CN1383692A - Base statino appts. and channel assignment method - Google Patents
Base statino appts. and channel assignment method Download PDFInfo
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- CN1383692A CN1383692A CN01801665A CN01801665A CN1383692A CN 1383692 A CN1383692 A CN 1383692A CN 01801665 A CN01801665 A CN 01801665A CN 01801665 A CN01801665 A CN 01801665A CN 1383692 A CN1383692 A CN 1383692A
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- Prior art keywords
- channel
- uplink
- station apparatus
- priority
- channel allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
Priority order storage section 113 stores the order of priority for an uplink and the reverse order of priority for a downlink. Channel allocation section 114 performs channel allocation for a downlink in the order of priority of the downlink stored in priority order storage section 113, based on the CIR of the downlink. In addition, channel allocation section 114 performs channel allocation for an uplink in the order of priority of the uplink stored in priority order storage section 113, based on the CIR of the uplink. It is thereby possible to perform reuse partitioning in asymmetrical data communications.
Description
Technical field
The present invention relates in each channel, can to distribute the base station apparatus and the method for channel allocation of some mobile communication system of uplink and downgoing line.
Background technology
As shown in Figure 1, mobile communication system generally is divided into a plurality of sub-districts with whole coverage, and a base station apparatus is set in each sub-district.And each mobile station apparatus carries out radio communication with the base station apparatus that belongs to the sub-district of our station.
Under the situation of Fig. 1, mobile station apparatus 31,32 all belongs to sub-district 11, thus with sub-district 11 in the base station apparatus 21 that is provided with carry out radio communication.Equally, mobile station apparatus 33 belongs to sub-district 12, thus with sub-district 12 in the base station apparatus 22 that is provided with carry out radio communication.
Here, the channel that each mobile station apparatus distributes with base station apparatus sends the signal of uplink, receives the signal of downgoing line.Method for channel allocation as in the mobile communication system of using this honeycomb mode proposed several in the past.
And, as an example of method for channel allocation, " the autonomous dispersion dynamic channel allocation mode (ARP) in the Microcell mobile communication system " (letter is learned skill newspaper, RCS91-32 (1991)) that has the quick benevolence of Jin Jing to discuss.At this ARP (Autonomous Reuse Partitioning; The autonomous subregion of reusing) in the mode, in all sub-districts, comes selective channel, in the sub-district of selecting, use CIR (expectation ripple and disturbing wave power ratio) to become the above channel of defined threshold successively according to same priority.
Below, the channel allocation of existing ARP mode is described with flow chart shown in Figure 2.
At first, when in the step (below, economize slightly ' ST ') 51 call request being arranged, in ST52, base station apparatus is measured the expectation ripple level of uplink, and mobile station apparatus is measured the expectation ripple level of downgoing line.
Then, in ST53, base station apparatus is selected the highest vacant channels of priority according to priority shared in all base station apparatus.So-called vacant channels refers to not use time slot under the situation of TDMA mode, and under the situation of CDMA/TDD mode, is certain time slot of up/the descending identical and blank code resource of the unallocated time slot circuit that maybe will distribute.
Then, in ST54, for the channel of selecting, base station apparatus is measured the disturbing wave level of uplink, and mobile station apparatus is measured the disturbing wave level of downgoing line.
Then, in ST55, the size of the uplink of the channel that base station apparatus is selected and the CIR of downgoing line and pre-set threshold is (so-called channel retrieval) relatively.
Then, all than threshold value under the big situation, in ST56, base station apparatus is given call distribution the channel of selecting at the CIR of uplink and downgoing line.On the other hand, no matter either party of the CIR of uplink and downgoing line is under the situation below the threshold value, and in ST57, base station apparatus is judged and had or not the vacant channels (hereinafter referred to as ' not retrieving channel ') that no longer carries out channel retrieval.
Then, the residue do not retrieve under the situation of channel, in ST58, base station apparatus and mobile station apparatus except the channel that will carry out channel retrieval after, repeat the later processing of ST53.On the other hand, do not having under the remaining situation of not retrieving channel, in ST59, base station apparatus finishes the processing as call drop.
By carrying out the channel allocation of ARP, in each sub-district, can independently realize according to from mobile station apparatus to base station apparatus apart from length, promptly set the so-called repeated use subregion (Halpern: " Reuse Partitioning in Cellular Systems " that number (cell reuse factor) is reused in only sub-district each channel according to the size of propagation path loss, Proc.of VTC ' 83, PP.322-327 (1983)).
Then, by realizing reusing subregion and setting only sub-district repeated use number,, can accommodate more calling as entire system.
Here, existing ARP mode is fixed as identical number with the number of channel of uplink and downgoing line, and the system that is fixed in pairs of up channel and down channel is as prerequisite.Therefore, the circuit that distributes in each channel is up/descending in all sub-districts, be shared.For example, in above-mentioned Fig. 1, mobile station apparatus 33 does not send in the channel that mobile station apparatus 31 receives.Therefore, in mobile station apparatus, the transmission signal that belongs to the mobile station apparatus of other sub-districts does not become interference.
On the contrary, estimate that the amount of information of downgoing line definitely becomes main flow more than the asymmetrical data communication meeting of uplink in the future.In this asymmetric data communication, uplink or downgoing line are distributed to each channel adaptively, that is, need change the number of channel of distributing uplink and the downgoing line from the channel of stated number.
But, the method for channel allocation of existing ARP is applied to asymmetric data communication simply, when carrying out channel allocation according to priority shared in uplink and downgoing line, the up/downgoing line that distributes in each channel causes different states easily because of the sub-district.Under this state, the transmission signal that belongs to the mobile station apparatus of other sub-districts in mobile station apparatus becomes interference, so can not realize reusing subregion.
Summary of the invention
The object of the present invention is to provide a kind of base station apparatus and method for channel allocation, can in asymmetric data communication, realize reusing subregion, and can determine the up-downgoing circuit number of channel adaptively.
The following realization of this purpose:, carry out the channel allocation of uplink and downgoing line separately according to reciprocal priority in uplink shared in all base station apparatus and the downgoing line.
Description of drawings
Fig. 1 represents the structure chart of mobile communication system;
Fig. 2 represents the flow chart of existing channel allocation operation;
Fig. 3 represents the block diagram of schematic construction of the base station apparatus of the embodiment of the invention 1;
Fig. 4 represents that the base station apparatus with the embodiment of the invention 1 carries out the block diagram of schematic construction of the mobile station apparatus of radio communication;
Fig. 5 represents the figure of the frame structure that the asymmetric data of the embodiment of the invention 1 is communicated by letter;
Fig. 6 represents the figure of example of the priority of the uplink of the embodiment of the invention 1 and downgoing line;
Fig. 7 represents the flow chart of channel allocation operation of uplink of the base station apparatus of the embodiment of the invention 1;
Fig. 8 represents the flow chart of channel allocation operation of downgoing line of the base station apparatus of the embodiment of the invention 1;
Fig. 9 represents the figure of example of the priority of the uplink of the embodiment of the invention 2 and downgoing line; And
Figure 10 represents the figure of the frame structure that the asymmetric data of the embodiment of the invention 2 is communicated by letter.
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are described.
(embodiment 1)
Fig. 3 represents the block diagram of schematic construction of the base station apparatus of the embodiment of the invention 1, and Fig. 4 represents that the base station apparatus with Fig. 3 carries out the block diagram of schematic construction of the mobile station apparatus of radio communication.
Base station apparatus shown in Figure 3 and mobile station apparatus shown in Figure 4 are the devices that is applied to the mobile communication system of CDMA/TDD mode.In the CDMA/TDD mode, come regulation wireless communication line channel by time slot and code.
In base station apparatus shown in Figure 3, control signal multiplexing unit 101 is carried out control signals such as pilot signal, channel allocation information and transmission data multiplexing.Channel allocation information is the information that the talk channel of expression this TV station is assigned to which time slot and code.
The output signal of 102 pairs of control signal multiplexing units 101 of coded/modulated portion is implemented the encoding process and the modulation treatment of regulation.The output signal of 103 pairs of coded/modulated portions 102 of spread spectrum portion is implemented spread processing with the spreading code of channel allocation unit 114 indications.
The output signal that sends 104 pairs of spread spectrum portions 103 of RF portion is implemented the wireless processing of regulation in the time slot of channel allocation unit 114 indications.
Shared device 105 sends and receive to switch, and receives so that carry out wireless transmission with the same antenna, and from antenna 106 wireless transmissions, the signal that antenna 106 is received outputs to the RF portion 107 that receives with the output signal that sends RF portion 104.
The output signal that receives 107 pairs of shared devices 105 of RF portion is implemented the wireless processing of regulation in the time slot of channel allocation unit 114 indications.
108 pairs in despreading portion receives the output signal of RF portion 107 and implements the despreading processing with the spreading code of channel allocation unit 114 indications, is separated into expectation ripple and disturbing wave.The output signal of 109 pairs of despreading portions 108 of demodulate/decode portion is implemented demodulation process and decoding processing.
Separated part 110 is separated into the output signal of demodulate/decode portion 109 control signal and receives data, and the information of the disturbing wave received power of the expectation ripple received power of the downgoing line that comprises in the expression control signal and regulation time slot is outputed to CIR calculating part 112.Separated part 110 comprises in control signal under the information state of representing communication request, should ask notice received power determination part 111 and channel allocation unit 114.
Received power determination part 111 is measured the disturbing wave received power of expectation ripple received power and regulation time slot, and measurement result is outputed to CIR calculating part 112.
CIR calculating part 112 calculates the CIR of downgoing line according to expression from the information of the received power of the expectation ripple of separated part 110 output and disturbing wave, and the expectation ripple of measuring according to received power determination part 111 and each received power of disturbing wave are calculated the CIR of uplink.
Priority storage part 113 carries out the priority of the time slot of channel retrieval for each uplink and downgoing line storage.The details that concerns between the priority about the priority of uplink and downgoing line is with aftermentioned.
Channel allocation unit 114 is according to the priority of downgoing line of storage in the priority storage part 113, carries out the channel allocation based on the downgoing line of the CIR of downgoing line.In addition, channel allocation unit 114 is according to the priority of uplink of storage in the priority storage part 113, carries out the channel allocation based on the uplink of the CIR of uplink.
Then, channel allocation unit 114 is controlled spread spectrum portion 103 and is sent RF portion 104 according to the channel allocation result of downgoing line, controls RF portion 107 and the despreading portion 108 of receiving according to the channel allocation result of uplink.In addition, channel allocation unit 114 outputs to control signal multiplexing unit 101 with channel allocation information.The details of operation of relevant channel allocation is with aftermentioned.
On the other hand, in mobile station apparatus shown in Figure 4, control signal multiplexing unit 201 is carried out control signal and transmission data multiplexing.In the multiplexing control signal of control signal multiplexing unit 201, information such as the disturbing wave received power of expectation ripple received power, regulation time slot of expression pilot signal, downgoing line or call request are arranged.
The output signal of 202 pairs of control signal multiplexing units 201 of coded/modulated portion is implemented the encoding process and the modulation treatment of regulation.The output signal of 203 pairs of coded/modulated portions 202 of spread spectrum portion is implemented spread processing with the spreading code of channel control part 212 indications.
The output signal that sends 204 pairs of spread spectrum portions 203 of RF portion is implemented the wireless processing of regulation in the time slot of channel control part 212 indications.
Shared device 205 sends and receive to switch, and receives so that carry out wireless transmission with the same antenna, and from antenna 206 wireless transmissions, the signal that antenna 206 is received outputs to the RF portion 207 that receives with the output signal that sends RF portion 204.
The output signal that receives 207 pairs of shared devices 205 of RF portion is implemented the wireless processing of regulation in the time slot of channel control part 212 indications.
208 pairs in despreading portion receives the output signal of RF portion 207 and implements the despreading processing with the spreading code of channel control part 212 indications, is separated into expectation ripple and disturbing wave.
The output signal of 209 pairs of despreading portions 208 of demodulate/decode portion is implemented demodulation process and decoding processing.Separated part 210 is separated into the output signal of demodulate/decode portion 209 control signal and receives data, and the channel allocation information that comprises in the control signal is outputed to channel control part 212.
Received power determination part 211 is measured the expectation ripple of despreading portion 208 separation and each received power of disturbing wave, and the information of representing measurement result is outputed to control signal multiplexing unit 201.
Below, the relation between the priority of the priority of uplink of present embodiment and downgoing line is described with Fig. 5 and Fig. 6.
Fig. 5 represents the figure of the frame structure that the asymmetric data of present embodiment is communicated by letter.In Fig. 5, radio frames 301 is divided into time slot # 0～#14.Under the situation of asymmetric data communication, in each time slot, need to carry out some distribution of uplink or downgoing line.
Therefore, for uplink and downgoing line, need give the priority of the channel retrieval corresponding with all time slots.Fig. 6 represents the figure of example of the priority of the uplink of present embodiment and downgoing line.
In the present embodiment, as shown in Figure 6, the priority of uplink and the priority of downgoing line are reciprocal relation.That is, the priority of uplink is that the priority of time slot # 0 of timeslot number minimum is the highest, reduces along with timeslot number increases priority.On the other hand, the priority of downgoing line is that the priority of time slot # 14 of timeslot number maximum is the highest, reduces along with timeslot number reduces priority.
Below, the channel allocation operation of above-mentioned base station apparatus shown in Figure 3 is described with Fig. 7 and Fig. 8.
Fig. 7 is the flow chart that the channel allocation of the uplink of expression present embodiment is operated, and Fig. 8 is the flow chart that the channel allocation of the downgoing line of expression present embodiment is operated.In Fig. 7 and Fig. 8, suppose that priority is a priority shown in Figure 6.
In Fig. 7, at first, in ST501, if from mobile station apparatus call request is arranged, in ST502, received power determination part 111 is measured the desired wave received power of uplink so.
In ST503 and ST504, channel allocation unit 114 is selected the highest time slot # 0 of priority according to priority shown in Figure 6 in uplink.
Then, in ST505, for the time slot # 0 of uplink, received power determination part 111 is measured the disturbing wave received power, and CIR calculating part 112 calculates CIR.
Then, in ST506, CIR and the size between the pre-set threshold that channel allocation unit 114 is carried out the time slot # 0 of uplink compare (so-called channel retrieval).
Then, under the CIR of the time slot # 0 of the uplink situation bigger than threshold value, in ST507, channel allocation unit 114 is given time slot # 0 with call distribution.On the other hand, under the CIR of the time slot # 0 of uplink was situation below the threshold value, in ST508, ST509 and ST504, channel allocation unit 114 was selected the high time slot # 1 of priority the 2nd.Below, for time slot # 1, carry out the processing of ST505 and ST506.
Below, repeat ST504～ST509 successively, until the CIR that the retrieves uplink time slot bigger than threshold value.Then, the CIR of uplink is under the situation below the threshold value in all time slots, and in ST510, base station apparatus finishes the processing as call drop.
On the other hand, in Fig. 8, at first in ST601, if call request is arranged, in ST602, separated part 110 obtains the information of the expectation ripple received power of expression downgoing line so.
In ST603 and ST604, channel allocation unit 114 is selected the highest time slot # 14 of downgoing line medium priority according to priority shown in Figure 6.
Then, in ST605, for the time slot # 14 of downgoing line, separated part 110 obtains the information of expression disturbing wave received power, and CIR calculating part 112 calculates CIR.
Then, in ST606, channel allocation unit 114 is CIR and the size between the pre-set threshold (so-called channel retrieval) of the time slot # 14 of downgoing line relatively.
And under the CIR of the time slot # 14 of the downgoing line situation bigger than threshold value, in ST607, channel allocation unit 114 is distributed to time slot # 14 and is called out.On the other hand, under the situation below the threshold value, in ST608, ST609 and ST604, channel allocation unit 114 is selected the high time slot # 13 of priority second at the CIR of the time slot # 14 of downgoing line.Below, carry out the processing of ST605 and ST606 for time slot # 1 3.
Below, before the CIR that the retrieves downgoing line time slot bigger, repeat the processing of ST604～ST609 successively than threshold value.Then, the CIR of downgoing line is under the situation below the threshold value in all time slots, and in ST610, base station apparatus finishes the processing as call drop.
So, the priority by making uplink and the priority of downgoing line are opposite each other, the circuit that distributes in each time slot up/descendingly be difficult to cause because of the different state in sub-district, so in asymmetric data communication, use under the situation of ARP, can realize reusing subregion.
(embodiment 2)
But, because of the mobile grade of mobile station apparatus changes communication quality constantly, so under the situation of carrying out the open loop transmission power control, the time slot of expectation forecast channel and the time slot of uplink are approaching in time.
Therefore, in the present embodiment, the priority of decision uplink is so that the time slot after the forecast channel carries out the channel retrieval of uplink successively.On the other hand, the priority of decision downgoing line, feasible previous time slot before the time slot of forecast channel carries out channel retrieval with uplink reversed in order ground.The base station apparatus of present embodiment is identical with the structure of the Fig. 3 shown in the foregoing description 1 and Fig. 4 with the structure of mobile station apparatus, so omit its explanation.
Fig. 9 is the figure of the priority example of expression uplink of present embodiment and downgoing line.In Fig. 9, suppose that the forecast channel is dispensed among the time slot #7.In this case, the priority of uplink is that the priority of time slot # 8 is the highest, with down to the increase priority step-down of time slot # 14 along with timeslot number, and, from time slot # 0 to time slot # 6, along with timeslot number increases the priority step-down.On the other hand, the priority of downgoing line is that the priority of time slot # 6 is the highest, with down to time slot # 0 along with timeslot number reduces the priority step-down, and from time slot # 14 to time slot # 8, along with timeslot number reduces the priority step-down.
Figure 10 represents the figure of the frame structure that the asymmetric data of present embodiment is communicated by letter, and expression has distributed the state after calling out.In Figure 10, radio frames 701 is distributed the forecast channel to time slot # 7, distributes uplink to time slot # 8～#12, to time slot # 2～#6 allocation of downlink circuit, does not distribute any circuit to other time slots.
When carrying out channel allocation according to the priority of Fig. 9, as shown in figure 10, radio frames 701 is the border with the time slot # 7 that has distributed the forecast channel, distributes by the state that is divided into uplink and downgoing line.
So as benchmark, the priority by making uplink and the priority of downgoing line are opposite each other, except the effect of embodiment 1, it is also conceivable that the open loop transmission power control with the time slot that distributed the forecast channel.
As seen from the above description, according to the present invention, in asymmetric data communication, under the situation of using ARP, can realize reusing subregion, and can consider the open loop transmission power control.
This specification is willing to 2000-188350 (Japan Patent) based on the spy of application on June 22nd, 2000.Its content all is contained in this.
Utilizability on the industry
The present invention is applicable in the Microcell GSM of autonomous dispersion dynamic channel allocation mode and uses Base station apparatus.
Claims (6)
1. base station apparatus comprises: channel dividing arrangement, carry out the channel retrieval of uplink according to predefined priority, and carry out the channel retrieval of downgoing line and carry out channel allocation by the priority opposite with uplink; Receiving-member comes received signal with the channel of the uplink of distributing; And transmit block, send signal with the channel of the downgoing line that distributes.
2. base station apparatus as claimed in claim 1, wherein, subsequently the time slot of the channel allocation parts that use in the mobile communication system of TDD mode behind the time slot that has distributed the forecast channel carries out the channel retrieval of uplink successively, carries out the channel retrieval of downgoing line and carries out channel allocation by the priority opposite with uplink.
3. communication terminal comprises: transmit block, carry out radio communication with the described base station apparatus of claim 1, and the channel of the uplink of distributing with described base station apparatus sends signal; And receiving-member, come received signal with the channel of the downgoing line that distributes.
4. communication terminal, wherein, carry out radio communication with the described base station apparatus of claim 2, mensuration is from the received power of forecast channel with the signal of the power transmission of regulation, from the transmitted power of forecast channel, deduct received power and estimate propagation path loss, send signal with the desired value of the received power in the described base station apparatus and the power of propagation path loss addition gained.
5. a method for channel allocation is used for independently disperseing dynamic channel allocation, wherein, carries out the channel allocation of uplink and downgoing line respectively according to reciprocal priority in uplink and the downgoing line.
6. method for channel allocation as claimed in claim 5, wherein, the forecast channel allocation of from the mobile communication system of TDD mode, using the time slot subsequently behind the time slot carry out the channel retrieval of uplink successively, carry out the channel retrieval of downgoing line and carry out channel allocation by the priority opposite with uplink.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000188350A JP3544641B2 (en) | 2000-06-22 | 2000-06-22 | Base station apparatus and channel allocation method |
| JP188350/00 | 2000-06-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1383692A true CN1383692A (en) | 2002-12-04 |
| CN100441019C CN100441019C (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018016650A Expired - Fee Related CN100441019C (en) | 2000-06-22 | 2001-06-20 | Base statino appts. and channel assignment method |
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| Country | Link |
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| JP (1) | JP3544641B2 (en) |
| CN (1) | CN100441019C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826012B (en) * | 2004-11-24 | 2010-07-07 | 西门子公司 | Method and apparatus for users reshuffling in digital cellular communication systems |
| CN101094444B (en) * | 2006-06-20 | 2014-07-02 | 富士通株式会社 | Communication system |
| US8861487B2 (en) | 2010-03-31 | 2014-10-14 | Qualcomm Incorporated | Facilitating open loop power control in TD-SCDMA multi-carrier systems |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4949105B2 (en) * | 2007-03-29 | 2012-06-06 | 京セラ株式会社 | Slot allocation method and base station apparatus using the same |
| JP2009206538A (en) * | 2008-02-26 | 2009-09-10 | Kyocera Corp | Communication method and base station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3075217B2 (en) * | 1997-06-30 | 2000-08-14 | 日本電気株式会社 | Carrier sense method for mobile communication system |
-
2000
- 2000-06-22 JP JP2000188350A patent/JP3544641B2/en not_active Expired - Fee Related
-
2001
- 2001-06-20 CN CNB018016650A patent/CN100441019C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826012B (en) * | 2004-11-24 | 2010-07-07 | 西门子公司 | Method and apparatus for users reshuffling in digital cellular communication systems |
| CN101094444B (en) * | 2006-06-20 | 2014-07-02 | 富士通株式会社 | Communication system |
| US8861487B2 (en) | 2010-03-31 | 2014-10-14 | Qualcomm Incorporated | Facilitating open loop power control in TD-SCDMA multi-carrier systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100441019C (en) | 2008-12-03 |
| JP2002010334A (en) | 2002-01-11 |
| JP3544641B2 (en) | 2004-07-21 |
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Granted publication date: 20081203 Termination date: 20130620 |