CN101248694A

CN101248694A - Radio communication method capable of reducing inter-cell interference, system, and its mobile station and base station

Info

Publication number: CN101248694A
Application number: CNA2006800310571A
Authority: CN
Inventors: 黑田奈穗子; 李琎硕
Original assignee: NEC Corp
Current assignee: NEC Corp
Priority date: 2005-08-23
Filing date: 2006-08-22
Publication date: 2008-08-20

Abstract

There is provided a radio communication method capable of reducing inter-cell interference. In a radio communication system in which a plurality of base stations performs radio communication with a mobile station by using one of frequency blocks, the base stations transmit a pilot signal in a frequency block and the mobile stations measures a reception quality of the pilot signal of the first base station, measures a reception quality of the pilot signal transmitted by the second base station, generates channel quality information for the frequency block according to the reception quality of the pilot signal of the first base station and the reception quality of the pilot signal of the second base station, and transmits the channel quality information to the first base station.

Description

Can reduce radio communication method, system and travelling carriage thereof and the base station of presence of intercell interference

Technical field

The present invention relates to reduce the radio communication method of the presence of intercell interference in the radio communications system, in described radio communications system, radio communication is carried out by utilizing a frequency chunks in the frequency chunks in the identical frequency band in each base station in a plurality of base stations.

Background technology

3GPP (third generation partner program) is now considering to introduce E-UTRAN (evolved universal terrestrial radio access network, the EvolvedUniversal Terrestrial Radio Access Network) system as the mode of extension of W-CDMA system.Carried out OFDMA (OFDM, Orthogonal Frequency Division Multiple Access) being applied to the research of the downlink air interface in the E-UTRAN system based on implementing.

In existing W-CDMA system, used DS-CDMA (directly expanding code division multiple access, Direct Spreading-Code Division Multiple Access).In DS-CDMA, signal is sent out standing the code diffusion in (code diffusion) time, and at receiver side, desired signal has stood to utilize the counter diffusion of spread code (diffusion code), so that increase the received power density of the required desired signal of each symbol, thereby improve the SIR (signal-to-jamming ratio, Signal-to-Interface Ratio) of receiving terminal.

In addition, in the W-CDMA system, the scrambler (scramblingcode) that is exclusively used in each sub-district multiplies each other with the transmission data.Travelling carriage is known the scrambler of the sub-district that platform connected of oneself, and utilizes the scrambler of each sub-district that is exclusively used in this travelling carriage connection to receive the transmission data.Signal from neighbor cell remains mixed and disorderly, and interference signal is randomized, thereby is utilizing identical frequency band and same spread code also can effectively reduce presence of intercell interference by spreading when neighbor cell sends data even make.Therefore can realize at an easy rate that so-called single sub-district utilizes (one-cellreuse) (in single sub-district utilized again, whole system was used same frequency) again.

On the other hand, in utilizing the system of OFDMA, the frequency band that is used to send data is divided into a plurality of quadrature frequency bands (subcarrier), and each subcarrier is subjected to modulation and multiplexing in data send, thereby realizes jumbo transmission.Therefore, as shown in Figure 1, because the influence of frequency selectivity phasing (frequency selective phasing), the subcarrier that has the subcarrier of the good quality of reception and have a low bad quality appears in each sub carrier group together.Therefore, in OFDMA, it is very important utilizing the combination of error correction and interleaving technology to come the stabilized communication quality.In addition, because the principle of OFDMA is to utilize the interference of the orthogonality elimination of subcarrier from other signal, so, when being used to when the same subcarrier of neighbor cell sends data, between the sub-district, can produce very large interference, thereby reduce communication quality greatly.Therefore, in utilizing the systems such as radio LAN of OFDMA, need to set earlier, so that neighboring access points is not used same channel (frequency chunks that is made of the subcarrier of predetermined quantity).Yet when using these many sub-districts to repeat (multiple-cellrepeat), the operable frequency band in each sub-district becomes and is narrower than the operable whole frequency band of whole system, has reduced the frequency utilization efficient of whole system.

Therefore proposed in the E-UTRAN system, to use as Fig. 2 or system shown in Figure 3 in order to the frequency utilization efficient that increases whole system.

In system shown in Figure 2, central authorities in each sub-district have realized the state that approaching single sub-district utilizes again, and utilized many sub-districts to utilize (multiple-cell reuse) again, thereby limited the utilization (relating to for example non-patent literature 1) of partial-band on the border of each sub-district.That is to say that near the part cell boarder has been utilized frequency chunks (FB) FB in addition that is utilized by neighbor cell.

Similarly, in system shown in Figure 3, the central authorities in each sub-district have utilized whole frequency chunks (FB), and have utilized the FB FB (relating to for example non-patent literature 2) in addition that is utilized by neighbor cell on the border of each sub-district.In Fig. 2 and Fig. 3, combine the result's (as shown in Figure 4) who obtains by subcarrier and be represented as frequency chunks (FB), and supposition can utilize a plurality of FB (for example, FB0 is to FB12) in whole system predetermined quantity.

What considering now is that travelling carriage in the E-UTRAN system measures and will represent that to the reception SIR at the pilot signal of each FB the CQI (cqi, Channel Quality Indicator) of the channel quality of FB sends to each connection base station.Because the CQI measured value comprises the interference that is caused by adjacent base station, thus deterioration the CQI of the FB that utilizes of adjacent base station.Therefore believe by designing a kind of structure that does not send the FB that shows low CQI value and can reduce interference between the adjacent base station to a certain extent.

[non-patent literature 1] 3GPP TSG RAN WGl LTE Ad Hoc meeting, R1-050594Multi-cell Simulation Results for Interference Co-ordination in new OFDM DL (many cell simulations result that the interference among the new OFDM DL is coordinated altogether), Alcatel.

[non-patent literature 2] 3GPP TSG RAN WGl LTE Ad Hoc meeting, R1-050599Multi-cell Interference mitigation-Considerations and Results on FrequencyReuse (thinking and result that the minimizing one of many area interference utilizes about frequency again), Siemens

Summary of the invention

The problem to be solved in the present invention

Yet, the problem below still existing in the said system.

In using [non-patent literature 1] and [non-patent literature 2], during disclosed system, be necessary at the cell boarder place determining that base station configuration and definite FB distribute the design of carrying out complexity.Small area shape generally relies on actual geographic shape and different, even so that in some cases FB is distributed and carry out accurate area test and can not realize effective operation.

In addition, when new base station is added in the system, need start from scratch whole sub-district is designed, this causes increase the man-hour of sub-district design, makes the performance that is difficult to increase new base station and reduce system (owing to the increase of presence of intercell interference has reduced frequency utilization efficient or reduced the throughput of system).

In addition, in the scheduling of notifying based on CQI as shown in Figure 5, because the scheduling processing that CQI notifies the required time and carries out in the base station utilizes to have produced between the actual transmission of the FB with good channel quality data and delays when CQI measures and based on the CQI measurement result.Simultaneously, another adjacent base station has begun the data of new travelling carriage are transmitted probably, therefore has so possibility: because the increase of the interference that other sub-district produces causes when sending (number 5 frame) to begin reduction by the channel quality of the second best in quality FB of CQI notification channel when CQI notifies.Therefore, increase the packet loss rate, and reduced throughput.

Therefore, the purpose of this invention is to provide the radio communication method and the system that can solve following problems:

(1) utilize the FB that also can reduce presence of intercell interference under the situation of same FB as far as possible to distribute at one time even realize neighbor cell.

(2) realize to prevent that neighbor cell from utilizing the FB of same FB to distribute (realization can prevent that neighbor cell from utilizing the scheduling of FB of travelling carriage that has the service (service that for example, has high real-time requirement) of high quality-of-service and high priority especially for reception at one time) at one time.

The means of dealing with problems

In order to address the above problem, according to an aspect of the present invention, a kind of radio communication method is provided, in the method, base station utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and this method feature is to comprise: the step that the base station utilizes frequency chunks to transmit; The step of first quality of reception of travelling carriage measured signal; The step of second quality of reception of travelling carriage measured signal; Travelling carriage is based on the step of the channel quality information of first and second quality of reception generated frequency pieces; And travelling carriage sends to channel quality information the step of base station.

Travelling carriage as first quality of reception, and is measured the received power strength detection of signal as second quality of reception with the signal-to-jamming ratio (SIR) of signal.

Alternatively, the quality of reception of the signal that travelling carriage will send from first base station is measured as first quality of reception, and the quality of reception of the signal that will send from second base station is measured as second quality of reception, and channel quality information is sent to first base station.

According to the present invention, a kind of radio communication method is provided, in the method, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and this method feature is to comprise: first base station is identified for carrying out with first travelling carriage step of the frequency chunks of radio communication; First base station is used for the step of the frequency chunks of radio communication to second base station notice; First base station utilizes determined frequency chunks to send the step of grouping to first travelling carriage.

Utilize said structure can reduce presence of intercell interference.

Effect of the present invention

According to the present invention, can increase the throughput of the travelling carriage that is in adjacent cell boundary vicinity part, thereby make the throughput of whole system increase.Especially, the present invention can reduce the interference from the sub-district adjacent with travelling carriage, and the service of high quality-of-service (QoS) or high priority is provided, thereby realizes desired service quality.

Description of drawings

Fig. 1 is the diagrammatic sketch that the general features of OFDM is shown;

Fig. 2 is the diagrammatic sketch of explanation conventional art;

Fig. 3 is the diagrammatic sketch of explanation conventional art;

Fig. 4 is the diagrammatic sketch that frequency chunks is shown;

Fig. 5 illustrates the diagrammatic sketch that general CQI sends;

Fig. 6 is the diagrammatic sketch that the example of CQI sign (index) is shown;

Fig. 7 is the diagrammatic sketch that is used to illustrate that scheduling is delayed;

Fig. 8 is the diagrammatic sketch that illustrates according to the configuration of the system of all embodiment of the present invention;

Fig. 9 is the diagrammatic sketch of example that the quality of reception measurement result of pilot signal is shown;

Figure 10 is the diagrammatic sketch of example that the method for the FB that selects to be used to send the CQI notice is shown;

Figure 11 is the diagrammatic sketch that the example of interference level conversion table is shown;

Figure 12 is the structure chart of the travelling carriage of first embodiment;

Figure 13 is the flow chart that the operating process of the travelling carriage among first embodiment is shown;

Figure 14 is the structure chart of the base station among first embodiment;

Figure 15 is the flow chart that the operating process of the base station among first embodiment is shown;

Figure 16 is the flow chart that the operating process of the travelling carriage among second embodiment is shown;

Figure 17 is the diagrammatic sketch that is illustrated in the interference level size sequence of the frame that is used for notifying FB;

Figure 18 is the diagrammatic sketch that is used to illustrate the feature of the 3rd embodiment;

Figure 19 is the sequence chart of the 3rd embodiment;

Figure 20 is the structure chart that the travelling carriage among the 3rd embodiment is shown;

Figure 21 is the flow chart that the operating process of the travelling carriage among the 3rd embodiment is shown;

Figure 22 is the structure chart that the base station among the 3rd embodiment is shown;

Figure 23 is the flow chart that the operating process of the base station among the 3rd embodiment is shown;

Figure 24 is the diagrammatic sketch that is used for illustrating the CQI Notification Method of the 4th embodiment;

Figure 25 is the diagrammatic sketch that is used to illustrate the feature of the 5th embodiment;

Figure 26 is the sequence chart of the 5th embodiment;

Figure 27 is the structure chart that the travelling carriage among the 5th embodiment is shown;

Figure 28 is the diagrammatic sketch that is used to illustrate the feature of the 6th embodiment;

Figure 29 is the sequence chart of the 6th embodiment;

Figure 30 is the structure chart of the travelling carriage among the 6th embodiment;

Figure 31 is the structure chart that the base station among the 6th embodiment is shown;

Figure 32 is the flow chart that the operating process of the travelling carriage among the 7th embodiment is shown;

Figure 33 is the flow chart that the operating process of the base station among the 8th embodiment is shown;

Figure 34 is the diagrammatic sketch that the example of the horizontal conversion table of signal power strength is shown.

Label declaration

1001: the Return Reception Dept. branch

1002: the Signal Separation part

1003: decoded portion

1004: the packet error test section

1005: received power is measured part

1006:CQI signal generating portion

1007: the signal composite part

1008: send the processing section

2001: the Return Reception Dept. branch

2002: scheduler

2003: the control signal generating portion

2004: the pilot signal generating portion

2005: buffer

2006: the signal composite part

2007: send the processing section

Embodiment

Now the preferred embodiments of the present invention will be described in conjunction with the accompanying drawings.

Fig. 8 is the diagrammatic sketch that is used to illustrate according to the structure of the system of all embodiment of the present invention.

A plurality of base stations 100 to 103 and a plurality of travelling carriage 110 to 114 are arranged, any one that described a plurality of travelling carriages 110 to 114 are connected in the base station 100 to 103 in the described system of Fig. 8.Each base station is by on the predetermined frequency carrier and stand to carry out multiplexing with the pilot signal of the multiplication of the intrinsic scrambler in base station and send this pilot signal in every frame.The group (as shown in Figure 4) that is made of the frequency carrier of predetermined quantity is known as FB (frequency chunks), and at least one pilot signal is re-used on a FB.Travelling carriage can be irremovable fixed terminal.In addition, a FB can only comprise a frequency carrier.Following function is realized according to the control program in the memory that is stored in them in travelling carriage and base station.

Travelling carriage is to the base station that is connected (SBS: serving BS) send or from SBS receiving uplink/downlink control channel and down-link data channel, and carry out the downlink high speed grouping and send.

Each travelling carriage is measured the average received quality of the pilot signal that comprises among each FB that is sent by SBS, and sends the signal (CQI: cqi) of the channel quality of the FB in the expression uplink control channel.Unless specify in addition in the following embodiments, the generation method of CQI is: the descending according to the average received quality of the pilot signal that comprises in each FB (is for example selected predetermined quantity, 5) FB, and with the numbering of its FB with represent that the sign of this quality of reception is notified to SBS.The quality of reception is based on that the SIR (signal-to-jamming ratio) of each pilot signal calculates.Alternatively, the quality of reception also can wait based on the received power of each pilot signal and calculate.

SBS comes operation dispatching based on the CQI signal of being notified, so that its channel quality is given this specific travelling carriage for the FB of specific travelling carriage the best by priority allocation, and in control channel, send signal about the required data transmission form of reception processing with downlink control signal form, for example, distribute to FB, size of data, the modulator approach of each travelling carriage.After the process scheduled time, SBS utilizes specified data to send form and send data in data channel.

In the superincumbent description, though SBS always selects travelling carriage based on the FB with optimal channel quality, the dispatching method of basis the embodiment here is not limited to this.For example, the scheduler that is known as " equitable proportion " can be used for the equitable degree between the travelling carriage in the increase system, and this scheduler is selected travelling carriage according to the descending of the instantaneous quality of reception relative with the average received quality of each travelling carriage.

In addition, embodiments of the invention are not limited to above-described descending according to the quality of reception and select the FB that its CQI of predetermined quantity will be notified.Yet, alternatively, can notify all FB of expression or by the sign of the quality of reception of the part FB of SBS appointment.

First embodiment

To utilize Fig. 9, Figure 10 and Figure 11 to be described in the generation method of the CQI that uses among first embodiment.

First embodiment is characterised in that its CQI of mobile station in selecting will be notified has the FB of the channel quality that adjacent base station considers.When the difference between the pilot reception quality of the mean receiving power (this mean receiving power is determined by target MS at predetermined period) of the pilot signal that the certain base station from system sends and SBS fell in the predetermined adjacent base station group threshold value, this certain base station was considered to adjacent base station.

Fig. 9 is the diagrammatic sketch that the result who obtains by the SIR that measures the pilot signal that sends from SBS at each FB is shown.In this case, FB9 shows the highest reception SIR.Based on this measurement result, its reception of mobile station in selecting SIR falls into based on the FB (FB7, FB8, FB11, FB12, FB17, FB18, FB19, FB27) in the predetermined threshold (first threshold) of the reception SIR setting of FB9, and arranges selected FB (Figure 10) according to the descending that receives the SIR quality.In addition, travelling carriage is also measured the received power from each pilot signal that sends of adjacent base station in each FB, and utilizes conversion table as shown in figure 11 to convert this measurement result to interference level.In this conversion table, the received power of pilot signal more little (that is, channel quality is poor more), the numerical value of expression interference level becomes more little.For each FB, from all adjacent base stations the summation of interference level be defined as total interference level to this FB.Travelling carriage is selected the FB of predetermined quantity N according to the ascending order of total interference level, and its FB numbering and their CQI are sent to the base station.When existence has a plurality of FB of identical total interference level, pay the utmost attention to the FB of the reception SIR with higher pilot signal from SBS.The quantity of the FB of reception SIR in each has the first threshold of falling into less than predetermined quantity (promptly, N) time, all FB of reception SIR with the first threshold of falling into are notified, and select other FB between first and second threshold values in addition, with according to determine the FB that its CQI will be notified with upper type, till the quantity of FB reaches predetermined value.

Can reduce interference by the CQI that selects FB and send them from adjacent base station.This be because: when adjacent base station utilized same FB to carry out transmission to another travelling carriage at one time, the FB that has the inferior channel quality in this case was selected, thereby makes interference power become less.Therefore, can reduce adjacent interference by selecting and sending the FB that has the little interference between the adjacent base station and have from the good quality of reception of SBS, and can increase near the throughput of the travelling carriage of the part cell boarder, thereby increase the throughput of whole system.

Figure 12 is the diagrammatic sketch that is illustrated in the structure of the travelling carriage that uses among first embodiment.

The travelling carriage that uses in first embodiment comprises that Return Reception Dept. divides 1001, Signal Separation part 1002, decoded portion 1003, packet error test section 1004, received power are measured part 1005, CQI signal generating portion 1006, signal composite part 1007 and sent processing section 1008.

Return Reception Dept. divides 1001 in predetermined regularly received signal and carry out necessary reception and handle, and for example, is added to the removal of at interval elimination of protection in each symbol, FFT conversion, specific scramble codes.Signal Separation part 1002 is separated into pilot signal, control channel signals and data channel signal with composite signal, and pilot signal and other signal are sent to received power mensuration part 1005 and decoded portion 1003 respectively.In addition, Return Reception Dept. divides 1001 also in the predetermined pilot signal that regularly receives from adjacent base station, the removal of at interval elimination of execute protection, FFT conversion, specific scramble codes, and composite signal is sent to received power measure part 1005.

Decoded portion 1003 utilizes the information of control channel that the data of data channel are decoded.Packet error test section 1004 judges whether there is mistake in the data of decoded portion 1003 decodings, and judged result is sent to signal composite part 1007.

Received power is measured the received power that part 1005 is measured each pilot signal of SBS and adjacent base station, and measurement result is sent to CQI signal generating portion 1006.CQI signal generating portion 1006 bases are selected the FB that its CQI will be notified by utilizing Fig. 9 to the step that Figure 11 describes, and FB and their CQI that selects sent to signal composite part 1007.

Signal composite part 1007 sends to the ACK/NACK information of FB and CQI information and grouping together in multiplexed mode and sends processing section 1008.Send 1008 pairs of received signal application coding and the modulation in processing section, and on uplink channel, composite signal is sent to SBS.

Figure 13 illustrates travelling carriage to determine the flow chart of the operating process of the CQI signal that will be sent out according to it.

Travelling carriage is measured the average pilot signal quality of reception (step S101) of peripheral base station, and the pilot reception quality of SBS and the difference between their each average pilot signal quality of reception are fallen into base station sets in the adjacent base station group threshold value as adjacent base station group (step S102).Then, travelling carriage is measured from the pilot signal received power (step S103) of each FB of adjacent base station group transmission, the pilot reception SIR (step S104) of each FB that mensuration sends from SBS, and select each and have the difference that receives between SIR and the highest SIR and fall into FB (step S105) in the first threshold.Quantity when being equal to or greater than predetermined quantity N as selected FB this moment, travelling carriage calculates for each FB the interference level of adjacent base station based on table among Figure 11 and the received power value of being measured, select FB (step S107) according to total interference level ascending order, and notify selected FB and their CQI (step S110) according to sign less than quantity N.At this moment, the sign of CQI is according to calculating from the pilot reception SIR of SBS and the table among Fig. 6.

When the quantity of selected FB during less than predetermined quantity N, for example, when the quantity of selected FB is 3, and predetermined quantity N is 5 o'clock, and travelling carriage is at first notified the CQI of these 3 FB.In addition, in order to select two other FB, each has mobile station in selecting it and receives difference between SIR and the highest SIR and fall into FB (step S108) between first and second threshold values, according to top described its total interference level that calculates, select 2 FB (step S109) according to total interference level ascending order, and notice comprises FB sign and their CQI (step S110) of all 5 FB (comprising preceding 3 FB).

Travelling carriage is carried out aforesaid operations at predetermined CQI announcement period.In addition, when the predetermined adjacent base station group of arrival was upgraded regularly, travelling carriage was measured the average pilot signal of peripheral base station and is upgraded the adjacent base station group according to above-mentioned steps.

Figure 14 is the diagrammatic sketch of structure that the base station of first embodiment is shown.

The base station comprises that Return Reception Dept. divides 2001, scheduler 2002, control signal generating portion 2003, pilot signal generating portion 2004, buffer 2005, signal composite part 2006 and send processing section 2007.

Return Reception Dept. divides 2001 regularly to be received in the control signal that up link sends from travelling carriage predetermined, to the elimination at interval of control signal execute protection etc., and composite signal is sent to scheduler 2002.

The FB that scheduler 2002 determines to distribute to each travelling carriage based on the CQI signal that sends from each travelling carriage and the data volume the buffer 2005, data block size, modulator approach etc., and determined information sent to signal composite part 2006.Simultaneously, scheduler 2002 is notified to buffer 2005 with above-mentioned information, and buffer 2005 will send to signal composite part 2006 with the corresponding data of being notified of data block size.Pilot signal generating portion 2004 generates signal according to predetermined pilot signal patterns, and the signal that is generated is sent to signal composite part 2006.In addition, scheduler 2002 information (comprising FB, travelling carriage etc.) that data communication is required sends to and sends processing section 2007.

Signal composite part 2006 is pilot signals, control signal and the data that send to target MS on each channel that is used to send, and send processing section 2007 so that send to.Send processing section 2007 and carried out necessary processing before sending, for example IFFT, protection are added at interval.

Figure 15 is the flow chart of operating process that the base station of first embodiment is shown.

The base station sends the pilot signal (step S201) with preassigned pattern at predetermined period, the CQI signal (step S202) that reception sends from each travelling carriage that is connected with this base station, and at first will have that the FB of the highest CQI distributes to this travelling carriage (step S203) to travelling carriage.Afterwards, the base station compares the FB data volume that sends and the data volume that will send to each travelling carriage that has been stored in the buffer 2005 of total amount that can be by at first distributing to each travelling carriage, and the result carries out the control (step S204) that FB is distributed according to the data volume that is stored in the buffer based on the comparison.Particularly, the FB that for example at first distributes to the travelling carriage that has been assigned excessive FB is reallocated to this FB it is shown as another travelling carriage of time good CQI.Afterwards, data block size and the modulator approach that will send determined in the base station in the FB that is distributed, and data-signal is sent to each travelling carriage (step S205) with the control signal of notifying determined information.

As mentioned above, according to present embodiment, when sending the CQI of conduct BF of the representative of use when data send to SBS, travelling carriage can be notified the low FB that disturb level of each experience from adjacent base station according to predetermined way.Therefore, when each base station is selected based on the CQI that notified and send the good BF of each travelling carriage,, also can become very little from the interference level of adjacent base station even adjacent base station utilizes the FB identical with another base station at one time.Therefore the interference between the adjacent base station in the whole system be can reduce, thereby near the throughput of the travelling carriage partly of cell boarder and the throughput of whole system increased.

As mentioned above, according to present embodiment,, also can realize to reduce as far as possible the distribution of the frequency chunks of presence of intercell interference even adjacent base station utilizes same frequency chunks to carry out transmission to different mobile stations at one time.

Determine the adjacent base station group though travelling carriage is measured from the average received quality of the pilot signal of peripheral base station, the present invention is not limited to this configuration.For example, travelling carriage can send the measurement result from the average received quality of the pilot signal of peripheral base station.In this case, the adjacent base station group is determined based on received measurement result in the base station.Alternatively, can be exclusively used in each base station and can be used as the system information that advertised information notifies and determine adjacent base station according to predetermined.

Second embodiment

The travelling carriage of second embodiment is identical with first embodiment with the structure of base station, has therefore omitted description of them.Some is different with first embodiment following for second embodiment.

The travelling carriage of first embodiment according to the descending that receives the SIR quality from all FB, select predetermined quantity will be notified FB.On the other hand, shown in the flow chart of Figure 16, travelling carriage among second embodiment receives the FB group (report FB set) (step S301) of the notice of listing the FB that its CQI will be notified earlier from the base station.Travelling carriage is measured the reception SIR (step S305) from the pilot signal of the FB of the BF group that belongs to notice of SBS, with acquisition CQI, and according to interference level and the total interference level (step S304) of the step calculating of describing among first embodiment from adjacent base station.Afterwards, the travelling carriage notice belongs to CQI and the total interference level (step S306) of each FB of notice BF group.

In the base station of second embodiment, scheduler utilizes CQI and total interference level to carry out scheduling to travelling carriage.Though dispatching method is not limited to the ad hoc approach among the present invention, for example, the position of CQI in the flow chart of Figure 15 utilize have with the CQI positive correlation and with the value of total interference level negative correlation (for example, value (being hereinafter referred to as " through the CQI of correction ")) by the inverse of total interference level and CQI are multiplied each other and obtain.As mentioned above, the CQI value is big more, becomes good more from the quality of reception of SBS, and total interference level value is more little, and is more little from the interference power of adjacent base station.Therefore, big more through the CQI value of revising, become good more from the quality of reception of SBS, and more little from the interference level of adjacent base station.The base station operation dispatching is given this specific travelling carriage so that have the FB of the CQI of big process correction for specific travelling carriage by priority allocation.

As mentioned above, according to present embodiment, the base station not only can obtain belonging to the reception SIR of FB of the FB group of notice, and can obtain the information from the interference level of adjacent base station.Therefore, when the scheduler in the base station is selected and send the FB with low interference level from adjacent base station, even adjacent base station utilizes same FB at one time when different mobile stations sends data, it is very little that interference power also can become, therefore and increased near the throughput of the travelling carriage of the part cell boarder, thereby increased the throughput of whole system.

In the present embodiment, though travelling carriage is notified CQI and interference level by some FB of base station appointment, the present invention is not limited to this configuration.For example, travelling carriage can be notified CQI and the total interference level of all FB.Alternatively, travelling carriage can be selected FB and the notice and selected FB corresponding C QI and interference level of predetermined quantity according to the descending of CQI level.

In addition, in the present embodiment, though to base station notice be interference level with the value of numeral, the present invention is not limited to this configuration.For example, as shown in figure 17,, can notify the relative size of total interference level by the order of arranging FB that will be notified according to the ascending order of total interference level to the base station for transmission.

In addition, in the present embodiment, though be that the present invention is not limited to this configuration with the CQI of the form of absolute value notice FB and total interference level.For example, can adopt following structure.That is to say that the base station is in advance to travelling carriage notice predetermined reference FB.Travelling carriage notifies this with reference to the CQI of FB and total interference level, and, for this with reference to the FB beyond the FB, only notice with this with reference to the CQI of FB and the total difference between the interference level.

The 3rd embodiment

Figure 18 illustrates base station among the 3rd embodiment and the relation between the travelling carriage, and Figure 19 illustrates the sequence step between base station and the travelling carriage.As Figure 18 and shown in Figure 19, present embodiment is characterised in that the base station operation dispatching determines the FB that uses in data send, and the FB that determines is notified to adjacent base station and the travelling carriage that is connected as advertised information.

The travelling carriage 211 that is connected to base station 201 is measured the quality of reception of each FB, selects 5 FB according to the descending of CQI level, and utilizes uplink control channel to base station 201 notice CQI.Base station 201 data that decision utilizes FB3 to carry out travelling carriage 211 based on the CQI level send, and notice FB3 is used to the data transmission on notification channel.

Here, the travelling carriage 212 of supposing the notification channel of the regular reception peripheral base station that is connected to the base station 202 adjacent with base station 201 receives expression FB3 is used (reservation) by base station 201 information.When travelling carriage 212 was selected 5 FB that its CQI will be notified based on the quality of reception of the pilot signal of being utilized FB to send by base station 202 according to the descending of the quality of reception, travelling carriage 212 foreclosed the FB3 that is subscribed.Therefore, when FB that base station 202 is selected to be used to send based on the CQI that is notified, the FB3 that is subscribed by adjacent base station (base station 201) is excluded, thereby has avoided the interference between the adjacent base station.Therefore can increase near the throughput of the travelling carriage of the part of cell boarder, thereby increase the throughput of whole system.The FB that is subscribed preferably goes up notified at common signal channel (common signal channel allows travelling carriage to be connected to the adjacent base station of knowing this subscription information).

In the superincumbent description, though base station 201 is only notified as advertised information, can come together to notify information service time about the FB that is subscribed (use zero-time, use concluding time or use duration) FB that quilt is subscribed with the FB that is subscribed.The CQI of the FB that this travelling carriage that prevents to receive this advertised information notice during by the time zone of information notice service time is subscribed.

The FB information of being subscribed need not be notified to whole FB that will be used in the base station.For example, base station 201 can be only for being used to send service (service) or having the FB information of being subscribed by the FB notice of the travelling carriage of the service of the high priority of network settings with high QoS with high real-time requirement.

In addition, similar with base station 201, base station 202 can be notified the FB of the travelling carriage that is used for being connected with this base station as the FB that is subscribed.

Although

base station

201 and 202 is at the predetermined period pilot signal transmitted, the sequence table of Figure 19 only illustrates one-period.

Make from ST2 travelling carriage 211 according to following content and transmit a signal to the timing controlled that base station among the ST8 sends data.

In ST4, base station 201 sends the advertised information of the FB that is subscribed and activates configuration here simultaneously but unshowned timer.After the process scheduled time, the data that base station 201 starts travelling carriage 201 in ST8 send.The scheduled time is to consider CQI notice and required average time of operation dispatching and in predetermined system parameters in base station 202 and travelling carriage 212.

Alternatively, as time-controlled another example, base station 201 comprises the information of the predetermined timing in the universal timepiece (common clock) of representing whole system in ST4.The travelling carriage 212 that in ST4, receives advertised information will the quilt of appointment not be subscribed in ST4 FB be included in the CQI notice that will be sent to base station 202, up to through predetermined regularly till.In ST8, the clock of base station 201 appointment in ST4 regularly locates to send data.

Alternatively, as time-controlled another example, base station 201 comprises the time partially information of (timing offset) of expression among the ST4.Information in receiving ST4, travelling carriage 212 activate configuration here but unshowned timer, and the time partially during travelling carriage 212 will the quilt of appointment not be subscribed in ST4 F1B be included in the CQI notice that will be sent to base station 202.Base station 201 sends advertised information and activates configuration here but unshowned timer in ST4, and when specified partially after, in ST8, send data to travelling carriage 201.In time, can be determined by the base station partially, perhaps can be set to system parameters in advance.

To utilize the block diagram of travelling carriage and base station and the operation that flow chart specifically describes present embodiment below.

Figure 20 illustrates the structure of travelling carriage, and Figure 21 is the flow chart that the operating process when travelling carriage notice CQI is shown.

The same with the situation of travelling carriage among first embodiment, travelling carriage in the present embodiment is in the predetermined average pilot signal (step S401) of regularly measuring peripheral base station, upgrade adjacent base station group (step S402), and receive the advertised information that the base station from the adjacent base station group sends, with the FB information (step S403) that obtains to be subscribed.In addition, travelling carriage is measured from the reception SIR (step S404) of the FB of SBS and is selected the FB of predetermined quantity N according to the descending that receives the SIR quality.At this moment, if the FB that the quilt in the advertised information is subscribed is selected, then travelling carriage is ignored this FB and is selected quality to come this FB that is subscribed next FB (step S405) afterwards.Then, travelling carriage is notified to base station (step S406) with quantity and their CQI of selected FB.Travelling carriage repeats above-mentioned behaviour and notifies CQI.

Figure 22 illustrates the structure of base station, and Figure 23 is the flow chart that the operating process of the data transmission of being carried out by this base station is shown.Scheduler with data send required information (encoding rate, many-valued numbering, FB, regularly) and will be in Common Control Channel (third and fourth embodiment) or the quilt that sends in the independent control channel (the 5th embodiment) the BF information of subscribing send to and send the processing section.

Except step S505, the operation of the base station in the present embodiment is basic identical with first embodiment, in this step S505, just sends the assignment information to FB as advertised information after scheduling.

As mentioned above, according to the 3rd embodiment, operation dispatching is come based on the CQI that is notified in the base station, with the FB that prevents that the adjacent base station utilization from being subscribed, thereby avoids interference between the adjacent base station.Therefore can increase near the user throughput of the travelling carriage of the part of cell boarder, thereby increase the throughput of whole system.

As mentioned above, can realize according to the present invention preventing that adjacent base station from utilizing the frequency chunks of same frequency chunks to distribute at one time.

The 4th embodiment

In above-mentioned the 3rd embodiment, travelling carriage is selected FB according to the descending of the quality of reception and is notified their CQI; And in the 4th embodiment, travelling carriage is notified all FB or in advance by the CQI of the FB of base station appointment group.Therefore, though travelling carriage has been got rid of the FB that is subscribed when selecting the FB that its CQI will be notified, in this embodiment, travelling carriage has sent the NA (unavailable) as the disabled sign of CQI of the FB that represents to be subscribed, as shown in figure 24.

The base station determines that unavailable FB is used by adjacent base station, and need not send data to connected travelling carriage by this unavailable FB.Scheduler has the memory (not shown) that is used to store NA information and this information of management.

The 5th embodiment

Figure 25 illustrates base station among the 5th embodiment and the relation between the travelling carriage, and Figure 26 illustrates the sequence step between base station and the travelling carriage.In the present embodiment, the same with third and fourth embodiment, the base station does not send and is used for the FB as advertised information that data send, but, as Figure 25 and shown in Figure 26, travelling carriage 311 receives and storage will be used for the FB information of data transmission and at uplink control channel this information is notified to base station 312.When receiving this information, adjacent base station 312 is determined that the FB that is notified is scheduled to by base station 301 and is sent data without this FB to connected travelling carriage.Like this, can prevent that adjacent base station from utilizing same FB.Therefore, as the situation of third and fourth embodiment, can increase near the throughput of the travelling carriage of the part of cell boarder, thereby increase the throughput of whole system.

The situation in the 3rd embodiment, three kinds of patterns below present embodiment can use equally.

First kind of pattern is that base station 301 sends FB information in ST4, activates the timer of configuration here, and through after the scheduled time, sends data in ST7.

Second kind of pattern is base station 301 also sends the predetermined timing in the universal timepiece of representing whole system except sending FB information in ST4 and FT5 transmission timing information.The FB that is subscribed is not used in base station 302 in the data of specified transmission timing (ST8) send.The transmission of base station 301 appointment in ST4 regularly (ST7) sends data.

The third pattern is base station 301 breath that believes one side only when also sending except sending FB information in ST4 and ST5.302 moment that receive the FB information among ST5 began not use the FB that is subscribed from the base station in base station 302, up to the time inclined to one side phase finish.Base station 301 sends data (ST7) after the inclined to one side phase when transmission in the ST4 that associates begins.

Figure 27 illustrates the structure of the travelling carriage in the present embodiment.The FB information that the Signal Separation extracting section is subscribed and the FB information that this quilt is subscribed sent to send the processing section is so that the information of the FB that this quilt is subscribed sends to adjacent base station.

Except by the FB information of subscribing, travelling carriage 311 can also be to base station 302 notices about the QoS of the service that receiving or the information of priority.Base station 302 determines whether using the FB that is subscribed according to this QoS or precedence information.

The FB information that travelling carriage 311 is subscribed to the adjacent base station notice can be specified in base station 301.That is to say, only when the QoS of the service that offers travelling carriage 311 or priority are very high, base station 301 just makes the information of the FB that travelling carriage 311 subscribed to adjacent base station notice, in addition, can not make the information of the FB that travelling carriage 311 subscribed to the adjacent base station notice.

Adjacent base station 302 can send the service level information of notifying such as QoS level or precedence information as advertised information.Travelling carriage 311 receives the service level information that can notify, and for this travelling carriage 311, base station 302 is as adjacent base station.Then, when only working as the QoS of the service that is received or priority greater than specified service level, the FB information that travelling carriage 311 just can be subscribed to base station 302 notices.

The present invention can be applied to the base station operation dispatching and carry out in the uplink radio communication system of data transmission according to radio resource to each travelling carriage notice available radio resource (FB, transmitting time etc.) and travelling carriage.That is to say, travelling carriage sends about the base station and allows this travelling carriage to be used for the information of the radio resource that sends to adjacent base station, and the adjacent base station that receives this information does not use the radio resource of being notified to connected travelling carriage, thereby reduces the presence of intercell interference of up link.

In addition, present embodiment can be applied to utilize the radio communications system of the common signal channel in the up link, wherein, in common signal channel, uses common band between the adjacent base station.Owing to used common signal channel, regularly or to the FB operation dispatching that will be used and will send regularly or available FB is notified to each travelling carriage, and travelling carriage is according to the information and executing transmission of being notified to the transmission of travelling carriage in the base station.Simultaneously, before data sent, the transmission that travelling carriage is notified to the adjacent base station notice in uplink control channel was regularly or about the information of available FB.Adjacent base station travelling carriage to its connection in data send does not use the FB that is notified, thereby has reduced the presence of intercell interference in the up link.

The 6th embodiment

Figure 28 illustrates base station among the 6th embodiment and the relation between the travelling carriage, and Figure 29 illustrates the sequence step between base station and the travelling carriage.In the present embodiment, as Figure 28 and shown in Figure 29, the CQI information that travelling carriage 411 will be notified to base station 401 is notified to adjacent base station 402 equally.Utilize such structure, the FB that has travelling carriage 411 good channel quality can be grasped in base station 402, thereby and can estimate the FB that travelling carriage 411 may be distributed in base station 401.Like this, when scheduling to connected travelling carriage was carried out in base station 402, this FB was not used in base station 402, thereby reduced the interference with adjacent base station.

In the scheduling that adjacent base station 402 is carried out, this base station 402 is based on distributing corresponding FB from the CQI of connected travelling carriage notice to notifying the travelling carriage for the best CQI of each FB.Afterwards, based on the memory data output in the buffer of each travelling carriage, the travelling carriage that 402 pairs of this base stations have been assigned excessive FB reduces the quantity of the FB be assigned with.In the minimizing of this FB quantity, the FB in performance good channel quality aspect the CQI that is notified by travelling carriage 411 is reduced in base station 402 with mode of priority.Thereby adjacent base station 402 can increase the probability that the FB that may be used for the transmission of travelling carriage 411 data is not assigned to the travelling carriage that is connected with this base station 411, thereby reduces the interference from the 402 pairs of travelling carriages 411 in base station.

Figure 30 illustrates the structure of the travelling carriage of present embodiment.The CQI signal that in CQI signal generating portion, generates from send the processing section be sent to the base station that connected and adjacent base station the two.At this moment, can be used to send the CQI signal by a channel of these two base stations receptions or the channel that differs from one another to each base station.

Figure 31 illustrates the structure of the base station in the present embodiment.Return Reception Dept. divide to receive from the CQI signal of connected travelling carriage and from the CQI signal of the travelling carriage that is connected with adjacent base station, and these signals are sent to scheduler.

As the situation of the 5th embodiment, the QoS of the service that the base station can receive based on travelling carriage or precedence information determine whether carrying out the CQI notice to adjacent base station.

The 7th embodiment

To utilize Fig. 9, Figure 12 and Figure 32 to be described in the generation method of the CQI that uses among the 7th embodiment.

The 7th embodiment is characterised in that travelling carriage not only considers the SIR (signal-to-jamming ratio) of the signal that sends from the base station that connected but also consider that signal power strength selects the FB that its CQI will be notified.

As described in first embodiment, Fig. 9 is the diagrammatic sketch that illustrates by the result who obtains by the SIR that measures the pilot signal that sends from SBS at each FB.In this case, FB9 shows the highest reception SIR.The same with the situation of first embodiment, its reception of mobile station in selecting SIR falls into based on the FB (FB7, FB8, FB11, FB12, FB17, FB18, FB19, FB27) in the predetermined threshold (first threshold) of the reception SIR setting of FB9, and arranges selected FB according to the descending that receives the SIR quality.In addition, travelling carriage is also measured the signal power strength of each FB, selects the FB of predetermined quantity N according to the descending of signal power strength, and falls the numbering of FB and their CQI sends to the base station.When existence has a plurality of FB of same signal power level, pay the utmost attention to FB with higher reception SIR.The quantity of the FB of reception SIR in each has the first threshold of falling into less than predetermined quantity (promptly, N) time, all FB of reception SIR with the first threshold of falling into are notified, and select other FB between first and second threshold values in addition, with according to determine the FB that its CQI will be notified with upper type, till the quantity of FB reaches predetermined value.

By selecting FB and sending their CQI, can utilize FB to carry out data and send with better channel quality.Reason is as described below.In grouping sent, data sent in burst (burst) mode and occur, so the interference power in the neighbor cell is different according to burst mode.Correspondingly, the SIR that calculates based on interference power is different according to burst mode.Like this, even select to have the FB of good SIR and notify their CQI, in timing place that the data of utilizing the FB that selects based on the CQI notice to carry out send, interference power also can increase suddenly, and this may reduce SIR.Yet, the signal power strength of self sub-district can change with correlation to a certain degree, therefore by selecting to increase the probability that the have higher signal power intensity FB of (for example, good SIR) is stabilized selection to the FB that self sub-district has higher signal power intensity.Thereby, can increase the throughput that is subjected near the travelling carriage of part the cell boarder that the interference power from neighbor cell influences greatly, thereby increase the throughput of whole system.

The travelling carriage that uses among the structure of the travelling carriage that uses among the 7th embodiment and first embodiment shown in Figure 12 is identical.Yet the operation of the travelling carriage among following operation and first embodiment is different.

In the travelling carriage of first embodiment, received power is measured the received power of part mensuration from the pilot signal of SBS and adjacent base station, and sends it to CQI signal generating portion; And in the travelling carriage of the 7th embodiment, received power mensuration part is measured from the received power of the pilot signal of SBS and is sent it to CQI signal generating portion.CQI signal generating portion is selected FB that its CQI will be notified and selected FB and their CQI is sent to the signal composite part according to top step.

Figure 32 illustrates the flow chart of travelling carriage according to the operating process of its definite CQI signal that will be sent out.

Received power in the travelling carriage is measured SIR and the signal power strength (step S701) that part is measured each FB of SBS transmission, and the difference that CQI signal generating portion selects each to have between reception SIR and the highest SIR falls into the interior FB (step S702) of first threshold.When the quantity of at this moment selected FB is equal to or greater than predetermined quantity N, from the FB that among step S702, selects, selects the FB (step S704) of predetermined quantity N according to the descending of signal power strength, and send FB sign and CQI (step S707).At this moment, the sign of CQI is according to calculating from the pilot reception SIR of SBS and the table of Fig. 6.

When the quantity of selected FB less than predetermined quantity N (for example, when the quantity of selected FB be 3 and predetermined quantity be 5) time, travelling carriage is at first notified the CQI of these three FB.In addition, in order to select two other FB, each has mobile station in selecting the difference that receives between SIR and the highest SIR and falls into FB (step S705) between first and second threshold values, from the FB that among step S705, selects, select 2 FB (step S706) according to the descending of signal strength signal intensity then, and notice comprises FB sign and their CQI (step S707) of whole 5 FB (comprising first three FB).

The structure of the base station of the 7th embodiment is identical with first embodiment with operating process, has therefore omitted description of them.

As mentioned above, according to present embodiment, when the CQI that sends to SBS as the BF of the representative of use when data send, the FB that travelling carriage can notify each to have high signal power strength for sub-district separately according to mode of priority.Like this, when each base station is selected based on the CQI that notified and send the good BF of each travelling carriage,, also can utilize FB to send data with higher SIR even a great difference is arranged from the interference power of adjacent base station.Therefore, can increase the throughput that is subjected near the travelling carriage of part the cell boarder that the interference power from neighbor cell influences greatly, thereby increase the throughput of whole system.

The 8th embodiment

The travelling carriage of the 8th embodiment is identical with first embodiment with the structure of base station, has therefore omitted description of them.Some is different with the 7th embodiment following for travelling carriage among the 8th embodiment and base station.

Travelling carriage in the 7th embodiment is selected the notified FB that wants of predetermined quantity according to the descending that receives the SIR quality from all FB, and notice FB sign and CQI.On the other hand, as the flow chart of Figure 33, the travelling carriage among the 8th embodiment receives from the base station lists the FB group (step S801) that its CQI wants the notice of notified FB.Measure in the part in received power, travelling carriage is measured reception SIR and the signal power strength (step S802) that SBS utilizes the pilot signal of the FB transmission in the FB group that belongs to notice, and notifies CQI and the signal power strength level (Figure 34) (step S803) of the FB of the FB group that belongs to notice to the base station.

In the base station of the 8th embodiment, scheduler utilizes CQI and signal power strength to the travelling carriage operation dispatching.For example, in the operating process of base station shown in Figure 15, use in the position of CQI by according to the proportional value that obtains that CQI is weighted of signal power strength.As described in the 7th embodiment, in the big system of interference power variations, CQI (that is, only based on the value of SIR) may change greatly along with the time.Yet, signal power strength with the correlation of time on change relatively slowly.The interference volume increase like this, increases the selecteed probability of the FB with signal power strength, even also can increase the selecteed probability of FB (that is the FB that, has high SIR) with signal power strength by utilizing signal power strength to be weighted.

Dispatching method according to the present invention is not limited to said method, and as long as other any dispatching method has utilized to have and the two the sign of positive correlation of CQI and signal power density, these methods just can be used.

As mentioned above, according to present embodiment, the base station not only can obtain belonging to the reception SIR of FB of the FB group of notice, can also obtain the information about signal power strength.Therefore, when the scheduler in the base station is selected and sent when having the FB of high signal power strength, even the interference volume from adjacent base station changes, also can increase and have the selecteed probability of the FB of the high signal power strength in sub-district (that is the FB that, has good SIR) separately.Therefore, can increase the throughput that interference volume changes near the travelling carriage of the part of cell boarder greatly, thereby increase the throughput of whole system.

In the present embodiment, though travelling carriage notice by the CQI of some FB of base station appointment and signal power strength, the present invention is not limited to this configuration.For example, travelling carriage can be notified CQI and the signal power strength of all FB.Alternatively, travelling carriage can be selected the FB and notice CQI and the signal power strength corresponding with selected FB of predetermined quantity according to the descending of CQI level.

In addition, situation as shown in Figure 17, for transmission, by the order of arranging FB that will be notified according to the descending of signal power strength, can be to the relative size of base station notification signal power level.

In addition, in the present embodiment, though be to notify the CQI of FB and signal power strength with the form of absolute value, the present invention is not limited to this configuration.For example, the base station is earlier to travelling carriage notice predetermined reference FB.Travelling carriage is notified this CQI and signal power strength with reference to FB, and for this with reference to the FB beyond the FB, notice and this is with reference to the CQI of FB and the difference between the signal power strength only.

Claims

1. radio communication method, wherein the base station utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described method feature is to comprise:

The step that described base station utilizes described frequency chunks to transmit;

Described travelling carriage is measured the step of first quality of reception of described signal;

Described travelling carriage is measured the step of second quality of reception of described signal;

Described travelling carriage generates the step of the channel quality information of described frequency chunks based on described first and second qualities of reception; And

Described travelling carriage sends to described channel quality information the step of described base station.

2. radio communication method according to claim 1 is characterised in that

Described travelling carriage is measured the received power intensity of described signal as described first quality of reception, and the signal-to-jamming ratio of measuring described signal is as described second quality of reception.

3. radio communication method according to claim 1 is characterised in that

Described travelling carriage is measured the quality of reception from the signal of first base station as described first quality of reception, mensuration as described second quality of reception, and sends to described first base station with described channel quality information from the quality of reception of the signal of second base station.

4. radio communication method according to claim 1 is characterised in that to comprise that also described travelling carriage determines that based on described first and second qualities of reception its channel quality information wants the step of notified frequency chunks.

5. radio communication method according to claim 1 is characterised in that to comprise that also described travelling carriage will be about the step of notifying as described channel quality information at the information of described first and second qualities of reception of described frequency chunks.

6. radio communication method according to claim 1 is characterised in that to comprise that also described base station is based on the step of described channel quality information execution to the scheduling of described travelling carriage.

7. radio communication method, each base station in wherein a plurality of base stations utilize a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described method feature is to comprise:

First base station is identified for the step with the frequency chunks of the radio communication of first travelling carriage;

Described first base station will be notified to the step of second base station about the information of the frequency chunks that is used for radio communication;

Described first base station utilizes determined frequency chunks to come to send to described first travelling carriage step of grouping.

8. radio communication method according to claim 7 is characterised in that to comprise that also described second base station utilizes frequency chunks beyond the described frequency chunks of described first base station notice to carry out radio communication with travelling carriage.

9. radio communication method according to claim 7 is characterised in that

Described first base station will send as advertised information about the information of the frequency chunks that is used to divide into groups to send.

10. radio communication method according to claim 9 is characterised in that to comprise:

Second travelling carriage receives the step of described information about the frequency chunks that is used to divide into groups to send;

Described second travelling carriage is measured the step that described second base station utilizes the quality of reception of the pilot signal that described frequency chunks sends;

Described second travelling carriage generates the step of channel quality information based on the described quality of reception with about the information of the frequency chunks that is used to divide into groups to send;

Described second travelling carriage is notified to described channel quality information the step of described second base station.

11. radio communication method according to claim 9 is characterised in that

Described first base station is based on the priority or the QoS requirement of the grouping that will be sent to described first travelling carriage, and decision sends described advertised information.

12. radio communication method according to claim 7 is characterised in that

Described first base station is to the information of described first travelling carriage notice about the frequency chunks that is used to divide into groups to send, and

Described first travelling carriage is to the information of described second base station notice about the frequency chunks that is used to divide into groups to send.

13. radio communication method according to claim 12 is characterised in that

Described first travelling carriage to described second base station notice about the priority of the grouping that received or the information of QoS requirement.

14. radio communication method according to claim 12 is characterised in that

Described second base station sends the information about described priority or QoS requirement, and

Described first travelling carriage is based on described information, and the information about the frequency chunks that is used to divide into groups to send is notified in decision.

15. a system, wherein the base station utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described system features is

Described base station comprises and is used to the device that utilizes described frequency chunks to transmit; And

Described travelling carriage comprises:

Be used to measure the device of first quality of reception of described signal;

Be used to measure the device of second quality of reception of described signal;

Be used for generating the device of the channel quality information of described frequency chunks based on described first and second qualities of reception; And

Be used for described channel quality information is sent to the device of described base station.

16. system according to claim 15 is characterised in that

17. system according to claim 15 is characterised in that

Described travelling carriage is measured the quality of reception of the signal that sends from first base station as described first quality of reception, the quality of reception of the signal that mensuration sends from second base station is as described second quality of reception, and described channel quality information is sent to described first base station.

18. system according to claim 15 is characterised in that

Described travelling carriage also comprises the device that is used for determining based on described first and second qualities of reception frequency chunks that its channel quality information will be notified.

19. system according to claim 15 is characterised in that

Described travelling carriage also comprises the device that is used for about notifying as described channel quality information at the information of described first and second qualities of reception of described frequency chunks.

20. system according to claim 15 is characterised in that

Described base station comprises the device that is used for carrying out based on described channel quality information the scheduling of described travelling carriage.

21. a system, each base station in wherein a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described system features is

First base station comprises:

Be used to be identified for carrying out the device of the frequency chunks of radio communication with first travelling carriage;

Be used for to be notified to the device of second base station about the information of the frequency chunks that is used for radio communication; And

Be used to utilize the described frequency chunks of determining by described first base station to send the device of grouping to described first travelling carriage.

22. travelling carriage radio communication method in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described method feature is to comprise the steps:

Measure the quality of reception that first base station utilizes the pilot signal of described frequency chunks transmission;

Measure the quality of reception that second base station utilizes the pilot signal of described frequency chunks transmission;

Based on from the quality of reception of the pilot signal of described first base station with generate the channel quality information of described frequency chunks from the quality of reception of the pilot signal of described second base station; And

Described channel quality information is sent to described first base station.

23. radio communication method according to claim 22 is characterised in that

Its channel quality information is wanted notified frequency chunks to be based on from the quality of reception of the pilot signal of described first base station and is determined from the quality of reception of the pilot signal of described second base station.

24. radio communication method according to claim 22 is characterised in that also to comprise from the quality of reception of the pilot signal in the frequency chunks of described first base station and the step notified as described channel quality information from the information of the quality of reception of the pilot signal in the frequency chunks of described second base station.

25. the travelling carriage radio communication method in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described method feature is to comprise the steps:

Receive the information of the frequency chunks of being subscribed about quilt from first base station;

Based on the described quality of reception with about being generated channel quality information by the information of the frequency chunks of being subscribed; And

Described channel quality information is notified to described second base station.

26. the travelling carriage radio communication method in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described method feature is to comprise the steps:

Receive about being used for sending the information of the frequency chunks of grouping from first base station to travelling carriage self; And

To be notified to second base station about the information of the described frequency chunks that is used to divide into groups to send.

27. the travelling carriage in the system, in described system, base station utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described travelling carriage is characterised in that and comprises:

Be used to measure the device that described base station utilizes first quality of reception of the signal that described frequency chunks sends;

28., be characterised in that according to the described travelling carriage of claim 27

29., be characterised in that according to the described travelling carriage of claim 27

30., be characterised in that also to comprise the device that is used for determining the frequency chunks that its channel quality information will be notified based on described first and second qualities of reception according to the described travelling carriage of claim 27.

31., be characterised in that also to comprise and be used for the device notified as described channel quality information about the information of described first and second qualities of reception of described frequency chunks according to the described travelling carriage of claim 27.

32. the travelling carriage in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described travelling carriage is characterised in that and comprises:

Be used for receiving the device of the information of the frequency chunks of being subscribed about quilt from first base station;

Be used to measure the device that second base station utilizes the quality of reception of the pilot signal that described frequency chunks sends;

Be used for based on the described quality of reception with about generated the device of channel quality information by the information of the frequency chunks of being subscribed; And

With the device that described channel quality information is notified to described second base station.

33. the travelling carriage in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described travelling carriage is characterised in that and comprises:

Be used for receiving about being used for sending the device of the information of the frequency chunks of dividing into groups to described travelling carriage self from first base station; And

Be used for to be notified to the device of second base station about the information of the described frequency chunks that is used to divide into groups to send.

34. the base radio communication means in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described method feature is to comprise the steps:

Be identified for carrying out the frequency chunks of radio communication with first travelling carriage;

To the information of another base station notice about the described frequency chunks that is used for radio communication;

Utilize determined frequency chunks to come to send grouping to described first travelling carriage.

35. base radio communication means according to claim 34 is characterised in that:

The described frequency chunks frequency chunks in addition that the utilization of second base station is notified from described first base station is carried out the radio communication with travelling carriage.

36. the base station in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described base station is characterised in that and comprises:

Be used for being used for the device of the described frequency chunks of radio communication to another base station notice; And

Be used to utilize determined frequency chunks to come to send the device of grouping to described first travelling carriage.

37. base station according to claim 36 is characterised in that

38. the travelling carriage radio communication control program in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described performance of program is to allow the following function of computer realization:

Described channel quality information is sent to described first base station.

39. the travelling carriage radio communication control program in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described performance of program is to allow the following function of computer realization:

Be used for receiving the information of the frequency chunks of being subscribed about quilt from first base station;

40. the travelling carriage radio communication control program in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described performance of program is to allow the following function of computer realization:

41. the travelling carriage radio communication control program in the system, in described system, each base station in a plurality of base stations utilizes a frequency chunks in a plurality of frequency chunks to carry out radio communication with travelling carriage, and described performance of program is to allow the following function of computer realization:

The described frequency chunks that is used for radio communication to another base station notice;

Utilize determined frequency chunks to send grouping to described first travelling carriage.