematic diagram of one embodiment wireless communication connection mortality of the application.Wherein, " algorithm is carried "
Correspond to the hysteresis margin method to set up of the embodiment of the present application.From fig. 4, it can be seen that under different terminals speed, the application
The hysteresis margin plan of establishment traditional relative to 3 kinds of the hysteresis margin method to set up of embodiment, its wireless communication connection mortality
It is all relatively low.It can be seen that, the scheme of the embodiment of the present application can reduce user's probability of failure when cell switches, and improve communication system
Performance of handoffs index.
Fig. 5 is the structural representation of one embodiment electronic equipment 500 of the application.As shown in figure 5, electronic equipment 500
It may include processor 502, memory 503, emitter 501 and receiver 504.
Receiver 504, emitter 501, processor 502 and memory 503 are connected with each other by the system of bus 506.Bus
506 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data/address bus, control always
Line etc..For ease of representing, only represented in Fig. 5 with a four-headed arrow, it is not intended that only one bus or a type of
Bus.In specific application, emitter 501 and receiver 504 may be coupled to antenna 505.
Memory 503, for depositing program.Specifically, program can include program code, and described program code includes meter
Calculation machine operational order.Memory 503 can include read-only storage and random access memory, and refer to the offer of processor 502
Order and data.Memory 503 may include high-speed RAM memory, it is also possible to also including nonvolatile memory (non-
Volatile memory), for example, at least 1 magnetic disk storage.
Processor 502, performs the program that memory 503 is deposited.
Specifically, in the electronic equipment, processor 502 can be used for the method for performing embodiment illustrated in fig. 3, and specifically use
In execution following methods：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from second
The second community of network side equipment covering is cut to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region of early switching occurs when changing, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
With company of the intersection point relative to the second distance of the first network side apparatus, the position and first network side apparatus of early handoff boundary
Line and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
According to the first distance, the second distance and the 3rd distance, determine that user enters from second community to first community
The setting scope of the corresponding hysteresis margin in position during row up switching.
Processor 502 is probably a kind of IC chip, the disposal ability with signal.It is above-mentioned in implementation process
Each step of method can be completed by the integrated logic circuit of the hardware in processor 502 or the instruction of software form.On
The processor 502 stated can be general processor, including central processing unit (Central Processing Unit, referred to as
CPU), network processing unit (Network Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), it is special
Integrated circuit (ASIC), field programmable gate array (FPGA) or other PLDs, discrete gate or transistor
Logical device, discrete hardware components.It can realize or perform disclosed each method, step and the logic in the embodiment of the present application
Block diagram.General processor can be microprocessor or the processor can also be any conventional processor etc..With reference to this Shen
Please be disclosed in embodiment method the step of can be embodied directly in hardware decoding processor and perform completion, or handled with decoding
Hardware and software module combination in device perform completion.Software module can be located at random access memory, flash memory, read-only storage,
In the ripe storage medium in this area such as programmable read only memory or electrically erasable programmable memory, register.This is deposited
Storage media is located at memory 503, and processor 502 reads the information in memory 503, and the step of the above method is completed with reference to its hardware
Suddenly.
In the embodiment of the present application, electronic equipment according to the position between early handoff boundary and slow handoff boundary to early by cutting
Change sides the distance between boundary, slow handoff boundary, first network side apparatus three, determine the setting model of the hysteresis margin of up switching
Enclose, can avoid or reduce the situation of user's switching delay occurs or frequent switching in up switching, improve user uplink and cut
The stability changed.
In addition, electronic equipment 500 can also carry out Fig. 3 method, and realize that hysteresis margin sets device implementing shown in Fig. 3
The function of example, the embodiment of the present application will not be repeated here.
Certainly, in addition to software realization mode, the electronic equipment of the application is not precluded from other implementations, such as patrols
Collect mode of device or software and hardware combining etc., that is to say, that the executive agent of following handling process is not limited to each and patrolled
Collect unit or hardware or logical device.
The embodiment of the present application also proposed a kind of computer-readable recording medium, the computer-readable recording medium storage one
Individual or multiple programs, one or more programs include instruction, and the instruction is when the portable electronic for being included multiple application programs
When equipment is performed, the method that the portable electric appts can be made to perform embodiment illustrated in fig. 3, and specifically for performing with lower section
Method：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from second
The second community of network side equipment covering is cut to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region of early switching occurs when changing, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
With company of the intersection point relative to the second distance of the first network side apparatus, the position and first network side apparatus of early handoff boundary
Line and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
According to the first distance, the second distance and the 3rd distance, determine that user enters from second community to first community
The setting scope of the corresponding hysteresis margin in position during row up switching.
Fig. 6 is that one embodiment hysteresis margin of the application sets the structural representation of device 600.Fig. 6 is refer to, one
Plant in Software Implementation, hysteresis margin sets device 600 may include：Determining unit 610, acquiring unit 620, wherein
Determining unit 610, it is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary
It is that the second community that user covers from the second network side equipment is covered to the first network side apparatus of the second network side equipment of administration
First community switching when occur the inner boundary in the region of early switching, the slow handoff boundary is user from second community to first
The outer boundary in the region switched late occurs when cell switches；
Acquiring unit 620, obtains first distance, the position and first network of the position relative to first network side apparatus
The line of side apparatus and the intersection point of early handoff boundary are relative to the second distance of the first network side apparatus, the position and the first net
The line of network side apparatus and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
Determining unit 620, always according to the first distance, the second distance and the 3rd distance, determines that user is small from second
Area to first community carry out up switching when the position corresponding hysteresis margin setting scope.
Hysteresis margin sets device 600 to can also carry out Fig. 3 method, and realizes that hysteresis margin sets device shown in Fig. 3
The function of embodiment, the embodiment of the present application will not be repeated here.
In a word, the preferred embodiment of the application is the foregoing is only, the protection domain of the application is not intended to limit.
All any modification, equivalent substitution and improvements within spirit herein and principle, made etc., should be included in the application's
Within protection domain.
System, device, module or unit that above-described embodiment is illustrated, can specifically be realized by computer chip or entity,
Or realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used
Think personal computer, laptop computer, cell phone, camera phone, smart phone, personal digital assistant, media play
It is any in device, navigation equipment, electronic mail equipment, game console, tablet PC, wearable device or these equipment
The combination of equipment.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moved
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein
Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising so that process, method, commodity or equipment including a series of key elements are not only including those key elements, but also wrap
Include other key elements being not expressly set out, or also include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there is other identical element in process, method, commodity or the equipment of element.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Claims (11)
1. a kind of hysteresis margin method to set up of up switching in heterogeneous network, it is characterised in that including：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from the second net
The second community of network side apparatus covering switches to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region that Shi Fasheng early switches, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
Intersection point with early handoff boundary is relative to the second distance of the first network side apparatus, the position and first network side apparatus
Line and slow handoff boundary threeth distance of the intersection point relative to first network side apparatus；
According to the described first distance, the second distance and the 3rd distance, determine user from second community to first community
Carry out the setting scope of the corresponding hysteresis margin in position during up switching.
2. the method as described in claim 1, it is characterised in that
According to the described first distance, the second distance and the 3rd distance, determine user from second community to first community
The setting scope of the corresponding hysteresis margin in position during up switching is carried out, including：
The setting scope of the corresponding hysteresis margin in the position is determined according to equation below：
<mrow>
<mfrac>
<mn>1</mn>
<mn>4</mn>
</mfrac>
<mo>&CenterDot;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<msub>
<mi>d</mi>
<mrow>
<mi>M</mi>
<mo>,</mo>
<mi>H</mi>
</mrow>
</msub>
<msub>
<mi>d</mi>
<mrow>
<mi>M</mi>
<mo>,</mo>
<mi>E</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mrow>
<mi>&alpha;</mi>
<mo>-</mo>
<mi>&beta;</mi>
</mrow>
</msup>
<mo>&le;</mo>
<mi>H</mi>
<mo>&le;</mo>
<mn>4</mn>
<mo>&CenterDot;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<msub>
<mi>d</mi>
<mrow>
<mi>M</mi>
<mo>,</mo>
<mi>H</mi>
</mrow>
</msub>
<msub>
<mi>d</mi>
<mrow>
<mi>M</mi>
<mo>,</mo>
<mi>L</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mrow>
<mi>&alpha;</mi>
<mo>-</mo>
<mi>&beta;</mi>
</mrow>
</msup>
<mo>;</mo>
</mrow>
Wherein, H represents the corresponding hysteresis margin in the position, dM,ERepresent the second distance, dM,LThe 3rd distance is represented,
dM,HFirst distance is represented, α represents the path loss index for the signal that the second network side equipment is sent, and β represents first network
The path loss index for the signal that side apparatus is sent.
3. the method as described in claim 1, it is characterised in that methods described also includes：
According to the average signal power output of first network side apparatus, the average signal power output of the second network side equipment,
The position of early switching occurs for the shadow fading of one cell, the shadow fading of second community and user relative to first network side
The distance of equipment, determines first Apollo Nice circle ratio of the early handoff boundary；
Ratio is enclosed according to first Apollo Nice and determines the early handoff boundary.
4. method as claimed in claim 3, it is characterised in that
According to the average signal power output of first network side apparatus, the average signal power output of the second network side equipment,
The position of early switching occurs for the shadow fading of one cell, the shadow fading of second community and user relative to first network side
The distance of equipment, determines first Apollo Nice circle ratio of the early handoff boundary, including：
Ratio is enclosed in the first Apollo Nice for determining the early handoff boundary according to equation below：
<mrow>
<msub>
<mi>&lambda;</mi>
<mi>E</mi>
</msub>
<mo>&GreaterEqual;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<mn>4</mn>
<msub>
<mi>P</mi>
<mi>M</mi>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>X</mi>
<mi>M</mi>
</msub>
<mo>&CenterDot;</mo>
<msubsup>
<mi>d</mi>
<mrow>
<mi>M</mi>
<mo>,</mo>
<mi>E</mi>
</mrow>
<mrow>
<mi>&alpha;</mi>
<mo>-</mo>
<mi>&beta;</mi>
</mrow>
</msubsup>
</mrow>
<mrow>
<msub>
<mi>P</mi>
<mi>S</mi>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>X</mi>
<mi>S</mi>
</msub>
</mrow>
</mfrac>
<mo>)</mo>
</mrow>
<mfrac>
<mn>1</mn>
<mi>&alpha;</mi>
</mfrac>
</msup>
</mrow>
Wherein, PSRepresent the average signal power output of the second network side equipment, PMRepresent the average signal of first network side apparatus
Power output, XMRepresent the shadow fading of first community, XSThe shadow fading of second community is represented, α represents the second network side equipment
The path loss index of the signal of transmission, β represents the path loss index for the signal that first network side apparatus is sent, dM,ERepresent
Distance of the position relative to first network side apparatus of early switching, λ occur for userERepresent that ratio, institute are enclosed in first Apollo Nice
State first Apollo Nice circle ratio refer to occur during early switching the position of user and the distance of the second network side equipment relative to
The position of user and the ratio of the distance of first network side apparatus.
5. method as claimed in claim 1 or 2, it is characterised in that methods described also includes：
According to the average signal power output of first network side apparatus, the average signal power output of the second network side equipment,
The position switched late occurs for the shadow fading of one cell, the shadow fading of second community and user relative to first network side
The distance of equipment, determines second Apollo Nice circle ratio of the slow handoff boundary；
Ratio is enclosed according to second Apollo Nice and determines the slow handoff boundary.
6. method as claimed in claim 5, it is characterised in that
According to the average signal power output of first network side apparatus, the average signal power output of the second network side equipment,
The position switched late occurs for the shadow fading of one cell, the shadow fading of second community and user relative to first network side
The distance of equipment, determines second Apollo Nice circle ratio of the slow handoff boundary, including：
Ratio is enclosed in the second Apollo Nice for determining the slow handoff boundary according to equation below, wherein,
<mrow>
<msub>
<mi>&lambda;</mi>
<mi>L</mi>
</msub>
<mo>&le;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>P</mi>
<mi>M</mi>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>X</mi>
<mi>M</mi>
</msub>
<mo>&CenterDot;</mo>
<msubsup>
<mi>d</mi>
<mrow>
<mi>M</mi>
<mo>,</mo>
<mi>L</mi>
</mrow>
<mrow>
<mi>&alpha;</mi>
<mo>-</mo>
<mi>&beta;</mi>
</mrow>
</msubsup>
</mrow>
<mrow>
<mn>4</mn>
<msub>
<mi>P</mi>
<mi>S</mi>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>X</mi>
<mi>S</mi>
</msub>
</mrow>
</mfrac>
<mo>)</mo>
</mrow>
<mfrac>
<mn>1</mn>
<mi>&alpha;</mi>
</mfrac>
</msup>
</mrow>
PSRepresent the average signal power output of the second network side equipment, PMRepresent the average signal output of first network side apparatus
Power, XMRepresent the shadow fading of first community, XSThe shadow fading of second community is represented, α represents that the second network side equipment is sent
Signal path loss index, β represent first network side apparatus send signal path loss index, dM,LRepresent user
Occur distance of the position relative to first network side apparatus switched late, λLRepresent that ratio, described the are enclosed in second Apollo Nice
The position of user and the distance of the second network side equipment are relative to user when two Apollo Nice circle ratio refers to occur to switch late
Position and first network side apparatus distance ratio.
7. the method as any one of claim 1-6, it is characterised in that obtaining the position relative to first network
The intersection point of first distance of side apparatus, the line of the position and first network side apparatus and morning handoff boundary is relative to described the
The intersection point of the line of the second distance of one network side equipment, the position and first network side apparatus and slow handoff boundary relative to
Before 3rd distance of first network side apparatus, methods described also includes：
The early switching position data counted by predetermined amount of time determine the early handoff boundary；And/or
The slow switching position data counted by predetermined amount of time determine the slow handoff boundary.
8. the region partitioning method of up switching in a kind of heterogeneous network, it is characterised in that the heterogeneous network includes the first net
The second network side equipment that network side apparatus and the first network side apparatus are administered, methods described includes：
According to distance of the position relative to first network side apparatus of user, first network side apparatus and second when occurring early to switch
The cell that the respective average signal power output of network side equipment, first network side apparatus and the second network side equipment are each covered
Shadow fading, determine first Apollo Nice enclose ratio, with determine first Apollo Nice enclose border；
According to the position of user when occurring normal switching relative to the distance of first network side apparatus, first network side apparatus and the
It is small that the respective average signal power output of two network side equipments, first network side apparatus and the second network side equipment are each covered
The shadow fading and hysteresis margin in area, determine that ratio is enclosed in second Apollo Nice, to determine that side is enclosed in second Apollo Nice
Boundary；
According to distance of the position relative to first network side apparatus of user, first network side apparatus and second when occurring to switch late
The cell that the respective average signal power output of network side equipment, first network side apparatus and the second network side equipment are each covered
Shadow fading, determine the 3rd Apollo Nice enclose ratio, with determine the 3rd Apollo Nice enclose border；
Wherein, the region between first Apollo Nice circle border and second Apollo Nice circle border is user from the second network
The morning when cell that the cell of side apparatus covering is covered to first network side apparatus switches is Zone switched；
The region that second Apollo Nice is enclosed between the MPS process border of border and the second network side equipment is user from second
It is normal Zone switched when the cell that the cell of network side equipment covering is covered to first network side apparatus switches；
Region between the MPS process border of second network side equipment and the 3rd Apollo Nice circle border is user from second
Slow handoff boundary when the cell that the cell of network side equipment covering is covered to first network side apparatus switches.
9. a kind of hysteresis margin of up switching in heterogeneous network sets device, it is characterised in that including：
Determining unit, it is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is to use
The covering of first network side apparatus from the second community that family is covered from the second network side equipment to the second network side equipment of administration the
The inner boundary in the region of early switching occurs when one cell switches, the slow handoff boundary is that user is small from second community to first
The outer boundary in the region switched late occurs when area switches；
Acquiring unit, obtains first distance, the position and first network side of the position relative to first network side apparatus
The line of equipment and second distance of the intersection point relative to the first network side apparatus of early handoff boundary, the position and first
The line of network side equipment and threeth distance of the intersection point relative to first network side apparatus of slow handoff boundary；
The determining unit, according to the described first distance, the second distance and the 3rd distance, determines that user is small from second
Area to first community carry out up switching when the position corresponding hysteresis margin setting scope.
10. a kind of electronic equipment, it is characterised in that including：
Processor；And
It is arranged to store the memory of computer executable instructions, the executable instruction makes the processor when executed
Perform following operate：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from the second net
The second community of network side apparatus covering switches to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region that Shi Fasheng early switches, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
Intersection point with early handoff boundary is relative to the second distance of the first network side apparatus, the position and first network side apparatus
Line and slow handoff boundary threeth distance of the intersection point relative to first network side apparatus；
According to the described first distance, the second distance and the 3rd distance, determine user from second community to first community
Carry out the setting scope of the corresponding hysteresis margin in position during up switching.
11. a kind of computer-readable recording medium, it is characterised in that the computer-readable recording medium storage is one or more
Program, one or more of programs include instruction, described to instruct when the electronic equipment for being included multiple application programs is performed,
So that the electronic equipment performs following operate：
It is determined that the position in the region that early handoff boundary is constituted with slow handoff boundary, the early handoff boundary is user from the second net
The second community of network side apparatus covering switches to the first community of the first network side apparatus covering of the second network side equipment of administration
The inner boundary in the region that Shi Fasheng early switches, the slow handoff boundary is that user sends out when switching from second community to first community
The outer boundary in the raw region switched late；
Obtain line of the position relative to the first distance of first network side apparatus, the position and first network side apparatus
Intersection point with early handoff boundary is relative to the second distance of the first network side apparatus, the position and first network side apparatus
Line and slow handoff boundary threeth distance of the intersection point relative to first network side apparatus；
According to the described first distance, the second distance and the 3rd distance, determine user from second community to first community
Carry out the setting scope of the corresponding hysteresis margin in position during up switching.
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| CN107172669B (en) | 2020-05-05 |
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