CN101651888B - Channel assignment method and device - Google Patents

Channel assignment method and device Download PDF

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Publication number
CN101651888B
CN101651888B CN200810118363XA CN200810118363A CN101651888B CN 101651888 B CN101651888 B CN 101651888B CN 200810118363X A CN200810118363X A CN 200810118363XA CN 200810118363 A CN200810118363 A CN 200810118363A CN 101651888 B CN101651888 B CN 101651888B
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maioai
maioaio
allocation index
mobile allocation
maio
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CN101651888A (en
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罗超
邓永锋
林捷
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200810118363XA priority Critical patent/CN101651888B/en
Priority to BRPI0917810A priority patent/BRPI0917810A2/en
Priority to PCT/CN2009/072933 priority patent/WO2010017735A1/en
Priority to RU2011109228/07A priority patent/RU2477581C2/en
Publication of CN101651888A publication Critical patent/CN101651888A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Abstract

The embodiment of the invention discloses a channel assignment method and a channel assignment device. The method comprises the following steps: calculating a mobile allocation index offset aggregate index (MAIOAI) of a mobile terminal; and transmitting an assignment command message carrying the MAIOAI and a mobile allocation index offset aggregate index offset (MAIOAIO) to the mobile terminal so that the mobile terminal acquires the currently used frequency according to the MAIOAI and the MAIOAIO. The method provided by the embodiment simplifies the method for calculating the MAIOAI and saves the storage space of an MS, and can be well compatible with the prior channel assignment flows.

Description

Channel assignment method and device
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of channel assignment method and device.
Background technology
In recent years, along with increasing substantially of the number of users of global system for mobile communications (Global System For Mobile Communication, be called for short GSM), very significantly increasing has also appearred in voice service.This has brought very big pressure to operator.In addition, because the price of voice service is just more and more lower, therefore, how effectively utilizing existing base station and frequency resource more is that more user provides more effective voice service service, has become one of operator's problem demanding prompt solution.
At third generation partner program (3rd Generation Partnership Project; Be called for short 3GPP) GSM EDGE Radio Access Network (GSM/EDGE Radio Access Network; Abbreviation GERAN) in the #33 plenary session; Nokia has proposed a kind of imagination that increases the speech capacity first: orthogonal sub-channels (Orthogonal Sub Channel is called for short OSC), promptly insert two portable terminal (Mobile Station simultaneously on a physical slot by time; Be called for short MS), through the training sequence of quadrature these two MS are distinguished.In theory, this scheme can make available channel quantity double under the situation that does not increase base station number and frequency resource.Afterwards, this concept development became multiuser time slot multiplexing (Multi-User Reusing One Slot is called for short MUROS), promptly on a time slot, inserted a plurality of users simultaneously.
The key improvements of OSC is to have introduced 8 new training sequences, and they are very low with the cross correlation of existing training sequence, so that two subchannel can be distinguished.To uplink and downlink, first subchannel (OSC-0) uses existing training sequence, and second subchannel (OSC-1) is then used new training sequence.
Descending, the modulation system that BTS uses a kind of " type QPSK " (like the sub-set of 8PSK).Two users' modulation bit is mapped to the QPSK symbol; OSC-0 is mapped to a high position, and OSC-1 is mapped to low level, and is as shown in Figure 1; The OSC modulation bit is mapped to the planisphere of 8PSK symbol for prior art; Symbol rotation pi/2 can make the user of OSC-0 carry out demodulation by the mode of Traditional GM SK like this, thus compatible existing MS.The user of OSC-1 then must carry out demodulation by the mode of class QPSK.Up, two MS use traditional G MSK mode to modulate and send separately.
Two users are multiplexed into are called " pairing " on the same time slot, according to the convention that planisphere is described, they are called " I road user " and " Q road user " respectively.When on certain time slot with the MUROS mode multiplexing during more than a user, claim that this time slot is in " MUROS pattern ".In existing MUROS technology, it is generally acknowledged that the I road can insert conventional mobile phone (having realized the mobile phone of DARP Phase I, perhaps more early mobile phone), the mobile phone of having realized the MUROS technology must be inserted in the Q road.
Though MUROS has very high theoretical capacity gain, also has a lot of problems.Such as under non-frequency hopping situation, be assigned between " the I road user " and " Q road user " of two MUROS subchannels of same time slot and always form strong jamming.Under traditional GSM hopping scheme; Because I, Q two-way user use same HSN (Hopping Sequence Number; Be called for short HSN) and mobile allocation index offset (Mobile Allocation Index Offset; Be called for short MAIO), they still always are to use same frequency, still always form strong jamming mutually.That is to say that the OSC user of two pairings does not enjoy the gain that frequency hopping is brought to the full.
For addressing the above problem, prior art has proposed following scheme: be divided into two set to the user in the sub-district, set 1 comprises all users that are not in the MUROS pattern and all I road users, gathers 2 and comprises every other user, be i.e. Q road user.The user of set 1 and set 2 uses same set of move (frequency) to distribute (Mobile Allocation is called for short MA) and same HSN.Set 1 user calculates Mobile Allocation Index (Mobile Allocation Index is called for short MAI) according to traditional approach (3GPP TS 45.002), and gathers the MAIO that 2 user does not re-use fixed allocation, but MAI of every calculating just changes MAIO.This mode is called " jumping MAIO " (MAIO Hopping).
The advantage of jumping MAIO is that it utilizes frequency hopping to upset MUROS user's pair relationhip, and the interference that every user is received has obtained on average, has avoided always forming strongly disturbing defective between two specific MUROS pairing users, and this method is concrete to be realized as follows:
1, the set of definition MAIOA (MAIO Allocation) the MAIO value that allows for set 2 user to use, the element number of establishing this set is N;
2, the subscript value of MAIOA be 0,1 ..., N-1}, predefine M is to the arrangement { σ of this indexed set j, j=0,1 ..., M-1} is stored among the MS.As work as N=3, during M=3, such arrangement can be:
σ 0＝{0，2，1}，σ 1＝{2，1，0}，σ 2＝{1，0，2}
MS must store all common N and pairing all arrangements of M;
Used subscript when 3, definition MAIO HSN (MAIOHSN) is used for selecting above-mentioned certain arrangement digital for MS;
4, when assignment or switching, network sends MAIOA and MAIOHSN (brief note is i) to the MS of set 2, and in each frequency hopping moment, MS calculates the MAIO (i.e. the row of one in the table 1.4) of oneself through following formula:
MAIO FN(i)＝σ FNmod?M(i)
5, (optional) can define the arrangement of many covers to the MAIOA indexed set, every cover M to each N.In the 4th step, network also will send an integer to MS and be used to indicate it to use which cover to arrange except sending MAIOA and MAIOHSN, is designated as MAIOPN.
This produces the method more complicated of MAIO sequence, and target is arranged and all is pre-stored among the MS under its MAIOA of requiring institute might be used, takies a large amount of memory space of MS, shortage flexibility, this method compatible relatively poor to existing protocol in addition; Cause in the processes such as channel assignment or switching, BSC need go to obtain among the MS MAIO sequence that prestores in each frequency hopping constantly, has increased the complexity of processes such as channel assignment or switching.
Summary of the invention
Embodiment of the invention first aspect provides a kind of channel assignment method, and the production method that effectively solves prior art MAIO sequence is complicated, takies defectives such as a large amount of memory spaces of MS.
Embodiment of the invention second aspect provides a kind of channel assignment device, and the production method that effectively solves prior art MAIO sequence is complicated, takies defectives such as a large amount of memory spaces of MS.
A kind of channel assignment method according to the first aspect of the embodiment of the invention provides comprises:
Transmission carries mobile allocation index offset and distributes the Assignment Command message of MAIOA and mobile allocation index offset index of set skew MAIOAIO to give portable terminal; Make said portable terminal calculate the mobile allocation index offset index of set MAIOAI of portable terminal; Obtain the mobile allocation index offset MAIO of the current use of said portable terminal according to said MAIOA and said MAIOAI; Calculate the Mobile Allocation Index MAI of current use according to MAIO and HSN, distribute the frequency that obtains current use the MA from moving according to MAI;
The mobile allocation index offset index of set MAIOAI that said portable terminal calculates portable terminal comprises:
When mobile allocation index offset HSN MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and mobile allocation index offset index of set skew MAIOAIO is the side-play amount that is used to calculate MAIO;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2 NBIN)，T′＝T3mod(2 NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') modN;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the constant array that is used to produce pseudo random sequence; NBIN is for describing the number of the required bit of N; T1R subtracts 64 mould for time parameter T1; The element number of the set of the MAIO value that N allows for set 2 user to use, said set 2 comprises all the Q road users in the sub-district.
A kind of channel assignment device according to the second aspect of the embodiment of the invention provides comprises:
Sending module; Be used to send the Assignment Command message that carries mobile allocation index offset distribution MAIOA and mobile allocation index offset index of set skew MAIOAIO and give portable terminal; Make said portable terminal calculate the mobile allocation index offset index of set MAIOAI of portable terminal according to said MAIOA, MAIOAIO, mobile allocation index offset HSN MAIOHSN and frame number FN; Obtain the mobile allocation index offset MAIO of the current use of said portable terminal according to said MAIOA and said MAIOAI; Calculate the Mobile Allocation Index MAI of current use according to MAIO and HSN, distribute the frequency that obtains current use the MA from moving according to MAI;
The method of the said MAIOAI of said calculating is following:
When mobile allocation index offset HSN MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and mobile allocation index offset index of set skew MAIOAIO is the side-play amount that is used to calculate MAIO;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2 NBIN)，T′＝T3mod(2 NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') modN;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the constant array that is used to produce pseudo random sequence; NBIN is for describing the number of the required bit of N; T1R subtracts 64 mould for time parameter T1; The element number of the set of the MAIO value that N allows for set 2 user to use, said set 2 comprises all the Q road users in the sub-district.
Channel assignment method that the embodiment of the invention provides and device; Through in processes such as channel assignment or switching; In each frequency hopping constantly, the MAIOAI sequence of all real-time calculating MS has been simplified the computational methods of MAIOAI sequence; Avoided the MAIOAI sequence is pre-stored among the MS, and can well compatible existing channel assignment procedure.
Description of drawings
Fig. 1 is mapped to the OSC modulation bit for prior art the planisphere of 8PSK symbol;
Channel assignment method embodiment one flow chart that Fig. 2 provides for the embodiment of the invention;
Channel assignment method embodiment two flow charts that Fig. 3 provides for the embodiment of the invention;
Channel assignment method embodiment three flow charts that Fig. 4 provides for the embodiment of the invention;
The channel assignment device example structure sketch map that Fig. 5 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention is divided into two set to the user in the sub-district, and set 1 comprises all users that are not in the MUROS pattern and all I road users, and set 2 comprises every other user, i.e. Q road user.The user of set 1 and set 2 uses same set of MA and same HSN.
Channel assignment method embodiment one flow chart as shown in Figure 2, as to provide for the embodiment of the invention; Present embodiment is an example with the channel assignment flow process in call setup and the call re-establishment, may further comprise the steps:
The mobile allocation index offset index of set MAIOAI of step 101, calculating portable terminal;
Step 103, transmission carry MAIOAI, and the Assignment Command message of mobile allocation index offset index of set skew MAIOAIO is given portable terminal, makes portable terminal obtain the frequency of current use according to MAIOAI and MAIOAIO.
Channel assignment method that the embodiment of the invention provides and device; Through in processes such as channel assignment or switching, in each frequency hopping constantly, the MAIOAI sequence of all real-time calculating MS; The computational methods of MAIOAI sequence have been simplified; Avoided the MAIOAI sequence is pre-stored among the MS, compatible good, and make channel assignment or switching flow also be simplified.
As shown in Figure 3, be channel assignment method embodiment two flow charts that the embodiment of the invention provides, present embodiment comprises:
Step 201, moving exchanging center MSC (Mobile Switching Center) send assignment request (ASSIGNMENT REQUEST) message to base station controller (Base Station Controller is called for short BSC);
Step 203, BSC receive assignment request message, for MS distributes a TCH channel, activate (CHANNEL ACTIVATION) message to base transceiver station (Base Transceiver Station is called for short BTS) transmitting channel;
Step 205, BTS receive channel and activate message, activate response (CHANNEL ACTIVATION ACK) message to the BSC Return Channel;
Step 207, BSC receive channel and activate response message, activate response message according to this and calculate MAIO allocation index (MAIO Allocation Index is called for short MAIOAI);
Step 209, BSC send to Q road user's MS and carry MAIO distribution (MAIO Allocation; Abbreviation MAIOA), MAIO allocation index skew (MAIO Allocation Index Offset; Be called for short MAIOAIO) and Assignment Command (ASSIGNMENT COMMAND) message of MAIO HSN (MAIO Hopping Sequence Number is called for short MAIOHSN);
Wherein MAIOA is the set of the MAIOAI of BSC calculating;
Step 211, MS are adjusted to transceiver channel on the TCH channel of distribution according to the Assignment Command message that receives, and send SABM frame with path channels FACCH channel to BTS through the TCH channel;
MS just can find out the MAIO of current use from MAIOA according to MAIOAI then; Calculate presently used MAI according to MAIO and HSN; Can from MA, find the ARFCN of the current use of MS according to MAI; Be the frequency of current use, adjust to this frequency then and get on, also just realized transceiver channel is adjusted on the TCH channel of assignment.
Step 213, BTS reply the UA frame to MS;
Step 215, MS send assignment through BSC to MSC and accomplish (Assignment Complete) message;
Step 216, MS send to BSC and set up indication (ESTABLISH INDICATION) message;
In the present embodiment step 209; MAIOHSN is the MAIO HSN; The MAIOHSN of present embodiment can be configured to equal or be not equal to the HSN of sub-district, and when MAIOHSN was configured to equal the HSN of sub-district, BSC only got final product to the MS of set 2 transmission MAIOAIO and MAIOA in the step 209; When MAIOHSN was configured to be not equal to the HSN of sub-district, BSC need get final product to the MS of set 2 transmission MAIOAIO, MAIOA and MAIOHSN in the step 209; Wherein MAIOA is the set of MAIOAI, and MAIOAI is the subscript of MAIO in MAIOA of the current use of MS of set 2, and it calculates as follows:
When MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and MAIOAIO is the side-play amount that is used to calculate MAIO of distributing to Q road, sub-district user;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2∧NBIN)，T′＝T3mod(2∧NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') modN;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the variable that is used to produce pseudo random sequence; T1R subtracts 64 mould for time parameter T1.
Wherein RNTABLE can be the one dimension table of depositing some fixed constant arrays shown in the table 2;
Table 2
Present embodiment has been simplified the computational methods of MAIOAI greatly, and these computational methods are that MS calculates in real time, does not need calculated in advance and stores among the MS; Saved the memory space of MS; And through these computational methods, BSC need not obtain MAIOAI from MS, simplified the channel assignment flow process.
As shown in Figure 4, be channel assignment method embodiment three flow charts that the embodiment of the invention provides, present embodiment is an example with concrete channel switching and the channel assignment flow process in the directed retry, comprising:
Step 301, BSC activate (CHANNEL ACTIVATION) request message to the target BTS transmitting channel;
Step 303, target BTS receive the channel activating request message, activate response (CHANNEL ACTIVATION ACK) message to the BSC transmitting channel;
Step 305, BSC receive channel and activate response message, calculate the MAIOAI of MS;
Step 307, BSC send Assignment Command (HANDOVER COMMAND) message to MS, carry MAIOAI, MAIOAIO and MAIOHSN in this message;
Step 309, MS send to switch on the channel of assignment and insert (HANDOVER ACCESS) pulse to target BTS;
Step 311, target BTS are sent physical message (PHYSICAL INFORMATION) message to MS;
Step 313, target BTS are sent change detection (HANDOVER DETECT) message to BSC;
MS just can find out the MAIO of current use from MAIOA according to MAIOAI; Calculate presently used MAI according to MAIO and HSN; Can from MA, find the ARFCN of the current use of MS according to MAI; Be the frequency of current use, adjust to this frequency then and get on, also just realized transceiver channel is adjusted on the TCH channel of assignment.
In the present embodiment step 305; MAIOHSN is the MAIO HSN; The MAIOHSN of present embodiment can be configured to equal or be not equal to the HSN of sub-district, and when MAIOHSN was configured to equal the HSN of sub-district, BSC only got final product to the MS of set 2 transmission MAIOAIO and MAIOA in the step 305; When MAIOHSN was configured to be not equal to the HSN of sub-district, BSC need send MAIOAIO, MAIOA and MAIOHSN to the MS of set 2 in the step 305; Wherein MAIOA is the set of MAIOAI, and MAIOAI is the subscript of MAIO in MAIOA of the current use of MS of set 2, and it calculates as follows:
When MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and MAIOAIO is the side-play amount that is used to calculate MAIO of distributing to Q road, sub-district user;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2∧NBIN)，T′＝T3mod(2∧NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') mod N;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the variable that is used to produce pseudo random sequence, and its expression mode is with embodiment two; T1R subtracts 64 mould for time parameter T1.
Present embodiment has been simplified the computational methods of MAIOAI greatly, and these computational methods are that MS calculates in real time, does not need calculated in advance and stores among the MS; Saved the memory space of MS; And through these computational methods, BSC need not obtain MAIOAI from MS, simplified the channel switching flow.
Channel assignment device example structure sketch map as shown in Figure 5, as to provide for the embodiment of the invention; Present embodiment comprises: computing module 1 and sending module 2, and wherein computing module 1 is used to calculate the mobile allocation index offset index of set MAIOAI of portable terminal; Sending module 2 is used to send the Assignment Command message that carries MAIOAI and mobile allocation index offset index of set skew MAIOAIO and gives portable terminal, makes portable terminal can obtain the frequency of current use according to this MAIOAI and MAIOAIO.
The computing module 1 of present embodiment calculates MAIOAI according to following method: when mobile allocation index offset HSN MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and mobile allocation index offset index of set skew MAIOAIO is the side-play amount that is used to calculate MAIO;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2∧NBIN)，T′＝T3mod(2∧NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') modN;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the constant array that is used to produce pseudo random sequence; NBIN is for describing the number of the required bit of N; T1R subtracts 64 mould for time parameter T1.
The channel assignment device of present embodiment has been simplified the computational methods of MAIOAI greatly; These computational methods are that MS calculates in real time, do not need calculated in advance and store among the MS, have saved the memory space of MS; And make BSC need from MS, not obtain MAIOAI, simplified the channel switching flow.
What should explain at last is: above embodiment is only in order to technical scheme of the present invention to be described but not limit it; Although the present invention has been carried out detailed explanation with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, also can not make amended technical scheme break away from the spirit and the scope of technical scheme of the present invention and these are revised or be equal to replacement.

Claims (3)

1. a channel assignment method is characterized in that, comprising:
Transmission carries mobile allocation index offset and distributes the Assignment Command message of MAIOA and mobile allocation index offset index of set skew MAIOAIO to give portable terminal; Make said portable terminal calculate the mobile allocation index offset index of set MAIOAI of portable terminal; Obtain the mobile allocation index offset MAIO of the current use of said portable terminal according to said MAIOA and said MAIOAI; Calculate the Mobile Allocation Index MAI of current use according to MAIO and HSN HSN, distribute the frequency that obtains current use the MA from moving according to MAI;
The mobile allocation index offset index of set MAIOAI that said portable terminal calculates portable terminal comprises:
When mobile allocation index offset HSN MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and mobile allocation index offset index of set skew MAIOAIO is the side-play amount that is used to calculate MAIO;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2 NBIN)，T′＝T3mod(2 NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') mod N;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the constant array that is used to produce pseudo random sequence; NBIN is for describing the number of the required bit of N; T1R subtracts 64 mould for time parameter T1; The element number of the set of the MAIO value that N allows for set 2 user to use, said set 2 comprises all the Q road users in the sub-district.
2. channel assignment method according to claim 1 is characterized in that, when said MAIOHSN equals sub-district HSN HSN, carries said MAIOA and MAIOAIO in the said Assignment Command message; When MAIOHSN is not equal to HSN, carry said MAIOA, MAIOAIO and MAIOHSN in the said Assignment Command message.
3. a channel assignment device is characterized in that, comprising:
Sending module; Be used to send the Assignment Command message that carries mobile allocation index offset distribution MAIOA and mobile allocation index offset index of set skew MAIOAIO and give portable terminal; Make said portable terminal calculate the mobile allocation index offset index of set MAIOAI of portable terminal; Obtain the mobile allocation index offset MAIO of the current use of said portable terminal according to said MAIOA and said MAIOAI; Calculate the Mobile Allocation Index MAI of current use according to MAIO and HSN HSN, distribute the frequency that obtains current use the MA from moving according to MAI;
The method of the said MAIOAI of said calculating is following:
When mobile allocation index offset HSN MAIOHSN=0,
MAIOAI=(FN+MAIOAIO) modN; Wherein MAIOAI is an integer, and 0≤MAIOAI≤N-1; FN is a frame number, and mobile allocation index offset index of set skew MAIOAIO is the side-play amount that is used to calculate MAIO;
When MAIOHSN ≠ 0, MAIOAI=(S+MAIOAIO) modN; Wherein parameter S is an integer, and 0≤S≤N-1; Parameter S is calculated as follows:
Parameter M is set, M=T2+RNTABLE ((MAIOHSNxorT1R)+T3); Wherein M is an integer, and 0≤M≤152;
M′＝Mmod(2 NBIN)，T′＝T3mod(2 NBIN)；
When M '＜N, S=M '; When M ' >=N, S=(M '+T ') mod N;
T1 wherein, T2, T3 is time parameter, and 0≤T2≤25; 0≤T3≤50; RNTABLE is the constant array that is used to produce pseudo random sequence; NBIN is for describing the number of the required bit of N; T1R subtracts 64 mould for time parameter T1; The element number of the set of the MAIO value that N allows for set 2 user to use, said set 2 comprises all the Q road users in the sub-district.
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CN200810118363XA CN101651888B (en) 2008-08-14 2008-08-14 Channel assignment method and device
BRPI0917810A BRPI0917810A2 (en) 2008-08-14 2009-07-27 mobile station, method and device for channel assignment
PCT/CN2009/072933 WO2010017735A1 (en) 2008-08-14 2009-07-27 Method, apparatus for allocating channels and mobile terminal
RU2011109228/07A RU2477581C2 (en) 2008-08-14 2009-07-27 Mobile station, channel allocation method and apparatus

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