CN102469616B - The collocation method that a kind of time delay accesses, time delay cut-in method and relevant device - Google Patents
The collocation method that a kind of time delay accesses, time delay cut-in method and relevant device Download PDFInfo
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Abstract
The collocation method that the embodiment of the present invention provides a kind of time delay to access, time delay cut-in method and relevant device, strictly to determine a delay time, improve the access success rate of terminal.Described method comprises network equipment and obtains terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously; Described network equipment sends one and is not less than the time value of described delay value to described terminal, to make described terminal to be not more than the time delay channel request CR of described time value.Compared with prior art, the present invention can make terminal channel request CR within the scope of rational delay time, both terminal blindly channel request CR can have been avoided, terminal can be avoided again to do meaningless wait (namely having exceeded rational delay time), meanwhile, also can reduce the probability accessing collision generation, improve access success rate.
Description
Technical field
The present invention relates to Access Network field, particularly relate to the collocation method of a kind of time delay access, time delay cut-in method and relevant device.
Background technology
Machine To Machine (M2M, Machine to Machine) communication is coupled together by the multiple communication technology various end-equipment or subsystem, and they are aggregated into management system, realizes the management and service to equipment.Under this M2M, the equipment (i.e. terminal) having enormous amount is linked in network.Typically, at a time, a large amount of terminals may initiate access to network side simultaneously, and such as, when train is by bridge, the sensing equipment that bridge is installed senses that train passes through, and these sensing equipments almost send sensing data simultaneously; For another example, when flood covers police circles' line, also have a large amount of water wave transducers and send data simultaneously.
The GSM network used on a large scale, becomes one of interconnected selection of terminal under M2M.In gsm system, if travelling carriage (MS, Mobile Station) need to set up communication with network, need by Common Control Channel (CCCH, Common Control CHannel) uplink random access channel (RACH, Random Access CHannel) send a channel request (CR, Channel Request) with to system application signaling channel to network side.After network side receives the CR of terminal, then send assignment messages or appointment refuse information immediately in the descending assigned channels immediately (AGCH, Access Grant Channel) of CCCH to terminal.Assignment messages immediately that what if terminal received is, then terminal and network side connect, and carry out the transmission of signaling or data; If what terminal received is assign refuse information, then terminal exits access process.After terminal sends CR, if do not receive the response (ACK) of network side to this CR, terminal will resend CR on RACH, until the number of times sent to reach M+1 (M is maximum number of retransmissions) secondary.
When great amount of terminals access network simultaneously, inevitably there is the phenomenon that two or more terminal robs a RACH time slot channel request simultaneously, so-called access collision that Here it is.The consequence of access collision has two, and the level that first network receives a burst in gap is at this moment significantly high than another, and so, network can process that higher random CR of level; Another consequence is, due to interference mutual between the two, any one CR network all can not correctly receive.Thus along with the growth of traffic carrying capacity, the probability that message is lost because of collision is also just increasing, and this will be an important restriction factor to network capacity.
Send access request for great amount of terminals simultaneously, cause RACH congested, thus cause terminal cannot the problem of access network, industry proposes a kind of solution and is: terminal is before sending CR first, and random delay sends CR after a period of time again.Random delay can be concrete how many time slots during this period of time, such as, terminal is from time slot sets { 1,5,9 ..., choose a time slot in N} randomly, suppose that this time slot is 100, then, before this terminal sends CR to network side first, just send after waiting for 100 time slots.Send first after CR, subsequent retransmissions process with machine-processed the same before, without any change.
In above-mentioned existing solution, terminal is that the time slot of Stochastic choice from time slot sets is as delay time, because the maximum in time slot sets does not have strict definition base, therefore, access success rate (the ASR that CR can not ensure terminal is sent according to the time slot delay therefrom selected, Access Successful Rate), such as, the time slot too small (namely delay time is too short) selected, even if time delay sends, the probability that access collision occurs is still comparatively large, and terminal does not still reach the ASR specified.
Summary of the invention
The collocation method that the embodiment of the present invention provides a kind of time delay to access, time delay cut-in method and relevant device, strictly to determine a delay time, improve the access success rate of terminal.
The collocation method that the embodiment of the present invention provides a kind of time delay to access, comprising: network equipment obtains terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously;
Described network equipment sends one and is not less than the time value of described delay value to described terminal, to make described terminal to be not more than the time delay channel request CR of described time value.
A kind of method that the embodiment of the present invention provides time delay to access, comprising: terminal receives the time value that network equipment sends;
Described terminal according to described time value, random delay a period of time channel request CR;
Described time value be not less than described network equipment according to corrected parameter, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, a period of time of described time delay is not more than described time value of specifying.
The embodiment of the present invention provides a kind of network equipment, comprise: time delay value acquisition module, for obtaining terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously;
Sending module, is not less than the time value of described time delay value to described terminal, to make described terminal to be not more than the time delay channel request CR of described time value for sending one.
The embodiment of the present invention provides a kind of terminal, comprising: receiver module, for receiving the time value that network equipment sends;
Channel request sending module, for according to described time value, random delay a period of time channel request CR;
Described time value be not less than described network equipment according to corrected parameter, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, a period of time of described time delay is not more than described time value.
The embodiment of the present invention provides a kind of time delay connecting system, comprising: network equipment and terminal:
Described network equipment, for obtaining terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously, send one and be not less than the time value of described delay value to described terminal, to make described terminal to be not more than the time delay channel request CR of described time value;
Described terminal, for receiving the time value that network equipment sends, according to described time value, random delay a period of time channel request CR;
Described time value be not less than described network equipment according to corrected parameter, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, a period of time of described time delay is not more than described time value.
From the invention described above embodiment, because network equipment is with the quantity of the terminal of corrected parameter, the GSM network of initiation access simultaneously with for the quantity of the Common Control Channel CCCH of cell configuration is for foundation, strictly obtain the time delay value of terminal access needed for GSM network after considering these factors, thus the delay time of terminal channel request CR is also provided with the upper limit determined.Therefore, compared with prior art, the present invention can make terminal channel request CR within the scope of rational delay time, both terminal blindly channel request CR can have been avoided, terminal can be avoided again to do meaningless wait (namely having exceeded rational delay time), meanwhile, also can reduce the probability accessing collision generation, improve access success rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the required accompanying drawing used in prior art or embodiment description below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained as these accompanying drawings.
Fig. 1 is the collocation method schematic flow sheet of the time delay access that the embodiment of the present invention provides;
Fig. 2 is the channel combination structural representation comprising CCCH channel that the embodiment of the present invention provides;
Fig. 3 is the channel combination structural representation comprising CCCH channel that another embodiment of the present invention provides;
Fig. 4 is the method flow schematic diagram of a kind of time delay access that the embodiment of the present invention provides;
Fig. 5 is a kind of network equipment logical construction schematic diagram that the embodiment of the present invention provides;
Fig. 6 is a kind of terminal logic structural representation that the embodiment of the present invention provides;
Fig. 7 is a kind of time delay connecting system logical construction schematic diagram that the embodiment of the present invention provides;
Fig. 8 is terminal Cumulative Distribution Function in the GSM network community that provides of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below with the terminal in GSM network, such as, it is example that travelling carriage (MS, Mobile Station) accesses GSM network, and the collocation method that time delay provided by the invention accesses is described.
Referring to accompanying drawing 1, is the collocation method schematic flow sheet of the time delay access that the embodiment of the present invention provides.Mainly comprise step:
S101, network equipment obtains terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously.
Network equipment can be base station sub-system (BSS, Base Station Subsystem), comprise base station (BTS, Base Transceiver Station) or base station controller (BSC, Base Station Controller) etc., terminal can be mobile station MS, the access success rate that corrected parameter and terminal access GSM network is relevant, such as, to ask the access success rate of terminal access GSM network larger, then corrected parameter also should be larger.
It should be noted that, in embodiments of the present invention, be not only discrete access success rate can with corrected parameter one_to_one corresponding, also can be the access success rate in one section of continuous span and corrected parameter one_to_one corresponding.Such as, access success rate and be respectively E
asrand F
asr(herein, F
asrbe greater than E
asr) time, corrected parameter can be P respectively
m1and P
m2(herein, P
m2be greater than P
m1); Access success rate is respectively [A
asr, B
asr] and [C
asr, D
asr] (herein, B
asrbe greater than A
asr, C
asrbe greater than B
asr, D
asrbe greater than C
asr) time, corrected parameter can be P respectively
m3and P
m4(herein, P
m4be greater than P
m3).Typically, when requiring that the access success rate that terminal accesses GSM network is more than or equal to 97%, corrected parameter can get 6.25.
In embodiments of the present invention, the quantity of terminals all in GSM network community can be estimated as roughly the quantity of the terminal simultaneously initiating access GSM network; If more accurately, also can by the number of users of certain rank in calculation plot, using this number of users as the quantity initiating the terminal accessing GSM network simultaneously, such as, M2M applies the quantity of all meter reading terminals in small area, or network side estimates the number of users that (such as, 1 second or 1 minute etc.) in the short time may initiate to access, using this number of users as initiating the terminal quantity accessing GSM network simultaneously.
In embodiments of the present invention, time delay value can use timeslot number to represent, that is, computing network side apparatus is time slot according to corrected parameter, the unit that initiates the time delay value that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculate simultaneously.Time delay value means that the time that terminal needs at most this time delay value of time delay to represent sends CR, and the access success rate of access GSM network just can reach the requirement of specifying.
S102, network equipment sends one and is not less than the time value of described delay value to described terminal.
The time value being not less than the delay value that step S101 obtains that network equipment sends also can use timeslot number to represent.Suppose that this time delay value that network equipment calculates according to corrected parameter, the quantity of terminal initiating access GSM network and the quantity of Common Control Channel CCCH is simultaneously 100 time slots, then network equipment is 100 time slots to the time value that terminal sends, network equipment also can be larger than 100 time slots to the time value that terminal sends, such as 110 time slots.
After terminal receives this time value of network equipment transmission, can Stochastic choice time delay a period of time channel request, as long as the time of this section of time delay is not more than the time value that network equipment sends, then the access success rate accessing GSM network just can reach the requirement of specifying.
From the invention described above embodiment, because network equipment is with the quantity of the terminal of corrected parameter, the GSM network of initiation access simultaneously with for the quantity of the Common Control Channel CCCH of cell configuration is for foundation, strictly obtain the time delay value of terminal access needed for GSM network after considering these factors, thus the delay time of terminal channel request CR is also provided with the upper limit determined.Therefore, compared with prior art, the present invention can make terminal channel request CR within the scope of rational delay time, both terminal blindly channel request CR can have been avoided, terminal can be avoided again to do meaningless wait (namely having exceeded rational delay time), meanwhile, also can reduce the probability accessing collision generation, improve access success rate.
Because the uplink random of access procedure and CCCH channel accesses channel (RACH, Random AccessCHannel) and the descending (AGCH of assigned channels immediately, Access Grant Channel) relevant, namely, how many access of terminal and resources of RACH and AGCH have substantial connection, and their resource is more, and what access procedure collided may be less, network equipment can easilier be assigned terminal, thus the whole access procedure success rate of terminal can be higher; Otherwise then accessing success rate can be lower, therefore, below in conjunction with CCCH channel architecture, the collocation method that time delay of the present invention accesses can be described.
In gsm system, the up of CCCH channel is made up of RACH, is descendingly made up of PCH and AGCH, and up channel and down channel form a multi-frame by 51 tdma frames.As shown in Figure 2, be a kind of channel combination structural representation comprising CCCH channel that the embodiment of the present invention provides, the numeral 0 to 50 in figure represents the 0 to 50 time division multiple access (TDMA, Time Division Multiple Access) frame.This channel is by frequency correction channel (FCCH, Frequency Correct CHannel), synchronizing channel (SCH, Synchronization CHannel), Broadcast Control Channel (BCCH, Broadcast ControlCHannel) and Common Control Channel (CCCH, Common Control CHannel) combine, " FCCH+SCH+BCCH+CCCH " is used to represent, the channel (using " FCCH+BCCH " to represent) that BCCH channel of broadcast control and Common Control Channel CCCH are combined into is identical with aggregate channel " FCCH+SCH+BCCH+CCCH ", wherein, the up channel that 51 multi-frames are formed accesses frame (using " R " mark in the accompanying drawings) containing 51 RACH, down channel comprises 9 descending CCCH blocks (using " C " mark in the accompanying drawings), each descending CCCH block is made up of 4 tdma frames.
Accompanying drawing 3 is a kind of channel combination structural representations comprising CCCH channel that another embodiment of the present invention provides, and the numeral 0 to 50 in figure represents the 0 to 50 tdma frame.This channel is by frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control, Common Control Channel CCCH, 4 Separate Dedicated Control Channel (SDCCH, Stand-alone Dedicated Control CHannel) and 4 slow associated control channel (SACCH, Slow Associated Control CHannel) combine, wherein, the up channel that 51 multi-frames are formed accesses frame (using " R " mark in the accompanying drawings) containing 27 RACH, down channel comprises 3 descending CCCH blocks (using " C " mark in the accompanying drawings), each descending CCCH block is made up of 4 tdma frames.
It is no matter the channel combination of accompanying drawing 2 or accompanying drawing 3 example, the descending CCCH block of CCCH channel all can be used as paging channel (PCH, Paging Channel) or assigned channels (AGCH immediately, Access GrantChannel), concrete configuration is represented by the parameter BS_AG_BLKS_RES of system broadcasts, work as BS_AG_BLKS_RES=0, expression system is distributed automatically.The network equipment obtains the time delay value that terminal accesses needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter is simultaneously
here, N_Devices is the quantity simultaneously initiating the terminal accessing GSM network, P
mfor corrected parameter, N_CCCHs is the quantity of Common Control Channel CCCH, and N_Agchs is for assigning the quantity of the assignment blocks of user in descending CCCH block, and N is the number of users that each assignment blocks is assigned.Corrected parameter P
mrelevant to the access success rate that terminal accesses GSM network, require that the access success rate of terminal access GSM network is larger, then this corrected parameter also should be larger
Combine according to the channel of accompanying drawing 2 example, if the whole descending CCCH block of CCCH channel is for assigning unique user, namely, the whole descending CCCH block of CCCH channel is used as AGCH and is only used for appointment user, now, Parameter N _ Agchs is actually 9 (this kind of lower CCCH channel of channel combination has 9 descending CCCH blocks), then network device computes goes out the time delay value of terminal access needed for GSM network and is
Combine according to the channel of accompanying drawing 3 example, if the whole descending CCCH block of CCCH channel is for assigning unique user, namely, the whole descending CCCH block of CCCH channel is used as AGCH and is only used for appointment user, now, Parameter N _ Agchs is actually 3 (this kind of lower CCCH channel of channel combination has 3 descending CCCH blocks), then network device computes goes out the time delay value of terminal access needed for GSM network and is
Combine according to the channel of accompanying drawing 2 or accompanying drawing 3 example, if the tdma frame number that each assignment blocks comprises is less than 4, that is, each assignment blocks is for assigning multiple user, then without loss of generality, network device computes goes out the time delay value of terminal access needed for GSM network and is
herein, N_Devices, P
mand the whole descending CCCH block of N_CCCHs and CCCH channel is identical for implication when assigning user, and N is the number of users that each assignment blocks is assigned.
Please refer to accompanying drawing 8, terminal Cumulative Distribution Function (CDF in the GSM network community that the embodiment of the present invention provides, Cumulative distribution function), in Cumulative Distribution Function, transverse axis is the carrier/interface ratio (CIR of terminal, Carrierto Interference Ratio), the longitudinal axis is the terminal proportion in community with corresponding CIR.Below in conjunction with the CDF of accompanying drawing 8, retransmit with network equipment setting terminal that the maximum times of CR is 4, the access success rate (ASR of terminal access GSM network, Access Success Ratio) be not less than 97% for example, illustrate the collocation method of time delay of the present invention access.Under this setting requires, corrected parameter P
mcan be 6.25.
Not considering path loss and assigning unsuccessfully ideally, putting into practice by emulating, think the mathematical expectation λ each RACH time slot sending first the number of users of CR maximum can be 0.2.Under non-ideal conditions, namely consider path loss and assign failed situation, λ value can lower than 0.2.A large amount of emulation practices shows when λ value≤0.16, and the ASR of terminal can reach the requirement of specifying.If community only configure a CCCH channel and channel combination as shown in Figure 2, then now just equal the RACH timeslot number (i.e. N_DelaySlots=N_RachSlots) in this period at the interval corresponding timeslot number of time delay.According to above-mentioned relation, adopt N_DelaySlots to represent the time delay value of terminal access needed for GSM network, then N_DelaySlots should meet following inequality:
N_DelaySlots≥N_Devices×6.25 (1)
In inequality (1), N_Devices is the quantity of terminal on a Common Control Channel CCCH in GSM network community, and the unit of N_DelaySlots uses time slot to represent.Network equipment calculates a time value (unit is time slot) according to expression formula on the right of inequality (1) sign of inequality, such as, 100 time slots, so, when the time value of these 100 time slots is sent to terminal by network equipment, the time that terminal time delay sends CR just can be selected arbitrarily between 0 to 100 time slot.
Network equipment also can send a time value (unit be time slot) larger than expression formula on the right of inequality (1) sign of inequality to terminal, such as, suppose that on the right of inequality (1) sign of inequality, expression formula is 100 time slots, when then the time value of 110 time slots also can be sent to terminal by network equipment, the time that terminal time delay sends CR just can be selected arbitrarily between 0 to 110 time slot.
If the multiple Common Control Channel CCCH of GSM network cell configuration, then inequality (1) is modified to:
Its implication of parameter that inequality (2) is identical with inequality (1) is identical, wherein, and N_CCCH
sfor the quantity of the Common Control Channel CCCH of GSM network cell configuration.Obviously, inequality (1) can be considered as the N_CCCH of inequality (2)
sget 1, that is, the special case when Common Control Channel CCCH of GSM network cell configuration is 1.
Network equipment calculates a time value (unit is time slot) according to expression formula on the right of inequality (2) sign of inequality, such as, 80 time slots, so, when the time value of these 80 time slots is sent to terminal by network equipment, the time that terminal time delay sends CR just can be selected arbitrarily between 0 to 80 time slot.
Network equipment also can send a time value (unit be time slot) larger than expression formula on the right of inequality (1) sign of inequality to terminal, such as, suppose that on the right of inequality (2) sign of inequality, expression formula is 80 time slots, then, when the time value of 90 time slots also can be sent to terminal by network equipment, the time that terminal time delay sends CR just can be selected arbitrarily between 0 to 90 time slot.
Inequality (1) and inequality (2) are at the whole descending CCCH block of CCCH channel for assigning user, that is, obtain under the whole descending CCCH block of CCCH channel is used as this prerequisite of AGCH.As previously mentioned, the descending CCCH block of CCCH channel both can be used as PCH, can be used as AGCH again.If the descending CCCH block of part is for assigning user in the descending CCCH block of Common Control Channel CCCH, namely, the descending CCCH block of a part of Common Control Channel CCCH is used as AGCH, and the descending CCCH block of another part is used as PCH, then inequality (2) is modified to further:
In inequality (3), N_Devices is identical for implication when assigning user with the whole descending CCCH block of N_CCCHs and CCCH channel, and for assigning the quantity of the assignment blocks (i.e. AGCH block, each AGCH block comprises 4 tdma frames) of user in the N_Agchs descending CCCH block that is part.In embodiments of the present invention, N_Agchs is relevant, specific as follows to the parameter BS_AG BLKS_BES that network side configures:
When BS_AG_BLKS_RES ≠ 0, BS_AG_BLKS_RES represents the quantity of the AGCH block of system assignment, now, and N_Agchs=BS_AG_BLKS_RES; As BS_AG_BLKS_RES=0, expression system is distributed automatically, now can suppose N_Agchs=9 (channel as accompanying drawing 2 example combines) or N_Agchs=3 (channel as accompanying drawing 3 example combines).
According to above-mentioned inequality (1), (2), (3), when the quantity of GSM network cell terminal is 100 to 1000, the numerical value of the N_DelaySlots of network equipment configuration can reference table 1 (combined by the channel of accompanying drawing 2 example and obtain) and table 2 (channel of accompanying drawing 3 example combines and obtains).
Table 1
Table 2
In previous embodiment, inequality (1), (2) and (3) obtain for assigning a user based on each assignment blocks.In another embodiment provided by the invention, if the tdma frame number that each assignment blocks comprises is less than 4, that is, each assignment blocks is for assigning multiple user, then inequality (3) is modified to:
Herein, N is the number of users that each assignment blocks is assigned.
Similarly, network equipment calculates a time value (unit is time slot) according to expression formula on the right of inequality (4) sign of inequality, such as, 120 time slots, so, when the time value of these 120 time slots is sent to terminal by network equipment, the time that terminal time delay sends CR just can be selected arbitrarily between 0 to 120 time slot.Network equipment also can send a time value (unit be time slot) larger than expression formula on the right of inequality (4) sign of inequality to terminal, such as, suppose that on the right of inequality (4) sign of inequality, expression formula is 120 time slots, then, when the time value of 140 time slots also can be sent to terminal by network equipment, the time that terminal time delay sends CR just can be selected arbitrarily between 0 to 140 time slot.
Previous embodiment describes the action in the collocation method that network equipment accesses in time delay, and following examples are with terminal, and such as, travelling carriage (MS, Mobile Station), illustrates the method that time delay accesses.
Refer to Fig. 4, the method flow schematic diagram of a kind of time delay access that the embodiment of the present invention provides, comprises step:
S401, terminal receives the time value that network equipment sends.
In embodiments of the present invention, not channel request CR immediately when terminal starts access GSM network, but the time value receiving that network equipment sends.
S402, the time value that terminal sends according to network equipment, random delay a period of time channel request CR.
The time value that network equipment sends be not less than network equipment according to corrected parameter, initiate needed for terminal access GSM network that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates time delay value simultaneously, and random delay a period of time is not more than the time value of specifying.
Without loss of generality, in the present embodiment, the time delay value that network equipment accesses needed for GSM network according to the terminal that corrected parameter, the quantity of terminal initiating access GSM network and the quantity of Common Control Channel CCCH calculate simultaneously is
wherein, N_Devices is the described quantity simultaneously initiating the terminal of access GSM network, P
mfor described corrected parameter, N_CCCHs is the quantity of described Common Control Channel CCCH, and N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of described part, and N is the number of users that described each assignment blocks is assigned.
Particularly, if the whole descending CCCH block of described Common Control Channel CCCH is for assigning unique user, then, under the integrated mode of channel FCCH+SCH+BCCH+CCCH or BCCH+CCCH, described time delay value is
in channel FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4, described time delay value is
That is, time delay value
be
the special case that middle N is 1, N_Agchs is 9 (such as, in the channel combination of accompanying drawing 2 example, 9 descending CCCH blocks are all for assigning a user), and time delay value
be
middle N is 1, N_Agchs be 3 special case of (in the channel combination of such as, accompanying drawing 3 example, 3 descending CCCH blocks are all for assigning a user).
If each assignment blocks is for assigning multiple user, then without loss of generality, be no matter the channel combination of accompanying drawing 2 or accompanying drawing 3 example, its time delay value is
In the present embodiment, time delay value, the time value of network equipment transmission and a period of time of terminal random delay all represent with time slot.For example, suppose that network equipment setting terminal retransmits that the maximum times of CR is 4, the access success rate ASR of terminal access GSM network is not less than 97%, corrected parameter P
mbe 6.25.If network equipment is according to corrected parameter P
m, to initiate the time delay value of terminal access needed for GSM network that the access quantity N_Devices of terminal of GSM network and the quantity N_CCCHs etc. of Common Control Channel CCCH calculates be 625 time slots simultaneously, when then the time value of these 625 time slots is sent to terminal by network equipment, a period of time of terminal time delay transmission CR just can at time slot sets { 1,2,3, ..., Stochastic choice in 625}.
From above-described embodiment, there has been the upper limit determined a period of time sending CR due to terminal time delay, such as, 625 time slots, then terminal is unlikely to do meaningless wait when time delay sends CR, such as, just sends CR after waiting for 1200 time slots.
Network equipment also can send the large time value (unit is time slot) of time delay value that a ratio calculates to terminal, such as, suppose that the time delay value calculated is 625 time slots, when then the time value of 690 time slots also can be sent to terminal by network equipment, a period of time of terminal time delay transmission CR just can at time slot sets { 1,2,3, ..., select arbitrarily in 625..., 690}.
Referring to Fig. 5, is a kind of network equipment logical construction schematic diagram that the embodiment of the present invention provides.For convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.Network equipment shown in Fig. 5 comprises time delay value acquisition module 501 and sending module 502, wherein:
Time delay value acquisition module 501, for obtaining terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously.
Without loss of generality, in the present embodiment, the time delay value that network equipment accesses needed for GSM network according to the terminal that corrected parameter, the quantity of terminal initiating access GSM network and the quantity of Common Control Channel CCCH calculate simultaneously is
wherein, N_Devices is the described quantity simultaneously initiating the terminal of access GSM network, P
mfor described corrected parameter, N_CCCHs is the quantity of described Common Control Channel CCCH, and N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of described part, and N is the number of users that described each assignment blocks is assigned.
Particularly, if the whole descending CCCH block of described Common Control Channel CCCH is for assigning unique user, then, under the integrated mode of channel FCCH+SCH+BCCH+CCCH or BCCH+CCCH, described time delay value is
in channel FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4, described time delay value is
That is, time delay value
be
the special case of middle N to be 1, N_Agchs be 9 (such as, in the channel combination of accompanying drawing 2 example, 9 descending CCCH blocks are all for assigning a user), and time delay value
be
the special case that to be 1, N_Agchs be middle N 3 (in the channel combination of such as, accompanying drawing 3 example, 3 descending CCCH blocks are all for assigning a user).
If each assignment blocks is for assigning multiple user, then without loss of generality, be no matter the channel combination of accompanying drawing 2 or accompanying drawing 3 example, its time delay value is
Sending module 502, is not less than the time value of described time delay value to described terminal, to make described terminal to be not more than the time delay channel request CR of described time value for sending one.
Referring to Fig. 6, is a kind of terminal logic structural representation that the embodiment of the present invention provides.For convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.Terminal shown in Fig. 6 comprises receiver module 601 and channel request sending module 602, wherein:
Receiver module 601, for receiving the time value that network equipment sends;
Channel request sending module 602, for according to described time value, random delay a period of time channel request CR;
Described time value be not less than described network equipment according to corrected parameter, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, a period of time of described time delay is not more than described time value.
Particularly, time delay value can be
wherein, N_Devices is the described quantity simultaneously initiating the terminal of access GSM network, P
mfor described corrected parameter, N_CCCHs is the quantity of described Common Control Channel CCCH, and N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of described part, and N is the number of users that described each assignment blocks is assigned.
Referring to Fig. 7, is a kind of time delay connecting system logical construction schematic diagram that the embodiment of the present invention provides.For convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.Described system comprises the network equipment 701 of accompanying drawing 5 example and the terminal 702 of accompanying drawing 6 example, wherein:
Network equipment 701, for obtaining terminal access time delay value needed for described GSM network according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH and corrected parameter simultaneously, send one and be not less than the time value of described delay value to described terminal 702, to make described terminal to be not more than the time delay channel request CR of described time value;
Terminal 702, for receiving the time value that network equipment 701 sends, according to described time value, random delay a period of time channel request CR.
Time value be not less than described network equipment according to corrected parameter, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, a period of time of described time delay is not more than described time value.
Particularly, this time delay value can be
wherein, N_Devices is the described quantity simultaneously initiating the terminal of access GSM network, P
mfor described corrected parameter, N_CCCHs is the quantity of described Common Control Channel CCCH, and N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of described part, and N is the number of users that described each assignment blocks is assigned.
It should be noted that, the content such as information interaction, implementation between each module/unit of said apparatus, due to the inventive method embodiment based on same design, its technique effect brought is identical with the inventive method embodiment, particular content see describing in the inventive method embodiment, can repeat no more herein.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
Collocation method, time delay cut-in method and relevant device that the time delay provided the embodiment of the present invention above accesses are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a collocation method for time delay access, it is characterized in that, described method comprises:
Network equipment, according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH, corrected parameter and for assigning the quantity of the assignment blocks of user simultaneously, obtaining terminal and accessing time delay value needed for described GSM network; Described time delay value is
wherein, described N_Devices is the quantity simultaneously initiating the terminal accessing described GSM network, Pm is described corrected parameter, described N_CCCHs is the quantity of described Common Control Channel CCCH, described N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of part, and N is the number of users that each described assignment blocks is assigned; The access success rate that described corrected parameter and described terminal access described GSM network is relevant; Wherein, if the access success rate that described terminal accesses described GSM network is larger, then described corrected parameter is larger;
Described network equipment sends one and is not less than the time value of described time delay value to described terminal, to make described terminal to be not more than the time delay value channel request CR of described time value.
2. the method for claim 1, is characterized in that, if the whole descending CCCH block of described Common Control Channel CCCH is for assigning unique user, then, in channel FCCH+SCH+BCCH+CCCH or BCCH+CCCH, described time delay value is
in channel FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4, described time delay value is
Wherein, described channel FCCH+SCH+BCCH+CCCH is the channel that frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control and Common Control Channel CCCH are combined into, described BCCH+CCCH is the channel that BCCH channel of broadcast control and Common Control Channel CCCH are combined into, and described FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4 is frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control, Common Control Channel CCCH, 4 Separate Dedicated Control Channel SDCCH and 4 channels that slow associated control channel SACCH is combined into.
3. method as claimed in claim 1 or 2, it is characterized in that, the described quantity of terminal simultaneously initiating access GSM network is the quantity of all terminals in GSM network community, may initiate in GSM network community the number of users of certain rank in the number of users that accesses or GSM network community.
4. method as claimed in claim 1 or 2, it is characterized in that, if the access success rate that described terminal accesses described GSM network is more than or equal to 97%, then described corrected parameter is 6.25.
5. a method for time delay access, it is characterized in that, described method comprises:
Terminal receives the time value that network equipment sends;
Described terminal according to described time value, to be not more than the time delay value channel request CR of described time value;
Described time delay value for described network equipment according to corrected parameter, for assigning the quantity of the assignment blocks of user, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, described time delay value is not more than described time value; Described time delay value is
wherein, described N_Devices is the quantity simultaneously initiating the terminal accessing GSM network, described Pm is described corrected parameter, described N_CCCHs is the quantity of described Common Control Channel CCCH, described N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of part, and N is the number of users that each described assignment blocks is assigned; The access success rate that described corrected parameter and described terminal access described GSM network is relevant; Wherein, if the access success rate that described terminal accesses described GSM network is larger, then described corrected parameter is larger.
6. method as claimed in claim 5, it is characterized in that, if the whole descending CCCH block of described Common Control Channel CCCH is for assigning unique user, then, in channel FCCH+SCH+BCCH+CCCH or BCCH+CCCH, described time delay value is
in channel FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4, described time delay value is
Wherein, described channel FCCH+SCH+BCCH+CCCH is the channel that frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control and Common Control Channel CCCH are combined into, described BCCH+CCCH is the channel that BCCH channel of broadcast control and Common Control Channel CCCH are combined into, and described FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4 is frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control, Common Control Channel CCCH, 4 Separate Dedicated Control Channel SDCCH and 4 channels that slow associated control channel SACCH is combined into.
7. a network equipment, is characterized in that, described network equipment comprises:
Time delay value acquisition module, for according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH, corrected parameter and for assigning the quantity of the assignment blocks of user simultaneously, obtaining terminal and accessing time delay value needed for described GSM network; Described time delay value is
wherein, described N_Devices is the quantity simultaneously initiating the terminal accessing described GSM network, Pm is described corrected parameter, described N_CCCHs is the quantity of described Common Control Channel CCCH, described N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of part, and N is the number of users that each described assignment blocks is assigned; The access success rate that described corrected parameter and described terminal access described GSM network is relevant; Wherein, if the access success rate that described terminal accesses described GSM network is larger, then described corrected parameter is larger;
Sending module, is not less than the time value of described time delay value to described terminal, to make described terminal to be not more than the time delay value channel request CR of described time value for sending one.
8. network equipment as claimed in claim 7, it is characterized in that, if the whole descending CCCH block of described Common Control Channel CCCH is for assigning unique user, then, in channel FCCH+SCH+BCCH+CCCH or BCCH+CCCH, described time delay value is
in channel FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4, described time delay value is
Wherein, described channel FCCH+SCH+BCCH+CCCH is the channel that frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control and Common Control Channel CCCH are combined into, described BCCH+CCCH is the channel that BCCH channel of broadcast control and Common Control Channel CCCH are combined into, and described FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/4 is frequency correction channel FCCH, synchronous channel SCH, BCCH channel of broadcast control, Common Control Channel CCCH, 4 Separate Dedicated Control Channel SDCCH and 4 channels that slow associated control channel SACCH is combined into.
9. network equipment as claimed in claim 7 or 8, it is characterized in that, the described quantity of terminal simultaneously initiating access GSM network is the quantity of all terminals in GSM network community, may initiate in GSM network community the number of users of certain rank in the number of users that accesses or GSM network community.
10. network equipment as claimed in claim 7 or 8, it is characterized in that, if the access success rate that described terminal accesses described GSM network is more than or equal to 97%, then described corrected parameter is 6.25.
11. 1 kinds of terminals, is characterized in that, described terminal comprises:
Receiver module, for receiving the time value that network equipment sends;
Channel request sending module, for according to described time value, to be not more than the time delay value channel request CR of described time value;
Described time delay value for described network equipment according to corrected parameter, for assigning the quantity of the assignment blocks of user, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, described time delay value is not more than described time value; Described time delay value is
wherein, described N_Devices is the quantity simultaneously initiating the terminal accessing GSM network, described Pm is described corrected parameter, described N_CCCHs is the quantity of described Common Control Channel CCCH, described N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of part, and N is the number of users that each described assignment blocks is assigned; The access success rate that described corrected parameter and described terminal access described GSM network is relevant; Wherein, if the access success rate that described terminal accesses described GSM network is larger, then described corrected parameter is larger.
12. 1 kinds of time delay connecting systems, is characterized in that, described system comprises network equipment and terminal:
Described network equipment, for according to initiating to access the quantity of terminal of GSM network, the quantity of Common Control Channel CCCH, corrected parameter and for assigning the quantity of the assignment blocks of user simultaneously, obtain terminal and access time delay value needed for described GSM network, send one and be not less than the time value of described time delay value to described terminal, to make described terminal to be not more than the time delay value channel request CR of described time value;
Described terminal, for receiving the time value that network equipment sends, according to described time value, to be not more than the time delay value channel request CR of described time value;
Described time delay value for described network equipment according to corrected parameter, initiate described terminal that the access quantity of terminal of GSM network and the quantity of Common Control Channel CCCH calculates simultaneously and access time delay value needed for described GSM network, described time delay value is not more than described time value; Described time delay value is
wherein, described N_Devices is the quantity simultaneously initiating the terminal accessing GSM network, described Pm is described corrected parameter, described N_CCCHs is the quantity of described Common Control Channel CCCH, described N_Agchs is for assigning the quantity of the assignment blocks of user in the descending CCCH block of part, and N is the number of users that each described assignment blocks is assigned; The access success rate that described corrected parameter and described terminal access described GSM network is relevant; Wherein, if the access success rate that described terminal accesses described GSM network is larger, then described corrected parameter is larger.
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| CN201010542428.0A CN102469616B (en) | 2010-11-12 | 2010-11-12 | The collocation method that a kind of time delay accesses, time delay cut-in method and relevant device |
| PCT/CN2011/082160 WO2012062222A1 (en) | 2010-11-12 | 2011-11-14 | Configuration method for delayed access, method for delayed access, and related device |
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