CN1882160A - PHS base station switching method and its device - Google Patents
PHS base station switching method and its device Download PDFInfo
- Publication number
- CN1882160A CN1882160A CNA2005100119350A CN200510011935A CN1882160A CN 1882160 A CN1882160 A CN 1882160A CN A2005100119350 A CNA2005100119350 A CN A2005100119350A CN 200510011935 A CN200510011935 A CN 200510011935A CN 1882160 A CN1882160 A CN 1882160A
- Authority
- CN
- China
- Prior art keywords
- switching
- channel
- base station
- switch
- received signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a PHS base station switch method and a relative device, wherein it comprises: A, checking the error frame code of PHS system and receiving the information of signal field strength; B, based on the checked information and the different switch reasons, the first confirmed base station initializes the switch priority judge to judge the switch type of PHS system and initializes the relative switch request. Said device comprise: a FER detector and a RSSI detector for detecting the information; a base station switch initialize controller for judging the switch type and initializing the switch request based on the switch priority; and a base station switch controller for responding the switch request and controlling the switch. The invention can improve the switch property of system.
Description
Technical field
The present invention relates to a kind of PHS (Personal Handyphone System personal hand held phone system) base station switch method and device thereof, particularly a kind ofly can carry out respective handling, thereby promote the base station switch method and the device thereof of performance of handoffs a variety of causes that switch to occur.
Background technology
The domestic Personal Handyphone System(PHS) that claims again of PHS system can provide cheap mobile service, has obtained at home to develop rapidly.On the one hand, the PHS base station is operated in 1900 megahertz frequency ranges, and this frequency range radio transmission has the characteristics of the bigger penetrability difference of signal fluctuation, causes switching easily.The PHS base station power is little on the other hand, and coverage is little, walks out base station range during the user moves easily, causes to switch.It is more that this two aspects reason has caused the PHS system to be switched, and can only improve speech quality by performance of handoffs.
The PHS system is switched has TCH (Traffic Channel, Traffic Channel) switching, recall type to switch two kinds.The recall type switches needs base station indication mobile phone to carry out the switching of recall type, mobile phone switches to control channel from conversation TCH channel, again make a call, after new TCH channel is set up speech channel, discharge former conversation TCH channel by the network informing base station, be about switching time 1 second, switching can be carried out between different base station.When TCH switched, the base station issues at conversation TCH channel switched indication, and the instruction mobile phone switches to target TCH channel, discharges old TCH channel, converses at new TCH channel, and switching can only be carried out in same base station, and switching time is very short about 300 milliseconds.
The PHS system switches by the characteristic that detects frame error rate FER (Frame Error Rate) and received signal field intensity RSSI (Received Signal Strength Indication) and is undertaken, wherein FER is the direct factor of influence conversation, handoff algorithms also is mainly to consider the judgement of FER characteristic at present, judge whether and to switch according to the FER characteristic, according to RSSI decision switching type.
Existing algorithm not have specially at the processing of classifying of the switch reasons of PHS system appearance, cause problems such as length switching time, switching call drop easily, reason is as follows: 1) the PHS system works is at 1900 megahertzes, the signal penetrability is poor, signal fluctuation is bigger, and meeting priming signal fluctuation aggravation under some situation (as, building blocks in the moving process, fast moving etc.), cause receptivity to worsen fast.According to the PHS air interface protocol, the FER detection was a unit with 1.2 seconds, and detection time is long, can not switch fast, causes switching time long, and speech quality descends, even call drop occurs.2) do not distinguish lasting little error code and two kinds of situations of the big error code of burst, detect at different situations FER and do different disposal, accelerate switch speed.3) mobile phone initiates comprehensively not judge the base station uplink information when TCH switches, and judgement information is not comprehensive; TCH is not switched frequency control.May cause in the short time, mobile phone carries out TCH continuously and switches under a base station, but the air time is very short, and speech quality is low.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of PHS base station switch method and device thereof, and it has carried out respective handling by the different reasons that switching is occurred, thereby has promoted the performance of handoffs of system.
To achieve these goals, the invention provides a kind of PHS base station switch method, wherein, comprising:
Steps A detects the frame error rate of PHS system and the information of received signal field intensity; And
Step B according to the detected information of steps A, judges the switching type that the PHS system will initiate according to initiating switching judging priority by the predetermined base station of different switch reasons, and initiates corresponding handoff request.
Described method, wherein, the base station is initiated the priority of switching judging and is determined by the influence degree that different switch reasons switches the PHS system.
Described method wherein, when in the described different switching type wherein one type is satisfied in described base station, and when initiating corresponding handoff request, is not carried out the judgement of other switching types, in order to avoid restart switching judging to described base station.
Described method, wherein, step B further comprises:
Step B1 according to the information of received signal field intensity, judges whether to satisfy the switching condition that the received signal field intensity triggers; In this way, then initiating the recall type switches; As not, then continue step B2;
Step B2 according to frame error rate information, judges whether to satisfy the switching condition that frame error rate triggers.
Described method, wherein, step B2 further comprises:
Step B21 according to frame error rate information, judges whether to satisfy lasting little error code switching condition; In this way, then initiating to continue little error code switches; As not, then continue step B22; And,
Step B22 according to frame error rate information, judges whether to satisfy the big error code switching condition of burst; In this way, then initiating big error code switches; As not, then keep, do not switch.
Described method, wherein, step B21 and/or step B22 comprise that further one judges that according to the received signal field intensity switch to that channel switches still is the step that the recall type switches; When the received signal field intensity is higher than the setting thresholding, triggers channel and switch; When the received signal field intensity is lower than the setting thresholding, triggers the recall type and switch.
Described method, wherein, steps A detects the change information of frame error rate and received signal field intensity by sliding window.
Described method, wherein, sliding window detects and further comprises the detection of conventional variation sliding window and change the sliding window detection fast; Change sliding window fast and be used for when signal changes fast, field intensity detects to received signal, and the size of its detection window and detection step-length are determined by field testing according to the requirement of switch speed.
Described method wherein, utilizes the received signal field intensity information that changes the sliding window detection fast to judge whether the PHS system satisfies the switching condition that the received signal field intensity triggers; The channel that switches to that the received signal field intensity information of utilizing routine to change the sliding window detection is judged switches still recall type switching.
Described method wherein, comprises that further a uplink channel information of being obtained according to the received signal field intensity that detects judges whether up channel allows to initiate the step that channel switches.
Described method wherein, further comprises and utilizes the timer control channel switching time of step at interval, thus the frequency that switches with control channel.
Described method wherein, further comprises the step of mobile phone and base station switching Comprehensive Control, specifically comprises:
Step 4 discharges old channel, converses at new channel, and channel switching controls timer further is set;
Step 5 judges whether channel switching controls timer is overtime; In this way, carrying out channel switches; As not, then do not carry out channel and switch.
The present invention also provides a kind of PHS base station switching device shifter, wherein, comprising:
The frame error rate detector is used to detect the frame error rate information of PHS system;
Received signal field intensity detector is used to detect the field intensity information of PHS system received signal;
The initiation controller is switched in the base station, be used for the information that reports according to frame error rate detector and received signal field intensity detector, according to initiating switching judging priority the switching type that the PHS system will initiate is judged, and initiated corresponding handoff request by the predetermined base station of different switch reasons; And
The base station switch controller is used to receive handoff request and carries out switching controls.
Described device, wherein, the base station is initiated the priority of switching judging and is determined by the influence degree that different switch reasons switches the PHS system.
Described device, wherein, the base station is switched the initiation controller and is further comprised:
The received signal field intensity triggers the switching judging module, is used for the device according to the received signal field intensity, judges whether to satisfy the switching condition that the received signal field intensity triggers;
Frame error rate triggers the switching judging module, is used for according to frame error rate information, judges whether to satisfy the switching condition that frame error rate triggers;
Wherein, received signal field intensity triggering switching judging module is higher than frame error rate triggering switching judging module priority.
Described device, wherein, frame error rate triggers the switching judging module and further comprises:
Continue little error code switching judging module, be used for, judge whether to satisfy lasting little error code switching condition according to frame error rate information; And,
Big error code switching judging module is used for according to frame error rate information, judges whether to satisfy the big error code switching condition of burst;
Wherein, error code switching judging module priority is higher greatly to continue little error code switching judging module.
Described device, wherein, lasting little error code switching judging module and/or big error code switching judging module further comprise concrete switching type judge module, are used for judging that according to the field intensity of received signal switching to channel switches still recall type switching; Wherein, when the received signal field intensity is higher than the setting thresholding, be that channel switches; When the received signal field intensity is lower than the setting thresholding, be that the recall type switches.
Described device, wherein, FER detector and/or RSSI detector further comprise the sliding window checkout gear.
Described device, wherein, sliding window detects and further comprises the detection of conventional variation sliding window and change the sliding window detection fast; Change sliding window fast and be used for when signal changes fast, field intensity detects to received signal, and the size of its detection window and detection step-length are determined by field testing according to the requirement of switch speed.
Described device, wherein, the base station switch controller further comprises a uplink channel information acquisition module, draws by the received signal field intensity, is used to judge whether up channel allows to initiate channel and switch.
Described device, wherein, the base station switch controller further comprises a channel switching controls timer, is used for control channel interval switching time, thus the frequency that control channel switches.
Described device, wherein, the base station switch controller further comprises:
One switches the Comprehensive Control module, be used to receive the handoff request that send mobile phone and/or base station, and the switching of corresponding mobile phone and/or base station is carried out in control;
Wherein, switching the Comprehensive Control module further comprises:
One mobile phone switching controls module has judged whether idle channel, then switches to new channel if having;
One base station switching controls module is used for carrying out judging whether the received signal field intensity satisfies switching condition when switch the base station; In this way, then switch to new channel;
One channel switches the frequency control module, is used to judge whether channel switching controls timer is overtime, then carries out channel in this way and switches.
The present invention improves for the FER testing mechanism by taking all factors into consideration different switch reasons, introduces the RSSI fast detection mechanism, accelerates handoff response speed.At different switch reasons influence degrees, determine the priority of base station initiation switching judging, prevent to switch call drop, improve the performance of handoffs of PHS system.Comprehensive judgement up-downgoing information, to mobile phone and base station switching carrying out unified management, control TCH switches frequency, prevents continuous T CH switching in the short time, does not also have similar Processing Algorithm openly at present.In existing P HS system base-station, only software upgrading just can need be realized the method that the present invention proposes, for the lifting of the performance of handoffs of present PHS grid very active operation significance is arranged.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is FER of the present invention and the conventional change-detection sliding window of RSSI schematic diagram;
Fig. 2 is the quick change-detection sliding window of a RSSI of the present invention schematic diagram;
Fig. 3 is that base station of the present invention switching device shifter is formed schematic diagram;
Fig. 4 is that the handoff algorithms schematic diagram is initiated in base station of the present invention;
Fig. 5 is that the module diagram of initiating controller is switched in base station of the present invention;
Fig. 6 is the module diagram of base station of the present invention switch controller.
Embodiment
The realization of method of the present invention and device thereof comprises following various aspects:
(1) FER and RSSI change the sliding window detection;
(2) the initiation algorithm is switched in the base station;
(3) control algolithm is called out in the base station.
Below the present invention is described in further detail:
(1) FER and RSSI change the sliding window detection
Because there is certain fluctuation in signal, reach the validity height well for guaranteeing the promptness that upward signal detects, adopt the sliding window mode to detect RSSI and FER variation.It is a continuous process (as shown in Figure 1 and Figure 2) that sliding window slides.Window continue to slide, can the picked up signal change procedure by judging, and according to change procedure the signal Changing Pattern is judged, better provide foundation for switching judging.Wherein, Fig. 1 is FER of the present invention and the conventional change-detection sliding window of RSSI schematic diagram.Fig. 2 is the quick change-detection sliding window of a RSSI of the present invention schematic diagram.
Influence voice quality FER time decision and be generally 1.2 seconds, for integrated treatment FER and RSSI information, we are decided to be 1.2 seconds (as shown in Figure 1) with the conventional sliding window size of RSSI and FER, adopt 100 milliseconds sliding step, and adjacent two windows have 1.1 seconds overlapping.
Fig. 3 is that base station of the present invention switching device shifter is formed schematic diagram.As shown in Figure 3, base station of the present invention switching device shifter comprises: FER (frame error rate) detector 1, RSSI (received signal field intensity) detector 2, base station switch controller 3, base station are switched and are initiated controller 4.Wherein, RSSI monitor 2 reads original RSSI value, utilizes sliding window (as shown in Figure 1, 2) that RSSI is handled, and reports to handle the RSSI value to base station switching initiation controller 4.FER detector 1 utilizes sliding window to calculate the FER value, reports the base station and switches initiation controller 4.Initiation 4 pairs of FER detectors 1 of controller are switched in the base station and RSSI detector 2 reports FER value and RSSI value to handle, switch the initiation algorithm according to base station shown in Figure 4 and carry out RSSI switching, lasting little error code, the big Error detection judgment processing of burst, realize that base station switching initiation is tactful.Switch controller carries out integrated treatment according to base station switching controls algorithm to base station and mobile phone handover information, and switching type is controlled, and switches frequency for TCH and manages, and realizes the base station handover management.
RSSI value of the detector of RSSI shown in Fig. 32 per 100 milliseconds of records, the every slip of sliding window is once calculated the mean value of 12 RSSI of the corresponding 1.2 seconds window correspondences of this time slip, and reports base station switching initiation controller 4.
When shown in Figure 1 1.2 seconds windows slided, FER detector 1 shown in Figure 3 calculated mistake frame number in 1.2 seconds window time periods, and mistake frame number and 240 (having 240 frames in 1.2 seconds according to agreement) is compared the acquisition frame error rate, reports frame error rate to switch initiation controller 4 to the base station.
When signal changes fast, need carry out hand-off process according to RSSI, and signal changes fast and adopts 1.2 seconds windows detecting time long, introduce for this reason and start the promptly quick windows detecting mechanism that changes of wicket testing mechanism, the window size of quick variation sliding window as shown in Figure 2 is the S1 millisecond, and it is the S2 millisecond that sliding window RSSI detects step-length.RSSI value of every S2 millisecond RSSI detector 2 records, every slip is once calculated S1/S2 RSSI mean value in this time sliding window, reports mean value to switch to the base station and initiates controller 4.Wherein S1 and S2 determine by field testing according to the switch speed requirement, and S2 requires and can be divided exactly by S1.
(2) handoff algorithms is initiated in the base station
In order to shorten switching time, improve voice quality, improve FER and the RSSI change-detection performance except introducing sliding window mechanism, we have also introduced new base station TCH channel switches the initiation algorithm, as shown in Figure 4.In order to accelerate to switch launch speed, according to switch reasons and influence thereof, handoff algorithms carries out switching judging according to the priority orders that RSSI switches, lasting little error code switches, the big error code of burst switches to be handled.
RSSI switches preferentially judge it is to decay fast for anti-stop signal, switches when signal is very poor and causes long, switching call drop of the time of changing.This type of handoff factor influence is big, and it is fast that the switch speed corresponding speed is wanted, and requires preferentially to judge.
FER switches by sliding window judgement FER and switches, and determines switching type by signal strength signal intensity: (RSSI mean value was higher than a certain thresholding in current 1.2 seconds) TCH switched (channel switching) when strong signal disturbed, weak signal disturbs (RSSI mean value was lower than a certain thresholding in current 1.2 seconds) triggering HO to switch (switching of recall type).As shown in Figure 4, the switching that FER triggers is divided into and continues two kinds of little error code and the big error codes of burst, and the FER threshold value that difference is to start judgement is different with the slip duration, and little error code generally occurs earlier with the signal deterioration rate, for accelerating to switch reaction speed, continue little error code switching judging priority treatment.
New handoff algorithms has been introduced following switching reference variable: RSSI switch level thresholding W, TCH switch level thresholding X, the big error code frame error rate thresholding Y of burst, lasting little error code frame error rate thresholding Z.The threshold setting value is relevant with base station performance, can determine that to voice quality impacts therefore the big error rate height that wherein happens suddenly requires Y greater than Z by field testing switch speed, switching.
Switch to initiate after controller 4 receives the RSSI and FER that FER and RSSI detector report the base station, and record FER and RSSI be to buffer memory, according to flow process as shown in Figure 4, carries out the switching judging processing:
Step 401, the beginning switching flow;
Step 402 judges whether the wicket RSSI mean value of buffer memory satisfies the RSSI switching condition;
Step 403, as satisfy the RSSI switching condition promptly satisfies a continuous N RSSI record as the wicket RSSI mean value of buffer memory and is lower than W, then initiates the recall type and switches, and send a handover request to switch controller; At this moment, it is invalid that wicket RSSI switching record value, lasting little error code and the big error code FER value that happens suddenly all are set to, and when initialization prevents to satisfy other condition, sends handoff request continuously, restarts switching judging, influences the upper strata and handle.
Step 404 as not satisfying the RSSI switching condition, then further judges whether to satisfy the condition that little error code switches that continues;
Step 405, as satisfying the condition that little error code switches that continues, if promptly K1 second, interior L1 FER continuously was greater than Z, then initiating to continue little error code switches, and judge that further whether nearest 1.2 seconds window RSSI mean value is higher than thresholding X, in this way, then changes step 406 over to, as not, promptly be lower than X and then change step 407 over to as nearest 1.2 seconds window RSSI mean value; Continue the condition that little error code switches as not satisfying, then change step 408 over to;
Step 406 is initiated TCH and is switched;
Step 407 is then initiated the recall type and is switched;
When satisfying the condition that continues little error code switching, corresponding handoff request is sent to switch controller; At this moment, it is invalid that wicket RSSI switching record value, lasting little error code and the big error code FER value that happens suddenly all are set to, and prevents to satisfy other condition, sends handoff request continuously, restarts switching judging.
Step 408 judges whether to satisfy the condition that the big error code of burst switches; In this way, if promptly K2 second, interior L2 FER continuously changed step 410 over to greater than Y; As not, change step 409 over to;
Step 409 keeps, and does not switch;
Step 410 judges further whether nearest 1.2 seconds window RSSI are higher than X; If then change step 412 over to; As not, promptly be lower than X as nearest 1.2 seconds window RSSI, then change step 411 over to;
Step 411 is initiated TCH and is switched;
Step 412 is initiated the recall type and is switched;
After satisfying the big error code switching condition of burst, send a handover request to switch controller, at this moment, it is invalid that wicket RSSI switching record value, lasting little error code and the big error code FER value that happens suddenly all are set to, prevent to satisfy other condition, send handoff request continuously, restart switching judging.
Wherein, M, K1, K2, L1, L2 are relevant with base station performance, can determine according to the test of outfield, base station performance of handoffs.Because the big Error detection time that happens suddenly is short, requires K2 less than K1, L2 is less than L1.
Fig. 5 is that the module diagram of initiating controller 4 is switched in base station of the present invention.As shown in Figure 5, base station of the present invention is switched initiation controller 4 and is triggered switching judging module 41, FER triggering switching judging module 42 by the RSSI that sets within it, and FER triggers lasting little error code switching judging module 421, big error code judge module 422 that switching judging module 42 inside are provided with again, and interior setting be used to judge that it still is the concrete switching type judge module 4211,4221 that the recall type switches that channel switches, come the above-mentioned base station of specific implementation to switch and initiate algorithm.
(3) base station switching controls algorithm
Mobile phone carries out hand-off process according to the downstream signal situation, quality of uplink signal not necessarily was fit to do the TCH switching when mobile phone was initiated the TCH switching, just can make best judgement by switch controller 3 integrated treatments shown in Figure 3, processing method is as follows: switch controller 3 is by obtaining the RSSI mean value of current 1.2S window to RSSI detector 2, obtain uplink channel information, initiate TCH with the base station and switch RSSI thresholding X relatively, judge whether up channel allows to initiate TCH and switch.
When continuous T CH switches the normal talking time very short, speech quality descends, switch controller 3 is introduced channel and is switched (TCH switchings) control timer 31 for guaranteeing speech quality, control TCH switches frequency, prevents continuous T CH switching.It is D second that TCH switching controls timer 31 is provided with overtime duration, after TCH switches, forbid that before timer expiry new TCH switches, just passable after overtime, so just TCH has been controlled at D more than second switching time at interval, the occurrence of D can obtain according to the base station performance test.
Integrated management is switched in 3 pairs of mobile phones of switch controller and base station, and its processing procedure is as follows:
A) switch controller 3 reception base stations and mobile phone handoff request are handled: receive mobile phone TCH handoff request to carrying out B later on); Receiving the base station switch to initiate the TCH handoff request of controller and carries out C), receive mobile phone or base station recall type handoff request is carried out D);
C) switch controller 3 obtains current 1.2 seconds window RSSI mean value to RSSI detector 2, switches indication if RSSI greater than X, distributes new channel to send TCH, and the instruction mobile phone switches to new channel, carries out E), otherwise carry out D);
D) switch controller 3 issues recall type switching indication.
E) discharge old TCH, converse, TCH switching controls timer 31 is set, carry out F) at new TCH;
F) TCH switching controls timer 31 is overtime, carries out A); Before TCH switching controls timer 31 was overtime, switch controller 3 received that base station or mobile phone initiate TCH handoff request, recall type handoff request, all carries out D).
Fig. 6 is the module diagram of base station of the present invention switch controller 3.As shown in Figure 6, channel switching controls timer 31, uplink channel information acquisition module 32, the switching Comprehensive Control module 33 of base station of the present invention switch controller 3 by being provided with in it, wherein switch Comprehensive Control module 33 and comprise that further mobile phone switching controls module 331, base station switching controls module 332 and channel switch frequency control module 333, realize its comprehensive judgement up-downgoing information, to mobile phone and base station switching carrying out unified management, control TCH switches frequency, prevents the function that continuous T CH switches in the short time.
The invention discloses high hand-off process algorithm and the device of efficient in a kind of PHS system, can improve the network performance of handoffs, prevent to switch call drop, the construction and development of PHS network are had very positive meaning.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (22)
1, a kind of PHS base station switch method is characterized in that, comprising:
Steps A detects the frame error rate of PHS system and the information of received signal field intensity; And
Step B according to the detected information of steps A, judges the switching type that the PHS system will initiate according to initiating switching judging priority by the predetermined base station of different switch reasons, and initiates corresponding handoff request.
2, method according to claim 1 is characterized in that, the base station is initiated the priority of switching judging and determined by the influence degree that different switch reasons switches the PHS system.
3, method according to claim 1, it is characterized in that, when in the described different switching type wherein one type is satisfied in described base station, and when initiating corresponding handoff request, described base station is not carried out the judgement of other switching types, in order to avoid restart switching judging.
4, according to claim 1,2 or 3 described methods, it is characterized in that step B further comprises:
Step B1 according to the information of received signal field intensity, judges whether to satisfy the switching condition that the received signal field intensity triggers; In this way, then initiating the recall type switches; As not, then continue step B2;
Step B2 according to frame error rate information, judges whether to satisfy the switching condition that frame error rate triggers.
5, method according to claim 4 is characterized in that, step B2 further comprises:
Step B21 according to frame error rate information, judges whether to satisfy lasting little error code switching condition; In this way, then initiating to continue little error code switches; As not, then continue step B22; And,
Step B22 according to frame error rate information, judges whether to satisfy the big error code switching condition of burst; In this way, then initiating big error code switches; As not, then keep, do not switch.
6, method according to claim 5 is characterized in that, step B21 and/or step B22 comprise that further one judges that according to the received signal field intensity switch to that channel switches still is the step that the recall type switches; When the received signal field intensity is higher than the setting thresholding, triggers channel and switch; When the received signal field intensity is lower than the setting thresholding, triggers the recall type and switch.
According to claim 1,2,3,5 or 6 described methods, it is characterized in that 7, steps A detects the change information of frame error rate and received signal field intensity by sliding window.
8, method according to claim 7 is characterized in that, sliding window detects and further comprises the detection of conventional variation sliding window and change the sliding window detection fast; Change sliding window fast and be used for when signal changes fast, field intensity detects to received signal, and the size of its detection window and detection step-length are determined by field testing according to the requirement of switch speed.
9, method according to claim 8 is characterized in that, utilizes the received signal field intensity information that changes the sliding window detection fast to judge whether the PHS system satisfies the switching condition that the received signal field intensity triggers; The channel that switches to that the received signal field intensity information of utilizing routine to change the sliding window detection is judged switches still recall type switching.
10, according to claim 1,2,3,5,6,8 or 9 described methods, it is characterized in that, comprise that further a uplink channel information of being obtained according to the received signal field intensity that detects judges whether up channel allows to initiate the step that channel switches.
11, method according to claim 10 is characterized in that, further comprise utilizing the timer control channel switching time of step at interval, thus the frequency that switches with control channel.
12, method according to claim 11 is characterized in that, further comprises the step of mobile phone and base station switching Comprehensive Control, specifically comprises:
Step 1 receives handoff request, and judges that handoff request still is the base station handoff request for the mobile phone handoff request; As be the mobile phone handoff request, change step 2 over to; As be the base station handoff request, change step 3 over to;
Step 2 has judged whether idle channel; If any, then distribute new channel, and transmitting channel switching indication, the instruction mobile phone switches to new channel, changes step 4 again over to; As do not have new channel, then send out the recall type and switch indication;
Step 3, whether the field intensity value of received signal of judging current detection is greater than the threshold value of setting; In this way, then distribute new channel, and transmitting channel switching indication, the instruction mobile phone switches to new channel, changes step 4 again over to; As do not have new channel, then send out the recall type and switch indication;
Step 4 discharges old channel, converses at new channel, and channel switching controls timer further is set;
Step 5 judges whether channel switching controls timer is overtime; In this way, carrying out channel switches; As not, then do not carry out channel and switch.
13, a kind of PHS base station switching device shifter is characterized in that, comprising:
The frame error rate detector is used to detect the frame error rate information of PHS system;
Received signal field intensity detector is used to detect the field intensity information of PHS system received signal;
The initiation controller is switched in the base station, be used for the information that reports according to frame error rate detector and received signal field intensity detector, according to initiating switching judging priority the switching type that the PHS system will initiate is judged, and initiated corresponding handoff request by the predetermined base station of different switch reasons; And
The base station switch controller is used to receive handoff request and carries out switching controls.
14, device according to claim 13 is characterized in that, the base station is initiated the priority of switching judging and determined by the influence degree that different switch reasons switches the PHS system.
According to claim 13 or 14 described devices, it is characterized in that 15, the base station is switched the initiation controller and further comprised:
The received signal field intensity triggers the switching judging module, is used for the device according to the received signal field intensity, judges whether to satisfy the switching condition that the received signal field intensity triggers;
Frame error rate triggers the switching judging module, is used for according to frame error rate information, judges whether to satisfy the switching condition that frame error rate triggers;
Wherein, received signal field intensity triggering switching judging module is higher than frame error rate triggering switching judging module priority.
16, device according to claim 15 is characterized in that, frame error rate triggers the switching judging module and further comprises:
Continue little error code switching judging module, be used for, judge whether to satisfy lasting little error code switching condition according to frame error rate information; And,
Big error code switching judging module is used for according to frame error rate information, judges whether to satisfy the big error code switching condition of burst;
Wherein, error code switching judging module priority is higher greatly to continue little error code switching judging module.
17, device according to claim 16, it is characterized in that, lasting little error code switching judging module and/or big error code switching judging module further comprise concrete switching type judge module, are used for judging that according to the field intensity of received signal switching to channel switches still recall type switching; Wherein, when the received signal field intensity is higher than the setting thresholding, be that channel switches; When the received signal field intensity is lower than the setting thresholding, be that the recall type switches.
According to claim 13,14,16 or 17 described devices, it is characterized in that 18, frame error rate detector and/or received signal field intensity detector further comprise the sliding window checkout gear.
19, device according to claim 18 is characterized in that, sliding window detects and further comprises the detection of conventional variation sliding window and change the sliding window detection fast; Change sliding window fast and be used for when signal changes fast, field intensity detects to received signal, and the size of its detection window and detection step-length are determined by field testing according to the requirement of switch speed.
20, device according to claim 19 is characterized in that, the base station switch controller further comprises a uplink channel information acquisition module, draws by the received signal field intensity, is used to judge whether up channel allows to initiate channel and switch.
According to claim 19 or 20 described devices, it is characterized in that 21, the base station switch controller further comprises a channel switching controls timer, be used for control channel interval switching time, thus the frequency that control channel switches.
22, device according to claim 21 is characterized in that, the base station switch controller further comprises:
One switches the Comprehensive Control module, be used to receive the handoff request that send mobile phone and/or base station, and the switching of corresponding mobile phone and/or base station is carried out in control;
Wherein, switching the Comprehensive Control module further comprises:
One mobile phone switching controls module has judged whether idle channel, then switches to new channel if having;
One base station switching controls module is used for carrying out judging whether the received signal field intensity satisfies switching condition when switch the base station; In this way, then switch to new channel;
One channel switches the frequency control module, is used to judge whether channel switching controls timer is overtime, then carries out channel in this way and switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100119350A CN1882160A (en) | 2005-06-15 | 2005-06-15 | PHS base station switching method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100119350A CN1882160A (en) | 2005-06-15 | 2005-06-15 | PHS base station switching method and its device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1882160A true CN1882160A (en) | 2006-12-20 |
Family
ID=37520080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100119350A Pending CN1882160A (en) | 2005-06-15 | 2005-06-15 | PHS base station switching method and its device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1882160A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138259A1 (en) * | 2007-05-11 | 2008-11-20 | Huawei Technologies Co., Ltd. | Method and system and device for registering process . |
| CN101854684A (en) * | 2010-05-17 | 2010-10-06 | 北京邮电大学 | Handover type based method for optimizing handover parameters in wireless celluar communication system |
| CN101534536B (en) * | 2008-03-13 | 2012-09-05 | 中兴通讯股份有限公司 | Method for indicating switch reasons |
-
2005
- 2005-06-15 CN CNA2005100119350A patent/CN1882160A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138259A1 (en) * | 2007-05-11 | 2008-11-20 | Huawei Technologies Co., Ltd. | Method and system and device for registering process . |
| CN101431797B (en) * | 2007-05-11 | 2012-02-01 | 华为技术有限公司 | Registration handling method, system and apparatus |
| US8537779B2 (en) | 2007-05-11 | 2013-09-17 | Huawei Technologies Co., Ltd. | Method, system, and apparatus for registration processing |
| US8787314B2 (en) | 2007-05-11 | 2014-07-22 | Huawei Technologies Co., Ltd. | Method, system, and apparatus for registration processing |
| USRE48067E1 (en) | 2007-05-11 | 2020-06-23 | Huawei Technologies Co., Ltd. | Method, system, and apparatus for registration processing |
| USRE49675E1 (en) | 2007-05-11 | 2023-09-26 | Huawei Technologies Co., Ltd. | Method, system, and apparatus for registration processing |
| CN101534536B (en) * | 2008-03-13 | 2012-09-05 | 中兴通讯股份有限公司 | Method for indicating switch reasons |
| CN101854684A (en) * | 2010-05-17 | 2010-10-06 | 北京邮电大学 | Handover type based method for optimizing handover parameters in wireless celluar communication system |
| CN101854684B (en) * | 2010-05-17 | 2012-11-14 | 北京邮电大学 | Handover type based method for optimizing handover parameters in wireless celluar communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1101623C (en) | Mobile telephone with identifying unit for communication channel switch | |
| CN1121100C (en) | Reconnection of dropped call in mobile communication system | |
| CN1179598C (en) | Mobile communication system and method for controlling communication of the same | |
| CN1758810A (en) | Soft handoff system, mobile terminal having the same and soft handoff method | |
| CN1147189C (en) | Communication terminal and wireless communication method | |
| CN101043714A (en) | Method and system for realizing mobility management of user equipment | |
| CN1112818C (en) | Method for controlling forward power in honeycomb mobile communication system | |
| CN1666540A (en) | Method and apparatus for UL interference avoidance by DL measurements and IFHO | |
| CN1678115A (en) | Relay switch-over method in TD-SCDMA mobile communication system | |
| CN1666537A (en) | Method and apparatus for selection of downlink carriers in a cellular system using multiple downlink carriers | |
| CN1889768A (en) | Switching method in wireless mobile communication system and system | |
| CN1784078A (en) | Active set selection method for determining cells to be deleted from an active set based on the reception state of an uplink high-speed signal | |
| CN1883221A (en) | Methods for performing cell reselection by using power scan and parallel decoding of a list of radio frequency channels, and corresponding apparatuses and media for storing instructions | |
| CN1717952A (en) | Inter-RAT cell reselection in a wireless communication network | |
| CN1901750A (en) | Detecting method and its system for missing matched adjacent zone | |
| CN1949919A (en) | Method for judging handover in mobile communication system | |
| CN101032180A (en) | Cell search control method and mobile device using the method | |
| CN1867188A (en) | Switching method, switching device and mobile terminal | |
| CN1513275A (en) | Carrier selection method | |
| CN1522093A (en) | Method of performing a handover or reselection procedure | |
| CN101061741A (en) | Enhanced dedicated-channel reporting for umts | |
| CN1691827A (en) | Allocation method and controller | |
| CN1933652A (en) | Switching back method after failure of relay switching | |
| CN1744456A (en) | A method for improving performances of a mobile radio communication system using a power control algorithm | |
| CN101043704A (en) | Method, network and apparatus for updating user equipment locating information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |