CN101312598B - Cellular system, base station, mobile station, and communication control method - Google Patents

Abstract

The invention provided cellular system, base station and mobile station and communication control method. The cellular system comprises a mobile station and several base stations which are in a soft handoff state with the mobile station and set up and down special channels with the mobile station. One of the several base stations serves as a grouping transmission base station and transmits a grouping to the mobile station via a sharing channel. The mobile station comprises a device which controls receiving quality of transmission power control signals transmitted from the grouping transmission base station and contained in a down special channel by controlling interference ratio of target signal received by the down special channel; and a device for generating transmission power control signals of the down special channel.

Description

Cellular system, base station and travelling carriage and communication control method

It is 03807558.X that the application is based on application number, and the applying date is on April 3rd, 2003, is entitled as dividing an application that the invention of " cellular system, base station and travelling carriage and communication control method " proposes.

Technical field

The present invention relates to cellular system, base station and travelling carriage and communication control method.

Background technology

In the past, proposed to have various systems for this cellular system.Recently, as one of this cellular system, the cellular system of high speed downlink packet access (HSDPA:High-Speed Downlink Packet Access) mode has been proposed by 3GPP (third generation partnership projects).

Below, for the cellular system that carries out packet communication, be that example describes with the cellular system of above-mentioned HSDPA mode, but the present invention is not limited to HSDPA.

In the HSDPA mode, with high-speed data transfer to from the base station of cellular system to the down link of travelling carriage, and then, for carrying out from the base station having used high speed descending sharing channel (HS-PDSCH:High-Speed Physical Downlink SharedChannel) to the transmission of the down link of travelling carriage.This HS-PDSCH is used for carrying out data from each base station to a plurality of travelling carriages and sends, therefore, definite each in a plurality of travelling carriages of base station and control station thereof carried out the timetable that data send, and sends data by each travelling carriage with the different moment (time division way).

Be that the data to travelling carriage send from described base station in control, each base station and each of a plurality of travelling carriages between set dedicated channel DPCH (DPCH).This DPCH is used to send control information to travelling carriage from the base station by this down link signal, transmits control signal to the base station from travelling carriage by uplink signal simultaneously.

In each travelling carriage, utilize the time scale of HS-PDSCH transmission data little, even but do not sending under the data wait state of data, and also continue to set DPCH between the base station, when request sends data, just can begin the data transmission at short notice.Therefore, each base station is carried out the travelling carriage that data send simultaneously and is had only one at synchronization, and most travelling carriages are in the data wait state, and and the base station between set DPCH.

In addition, in cellular system, have the technology that is called soft handing-over, can make travelling carriage and a plurality of base station set channel simultaneously.Each base station sends common pilot signal with regulation power, the base station sets DPCH of the transmitted power maximum of travelling carriage and common pilot signal, but in soft handing-over, when very little other base stations of the difference of the transmitted power that has common pilot signal, also with other base station sets DPCH, thus with a plurality of base station sets DPCH.In the following description, the base station of setting DPCH like this in soft handing-over is called the connection base station.

In addition, in cellular system, used the technology that is called the fast closed-loop transmission power control.This fast closed-loop transmission power control for DPCH be applicable to its up link and down link the two.In the transmission power control of the up link of DPCH, the base station is used the dedicated pilot signal that is comprised in the upward signal to measure it and is received SIR (signal-to-jamming ratio), and this measured value and predetermined target SIR are made comparisons.Then, when this measured value than target SIR hour, TPC (through-put power control) bit that expression power is increased is included in the downstream signal of DPCH and is notified to travelling carriage; In addition will represent the time that TPC bit that power reduces is included in the downstream signal of DPCH is notified to travelling carriage.Then, travelling carriage receives this TPC bit, and increases and decreases transmitted power according to this TPC bit.

When in soft handing-over the time, utilizing the transmission power control of up link, travelling carriage receives the TPC bit from each station of a plurality of connections base station, when at least one TPC bit represents that power reduces, the transmitted power of DPCH is reduced, in addition the time (promptly, when all TPC bits represent that all power increases), the transmitted power of DPCH is increased.By carrying out this transmission power control, connect in the base station at least one, when the quality of reception of uplink signal satisfies target SIR, connect in the base station at all, the quality of reception that can both prevent uplink signal surpasses target SIR, makes the interference wave power of up link not increase.

On the other hand, in the transmission power control of the down link of DPCH, the dedicated pilot signal that the travelling carriage utilization is included in the downstream signal is measured this reception SIR, and this measured value is compared with predetermined target SIR.Then, when this measured value during less than target SIR, the TPC bit that expression power is increased is included in the upward signal of DPCH and is notified to the base station; In addition will represent the time that TPC bit that power reduces is included in the upward signal of DPCH is notified to the base station.Then, the base station receives this TPC bit, and increases and decreases transmitted power according to this TPC bit.

When in soft handing-over the time, utilizing the transmission power control of down link, travelling carriage receives the down link signal of DPCH and it is synthetic from each station of a plurality of connections base station, the reception SIR of the down link signal after synthetic is compared to determine the TPC bit with target SIR.Then, send common TPC bit to a plurality of connections base station, each station that connects the base station increases and decreases transmitted power according to this TPC bit.So, connect the base station by all and increase and decrease transmitted power according to common TPC bit, can keep connecting the equilibrium of the transmitted power between the base station, the down link signal that makes the connection base station of the transmission loss minimum between travelling carriage be sent can be moved platform and receive with good quality, thereby the transmitted power that can prevent down link signal be increased to required more than, make the interference wave power of down link not increase.

More than Shuo Ming transmission power control and soft handing-over are as wireless access way, particularly in the cellular system of CDMA (code division multiple access) mode, thereby for reducing interference wave power by the reduction transmitted power capacity of trunk being increased, is a kind of otherwise effective technique.

Here, among soft handing-over, as among Figure 10 to shown in system's summary, the above-mentioned travelling carriage (MS) the 3rd that illustrated connects DPCH simultaneously with a plurality of base stations (BS) 1,2 that are connected, but HS-PDSCH only links to each other with a base station (being base station 1 in the drawings).In addition, as mentioned above, travelling carriage 3 need confirm that notice (ACK/NACK: confirm/do not confirm) information sends to the base station with representing to have received the receiving of grouping bag that is sended over by this HS-PDSCH whether zero defect, and this is received and confirms that announcement information is to use the HS-DPCCH (High-Speed Dedicated Physical Control Channel: the HS-PDSCH Dedicated Control Channel that sends control information that comprises grouping) send of up link.

Relation between the HS-DPCCH of this up link and the DPCH of up link as shown in figure 11, DPCH is made of DPCCH (Dedicated Physical Control Channel) and DPDCH (Dedicated Physical Data Channel), and DPCCH comprises dedicated pilot (channel) (Pilot), TPC bit and FBI (feedback information).In addition, DPDCH is data (Data), comprises user profile and control information.This DPCCH and DPDCH are sent out away after mutually orthogonal modulation and the demultiplexing.

HS-DPCCH is divided into the slot length that is equivalent to DPCCH or three times of time slots of DPDCH, and previously described receive that the CQI (channel quality indication) that confirms notice (ACK/NACK) information and expression downlink quality is comprised in.This HS-DPCCH and DPCH are sent out with Code Division Multiplex.In addition, to being contained in ACK (reception)/NACK (denying) signal judgment among this HS-DPCCH, only in the base station that sends HS-PDSCH, promptly the grouping bag sends in the base station and carries out, so the branch that carries out between the base station does not assemble.

On the other hand, as shown in figure 10, the DPCH of up link is in radio network controller (RNC) 10, the branch that connects between the base station 1,2 assembles, simultaneously, this DPCH controls it as predetermined transmission quality by the fast closed-loop transmission power control as mentioned above, and the transmitted power PH of HS-DPCCH is that the power that obtains to add predetermined offset power Δ on the transmitted power PD of this DPCH sends.That is, send with following relation:

PH＝PD+Δ (1)。

So, utilize HS-PDCCH, based on the ACK/NACK that sends from travelling carriage, grouping sends the base station and judges whether correctly to have received the grouping bag at travelling carriage, as be judged as NACK, think that then its corresponding grouping wraps in travelling carriage and correctly do not received, carry out the transmission of this grouping bag once more, to prevent the packet loss that divides into groups.

Here, particularly when the NACK erroneous judgement is decided to be ACK, even the grouping bag is not correctly received, this base station also can send next grouping bag, thereby the grouping bag that is not correctly received just can not sent again, but lost at travelling carriage, thereby the grouping packet loss takes place.Therefore, the reception error rate that must be compared to ACK for the reception error rate of NACK is abundantly little, in other words, needs fully to improve the quality of reception that sends the ack/nack signal of base station at the grouping bag.

But if do not take what countermeasure, because action as described below, the quality of reception of ACK/NACK can reduce.

In service in soft handing-over, (Up-Link: up link) transmitted power of DPCH is controlled by following as the UL of the transmitted power benchmark of HS-DPCCH.When the reception SIR of UL DPCH is bigger than benchmark SIR, connect the base station and send the TPC signal that power is reduced, and the reception SIR after synthetic to be than benchmark SIR hour, its transmission makes the TPC signal of power increase.

In addition, the operating travelling carriage of soft handing-over connects the base station and receives the TPC signal from each, and when all TPC signals all are the power increase, transmitted power is increased, and when having at least a TPC signal to be the power minimizing, transmitted power is reduced.At this moment, though sending the reception SIR of the UL DPCH of base station, the grouping bag do not reach benchmark SIR, if but the reception SIR of the UL DPCH of base station in addition is more than the benchmark SIR, then owing at least one the TPC signal with respect to travelling carriage is that power reduces, so travelling carriage reduces the transmitted power of UL DPCH, and the reception SIR of the UL DPCH of grouping bag transmission base station can further reduce.Therefore, the quality of reception of HS-DPCCH reduces.

So, in soft handing-over,, exist the quality of reception of HS-DPCCH to reduce, thereby be easy to generate the problem of the reception mistake of ACK/NACK because the grouping bag sends base station TPC signal in addition.

In service in soft handing-over, (Down-Link: the transmitted power of DPCH down link), wherein, this TPC signal is the transmitted power that is used to control UL DPCH to control the DL that contains the TPC signal as following.The operating travelling carriage of soft handing-over is synthetic to connect the DLDPCH that the base station sends from each, and the reception SIR after synthetic is when bigger than benchmark SIR, the TPC signal that transmission reduces power, and the reception SIR after synthesizing was than benchmark SIR hour, the TPC signal that transmission increases power, transmitted power is controlled according to this TPC signal in each base station.

At this moment, though the reception SIR of the DL DPCH of grouping bag transmission base station is littler than benchmark SIR, if but the reception SIR of the DL DPCH of base station in addition is big, then because the reception SIR after synthetic is bigger than benchmark SIR, each base station is reduced the transmitted power of DL DPCH, and the reception SIR that the grouping bag sends the DL DPCH of base station further reduces.Therefore, the quality of reception that sends the TPC signal of base station transmission from the grouping bag reduces, so the reception mistake of TPC signal will increase.At this moment, because the grouping bag sends the base station reception SIR of UL DPCH is increased, so even travelling carriage sends the TPC signal that transmitted power is increased, also can be owing to the mistake of this TPC signal, and exist the reception SIR of UL DPCH to reduce, correspondingly the quality of reception of HS-DPCCH reduces, and is easy to generate the problem of the reception mistake of ACK/NACK.

Particularly, in each base station, owing to produce the reception mistake of TPC signal, the transmitted power of DL DPCH that the grouping bag sends the base station is littler than the transmitted power of the DL DPCH of other base stations, thereby the problems referred to above become and are easy to generate.

Be used to improve that the mode in the past of above problem is known that following two kinds of methods are arranged.

First method is, the offset power Δ value that travelling carriage makes HS-DPCCH when soft hand-off state than increase is arranged when the non-soft hand-off state.In the method, since suitable Δ according to the number that connects the base station, send the UL quality of reception etc. of link of grouping bag and different, so there is the incremental raio problem of difficulty of determining optimum Δ.In addition,, just need make the Δ value enough big, thereby there is the consumed power that increases travelling carriage in the transmitted power of up link greatly more than required, also increases the shortcoming of the interference wave power of up link simultaneously for the reception error rate that makes ACK/NACK is enough little.

In addition, because the transmitted power of HS-DPCCH is bigger than DPCCH, thus exist the quality of reception of the pilot signal of DPCCH to reduce, and channel is inferred the shortcoming that precision reduces.For eliminating above-mentioned shortcoming, also considered to apply pilot signal, but, had the problem of the service efficiency that reduces resource because normal transmission only is used in the pilot signal in the soft handing-over to HS-DPCCH.

Second method is that in the soft handing-over (SHO), the grouping bag sends the signal TPC-HS that the base station is used with respect to the quality of reception generation fast closed-loop control type transmission power control of HS-DPCCH, to replace common TPC signal, perhaps the two is all sent to travelling carriage.In the method, satisfy ack signal, NACK signal quality, must make to require quality target setting SIR more strictly for sending in the base station at the grouping bag.Therefore, has the shortcoming that consumes excessive transmission signal.In addition, when sending TPC-HS when replacing common TPC, the power of HS-DPCCH rises and produces interference, consequently, exists the channel of the DPCCH of other channels to infer the shortcoming that precision reduces.In addition, when sending the TPC-HS different, need to change time slot format with common TPC.

The purpose of this invention is to provide a kind of cellular system, this system can solve above-mentioned existing issue, and can be in the base station with high-quality receive send to the base station from travelling carriage, be used to divide into groups to wrap and receive the ack/nack signal of confirming notice.

Summary of the invention

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described cellular system is characterised in that, described travelling carriage has transmission control device, described device only carries out the transmission power control of special uplink channel according to the transmission power control information in the downlink dedicated channels of being contained in that sends the base station from described grouping bag in described grouping bag receiving course.In addition, the feature of described cellular system also is, the grouping bag sends the base station to have and be used at described grouping bag process of transmitting, controls the target quality of reception of described dedicated channel in this base station and changes into device than its second big value from first value; The feature of described cellular system is that also described transmission control device is set at the amplification of the transmitted power of described special uplink channel bigger than the range of decrease.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described cellular system is characterised in that, grouping bag sends the base station to have and is used at described grouping bag process of transmitting, and the transmitted power that controlling packet is contained in the transmission power control information in the downlink dedicated channels is changed into device than its second big value from first value.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, utilize reference power to be between the base station of described soft hand-off state, the balance of the transmitted power of described dedicated channel, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described cellular system is characterised in that, grouping bag sends the base station to have and is used for controlling described reference power value is changed into the second bigger value from first value device at described grouping bag process of transmitting.In addition, the feature of described cellular system also is, described grouping bag sends the base station to have and be used for when increasing described reference power value, and the transmitted power of control downlink dedicated channels is changed into bigger device.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described cellular system is characterised in that, described travelling carriage has and is used at described grouping bag receiving course, controls the target quality of reception of described dedicated channel in this travelling carriage and changes into device than its second big value from first value.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, it is characterized in that, described travelling carriage has and is used at described grouping bag receiving course, only generates the device of the described power control information of downlink dedicated channels according to the quality of reception of described dedicated channel in this travelling carriage that sends the base station from the grouping bag.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, send the base station to the bag that divides into groups and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving the affirmation announcement information that contains described grouping bag, described cellular system is characterised in that, described travelling carriage has offset power and determines device, and this device is determined the increment of described offset power according to the quality of reception of the down link of each base station in the described soft handshaking.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, send the base station to the bag that divides into groups and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving the affirmation announcement information that contains described grouping bag, described cellular system is characterised in that, described travelling carriage has offset power and determines device, and this device is determined the increment of described offset power according to the number N of each base station in the described soft handshaking.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, wrap the transmission base station to grouping and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving affirmation notice (ACK/NACK) information that contains described grouping bag, described cellular system is characterised in that, the grouping bag sends the base station and has grouping bag transmission control device, and this device carries out the transmission control of described grouping bag according to the described confidence level of the judged result of confirming notice of receiving.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described communication control method is characterised in that, has the transmission power control step in the described travelling carriage, this step is in described grouping bag receiving course, only carries out the transmission power control of special uplink channel according to the transmission power control information in the downlink dedicated channels of being contained in that sends the base station from described grouping bag.In addition, the feature of described communication control method also is, sends in the base station at the grouping bag to have in described grouping bag process of transmitting, controls the target quality of reception of described dedicated channel in this base station and changes into step than its second big value from first value; The feature of described communication control method is that also described transmission power control step is set at the amplification of the transmitted power of described special uplink channel bigger than the range of decrease.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described communication control method is characterised in that, send in the base station at grouping bag and to have in described grouping bag process of transmitting, the transmitted power that controlling packet is contained in the transmission power control information in the downlink dedicated channels is changed into step than its second big value from first value.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, utilize reference power to be in the balance of the transmitted power of the described dedicated channel between the base station of described soft hand-off state, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, it is characterized in that, in grouping bag transmission base station, have in described grouping bag process of transmitting, control described reference power value is changed into the second bigger value from first value step.In addition, the feature of described communication control method also is to have in the described reference power value of increase in described grouping bag transmission base station, and the transmitted power of control downlink dedicated channels is changed into bigger step.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, it is characterized in that, in described travelling carriage, have in described grouping bag receiving course, control the target quality of reception of described dedicated channel in this travelling carriage and change into step than its second big value from first value.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, it is characterized in that, in described travelling carriage, have in described grouping bag receiving course, only generate the step of the described power control information of downlink dedicated channels according to the quality of reception of described dedicated channel in this travelling carriage that sends the base station from the grouping bag.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, send the base station to the bag that divides into groups and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving the affirmation announcement information that contains described grouping bag, described communication control method is characterised in that, have the offset power determining step in described travelling carriage, this step is to determine the increment of described offset power according to the quality of reception of the down link of each base station in the described soft handshaking.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, send the base station to the bag that divides into groups and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving the affirmation announcement information that contains described grouping bag, it is characterized in that, have the offset power determining step in described travelling carriage, this step is to determine the increment of described offset power according to the number N of each base station in the described soft handshaking.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, wrap the transmission base station to grouping and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving affirmation notice (ACK/NACK) information that contains described grouping bag, described communication control method is characterised in that, send at grouping bag and to have the grouping bag in the base station and send controlled step, this step is to carry out the transmission control of described grouping bag according to the described confidence level of the result of determination of confirming notice of receiving.

According to the present invention, can obtain a kind of base station, this base station is that the grouping bag in the following cellular system sends the base station, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described base station is characterised in that, have and be used for, control the target quality of reception of described dedicated channel in this base station and change into device than its second big value from first value at described grouping bag process of transmitting.

According to the present invention, can obtain a kind of base station, this base station is that the grouping bag in the following cellular system sends the base station, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described base station is characterised in that, have and be used for, the transmitted power that is contained in the transmission power control information in the downlink dedicated channels is changed into device than its second big value from first value at described grouping bag process of transmitting.

According to the present invention, can obtain a kind of base station, this base station is that the grouping bag in the following cellular system sends the base station, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, utilize reference power to be between the base station of described soft hand-off state, the balance of the transmitted power of described dedicated channel, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described base station is characterised in that, have and be used for controlling described reference power value is changed into the second bigger value from first value device at described grouping bag process of transmitting.In addition, the feature of described base station also is, described grouping bag send the base station also have be used for increasing described reference power value in, the transmission power value of control downlink dedicated channels is changed into the device of the second bigger value from first value.

According to the present invention, can obtain a kind of base station, this base station is that the grouping bag in the following cellular system sends the base station, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, wrap the transmission base station to grouping and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving affirmation notice (ACK/NACK) information that contains described grouping bag, described base station is characterised in that, have grouping bag transmission control device, this device carries out the transmission control of described grouping bag according to the described confidence level of the result of determination of confirming notice of receiving.

According to the present invention, can obtain a kind of travelling carriage, this travelling carriage is the travelling carriage in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described travelling carriage is characterised in that, has transmission control device, this device only carries out the transmission power control of special uplink channel according to the transmission power control information in the downlink dedicated channels of being contained in that sends the base station from described grouping bag in described grouping bag receiving course.In addition, the feature of described travelling carriage is that also described transmission control device is set at the amplification of the transmitted power of described special uplink channel bigger than the range of decrease.

According to the present invention, can obtain a kind of travelling carriage, this travelling carriage is the travelling carriage in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described travelling carriage is characterised in that, have and be used for, control the target quality of reception of described dedicated channel in this travelling carriage and change into device than its second big value from first value at described grouping bag receiving course.

According to the present invention, can obtain a kind of travelling carriage, this travelling carriage is the travelling carriage in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on other dedicated channels in these dedicated channels mutually, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel and divide into groups to wrap transmission, described travelling carriage is characterised in that, have and be used for, only generate the device of the described power control information of downlink dedicated channels according to the quality of reception of described dedicated channel in this travelling carriage that sends the base station from the grouping bag at described grouping bag receiving course.

According to the present invention, can obtain a kind of travelling carriage, this travelling carriage is the travelling carriage in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with this travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, send the base station to the bag that divides into groups and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving the affirmation announcement information that contains described grouping bag, described travelling carriage is characterised in that, have offset power and determine device, this device is determined the increment of described offset power according to the quality of reception of the down link of each base station in the described soft handshaking.

According to the present invention, can obtain a kind of travelling carriage, this travelling carriage is the travelling carriage in the following cellular system, described cellular system comprises travelling carriage, and be in soft hand-off state and set a plurality of base stations of dedicated channel with described travelling carriage with described travelling carriage, in being in the base station of soft hand-off state, have only certain base station and described travelling carriage to set shared channel (HS-PDSCH) and divide into groups to wrap transmission, described travelling carriage is with the transmitted power of gained after adding predetermined migration power on the transmitted power of special uplink channel, send the base station to the bag that divides into groups and send the HS-PDSCH Dedicated Control Channel (HS-DPCCH) of receiving the affirmation announcement information that contains described grouping bag, it is characterized in that of described travelling carriage, have offset power and determine device in described travelling carriage, this device is determined the increment of described offset power according to the number N of each base station in the described soft handshaking.

According to the present invention, can obtain a kind of cellular system, this cellular system comprises travelling carriage, and set the base station of dedicated channel with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on dedicated channel in the downlink dedicated channels, special uplink channel is made of Dedicated Control Channel (DPCCH) and specific information channel (DPDCH), described base station and described travelling carriage are set shared channel (HS-PDSCH) and are divided into groups to wrap transmission, described travelling carriage is to add the transmitted power of the first predetermined deviant gained on the transmitted power of up Dedicated Control Channel, send the base station to the grouping bag and send the specific information channel, described cellular system is characterised in that, described travelling carriage has the transmitted power restraining device, this device is according to the transmitted power of described transmission power control information Control DPCCH, when the transmitted power that adds the first predetermined deviant gained on the transmitted power at DPCCH sends DPDCH, transmitted power at the signal that contains DPCCH and DPDCH surpasses under the situation of predetermined maximum transmit power, suppresses the transmitted power of DPDCH.

According to the present invention, can obtain a kind of communication control method, this method is the communication control method in the following cellular system, described cellular system comprises travelling carriage, and set the base station of dedicated channel with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on dedicated channel in the downlink dedicated channels, special uplink channel is made of Dedicated Control Channel (DPCCH) and specific information channel (DPDCH), described base station and described travelling carriage are set shared channel (HS-PDSCH) and are divided into groups to wrap transmission, described travelling carriage is to add the transmitted power of the first predetermined deviant gained on the transmitted power of up Dedicated Control Channel, send the base station to the grouping bag and send the specific information channel, described communication control method is characterised in that, in described travelling carriage, has step according to the transmitted power of described transmission power control information Control DPCCH, with send DPDCH with the transmitted power that on the transmitted power of DPCCH, adds the first predetermined deviant gained, when the transmitted power of the signal that contains DPCCH and DPDCH surpasses predetermined maximum transmit power, suppress the step of the transmitted power of DPDCH.

According to the present invention, can obtain a kind of travelling carriage, this travelling carriage is the travelling carriage in the following cellular system, described cellular system comprises travelling carriage, and set the base station of dedicated channel with described travelling carriage, described dedicated channel has up and downlink dedicated channels, contain the transmission power control information that is useful on dedicated channel in the downlink dedicated channels, special uplink channel is made of Dedicated Control Channel (DPCCH) and specific information channel (DPDCH), described base station and described travelling carriage are set shared channel (HS-PDSCH) and are divided into groups to wrap transmission, described travelling carriage is to add the transmitted power of the first predetermined deviant gained on the transmitted power of up Dedicated Control Channel, send the base station to the grouping bag and send the specific information channel, described travelling carriage is characterised in that, has the transmitted power restraining device, this device is according to the transmitted power of described transmission power control information Control DPCCH, send DPDCH with the transmitted power that on the transmitted power of DPCCH, adds the first predetermined deviant gained, when the transmitted power of the signal that contains DPCCH and DPDCH surpasses predetermined maximum transmit power, suppress the transmitted power of DPDCH.

Description of drawings

Fig. 1 is the schematic diagram that adopts the cellular system of embodiments of the invention;

Fig. 2 is the precedence diagram of the action of the expression first embodiment of the present invention;

Fig. 3 is the block diagram of the base station in the embodiments of the invention;

Fig. 4 is the block diagram of the travelling carriage in the embodiments of the invention;

Fig. 5 is the precedence diagram of the action of the expression second embodiment of the present invention;

Fig. 6 is the flow chart of the action of the travelling carriage in the expression third embodiment of the present invention;

Fig. 7 is the flow chart of the action of the base station among expression the 3rd, the 4th embodiment of the present invention;

Fig. 8 is the flow chart of the action of the travelling carriage in the expression fourth embodiment of the present invention;

Fig. 9 is the flow chart of the action of the travelling carriage in the expression fifth embodiment of the present invention;

Figure 10 is the schematic diagram that is used for illustrating the general action of cellular system;

Figure 11 is used for illustrating the format chart that concerns between the UL DPCH of HSDPA mode and the HS-DPCCH.

Embodiment

With reference to the accompanying drawings, first to the 5th embodiment of the present invention is described.Fig. 1 is the general schematic view of an example of the cellular system that is suitable for of first to the 5th embodiment of the present invention.With reference to this figure, cellular system comprises base station 1, base station 2, travelling carriage 3,4,5.And, with base station 1 with in base station 2 is arranged on different sub-districts.In addition, in this example, though be to existing the situation of two base stations 1,2 to be illustrated with respect to three travelling carriages 3,4,5, be not limited thereto, equally also being applicable to the situation that has three above base stations with respect to three travelling carriages 3,4,5.In general, there are a plurality of travelling carriages with respect to a base station.

In addition, the present invention also is applicable to the situation that has four above travelling carriages in this transmitting system, and this figure will exist the situation of three travelling carriages 3,4,5 to illustrate as an example.

In addition, as the wireless access way between base station and the travelling carriage 3,4,5, can adopt CDMA (code division multiple access) mode.

The figure shows from the base station 1 and send HS-PDSCH signals, DPCH 1 (DL:Down-Link: from the base station to the transmission of travelling carriage) signal and CPICH 1 (common pilot signal 1) signal to travelling carriage 3; Send DPCH 1 (UL:Up-Link :) signal from travelling carriage 3 to base station 1 from the transmission of travelling carriage to the base station.In addition, also show HS-DPCCH (UL) signal that sends as shown in figure 11 to base station 1 from travelling carriage 3.

Equally, show from the base station 2 and send DPCH 2 (DL) signal and CPICH2 signals to travelling carriage 3; Send DPCH 2 (UL) signal from travelling carriage 3 to base station 2.This DPCH 2 (UL) as the transmission signal of travelling carriage, is identical with DPCH 1 (UL) though the base station that receives with DPCH 1 (UL) is different.That is, show the HS-DPSCH signal and the CPICH signal is an one way signal, the DPCH signal is a two-way signaling.

HS-PDSCH is an IA High Speed Channel, is used for mass files such as short time transmitting-receiving animations.In addition, CPICH is Common Pilot Channel (just DL), by this channel from the base station 1,2 to travelling carriage 3 full-time transmission common pilot signals.

In addition, DPCH is special-purpose (physics) channel (UL and DL), and as shown in figure 11, it is made of DPCCH and DPDCH.In addition, as mentioned above, comprise the CQI of the ack/nack signal and the transmission route quality of expression down link etc. in HS-DPCCH, the relation of the transmitted power between this DPCCH and the HS-DPCCH is shown in previous formula (1).

Then, all common actions describe to first to the 5th embodiment.Each base station 1,2 sends CPICH 1,2 respectively, and this CPICH presses each sub-district by different scramble sign extended, thereby each travelling carriage carries out the identification of sub-district by the difference of scramble symbol.Each travelling carriage is set one or more base stations and DPCH (UL/DL) when downlink data receiving, become the data wait state.

When the difference of the received power of CPICH between the base station 1,2 is predetermined value when following, a travelling carriage 3 is not only set DPCH with base station 1 but also with base station 2, becomes the state (soft handing-over) of setting DPCH with a plurality of base stations 1,2.

In the DPCH of UL and DL, contain the dedicated pilot signal of forming by the bit series of regulation (Pilot).The DPCH transmitted power of UL is controlled by the fast closed-loop transmission power control, and in this control, the base station utilizes the dedicated pilot signal of the DPCH of UL to measure the reception SIR of DPCH, and the target SIR that this measured value and this base station have is compared.Then, when this measured value than target SIR hour, utilize DPCH 1,2 the TPC bits of DL to be notified to travelling carriage 3 with " power increase ", the TPC bit with " power reduction " in the time of in addition is notified to travelling carriage 3.In addition, the value of this target SIR is to send from radio network controller RNC (10 Figure 10).

Each base station sends HS-PDSCH, and this HS-PDSCH is than DPCH channel at a high speed, sends with the power bigger than the DPCH of DL.Each base station uses a HS-PDSCH to send data to a plurality of travelling carriages.RNC or base station are determined to carry out the timetable that data send to each travelling carriage, send thereby each travelling carriage is carried out data with different timetables.That is, give an example, at first carry out the transmission of HS-PDSCH, after this sends end, carry out the transmission of HS-PDSCH, after this sends end, carry out the transmission of HS-PDSCH to travelling carriage 5 to travelling carriage 4 to travelling carriage 3.

After the data that travelling carriage 3 sends arrived RNC, RNC sent these data to the base station 1 or 2 that travelling carriage 3 is set DPCH from communication network.Here, data are admitted to base station 1.

Be all common actions of first to the 5th embodiment above, utilize the precedence diagram of Fig. 2 that first embodiment is explained orally below.When should be from communication network after the data that travelling carriage (MS) 3 sends arrive RNC, RNC sends these data to the base station (BS) that travelling carriage 3 is set DPCH.Here, data are sent (step S10) to base station 1.

The 1 pair of travelling carriage 3 in base station means the advance notice (step S11) that data transmit.Then, predetermined value (step S12) will be improved with the corresponding SIR of the quality of reception of UL DPCH in base station 1.In addition, make the transmitted power of the TPC bit that sends with DL DPCH increase predetermined value and send (step S13).In addition, when the reference power that will be used for balanced power promotes a predetermined value, the transmitted power of DL DPCH is also promoted a predetermined value (step S14).

This power-balance is 3GPP (third generation partnership projects) defined, is in the degree that does not influence the closed loop transmission power control, by the approaching described reference power of the transmitted power that makes DL DPCH at leisure, makes the described transmitted power balance between the base station.Be in grouping bag transmission base station 1, to promote predetermined value for carrying out the employed reference power of this balance adjustment.

In travelling carriage 3, receive transmit advance notice from the data of base station 1 after, only send TPC signal that base station 1 sends the transmitted power of the UL DPCH that self sends controlled (step S15) according to the grouping bag.

Under above-mentioned state, utilize HS-PDSCH to wrap #1 (step S16) from base station 1 first grouping after travelling carriage 3 transmissions are divided into piece with data, if in travelling carriage 3, correctly received this grouping bag #1, then utilized HS-DPCCH to send ACK (step S17) to base station 1.Below, similarly the 1 transmission grouping bag #2 (step S18) from the base station sends ACK (step S19) from travelling carriage 3 to base station 1.

After data send end, base station 1 notice travelling carriage 3 EDs (End of Data) (step S20).Response data sends and finishes, and returns processing in base station 1, and altered respectively each numerical value in step S12～S14 is returned to initial condition (step S21).And, in travelling carriage 3, the recovering state that the TPC that only sends base station 1 with grouping bag in step S15 is controlled the transmitted power of ULDPCH is to utilize the TPC of all base stations in the soft handing-over to control this initial condition of transmitted power (step S22) of UL DPCH.In addition, also can surrogate data method finish the notice of (End of Data), when the grouping bag is not sent out in the scheduled time, turn back to the initial condition before the grouping bag sends.

Shown in above-mentioned step S15, only the TPC signal that sends base station 1 with grouping bag comes the transmitted power of UL DPCH that travelling carriage 3 is sent self to control, thereby can control the transmitted power of travelling carriage, the UL DPCH that makes the grouping bag send in the base station 1 satisfies aimed quality, thereby the quality of reception of the ack/nack signal among, the HS-DPCCH that power after the constant offset power value (Δ in the formula (1)) sends to have added in this UL DPCH also satisfies aimed quality.Consequently, the reception precision of ack/nack signal has improved, and the throughput that sends based on the data of HS-DPSCH has also increased.

In addition, what grouping bag sent that base station 1 improves the TPC signal that sends with DL DPCH starts power (step 13), perhaps improve the transmitted power (step S14) of the reference power and the DL DPCH of power-balance, thus, reduced the reception error rate that the grouping bag sends the TPC signal that base station 1 sent, and improved the precision of the transmission power control in the travelling carriage 3, therefore, can further improve the quality of reception that the grouping bag sends the ack/nack signal in the base station 1.In addition, send in the base station 1,, can improve the quality of reception of the ack/nack signal in this base station 1 by promoting the target SIR (step S12) of UL DPCH at the grouping bag.

According to first embodiment, needn't as second method in the past, change the time slot data mode, and, because the offset power of DPCH and HS-DPCCH value is constant, so can be as first and second method in the past do not cause channel to infer that precision reduces, thereby needn't add pilot signal to HS-DPCCH owing to the quality of reception of the pilot signal of DPCH reduces.

In addition, in this first embodiment, only in grouping pack receiving and transmitting process, adopt the processing of step S12～S15, in than time grouping bigger time scale of pack receiving and transmitting time, beyond the grouping pack receiving and transmitting time, do not carry out these and handle, so can in this time, not produce the situation about increasing of interfering.

In addition, only just can realize purpose of the present invention, and the combination of actions enforcement in the grouping bag transmission base station 1 of the action of described step S15 and step S12 also can be realized purpose of the present invention by the action in the travelling carriage 3 of step S15.In addition, send in the base station 1,, also can realize purpose of the present invention even the action of step S13 or the action of step S14 are carried out respectively independently at the grouping bag.In addition, it is also passable only to improve the reference power of power-balance of step S14.

Fig. 3 and Fig. 4 show respectively and are used to realize the base station of first embodiment and the functional block diagram of travelling carriage.With reference to Fig. 3, in the base station, from the received signal of antenna 11 by antenna switching unit (DUP: duplexer) 12 be input to receiving unit 13, amplify, processing such as frequency conversion, demodulation.Demodulation output is separated into user profile and various control information by channel separation device 14.These control informations are imported into control section (CPU) 15, and processing such as the step S12 shown in the precedence diagram of Fig. 2～S14 and S21 are carried out according to the procedure order that is stored in advance in the memory 16.

On the other hand, user profile relative with travelling carriage and control information are synthesized at channel composite part 17, and offer after amplifying by amplifier section 18 and send part 19, and modulate and processing such as frequency conversion, send by antenna switching unit 12 and antenna 11 again.

With reference to Fig. 4, in travelling carriage, be provided for receiving unit 23 by antenna switching unit 22 from the received signal of antenna 21, and amplify, processing such as frequency conversion, demodulation.Demodulation output is separated into user profile and TPC signal as control information by channel separation device 24.This TPC signal is imported into control section (CPU) 25, and the processing of step S15 shown in the precedence diagram of Fig. 2 and S22 is carried out according to the procedure order that is stored in advance in the memory 26.

On the other hand, user profile relative with the base station and control information are synthesized at channel composite part 27, and offer after amplifying by amplifier section 28 and send part 29, and modulate and processing such as frequency conversion, send by antenna switching unit 22 and antenna 21 again.

Then, the action sequence diagram with reference to Fig. 5 illustrates the second embodiment of the present invention.Should be after the data that travelling carriage 3 sends arrive RNC from communication network, RNC sends these data to the base station that travelling carriage 3 is set DPCH.Here, data are sent to base station 1 (step S30).

Base station 1 means the advance notice (step S31) that data transmit to travelling carriage 3.Then, base station 1 will promote predetermined value (step S32) with the corresponding desired value SIR of the quality of reception of UL DPCH.On the other hand, if after travelling carriage 3 was received data transmission advance notice from base station 1, then the TPC signal that is only sent according to grouping bag transmission base station 1 was controlled the transmitted power (step S33) of the UL DPCH that self sends.In addition, travelling carriage 3 only makes the target SIR of DL DPCH increase predetermined value (step S34).

In addition, travelling carriage 3 control makes that the ascensional range of transmission power control of the UL DPCH in self is bigger than fall, makes that the increase and decrease of controlled step is asymmetric (step S35).That is, to increase step be Δ Pup if establish, and establishes that to reduce step be Δ Pdown, then makes Δ Pup＞Δ Pdown.

In addition, travelling carriage 3 generates the TPC signal (step S36) of the power control that is used for DL DPCH by send the reception SIR of the DL DPCH of base station 1 transmission from the grouping bag.

Then, utilize HS-PDSCH to wrap #1 and #2 (step S37, S39), utilize HS-DPCCH to send to mean to base station 1 and received the respectively ack signal (step S38, S40) of grouping bag from travelling carriage 3 from base station 1 each grouping after travelling carriage 3 transmissions are divided into piece with data.After data sent and finish, (step S41) finished to travelling carriage 3 notification datas in base station 1.Respond this ED, in base station 1, will in step S32, altered value revert to former state (step S42), and in travelling carriage 3, will in step S33～S36, altered processing revert to former state (step S43).In addition, in the present embodiment, also can the surrogate data method end notification, make when the bag that do not divide into groups at the appointed time sends over, just turn back to the initial condition before the grouping bag sends.

In this second embodiment, the step S12 and S1 5 identical locating (S32 and S33) of the precedence diagram in the Fig. 2 that carries out with first embodiment, can also be in travelling carriage 3, increase (step S34) by the target SIR that makes DL DPCH, raising is in the quality of reception of the TPC signal of travelling carriage reception, and the precision of the transmission power control on the raising UL.Thus, improve the quality of reception that the grouping bag sends the ack/nack signal in the base station.

In addition, the controlled step of the transmitted power by making the UL DPCH in the travelling carriage 3 is asymmetric, and making increases step than reducing step big (step S35), thereby transmitted power is increased, and makes it the quality of reception that reaches required immediately.Therefore, even also can guarantee required quality in the time in the such short transmission of grouping bag.In addition, generate TPC signal (step S36) by the reception SIR that sends the DL DPCH of base station from the grouping bag, make this DL DPCH become big thus in the quality of reception of travelling carriage, thereby can correctly receive the TPC signal that is included in wherein, consequently, can in base station 1, correctly receive the HS-DPCCH that sends from travelling carriage.

In addition, in a second embodiment, only in sending, adopts by grouping bag the processing of step S32～S36, in time scale in the time bigger than the grouping pack receiving and transmitting time, beyond the grouping pack receiving and transmitting time, do not carry out these processing, thereby in this time, can not produce the interference increase.

And in travelling carriage 3, even the just action of independent implementation step S34 and the action of step S36 respectively also can realize purpose of the present invention.In addition, grouping bag sends the action of the step S32 in the base station 1, after the combination of actions of step S33 in the travelling carriage 3, in conjunction with the action of the step S35 in the travelling carriage 3, also can realize purpose of the present invention again.

Obviously, Fig. 3 and functional block diagram shown in Figure 4 also are applicable to base station and the travelling carriage that is used for realizing this second embodiment.

Then, the flow process with reference to Fig. 6 and Fig. 7 describes the third embodiment of the present invention.Fig. 6 is the motion flow of travelling carriage, and response transmits advance notice (step S5 1) from the data of grouping bag transmission base station 1, and travelling carriage 3 is determined the increment of the offset power Δ SHO of HS-DPCCH according to connecting base station 1,2 with the quality of the DL of predetermined transmitted power transmission.Specifically, measure received power RP1, RP2 (step S52), and judge the quality of DL from the common pilot signal of the connection base station under the soft hand-off state 1,2.

According to this received power RP1, RP2, determine the increment (step S53) of the offset power Δ SHO of HS-DPCCH.Specifically, can calculate offset power Δ SHO by following formula:

ΔSHO＝ΔNON-SHO+10log ₁₀{max(RP1，RP2)/RP1}(dB) (2)。

Here, the offset power during the soft hand-off state of Δ NON-SHO right and wrong, max (RP1, RP2) expression RP1, maximum that among the RP2.

Therefore, if RP1＞RP2, Δ SHO=NON-SHO then, if RP1＜RP2, then

ΔSHO＝ΔNON-SHO+10log ₁₀(RP2/RP1) (3)，

Second of the right is the increment of offset power.Make offset power only increase the increment that this is determined, and send HS-DPCCH (step S54).

Fig. 7 is the motion flow that the grouping bag among this 3rd embodiment sends the base station.In addition, the flow process of this Fig. 7 is identical with the action of the base station of following the 4th embodiment.With reference to Fig. 7, the judgement of ACK/NACK is carried out in the reception (step S61) of response HS-DPCCH, as is judged to be " NACK " (being " N " in step S62), then carries out common process (step S63).Promptly if " NACK " then carries out the transmission once more of respective packets bag.

As in step S62, being judged as " ACK ", then determine the action that the grouping bag among the UL sends according to the confidence level of the reception result of determination of the ACK/NACK of HS-DPCCH.That is, detect the confidence level (step S64) of the reception result of determination of ACK/NACK, relatively this confidence level and predetermined threshold (step S65).If confidence level, then transfers common process (step S63) to than threshold value height, if low, then irrelevant and be judged as NACK (step S66) usually with ack/nack signal.Therefore, carry out the transmission once more (step S67) of respective packets bag.

According to this 3rd embodiment, compare with other base stations in being connected the base station, send the propagation loss (line quality) of the UL of base station according to the grouping bag, if promptly propagation loss is big, then set bigger offset power (Δ SHO), if little then set less deviation power, thereby can compensate the reduction of the quality of reception of the ack/nack signal that propagation loss causes.In addition, during ACK/NACK in grouping bag transmission base station judges, if the NACK erroneous judgement is decided to be ACK, then can produce the grouping packet loss, so when being judged as ACK, usually it is judged to be NACK according to the confidence level that receives result of determination, thereby can reduces the error rate of NACK and reduce the grouping loss rate, and then can improve throughput.

In the present embodiment, the base station number that is in soft hand-off state is 2, when being 3 when above, and the max{RP1 in the obviously above-mentioned as can be known formula (2), RP2} is max{RP1 just, RP2, RP3 ... .}.

In addition, the action of Fig. 6 and Fig. 7 can realize by each functional block shown in Fig. 3 and Fig. 4 certainly.

Below the fourth embodiment of the present invention is described.Fig. 8 is the action flow chart of the travelling carriage of this 4th embodiment.Response data transmits advance notice (step S71), and travelling carriage is counted the increment (step S72) that N determines the offset power Δ SHO of HS-DPCCH according to the base station in the soft handing-over.Specifically, be to calculate offset power according to following formula,

ΔSHO＝ΔNON-SHO+10log ₁₀N(dB) (4)，

Thus, the increment of offset power is second of formula (4) the right.Offset power with the formula (4) that increased this increment sends HS-DPCCH (step S73).The motion flow that grouping bag among this 4th embodiment sends the base station is identical with the motion flow of Fig. 7.

In this 4th embodiment, has following effect.Promptly, if counting N, the base station in the soft handing-over becomes big, then the gain of the receive diversity of DPCH becomes big, so the transmitted power of DPCH reduces, but in travelling carriage, if should become big by number N, because correspondingly the increment of the offset power of HS-DPCCH also becomes big, thereby the quality of reception of HS-DPCCH can be controlled to be desirable value no matter how many base station numbers in the soft handing-over is.

In addition, the bit series of signals that the base station receiving mobile sends, and carry out the judgement of ACK or NACK, but when the quality of reception of bit series was relatively poor, the confidence level of its signal message reduced.At this moment, no matter whether sent NACK, all be judged as ACK from travelling carriage.Therefore, in the present invention data send in the base station (the grouping bag sends the base station), usually are judged as NACK according to the confidence level of the reception result of determination of the ACK/NACK of HS-DPCCH.Thus, can reduce the error rate of NACK, reduce the grouping loss rate.In addition, owing to often do not carry out the calculating of confidence level of reception result of determination of the ACK/NACK of HS-DPCCH, just when being judged as ACK, just calculate, thereby can reduce the load that is used for described calculating.

In addition, in this 4th embodiment, in travelling carriage, the only processing of application drawing 8 in the grouping bag sends, owing in the time bigger than grouping bag transmitting time, beyond the grouping bag transmitting time, do not carry out these processing, thereby in this time, can not produce to interfere and increase in time scale.

The action of above-mentioned the 4th embodiment obviously also can realize by Fig. 3 and each functional block shown in Figure 4.

Below the fifth embodiment of the present invention is described.In the 5th embodiment, the DPCH of up link as shown in figure 10, the branch that connects in radio network controller (RNC) 10 between the base station 1,2 assembles, this DPCH often is controlled as the predetermined quality of reception by the fast closed-loop transmission power control simultaneously.Specifically, the TPC bit that the travelling carriage basis sends from the base station increases and decreases the transmitted power of DPCH, and the power that the transmitted power PDPDCH of DPDCH gets to add predetermined offset value delta 1 on the transmitted power PDPCCH of DPCCH sends.That is, following relation of plane sends:

PDPDCH＝PDPCCH+Δ1(dB) (5)。

In addition, the transmitted power PH of HS-DPCCH on the transmitted power PDPCCH of this DPCCH, to add predetermined offset value delta 2 power send.That is, following relation of plane sends:

PH＝PDPCCH+Δ2(dB) (6)。

Wherein, in formula (5) and formula (6), each value is decibel value.

It is identical that this action and first embodiment come down to, but in this 5th embodiment, when the transmitted power of travelling carriage is restricted to predetermined maximum value, preferentially guarantee the transmitted power of HS-DPCCH, and suppress the transmitted power of DPDCH.Except that this point, all identical with first embodiment.Carry out in the control section 25 of the travelling carriage that is controlled at Fig. 4 of the transmitted power of inhibition DPDCH.

Fig. 9 is the flow process that the transmitted power of the DPDCH among this 5th embodiment suppresses.With reference to Fig. 9, travelling carriage receives TPC bit (step S81), calculates the total transmitted power (step S82) of DPCCH and HS-DPCCH, and calculating can be distributed to the maximum transmit power (step S83) of DPDCH.This DPDCH maximum transmit power is to obtain by the total transmitted power that deducts DPCCH and HS-DPCCH from the predetermined maximum of transmitted power.

Then, when the transmitted power of the DPDCH that calculates by formula (5) is no more than the DPDCH maximum transmit power, with the transmitted power of DPDCH as the value (step S85) that calculates by formula (5), when the transmitted power of the DPDCH that calculates by formula (5) surpassed the DPDCH maximum transmit power, the transmitted power that suppresses DPDCH made it to be DPDCH maximum transmit power (step S86).

In addition, as the method for the transmitted power that suppresses DPDCH,, also can temporarily reduce the value of the offset value delta 1 in the formula (5) when the total transmitted power of travelling carriage during near predetermined maximum value.

In this 5th embodiment, has following effect.Promptly, when the propagation loss from the travelling carriage to the base station is big, when perhaps the interference wave power of grouping bag transmission base station reception is big, travelling carriage need send HS-DPCCH with big transmitted power, and it is DPCCH is constant with the ratio maintenance of the transmitted power of DPDCH, because the transmitted power of travelling carriage reaches predetermined maximum value, thus the transmitted power of HS-DPCCH is fully increased, thus the quality of reception that is contained in the ack/nack signal among the HS-DPCCH may reduce.

But, in this 5th embodiment, when the transmitted power of travelling carriage is restricted to the maximum of regulation, owing to suppressed the transmitted power of DPDCH, so can become big to the transmitted power that HS-DPCCH distributes, thereby reduce the possibility of the quality of reception reduction of ack/nack signal.Consequently, in grouping bag transmission base station, improved the quality of reception of ack/nack signal, and increased throughput based on the data transmission of HS-DPSCH.

In addition, in the 5th embodiment, under the soft hand-off state of travelling carriage and a plurality of base station sets dedicated channels, shown in the step S15 of first embodiment, wrap in the reception in grouping, a TPC signal with grouping bag transmission base station comes the transmitted power of the UL DPCH of travelling carriage transmission is controlled.At this moment, this travelling carriage be in the base station of soft hand-off state, no matter whether the quality of reception of DPCCH and DPDCH satisfies the predetermined quality target in the base station beyond the grouping bag sends the base station, because the DPCCH in the grouping bag transmission base station and the quality of reception of DPDCH do not satisfy the predetermined quality target, so the situation that exists travelling carriage that the transmitted power of DPCCH and DPDCH is increased.At this moment, the transmitted power of DPDCH is increased to required more than.This is because the DPDCH that receives in being in a plurality of base stations of soft hand-off state divides the cause that assembles.Therefore, under soft hand-off state, it is higher that the transmitted power of travelling carriage is restricted to the possibility of predetermined maximum.

But in this 5th embodiment, the maximum that makes the transmitted power of HS-DPCCH not be moved the transmitted power of platform by the transmitted power that suppresses DPDCH limits.Therefore, particularly under soft hand-off state, the effect that sends the quality of reception that improves ack/nack signal in the base station at the grouping bag increases.

As mentioned above, according to the present invention, can obtain following effect: though when travelling carriage by being in soft hand-off state during with the state of a plurality of base station sets DPCH, because sending the base station, the grouping bag can receive HS-DPCCH with enough quality, reduced thus be contained among this HS-DPCCH, expression could normally receive the error rate of the ack/nack signal of grouping bag, the packet loss that do not divide into groups has been realized the raising of throughput.

In addition, just in soft hand-off state and in the grouping pack receiving and transmitting, just carry out the reduction control of above-mentioned ack/nack signal error rate, in the time scale grouping bag wait bigger than the grouping pack receiving and transmitting time, do not carry out this control, thereby the increase that can not cause transmitted power just can reduce the error rate of ack/nack signal, and the diversity effect in soft when handing-over of UL/DL DPCH does not have any loss yet.

Industrial applicibility:

The present invention particularly is applicable to the system that sends ACK/NACK by HS-DPCCH from travelling carriage to the base station applicable to the cellular system that comprises travelling carriage and base station.

Claims (3)

1. the communication control method in the travelling carriage, this method said method comprising the steps of by carrying out soft handover with a plurality of base station sets special uplink channels and downlink dedicated channels in described travelling carriage:

Utilize the grouping that send grouping of shared channel from described a plurality of base stations to send the base station and receive described grouping;

Increase sends the base station quality of reception that send, that be contained in transmission power control signal described downlink dedicated channels only to improve from described grouping via the target sir of the signal of described downlink dedicated channels reception.

2. communication control method as claimed in claim 1, further comprising the steps of:

Receive the transmission power control signal of described downlink dedicated channels; And

Control the through-put power of described special uplink channel according to the transmission power control signal that only sends from described grouping transmission base station.

3. the communication control method in the base station, this method are controlled described base station and are carried out soft handover with described travelling carriage to utilize the uplink and downlink dedicated channel of setting with travelling carriage, said method comprising the steps of:

Send grouping via shared channel to described travelling carriage;

Send the transmission power control signal of described downlink dedicated channels to described travelling carriage; And

The through-put power of described downlink dedicated channels is increased a predetermined value,

Wherein said travelling carriage increases the target sir that is contained in the signal that receives via described downlink dedicated channels, with the quality of reception of the transmission power control signal that improves described downlink dedicated channels.

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