CN101069371B - Method of executing handoff of mobile terminal in mobile communications system - Google Patents
Method of executing handoff of mobile terminal in mobile communications system Download PDFInfo
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- CN101069371B CN101069371B CN2006800013170A CN200680001317A CN101069371B CN 101069371 B CN101069371 B CN 101069371B CN 2006800013170 A CN2006800013170 A CN 2006800013170A CN 200680001317 A CN200680001317 A CN 200680001317A CN 101069371 B CN101069371 B CN 101069371B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/022—One-way selective calling networks, e.g. wide area paging
- H04W84/027—One-way selective calling networks, e.g. wide area paging providing paging services
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Abstract
For a mobile communications system, a method of allowing a mobile station in idle state to perform handoffs in a more efficient manner is provided. This is achieved by receiving, from a source base station via a first channel, channel information of a second channel that is a different type of channel than the first channel, the second channel being used for transmitting overhead messages by at least one neighboring base station; determining a target base station among the one or more neighboring base stations; and receiving the second channel from the target base station by using the channel information.
Description
Technical field
The present invention relates to GSM, more specifically, relate to the method that a kind of idle condition mobile radio station that is used for GSM is carried out more efficiently and supported to switch.
Background technology
Fig. 1 illustrates the example of the overall calls processing procedure of the beginning that powers on of mobile radio station from GSM.When mobile radio station powers on; Read necessary system information and it is set to the RAM (perhaps other storage devices) from memory; Through use pilot channel and synchronizing channel carry out with system synchronously, and entering is used to receive the mobile station initialization state of the system information of requirement.In the message of passing through this synchronization channel transmissions (for example; Sync Channel Message) in; Include system information; With the frequency information that relates to mobile radio station this PCH of decoding PCH or P-BCCH (main BCCH), that allow idle condition or P-BCCH, and data transfer rate or encoding rate information.If adopt P-BCCH, then comprise the information that transmission diversity is relevant in addition.
This mobile radio station idle condition refers to so a kind of state; Promptly; After the mobile radio station of initial condition receives that all system informations and normal running are accomplished; Through using the information that transmits via Sync Channel Message, the state when receiving Overhead Message through PCH or P-BCCH from the base station.Some examples of these Overhead Messages are to comprise the relevant information system parameter message (SPM) of system; Extended System Parameters Message (ESPM); Comprise common neighbor list message (GNLM) about the information of neighbor cell or sector; Extending neighboring list message (ENLM), universal neighbor list message (UNLM), or the like.
System's access state refers to the state that allows mobile radio station to insert this system and inserts, and service condition refers to when the mobile radio station executive communication, promptly calls out the state when carrying out.When the mobile radio station that is in system's access state was accomplished specific operation, it returned idle condition or service condition.When being in idle condition, if do not receive that then initialization procedure begins once more through the message of PCH or P-BCCH transmission.For the mobile radio station of service condition, be terminated if call out when carrying out, then initialization procedure begins to rebulid synchronously once more.
This mobile radio station is not only measured the pilot signal strength of serving BS, and obtains the information about neighbor cell through adjacent message such as GNLM, ENLM, UNLM or the like, such as PILOT_PN or the like, and monitors the pilot signal strength of neighbor cell continuously.The result of monitoring is like this; If increasing, the pilot signal strength of neighbor cell surpasses a certain threshold value when comparing with the pilot signal strength of serving BS; Then mobile radio station is carried out idle the switching, and this refers to from having the base station paging receiving channel or the P-BCCH of bigger pilot signal strength.
Below, the base station that mobile radio station is moved to when carrying out idle the switching is known as target BS, and current base station is known as source base station (source base station).
Move to target BS and must receive in the situation of P-BCCH at the mobile radio station of paging receiving channel, prior art has run into a lot of problems, because this mobile radio station is not received the required any information of decoding P-BCCH from source base station.In more detail, shown in Fig. 2 and 3, in idle condition between transfer period; Idle condition is not directly to change to be idle condition; But mobile radio station moves to target BS and after the entering system confirmed sub-state, pilot channel and synchronizing channel just were received, and receives the information about P-BCCH from it; After this, get into idle condition.This has caused the problem that produces time delay.
In addition; From source base station paging receiving channel with will be when moving to target BS the situation of paging receiving channel; If data rate (for example changes owing to switching when moving to target BS again; Transform to 9600bps from 4800bps), then because the mobile radio station of prior art confirms that with the entering system sub-state just gets into idle condition then, so the problem of time delay may occur.When after the prior art mobile radio station that receives P-BCCH from source base station is implementing the switching of target BS, needing the paging receiving channel, similar problem appears.
Similarly; Receiving P-BCCH and will receive from target BS the situation of P-BCCH from source base station; If in target BS data rate or code rate or the variation of Walsh sign indicating number; Then the prior art mobile radio station can the entering system confirm that sub-state gets into idle condition then, thereby causes delay problem.
If this time delay appears at idle condition between transfer period, if when the prior art mobile radio station is in idle condition more from the source base station receiving broadcast service, then these time delays possibly influence quality of broadcasting service (QoS) greatly.In other words; When the prior art mobile radio station of idle condition during through forward supplemental channel (F-SCH) receiving broadcast service, when carrying out idle the switching, confirm sub-state through system and get into time that delay consumed in the idle condition during can not receive this broadcasting service.
Summary of the invention
Technical problem
One aspect of the present invention comprises the understanding to shortcoming in the prior art by the inventor, introduces like preceding text.Based on this understanding, can realize converting the improvement of idle condition handoff procedure according to the present invention.
The present invention has been developed to solve above-mentioned prior art problems.The result of an expectation of the present invention minimizes the unnecessary time delay that when the idle condition mobile radio station of GSM is carried out switching, possibly occur, thereby and the quality reduction at the specific transactions that receives from source base station is minimized.
The method that the present invention provides a kind of idle condition of the mobile radio station of supporting to be carried out by the base station of GSM to switch.The present invention provides a kind of method of switching of the idle condition mobile radio station of carrying out GSM, its carry out idle condition switch before and can continue to receive broadcasting or multicast service afterwards.
More specifically; The present invention confirms the configuration information that from the configuration information that adjacent base station is received, whether has target BS of storage formerly; And if confirm to have this configuration information then use the configuration information of the target BS of being stored to carry out idle the switching, if perhaps confirm not have this configuration information then retrieval system is confirmed sub-state.
The present invention provides a kind of method of when mobile radio station is in idle pulley, supporting switching, and this method comprises: the configuration information that receives and store adjacent base station; When checking the strength of pilot channels of adjacent base station, detection is greater than the pilot signal strength of the target BS of the echo signal intensity of source base station; Whether the configuration information of checking this target BS exists in the configuration information of the adjacent base station of storage; And confirm how to carry out idle the switching based on this inspection; Wherein, If this mobile radio station is being carried out the idle monitor for pages channel (PCH) that switches before; Selected to support that the adjacent base station of main BCCH (P-BCCH) is used for idle the switching, and received the parameter of the P-BCCH that is used for adjacent base station via broadcasting/packet service parameter message (BSPM), then this mobile radio station is carried out normal handoff procedure.
The present invention provides a kind of method of when mobile radio station is in idle pulley, supporting switching, and this method comprises: when the strength of pilot channels of a plurality of adjacent base stations of inspection, detection is greater than the pilot signal strength of the target BS of the pilot signal strength of source base station; Confirm configuration information from the configuration information that adjacent base station receives, whether the existing of this target BS in storage in advance; And if this configuration information exists then the configuration information execution switching of the target BS that use is stored; If perhaps this configuration information does not exist then the system that turns back to confirms sub-state; Wherein, This configuration information receives via the Overhead Message that comprises point multipoint message traffic parameter and adjacent bast station list, and wherein this Overhead Message is included in the parameter of sending the physical channel that uses in this Overhead Message, and this parameter indicates whether to support transmission diversity.
The advantage that the present invention adds, purpose and characteristic will partly be set forth in specification subsequently, and will partly will become obviously to those those of ordinary skills based on the following content of check, perhaps can from practice of the present invention, learn.As what specifically noted in the appended claims, can realize and obtain objects and advantages of the present invention.
Description of drawings
Fig. 1 illustrates in a kind of GSM the example of the overall calls processing procedure that begins from the mobile radio station electric power starting.
Fig. 2 and 3 illustrates according to idle hand-off execution process of the prior art.
Figure 4 and 5 illustrate according to idle hand-off execution process of the present invention.
Fig. 6 illustrates the flow process of example embodiment of the present invention.
Embodiment
The present invention is described as be implemented in the 3GPP2 type GSM.Yet; Characteristic of the present invention with the communication specification of other types (for example can also be suitable for and be implemented in; 3GPP, 4G, IEEE, OMA or the like) in the communication system of operation, because notion of the present invention can be used in a similar fashion the multiple communication plan based on common technical operation with instruction.
Equally; To under the background of broadcasting/packet service (BCMCS), explain the present invention; But characteristic of the present invention can be applied to the various types of point-to-multipoint services of multi-medium data to the user that provide, and transmits or the like such as multimedia broadcast/group broadcast service (MBMS), media broadcast, content.
Below with reference to explained non-limiting specific embodiment of the present invention.
For GSM; The present invention provides a kind of method, through this method, when the idle condition mobile radio station is carried out the switching between source base station and the target BS; Unnecessary time delay is minimized, and makes the quality of the business that receives from target BS reduce and is minimized.
Figure 4 and 5 have been explained the characteristic of some embodiments of the present invention.Using Overhead Message (such as GNLM, ENLM, UNLM or the like) from source base station to be sent to the situation of mobile radio station through PCH adjacent base station information; If this adjacent base station is the base station of transmitting Overhead Message through P-BCCH (perhaps other equivalence or similarly control channel); In order to support idle condition to switch, in advance via the channel information of Overhead Message from the P-BCCH of source base station receiving target base station.After switch accomplishing, this channel information is used to allow to receive Overhead Message with minimal time delay among the P-BCCH of receiving target base station.
Fig. 6 illustrates the flow process of the exemplary embodiment of the present invention.The mobile radio station that is in idle condition receives Overhead Message from source base station via PCH, and this Overhead Message comprises the channel information (S41) of the P-BCCH of at least more than one adjacent base station.
Source base station can receive this channel information from base station controller (BSC) or other network entity with similar functions.Some examples of these Overhead Messages are common neighbor list message (GNLM), extending neighboring list message (ENLM), universal neighbor list message (UNLM), BCMC service parameters message (BSPM) or the like.Here, be appreciated that the message that also can use other type with identical or similar functions.
BSPM message is a kind of like this message, and it is broadcasted the mobile radio station that is used to expect receiving broadcast service, and it comprises the control information that is used for the receiving broadcast service data.It should be noted that if do not receive BSPM, then mobile radio station can the entering system be confirmed sub-state before getting into idle condition, to obtain necessary broadcasting/packet service parameter.
Channel information refers to and is used to the information of P-BCCH of decoding, and can comprise the information that y is relevant with the transmission diversity of P-BCCH frequency of utilization, code rate, data rate and P-BCCH.Table 1 illustrates the example of data format of the channel information of the P-BCCH that comprises in the Overhead Message.This channel information can comprise all or part of the content of explanation in the table 1.
{ table 1}
| Field | Size (bit) |
| BCMC_SR1_BCCH_NON_TD_INCL | 1 |
| BCMC_SR1_NON_TD_FREQ_INCL | 0 or 11 |
| BCMC_SR1_CDMA_FREQ_NON_TD | 0 or 11 |
| BCMC_SR1_BRAT_NON_TD | 0 or 2 |
| BCMC_SR1_CRAT_NON_TD | 0 or 1 |
| BCMC_SR1_BCCH_CODE_CHAN_NON_TD | 0 or 6 |
| BCMC_SR1_TD_INCL | 1 |
| BCMC_SR1_CDMA_FREQ_TD | 0 or 11 |
| BCMC_SR1_BRAT_TD | 0 or 2 |
| BCMC_SR1_CRAT_TD | 0 or 1 |
| BCMC_SR1_BCCH_CODE_CHAN_TD | 0 or 6 |
| BCMC_SR1_TD_MODE | 0 or 2 |
| BCMC_SR1_TD_POWER_MODE | 0 or 2 |
| BCMC_SR3_INCL | 1 |
| BCMC_SR3_center_FREQ_INCL | 0 or 1 |
| BCMC_SR3_center_FREQ | 0 or 11 |
| BCMC_SR3_BRAT | 0 or 2 |
| BCMC_SR3_BCCH_CODE_CHAN | 0 or 7 |
| BCMC_SR3_PRIMARY_PILOT | 0 or 2 |
| BCMC_SR3_PILOT_POWER1 | 0 or 3 |
| BCMC_SR3_PILOT_POWER2 | 0 or 3 |
Here, it will be appreciated by those skilled in the art that the concrete name of the field of listing in the above-mentioned table 1 or label only are exemplary.Additional and/or other equivalence or similarly name or label also can be used for representing the specific fields that can use in the present invention.
In the example of table 1, for SR1 (spreading rate 1), comprising: the relevant information of whether using transmission diversity, according to the used frequency of P-BCCH whether transmission diversity uses, code rate, data rate.For SR3 (spreading rate 3), comprising the information of the used frequency of relevant P-BCCH, code rate, data rate.
Below with each field in the interpret table 1.
BCMC_SR1_BCCH_NON_TD_INCL is a designator, and whether its indication comprises BCCH information for the situation that is not TD (transmission diversity) pattern in SR1.
BCMC_SR1_NON_TD_FREQ_INCL is a designator, and it indicates whether to comprise the frequency information of the non-transmission diversity of SR1.
BCMC_SR1_CDMA_FREQ_NON_TD is the field that is used for the non-transmission diversity Frequency Distribution of SR1.
BCMC_SR1_BRAT_NON_TD is the BCCH data rate field in the non-transmission diversity mode of SR1.
BCMC_SR1_CRAT_NON_TD is the BCCH code rate field in the non-transmission diversity mode of SR1.
BCMC_SR1_BCCH_CODE_CHAN_NON_TD is the Walsh code field that is used at the SR1BCCH of non-transmission diversity mode.
BCMC_SR1_TD_INCL is an indicator field, and it comprises SR1 transmission diversity frequency information.
BCMC_SR1_CDMA_FREQ_TD is a SR1 Frequency Distribution field, and it is used for the transmission diversity operation.
BCMC_SR1_BRAT_TD is the BCCH data rate field in the SR1 transmission diversity mode.
BCMC_SR1_CRAT_TD is the code rate field in the SR1 transmission diversity mode.
BCMC_SR1_BCCH_CODE_CHAN_TD is the SR1BCCH Walsh code field in the transmission diversity mode.
BCMC_SR1_TD_MODE is a SR1 transmission diversity mode field.
BCMC_SR1_TD_POWER_MODE is a SR1 transmission diversity transmission power level field.
BCMC_SR3_INCL is an indicator field, and it indicates whether to comprise SR3 information.
BCMC_SR3_CENTER_FREQ_INCL is the field of indication center SR3 Frequency Distribution.
BCMC_SR3_CENTER_FREQ is a center SR3 Frequency Distribution field.
BCMC_SR3_BRAT is a SR3 BCCH data rate field.
BCMC_SR3_BCCH_CODE_CHAN is a SR3B CCH Walsh code field.
BCMC_SR3_PRIMARY_PILOT is first (master) SR3 pilot field.
BCMC_SR3_PILOT_POWER1 is a SR3 pilot power level field, and frequency lower in its two remaining SR3 frequencies is relevant.
BCMC_SR3_PILOT_POWER2 is a SR3 pilot power level field, its with two remaining SR3 frequencies in higher frequency relevant.
The example message that table 2 is illustrated in the information relevant with the P-BCCH of adjacent base station when notifying to mobile radio station by source base station via BSPM (BCMC service parameters message).In the table 2, the BCMC_NUM_NGHBR indication will be notified the quantity of the adjacent base station of P-BCCH relevant information through BSPM, and BCMC_NGHBR_PN comprises the PN offset information of each adjacent base station.The information that relates to BCMC_NGHBR_PN and P-BCCH has been comprised that { BCMC_NUM_NGHBR} equally repeatedly with adjacent base station quantity.
{ table 2}
Here, it will be appreciated by those skilled in the art that the concrete name of the field of listing in the above-mentioned table 2 or label only are exemplary.Additional and/or other equivalence or similarly name or label also can be used for representing the concrete field that can use in the present invention.
As send the method for this channel information to mobile radio station through source base station, the transmission that relates to all data of this channel information is possible, but it is also conceivable that another method.Just, can carry out the coupling of channel information and bit information according to the association (combination or set) of channel information.Here, the quantity of bit information is confirmed between source base station, mobile radio station and adjacent base station in advance.For example; For indicate adjacent base station ' configuration '; (it is one 3 bit field to NGHBR_CONFIG; By through GNLM to send with the number of times of adjacent base station quantity as much) retention be used to carry out the coupling of bit information of each related (combination or set) and 3 bits of P-BCCH frequency of utilization, code rate and data rate (it is comprised in the channel information); Thereby send the bit information that current channel information with the P-BCCH of adjacent base station has mated, therefore reduce the load that is used for channel information.In addition; When adjacent base station the time with predetermined specific frequency of utilization between source base station and mobile radio station, code rate and data rate transmission P-BCCH; Can come channel information by means of a simple procedure, for example with 1 bit ' indicate ' be set to ' 1 ' or the like.
Mobile radio station from the P-BCCH channel information of source base station receiving neighbor bs keeps the information of receiving based on the storage in the memory, and can between transfer period subsequently, use this information.
If the BCMC_SR1_BCCH_NON_TD_INCL that receives is set to ' 1 '; Then mobile radio station is stored the BCMC_SR1_NON_TD_FREQ_INCL that receives from the base station in memory; BCMC_SR1_BRAT_NON_TD; The value of BCMC_SR1_CRAT_NON_TD and BCMC_SR1_BCCH_CODE_CHAN_NON_TD, and if the BCMC_SR1_NON_TD_FREQ_INCL that receives be set to ' 1 ', then store the BCMC_SR1_CDMA_FREQ_NON_TD that receives from the base station.
If BCMC_SR1_TD_INCL is set to ' 1 '; Then store the BCMC_SR1_CDMA_FREQ_TD that receives from the base station; BCMC_SR1_BRAT_TD, BCMC_SR1_CRAT_TD, BCMC_SR1_BCCH_CODE_CHAN_TD; BCMC_SR1_TD_MODE, and BCMC_SR1_TD_POWER_MODE.
In addition; If the BCMC_SR3_BRAT_TD that receives from the base station were set to ' 1 ', BCMC_SR3_CENTER_FREQ_INCL then, BCMC_SR3_BRAT; BCMC_SR3_BCCH_CODE_CHAN; BCMC_SR3_PRIMARY_PILOT, BCMC_SR3_PILOT_POWER1, and the information of BCMC_SR3_PILOT_POWER2 is stored; And if BCMC_SR3_CENTER_FREQ_INCL be set to ' 1 ', the BCMC_SR3_CENTER_FREQ that then receives from the base station is stored equally.
Mobile radio station is monitored the pilot signal strength of adjacent base station continuously; And if the pilot signal strength of adjacent base station is increased on a certain thresholding above this source base station pilot signal strength, then corresponding adjacent base station is confirmed as target BS and carries out and switches (S42).
Carry out when switching, mobile radio station uses the channel information of receiving and keeping from source base station, comes to receive the P-BCCH (S43) that is sent by target BS with minimal time delay.Correspondingly; When the mobile radio station of free station through F-SCH (forward supplemental channel) when source base station receives different business when (such as broadcasting service); Even having carried out the free time of target BS switches; But have no the time delay that produces because process system before getting into idle condition confirms state, the business that therefore provides to continue do not have service disconnection from the target BS reception from source base station because can directly get into idle condition.
Running at target BS when carrying out the idle condition switching by mobile radio station will be explained in more detail hereinafter.When mobile radio station is carried out the sequence number initialization about Overhead Message; This Overhead Message will be received through P-BCCH from target BS; Primitively, will with the sequence number initialization about the Overhead Message of the access channel that relates to access channel or strengthen, from the PILOT_PN of source base station reception memorizer
STo be used to be set to the value of storing the BCMC_NGBHR_PN that keeps.As the result who receives Overhead Message from the P-BCCH of target BS, if the information of the expense that storage keeps is considered to nearest, then use the information of receiving to come new F-CCCH is carried out hash (hasing), and from this F-CCCH paging receiving or the like.As the result who receives Overhead Message, nearest if the information of the expense that in storage, keeps is not thought, then mobile radio station is carried out the initialization about the sequence number of related news.Whether Overhead Message is that nearest problem can be confirmed through the sequence number of the corresponding message relatively received and the sequence number of storage.After passing through said process; Mobile radio station comes relatively to confirm that NGBHR_FSCH_FREQ that the BSPM through source base station received and be retained in memory (promptly; The corresponding frequencies information of FSCH, this FSCH is the channel that is used for receiving broadcast service) whether with the CDMACH of target BS
SCoupling.If do not match, then with CDMACH
SBe set to NGHBR_FSCH_FREQ and in implementing the tuning process of new CDMA Channel, monitor broadcasting from FSCH.
Up to the present, explained wherein mobile radio station from source base station just at the paging receiving channel, move to the embodiment that this target BS receives P-BCCH then.As another embodiment; During when the mobile radio station that receives P-BCCH from source base station is being carried out the idle condition switching, moving to target BS and receive the process of P-BCCH; If data rate, code rate and/or Walsh sign indicating number change, then can use characteristic of the present invention.
If explain above-mentioned situation in more detail, so when the prior art mobile radio station is carried out switching and moved to target BS, because must confirm that state gets into idle condition, so time delay occurs through at first entering system.But according to the present invention; Mobile radio station is in advance from the P-BCCH channel information (frequency, data rate, code rate, Walsh sign indicating number or the like) of source base station via P-BCCH Overhead Message receiving target base station; Make and after switch accomplishing, use this channel information to come the P-BCCH of receiving target base station, to allow with the time delay of minimum or not have time delay reception Overhead Message.
In another embodiment of the present invention; From source base station paging receiving channel and after moving to target BS once more under the situation of paging receiving channel; Even data rate changes (for example changing to 9600bps from 4800bps) owing to switching when moving to target BS, also still can use characteristic of the present invention.In the case, the mobile station via Overhead Message is in advance from the paging channel information of source base station receiving neighbor bs (GNLM for example, ENLM; UNLM; BSPM or the like), makes to switch and accomplish the P-BCCH that uses this channel information to come the receiving target base station afterwards, allow not have time delay ground and receive Overhead Message.
In the further embodiment of the present invention; Receive P-BCCH from source base station but after moving to target BS under the situation of paging receiving channel; Even when moving to this target BS,, also still can use characteristic of the present invention owing to having difference in the default data speed (for example 9600bps) that switches in this PCH of target BS transmission.In the case, source base station is sent to mobile radio station via Overhead Message with the paging channel information (particularly current data speed) of target BS, to prevent or time delay unnecessary in the handoff procedure is minimized.
In order to realize aforesaid various characteristic, the present invention can adopt various types of hardware and/or component software (module).For example, the different hardware module can comprise execution necessary multiple circuit of said method step and assembly.Equally, Different software module (being carried out by processor and/or other hardware) can comprise execution necessary multiple coding of the inventive method step and agreement.
The present invention provides a kind of method of supporting the switching when mobile radio station is in idle pulley, and this method comprises: the configuration information that receives and store adjacent base station; In the strength of pilot channels of inspection adjacent base station, detect the pilot signal strength of its pilot signal strength greater than the target BS of the pilot signal strength of source base station; Whether inspection exists the configuration information of this target BS in the configuration information of the adjacent base station of storage; And confirm how to carry out idle the switching based on this inspection.
Should confirm that step comprised: if configuration information does not exist, the system that then turns back to confirms sub-state.Should confirm that step comprised:, then use the configuration information of this target BS of being stored to carry out idle the switching if configuration information exists.
This configuration information receives through Overhead Message.This Overhead Message comprises broadcasting/packet service parameter message (BSPM) and neighbor list message.This neighbor list message comprises common neighbor list message (GNLM), extending neighboring list message (ENLM), and at least one of universal neighbor list message (UNLM).
This Overhead Message comprises that indication idle condition mobile radio station is employed, send the field of information of the physical channel of Overhead Message therein.The information of this physical channel indicates whether to support transmission diversity.If the support transmission diversity then uses desired value to the parameter that comprises Frequency Distribution, data rate, code rate, Walsh sign indicating number, transmission diversity mode and power level.If do not support transmission diversity, then the parameter that comprises Frequency Distribution, data rate, code rate and Walsh sign indicating number is used suitable value.
If mobile radio station had been monitored PCH before carrying out idle the switching; And selected to support the idle adjacent base station that switches that is used for of P-BCCH; And mobile radio station has received the parameter of the P-BCCH of adjacent base station from BSPM, then mobile radio station is carried out normal handoff procedure.
Source base station sends Overhead Message via first control channel that is used for Overhead Message, and target BS sends Overhead Message via second control channel that is used for Overhead Message.This first and second control channel is a BCCH.This first control channel is PCH and second control channel is P-BCCH.
At least one of suitable value that this information comprises the pilot PN sequence side-play amount and is used for Frequency Distribution, data rate, code rate and Walsh sign indicating number.The amount that is complementary with the sum with adjacent base station provides this information.
In addition; The present invention provides a kind of method of supporting the switching when mobile radio station is in idle pulley, and this method comprises: when the strength of pilot channels of a plurality of adjacent base stations of inspection, detect its pilot signal strength greater than the target BS of the pilot signal strength of source base station; The configuration information of confirming target BS whether be present in storage in advance from the configuration information that adjacent base station receives; And if this configuration information exists, then use the configuration information of this target BS of being stored to carry out switching, if perhaps this configuration information does not exist then the system that turns back to confirms sub-state.
This configuration information receives via the Overhead Message that comprises point-to-multipoint service parameter and adjacent bast station list.This Overhead Message comprises the parameter of the physical channel that is used to send this Overhead Message, and this parameter has indicated whether support transmission diversity.If the support transmission diversity then comprises being used for Frequency Distribution data transfer rate, encoding rate, Walsh sign indicating number, transmission diversity mode, and the value of power level in this Overhead Message.If do not support transmission diversity, then in this Overhead Message, comprise being used for Frequency Distribution data transfer rate, encoding rate, and the value of Walsh sign indicating number.
Be provided for the parameter quilt of each adjacent base station respectively, make the sum of parameter mate the sum of adjacent base station.
Up to the present illustrated, the technical staff in field of the present invention will understand, and in technical scope of the present invention, different replaced, improvement and variation can be arranged, and be not limited to specific embodiment described herein and accompanying drawing.
Result and effect as for expectations more of the present invention; Switching manner of execution according to the mobile radio station that is in idle condition in the GSM; When the idle condition mobile radio station is carried out respectively through dissimilar Channel Transmission Overhead Message source base stations and the switching between the target BS time; Avoided unnecessary time delay, made the quality of service that in carrying out handoff procedure, receives to be kept and do not have quality of service to reduce from source base station.Particularly, before this mobile radio station that makes being received in of broadcasting or multicast service be in idle condition is carried out and is switched or after do not interrupt.
This specification has been explained various illustrative embodiment of the present invention.The various modifications and the equivalents of disclosed illustrative example in the scope overlay declaration book of claim.Therefore, following claim be should give, the modification, equivalent structure and the characteristic that conform to the spirit and scope of the present invention disclosed herein covered with reasonably maximized explanation.
Claims (17)
1. method of when mobile radio station is in idle pulley, support switching, this method comprises:
Receive and store the configuration information of adjacent base station;
When checking the pilot signal strength of adjacent base station, detection is greater than the pilot signal strength of the target BS of the pilot signal strength of source base station;
Whether the configuration information of checking this target BS exists in the configuration information of the adjacent base station of storage; And
If said configuration information exists, then use the configuration information of the said target BS of storage to carry out idle the switching,
Wherein, If this mobile radio station is being carried out the idle monitor for pages channel (PCH) that switches before; Selected to support that the adjacent base station of main BCCH (P-BCCH) is used for idle the switching; And received the parameter of the P-BCCH that is used for adjacent base station via broadcasting/packet service parameter message (BSPM), then this mobile radio station is carried out normal handoff procedure.
2. according to the method for claim 1, further comprise:
If this configuration information does not exist, then entering system confirms sub-state.
3. according to the method for claim 2, wherein this configuration information receives through Overhead Message.
4. method as claimed in claim 3, wherein this Overhead Message comprises broadcasting/packet service parameter message (BSPM) and neighbor list message.
5. method as claimed in claim 4, wherein this neighbor list message comprises at least one of common neighbor list message (GNLM), extending neighboring list message (ENLM) and universal neighbor list message (UNLM).
6. method as claimed in claim 3, wherein this Overhead Message comprise that indication is used by this mobile radio station that is in idle condition, send the field of information of the physical channel of Overhead Message therein.
7. method as claimed in claim 6, wherein the information of this physical channel indicates whether to support transmission diversity.
8. method as claimed in claim 7 if wherein support transmission diversity, then is used to comprise the desired value of the parameter of Frequency Distribution, data rate, code rate, Walsh sign indicating number, transmission diversity mode and power level.
9. method as claimed in claim 7 if wherein do not support transmission diversity, then is used to comprise the desired value of the parameter of Frequency Distribution, data rate, code rate and Walsh sign indicating number.
10. method as claimed in claim 6, wherein this configuration information comprises pilot PN sequence skew, is used at least one of desired value of Frequency Distribution, data rate, code rate and Walsh sign indicating number.
11. like the method for claim 10, the quantity of wherein mating with the sum with adjacent base station provides this configuration information.
12. method as claimed in claim 3, wherein this source base station sends Overhead Message via first control channel that is used for Overhead Message, and this target BS sends Overhead Message via second control channel that is used for Overhead Message.
13. like the method for claim 12, wherein this first and second control channel is a BCCH.
14. like the method for claim 13, wherein this first control channel is PCH, and this second control channel is P-BCCH.
15. a method of when mobile radio station is in idle pulley, supporting switching, this method comprises:
When the pilot signal strength of a plurality of adjacent base stations of inspection, detection is greater than the pilot signal strength of the target BS of the pilot signal strength of source base station;
Confirm configuration information from the configuration information that adjacent base station receives, whether the existing of this target BS in storage in advance; And
Use the configuration information of the target BS of storage to carry out if this configuration information exists and switch, if perhaps this configuration information does not exist then the system that turns back to confirms sub-state,
Wherein, this configuration information receives via the Overhead Message that comprises point multipoint message traffic parameter and adjacent bast station list, and wherein this Overhead Message is included in the parameter of sending the physical channel that uses in this Overhead Message, and this parameter indicates whether to support transmission diversity.
16.,, then in Overhead Message, comprise the value that is used for Frequency Distribution, data rate, code rate, Walsh sign indicating number, transmission diversity mode and power level if wherein support transmission diversity like the method for claim 15.
17.,, then in Overhead Message, comprise the value that is used for Frequency Distribution, data rate, code rate and Walsh sign indicating number if wherein do not support transmission diversity like the method for claim 15.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050011023 | 2005-02-05 | ||
| KR20050011023 | 2005-02-05 | ||
| KR10-2005-0011023 | 2005-02-05 | ||
| KR1020050013300 | 2005-02-17 | ||
| KR10-2005-0013300 | 2005-02-17 | ||
| KR20050013300 | 2005-02-17 | ||
| KR10-2005-0062826 | 2005-07-12 | ||
| KR1020050062826 | 2005-07-12 | ||
| KR1020050062826A KR20060089603A (en) | 2005-02-05 | 2005-07-12 | Method of executing handoff of mobile terminal in mobile communications system |
| PCT/KR2006/000411 WO2006083134A1 (en) | 2005-02-05 | 2006-02-03 | Method of executing handoff of mobile terminal in mobile communications system |
Publications (2)
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| CN101069371A CN101069371A (en) | 2007-11-07 |
| CN101069371B true CN101069371B (en) | 2012-10-31 |
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| CN2006800013170A Expired - Fee Related CN101069371B (en) | 2005-02-05 | 2006-02-03 | Method of executing handoff of mobile terminal in mobile communications system |
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| JP (1) | JP4477676B2 (en) |
| KR (1) | KR20060089603A (en) |
| CN (1) | CN101069371B (en) |
| AT (1) | ATE471603T1 (en) |
| BR (1) | BRPI0606181A2 (en) |
| DE (1) | DE602006014925D1 (en) |
| MX (1) | MX2007004703A (en) |
| TW (1) | TWI292675B (en) |
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| KR101441864B1 (en) * | 2008-03-14 | 2014-09-25 | 에스케이텔레콤 주식회사 | Method, System, Subsystem and Mobile Terminal for Establishing Connection for Packet Data Service |
| US8804658B2 (en) * | 2008-10-22 | 2014-08-12 | Mediatek Inc. | Method and apparatus for handover between IEEE 802.16e and 802.16m systems |
| CN104604292A (en) * | 2012-09-05 | 2015-05-06 | 高通股份有限公司 | Setting up network parameters after idle handoff of access terminal in wireless communications system |
| KR101510233B1 (en) * | 2013-01-29 | 2015-04-08 | 한국과학기술원 | Method, server, network relay node for changing status of node |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248138A (en) * | 1998-09-08 | 2000-03-22 | 三星电子株式会社 | Method and device for free switching in cellular |
| US6195551B1 (en) * | 1997-07-22 | 2001-02-27 | Shinsegi Telecomm, Inc. | Idle handoff controlling method in cellular communication system |
| CN1504050A (en) * | 2001-12-29 | 2004-06-09 | ���ǵ�����ʽ���� | Apparatus and method for initiating broadcast service by mobile station in mobile communication system |
-
2005
- 2005-07-12 KR KR1020050062826A patent/KR20060089603A/en unknown
-
2006
- 2006-02-03 MX MX2007004703A patent/MX2007004703A/en active IP Right Grant
- 2006-02-03 BR BRPI0606181-8A patent/BRPI0606181A2/en not_active IP Right Cessation
- 2006-02-03 DE DE602006014925T patent/DE602006014925D1/en active Active
- 2006-02-03 AT AT06715863T patent/ATE471603T1/en not_active IP Right Cessation
- 2006-02-03 JP JP2007554016A patent/JP4477676B2/en not_active Expired - Fee Related
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6195551B1 (en) * | 1997-07-22 | 2001-02-27 | Shinsegi Telecomm, Inc. | Idle handoff controlling method in cellular communication system |
| CN1248138A (en) * | 1998-09-08 | 2000-03-22 | 三星电子株式会社 | Method and device for free switching in cellular |
| CN1504050A (en) * | 2001-12-29 | 2004-06-09 | ���ǵ�����ʽ���� | Apparatus and method for initiating broadcast service by mobile station in mobile communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4477676B2 (en) | 2010-06-09 |
| BRPI0606181A2 (en) | 2009-06-02 |
| MX2007004703A (en) | 2007-06-14 |
| JP2008529442A (en) | 2008-07-31 |
| DE602006014925D1 (en) | 2010-07-29 |
| KR20060089603A (en) | 2006-08-09 |
| CN101069371A (en) | 2007-11-07 |
| TW200642502A (en) | 2006-12-01 |
| TWI292675B (en) | 2008-01-11 |
| ATE471603T1 (en) | 2010-07-15 |
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