CN1206319A - CDMA communication system and apparatus - Google Patents
CDMA communication system and apparatus Download PDFInfo
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- CN1206319A CN1206319A CN 98108092 CN98108092A CN1206319A CN 1206319 A CN1206319 A CN 1206319A CN 98108092 CN98108092 CN 98108092 CN 98108092 A CN98108092 A CN 98108092A CN 1206319 A CN1206319 A CN 1206319A
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Abstract
Pilot symbol 1021 of the first slot and TPC symbol 1022 thereof are transmitted by the same transmission power as that one the commencement of transmission, and the transmission power of data symbol 1023 is made zero. In slots including and after the second slot, pilot symbol 1031 and TPC symbol 1032 are transmitted at the same position as that on the commencement of transmission and by smaller transmission power than that on the commencement of transmission, and further dummy signal 1033 is transmitted, as in the above, by the same transmission power after TPC.
Description
The present invention relates to a kind of CDMA (code division multiple access) communication system and equipment that is used for digital radio.
Below with reference to Fig. 1 to Fig. 3 prior art is described.
Fig. 1 is the travelling carriage of traditional C DMA communication system and the allocation plan of base station.In Fig. 1 the travelling carriage of cdma communication system comprise the time division multiplexing device 103, CDMA modulator 104, transmit amplifier 105, antenna 106 of extending controller 101 that input sends data 100, extending controller 101 outputs, pilot frequency code element 102 and power control signal (TPC) that multiple connection is described later, to the sir measurement equipment 108 of time division multiplexing device 103 power output control signals (TPC) 107, signal splitter 110, the CDMA demodulator 111 that output receives data 109, and retainer 112 synchronously.
On the other hand, the base station of cdma communication system is also according to top such composition.Promptly, the base station of cdma communication system comprises the time division multiplexing device 203, CDMA modulator 204, transmit amplifier 205, antenna 206 of output, pilot frequency code element 202 and the power control signal (TPC) of extending controller 201 that input sends data 200, extending controller 201 that multiple connection is described later, to the sir measurement equipment 208 of time-multiplexed device 203 power output control signals (TPC) 207, signal splitter 210, the CDMA demodulator 211 that output receives data 209, and retainer 212 synchronously.
The transmission that the travelling carriage of the cdma communication system that as above constitutes is described below is handled.Send data 100 by extending controller control expansion.That is, judge to send data rate,, then be processed into sending data 100 that the time slot amplitude is little, Baud Length is long,, then be processed into sending data 100 that the time slot amplitude is big, the Baud Length weak point if send the data rate height if speed is low.The power control signal (TPC) 107 that the time slot of time division multiplexing device 103 multiple connection results, pilot frequency code element 102 and sir measurement equipment 108 obtain, by CDMA modulator 104 it is carried out code division multiple access modulation, amplify by transmit amplifier 105, send by antenna 106 then.
For example, sending under the data rate condition with higher, using the transmitted power identical to send data symbols 3 with the pilot frequency code element 1 shown in Fig. 2 A and TPC code element 2.In addition, shown in Fig. 2 B,,, also send pilot frequency code element 11 and TPC code element 12 with transmitted power identical when sending beginning even sending data rate when higher if there are not data.Yet for data symbols 13, transmitted power is decided to be 0.
On the other hand, sending under the lower situation of data rate, shown in Fig. 2 C, send pilot frequency code element 21 and TPC code element 22 with transmitted power identical when sending beginning, send data symbols 23 with smaller transmission power, and do not prolong the time span of code element.
In addition,, shown in Fig. 2 D, send pilot frequency code element 31 and TPC code element 32, can transmitted power same as described above send data symbols 33 with transmitted power identical when sending beginning sending under the lower situation of data rate.In this case, owing to only have a spot of data, therefore, just stopped in the middle of being sent in.
For above-mentioned sending method, data symbols 23 and 33 quality can be done to such an extent that equate with the quality of data symbols 3.
For whole transmit frame, if data rate is higher, then the transmitted power figure becomes as shown in Figure 3A, if there are not data to exist, then the transmitted power figure becomes shown in Fig. 3 B.If data rate is lower, then the transmitted power figure becomes shown in Fig. 3 C and Fig. 3 D.
On the other hand, the receiver side of base station receives data by antenna 206, by CDMA demodulator 211 demodulating datas, and by signal splitter 210 splitting signals.Synchronously retainer 212 utilizes pilot frequency code element to keep synchronously, and wherein synchronous maintenance can make CDMA demodulator 211 signal that arrives of demodulate reception stably.In addition, sir measurement equipment 208 utilizes pilot frequency code element and TPC code element, calculates the SIR (signal/interference ratio) of reverse link circuit.In view of the above, the power control signal (TPC) 207 of calculation control reverse link circuit transmission power value.
In addition, the reception processing procedure of the transmission processing procedure of the reception processing procedure of the transmission processing procedure of base station side and travelling carriage and mobile station side and base station is identical.
As mentioned above, for traditional cdma communication system, can send the CDMA signal of various speed.
Yet, in above-mentioned traditional C DMA communication system, not existing under the lower situation of data and data rate, the figure of transmitted power becomes the pulse signal of specific period.As a result, in specific frequency components, produce the high-power line spectrum that disturbs miscellaneous equipment, thereby bring problem, to being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
Therefore, one object of the present invention is to provide a kind of cdma communication system, even it also can not produce the pulse signal of specific period not having the transmission data and sending under the low situation of data rate.
Above-mentioned purpose is to realize like this, a kind of cdma communication equipment promptly is provided, speed judgment means that first time slot that utilizes transmit frame judge to send data rate is set, handles to make and offer that the transmitted power that sends control information of each time slot stem equals to send the level controller of data sending power behind second time slot, and use the dispensing device that sends each treated frame corresponding to the even transmitted power of judged result.
Fig. 1 is the allocation plan of traditional C DMA communication equipment;
Fig. 2 A to Fig. 2 D is the schematic diagram of classical signal form;
Fig. 3 A to Fig. 3 D is the schematic diagram of traditional transmitted power figure;
Fig. 4 is the allocation plan according to the cdma communication equipment of first embodiment of the invention;
Fig. 5 A to Fig. 5 G is the schematic diagram of signal format used among first embodiment;
Fig. 6 A to Fig. 6 C is the schematic diagram of transmitted power figure used among first embodiment;
Fig. 7 is the allocation plan according to the cdma communication equipment of second embodiment of the invention;
Fig. 8 A to Fig. 8 G is the schematic diagram of signal format used among second embodiment;
Fig. 9 A to Fig. 9 C is the schematic diagram of transmitted power figure used among second embodiment;
Figure 10 is the allocation plan according to the cdma communication equipment of third embodiment of the invention;
Figure 11 A to Figure 11 G is the schematic diagram of signal format used among the 3rd embodiment;
Figure 12 A to Figure 12 B is the schematic diagram of transmitted power figure used among the 3rd embodiment;
Figure 13 is the structural representation according to the cdma communication equipment of fourth embodiment of the invention;
Figure 14 A to Figure 14 G is the schematic diagram of signal format used among the 4th embodiment;
Figure 15 A to Figure 15 B is the schematic diagram of transmitted power figure used among the 4th embodiment;
Figure 16 A to Figure 16 B is the schematic diagram of the signal format of first time slot;
Figure 17 is the structural representation according to the cdma communication equipment of fifth embodiment of the invention;
The schematic diagram of used signal format among Figure 18 A to Figure 21 B the 5th embodiment.
Cdma communication equipment according to the present invention comprises first time slot that utilize to send frame and judges and send data rate The speed judgment part, process to make and offer behind second time slot each time slot stem transmitted power that sends control information and equal to send Data sending power level control section, and use even transmitted power corresponding to judged result to send treated each The transmitting portion of frame.
For this structure, even because transmission rate is higher or lower, perhaps do not have the transmission data, can both be with all Even transmitted power transmission sends frame, thus can suppress the generation of specific period pulse, thus can prevent from being subjected to being easy to The equipment on every side that disturbs to cyclical signal produces adverse influence.
In addition, in cdma communication equipment according to the present invention, can be the level control section multiple connection part that does not exist the transmission data just glitch to be multiplexed into transmit frame is provided.
For this structure, even, the transmission data are not provided, also can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In addition, cdma communication equipment according to the present invention can be provided with the speed judgment part that first time slot that utilizes transmit frame is judged the transmission data rate; Constituting sending control information and send data and expanding to expansion control section on the whole time slot of each time slot behind second time slot; To send the transmission part of the frame that constitutes by time slot corresponding to the even transmitted power of judged result through expansion.
For this structure, can expand on all time slots sending control information and sending data, can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that periodic signal disturbs.
In addition, in cdma communication equipment according to the present invention, do not providing under the transmission data conditions, the expansion control section can expand on the whole time slot sending control information.
For this structure, even without the transmission data are provided, also can expand on the whole time slot sending control information and sending data, can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.Have again, owing to needn't send glitch, so can be suppressed to influence less to other user.
In cdma communication equipment according to the present invention, sending under the lower situation of data rate, the transmission part is sent control information by first slot transmission with identical transmitted power and sends data, and can control, to finish transmission immediately after having transmitted the transmission data.
For this structure, even it is lower to send data rate, because second time slot and later time slot all use uniform transmitted power to suppress, thereby suppressed the generation of specific period pulse, can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In addition, cdma communication equipment according to the present invention can be provided with judges that the speed whether transmission rate changes changes the judgment part and sends control section, according to judged result, under the situation that does not have to change in speed, send control section sends next frame with the transmitted power identical with the frame that is sending the sending control information of first time slot, under the situation that speed changes, send sending control information of next first time slot with transmitted power identical when sending beginning.
For this structure, only under the situation that sends the data rate change, just send control information with first slot transmission of transmitted power identical when sending beginning by each frame, sending under the situation that data rate not have to change, transmitting sending control information and send data with uniform transmitted power.Thereby, even, also can prevent to produce blank signal frame by frame, suppress the generation of specific period pulse not providing under the transmission data conditions.Therefore, can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In addition, in cdma communication equipment according to the present invention, under situation about sending continuously, send the sending control information of first time slot that control section can transmit transmit frame at random with transmitted power identical when sending beginning with identical transmitted power.
For this structure, because under situation about sending continuously with identical transmitted power, can transmit sending control information with transmitted power identical when sending beginning at random, so even produce the speed misjudgment when data rate changes sending, also can the error recovery state.
In addition, in cdma communication equipment according to the present invention, sending control information to comprise pilot frequency code element and power control signal.For this structure, can send and receive the frame that comprises a plurality of time slots safely.
In addition, in cdma communication equipment according to the present invention, according to judged result, do not providing under the transmission data conditions, can send control information and the data of special code type by first slot transmission with identical transmitted power, sending under the lower situation of data rate, can send control information and send data with transmission and transmit the transmission data repeatedly.
For this structure, owing to can carry out a yard type coupling at receiver side, so receiver side can easily be judged transmitted data rates at first time slot.
In addition, this cdma communication equipment can be applied to mobile station equipment and base station equipment.Mobile station equipment and base station equipment constitute cdma communication system.
For this structure, even it is high or low to send data rate, do not providing under the transmission data conditions, can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
Cdma communication method according to the present invention can utilize first time slot of transmit frame judge to send data rate, and in response to above-mentioned judged result, sends second time slot and later sending control information that time slot carried, and also sends data.
Utilize this method,, and do not provide when sending data even sending under the high or low situation of data rate, also can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In cdma communication method according to the present invention, according to judged result, do not provide when sending data, only send control information in first slot transmission, sending control information of second time slot and later slot transmission can send with the transmitted power littler than the transmitted power of first time slot, and sends glitch with the transmitted power identical with this little transmitted power.
Utilize this method, when the transmission data are not provided, can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In addition, in cdma communication method according to the present invention, obtaining according to judged result sending under the low situation of data rate and can send control information and send data in first slot transmission, make after the Baud Length sum that sends control information and send data equals slot length, can be on second time slot and later time slot, transmission sends control information and sends data.
Utilize this method,, also can make the Baud Length sum that sends control information and send data equal slot length even sending under the low situation of data rate, can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In cdma communication method according to the present invention, obtaining sending under the low situation of data rate according to judged result, send control information by first slot transmission and send data with identical transmitted power, after the transmission of finishing above-mentioned transmission data, can finish immediately to send.
Utilize this method, even sending under the low situation of data rate, because second time slot and later time slot all use uniform transmitted power to suppress, so can suppress the generation of specific period pulse, thereby can prevent to being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In addition, in cdma communication method according to the present invention, send under the data conditions not providing, only send control information, can expand to whole time slot to sending control information of sending on second time slot and the later time slot and send in first slot transmission.
Utilize this method,, also can expand to whole time slot sending control information and sending data even without the transmission data are provided, can be with uniform through-put power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.Moreover, owing to needn't send glitch, so can suppress the interference to other user very for a short time.
In addition, in cdma communication method according to the present invention, obtaining sending under the low situation of data rate according to judged result, send control information and send data in first slot transmission, can expand to whole time slot and send sending control information and sending data at second time slot and later time slot.
Utilize this method, sending control information and sending data in the time slot expands to whole time slot after can reaching second time slot, can be to send the power delivery transmit frame uniformly.Therefore, can suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
In addition, in cdma communication method according to the present invention,, can on first time slot, transmit the data that send control information with the special code type with identical transmitted power not provided according to judged result under the transmission data conditions.In addition, in cdma communication method according to the present invention, obtaining according to judged result sending under the low situation of data rate, can also with first slot transmission send control information and special code type data repeat to send identical transmission data together.
Utilize this method, can carry out a yard type coupling at receiver side.Thereby receiver side can easily be judged the transmission data rate at first time slot.
In addition, in cdma communication method according to the present invention, judge whether send data rate changes.If do not change, then send the sending control information of first time slot of next frame with the transmitted power identical with the frame that is sending, if changed, then can send sending control information of next first frame with transmitted power identical when sending beginning.
Utilize this method, only under the situation that transmission rate changes, transmitted power when can be used for sending beginning transmit on first time slot of each frame and is sent control information, and not have in transmission rate under the situation of change, can transmit sending control information and send data with uniform transmitted power.Therefore, under the situation of continuous no voice status, promptly, when the transmission data are not provided, can prevent to produce blank signal frame by frame, suppress the generation of specific period pulse, thereby can prevent being easy to be subjected to the surrounding devices generation adverse influence that cyclical signal disturbs.
Moreover, in cdma communication method according to the present invention, when sending continuously, can transmit the sending control information of first time slot of transmit frame at random with transmitted power identical when sending beginning with identical transmitted power.
Utilize this method, under situation about sending continuously, can the transmitted power when can be used for sending beginning transmit sending control information at random with identical transmitted power.Therefore, even misjudgment when transmission rate changes also can be proofreaied and correct this mistake.
In addition, in cdma communication method according to the present invention, sending control information to comprise pilot frequency code element and power control signal.Utilize this method, can send and receive the frame of forming by a plurality of time slots safely.
Below, describe preferred embodiment of the present invention with reference to the accompanying drawings in detail.
(embodiment 1)
In the first embodiment of the present invention, such a case is described, promptly, only at first time slot of frame pilot frequency code element and TPC (power control signal) code element being sent on the fixing position with the irrelevant fixed transmission power of speed, and send code element except that above-mentioned, in addition according to speed, on second time slot and later time slot, with transmitted power, send pilot frequency code element and TPC (power control signal) code element with data, and do not change its position corresponding to data rate.Thereby, can prevent from each time slot, to produce pulse, thereby suppress unnecessary line spectrum.
Fig. 4 is according to the mobile station equipment of the cdma communication system of first embodiment and the allocation plan of base station equipment.In Fig. 4, the travelling carriage of cdma communication system mainly is made up of following array apparatus: extending controller 1101, and input sends data 1100; Level controller 1113, input pilot signal 1102; Level controller 1114, input power control signal (TPC) 1107; Time division multiplexing device 1103, the output of multiple connection extending controller 1101, level controller 1113 and level controller 1114 and glitch 1115; CDMA modulator 1104; Transmit amplifier 1105; Antenna 1106; Sir measurement equipment 1108 is to time division multiplexing device 1103 power output control signals (TPC) 1107; Signal splitter 1110, output receives data 1109; CDMA demodulator 1111; Synchronous retainer 1112.
On the other hand, the base station of cdma communication system mainly is made up of following array apparatus: extending controller 1201, input transmission data 1200; The output of the extending controller 1201 that time division multiplexing device 1203, multiple connection are described later, pilot frequency code element 1202 and power control signal (TPC); CDMA modulator 1204; Transmit amplifier 1205; Antenna 1206; Sir measurement equipment 1208 is to time division multiplexing device 1203 power output control signals (TPC) 1207; Signal splitter 1210, output receives data 1209; CDMA demodulator 1211; Synchronous retainer 1212.
The transmission processing procedure of travelling carriage is described below.Send data 1100 by 1101 pairs of extending controllers and expand control.That is,, become data processing amplitude little and Baud Length is long, if the transmission rate height becomes data processing amplitude big and Baud Length short if transmission rate is low.
It is identical with data that level controller 1113 is processed into amplitude to the amplitude of pilot frequency code element 1102, and it is identical with data that level controller 1114 is processed into amplitude to the amplitude of power control signal (TPC) 1107.In time division multiplexing device 1103, above-mentioned result and glitch 1115 are carried out time division multiplexing, and carry out the CDMA modulation by CDMA modulator 1104, amplify by transmit amplifier 1105.Then, send by antenna 1106.
Describe signal format below with reference to Fig. 5, wherein a plurality of time slots are defined as a frame, suppose that transmission rate fixes in a frame.Sending under the high situation of data rate, shown in Fig. 5 A, only send pilot frequency code element 1001, TPC code element 1002 and data symbols 1003 with identical transmitted power at first time slot.In this case, shown in Fig. 5 B, send pilot frequency code element 1011, TPC code element 1012 and data symbols 1013 with identical transmitted power at second time slot and later time slot.In addition,, then shown in Fig. 5 C, send the pilot frequency code element 1021 and the TPC code element 1022 of first time slot, make the transmitted power vanishing of data symbols 1023 with transmitted power identical when sending beginning if the transmission data are not provided.
On the other hand, shown in Fig. 5 D, do not providing under the data conditions, on second time slot and later time slot, with position identical shown in Fig. 5 A on, to send pilot frequency code element 1031 and TPC code element 1032,, behind TPC, send glitch with identical transmitted power also in the position identical with Fig. 5 than transmitted power little shown in Fig. 5 A.
In addition, shown in Fig. 5 E, if transmission rate is low, then send the pilot frequency code element 1041 and the TPC code element 1042 of first time slot with transmitted power identical when sending beginning, for data symbols 1043, send with smaller transmission power, do not prolong the time span of code element.
Again, shown in Fig. 5 F, if data rate is low, then send pilot frequency code element 1061, TPC code element 1062 and data symbols 1063 with transmitted power identical when sending beginning, because data are less, transmission can finish in the centre.
Moreover, shown in Fig. 5 G, if transmission rate is low, then on second time slot and later time slot, send pilot frequency code element 1051, TPC signal 1052 and data symbols 1053 with identical transmitted power, make the Baud Length sum equal slot length, wherein can regulate transmitted power, make the identical in quality of the quality of data symbols 1053 and data symbols 1003.
Below, with reference to Fig. 6 entire frame is described.If the data rate height, then the transmitted power figure becomes as shown in Figure 6A, and the transmitted power that sends position 1071 becomes identical with data 1073.If data are not provided, the through-put power figure becomes shown in Fig. 6 B, and wherein, the transmitted power position 1071 after second time slot reaches on the time slot and the transmitted power of empty data 1072 are low, and only the transmitted power of the transmission control bit 1071 of first time slot is high.Under the low situation of data rate, the transmitted power figure becomes shown in Fig. 6 C, wherein second time slot and after the transmitted power of transmission control bit on the time slot and data 1073 low, and the transmitted power height of the transmission control bit 1071 of first time slot only.Both of these case all can on the time slot, make transmitted power even after second time slot reaches respectively.
From above as can be known,, be adversely affected so can prevent the surrounding devices that is easy to disturbed by periodic signal owing to when any data rate, do not have the periodic signal that repeats with time slot.
On the other hand, the receiver side of base station receives data by antenna 1206, by 1211 demodulation of CDMA demodulator, and by signal splitter 1210 splitting signals.Utilize pilot frequency code element, synchronously retainer 1212 keeps synchronously, thereby can make CDMA demodulator 1211 signal that arrives of demodulate reception stably.And sir measurement equipment 1208 utilizes pilot frequency code element and TPC code element, calculates the SIR (signal/interference ratio) of reverse link circuit.In view of the above, the power control signal of the transmission power value of calculation control reverse link circuit (TPC) 1207.
In addition, the reception of the transmission of base station side and mobile station side is similar to the transmission of base station side of prior art and the reception of mobile station side.Owing to only in the reverse link circuit, produce the problem that the surrounding devices that disturbed by periodic signal is had adverse effect, so the signal in the forward link circuit is handled like that by preceding.
Extending controller 1201 controls send the expansion of data 1200.That is,, then become amplitude little and Baud Length is long,, then become the big and Baud Length weak point of amplitude sending data processing if send the data rate height sending data processing if it is low to send data rate.Result as the base station, the power control signal (TPC) 1207 that time division multiplexing device 1203 multiple connection pilot frequency code elements 1202 and sir measurement equipment 1208 obtain, 1204 pairs of CDMA modulators send data and carry out the CDMA modulation, and amplify by transmit amplifier 1205, send by antenna 1206 then.
The receiver side of travelling carriage receives data by antenna 1106, carries out demodulation by CDMA demodulator 1111, and cuts apart this signal by signal splitter 1110.Synchronously retainer 1112 utilizes pilot frequency code element 1112 to keep synchronously, thereby makes CDMA demodulator 1111 signal that arrives of demodulate reception stably.In addition, sir measurement equipment 1108 utilizes pilot frequency code element and TPC code element, calculates the SIR (signal/interference ratio) of reverse link circuit.In view of the above, the power control signal of the transmission power value of calculation control reverse link circuit (TPC) 1107.
As mentioned above,, have nothing to do, so can lingeringly this part not carried out sir measurement and power control with speed because the pilot frequency code element and the power control signal of first time slot are fixed.In addition, by measuring the transmitted power of TPC further part in first time slot, can judge the speed that sends data.Therefore, after second time slot reaches, on the time slot, utilize this judged result can send control, can prevent to produce the recurrent pulse that causes by pilot frequency code element on each time slot and TPC.Thereby, can prevent that the surrounding devices that is easy to disturbed by periodic signal is adversely affected.
(embodiment 2)
In the second embodiment of the present invention, such a case will be described, only first time slot of frame with and with the irrelevant fixed transmission power of speed pilot frequency code element and TPC (power control signal) code element are sent on the fixing position, and according to the code element of speed transmission except that above-mentioned, in addition, on second time slot and later time slot,, send the data of pilot frequency code element and TPC (power control signal) code element with transmitted power and symbol time corresponding to data rate.Thereby, can prevent from each time slot, to produce pulse, thereby suppress unnecessary line spectrum, can be with satisfied quality pilot signal transmitted and TPC.
Fig. 7 is according to the travelling carriage of the cdma communication system of second embodiment of the invention and the allocation plan of base station.In Fig. 7, extending controller 2113,2114 is set, replace the level controller 1113,1114 of structure shown in Fig. 4.All other structures are the same with structure shown in Figure 4, therefore omitted the description to it.
The basis transmission processing procedure of the travelling carriage of the cdma communication system of second embodiment of formation as mentioned above is described below.Extending controller 1101 controls send the expansion of data 1100.That is,, become data processing amplitude little and Baud Length is long, if the transmission rate height becomes data processing amplitude big and Baud Length short if transmission rate is low.Extending controller 2113,2114 expands to whole sending time slots to pilot frequency code element 2102 and power control signal 1107 with sending data.
The output of the above-mentioned extending controller 1101,2113,2114 of time division multiplexing device 1103 multiple connections, and by the 1104 modulation multiple connection outputs of CDMA modulator, amplify by transmit amplifier 1105, send by antenna 1106 then.
Below with reference to Fig. 8 signal format is described.Here, a plurality of time slots are defined as a frame, and the hypothesis transmission rate is fixed in a frame.Shown in Fig. 8 A, if the transmit data rate height, then only in first time slot, with identical transmitted power transmission pilot frequency code element 2011, TPC code element 2012 and data symbols 2013.In this case, shown in Fig. 8 B, on second time slot and later time slot, send pilot frequency code element 2001, TPC code element 2002 and data symbols 2003 with identical transmitted power.
In addition,, shown in Fig. 8 C, send the pilot frequency code element 2021 and the TPC code element 2022 of first time slot, and to make the transmitted power of data symbols 2023 be zero with transmitted power identical when sending beginning if the transmission data are not provided.On the other hand, shown in Fig. 8 D,, then on second time slot and later time slot, pilot frequency code element 2031 and TPC code element 2032 are expanded to whole time slot, send them with the transmitted power littler than situation shown in Fig. 8 A if data are not provided.
In addition, shown in Fig. 8 E,, then send the pilot frequency code element 2041 and the TPC code element 2042 of first time slot, send data symbols 2043, do not prolong the time span of code element with little transmitted power with transmitted power identical when sending beginning if data rate is low.Thereby, can make the quality of data symbols 2043 be equal to the quality of data symbols 2013.
In addition, shown in Fig. 8 F,, then can send pilot frequency code element 2061 and TPC code element 2062, send data symbols 2063 with identical transmitted power with transmitted power identical when sending beginning if data rate is low.In this case, because data are less, so finish to send in the centre.Thereby, can make the identical in quality of the quality of data symbols 2063 and data symbols 2013.
In addition, shown in Fig. 8 G, if data rate is low, then second time slot and after send data symbols 2053 with transmitted power on the time slot, and Baud Length be processed into make these length sums equal slot length.And, regulate transmitted power, make become identical in quality with data symbols 2013 of the quality of data symbols 2053.
Below, with reference to Fig. 9 entire frame is described.If the data rate height, then the through-put power figure becomes shown in Fig. 9 A, and the transmitted power that sends control bit 2071 becomes identical with the transmitted power of data 2073.If, data are not provided, then the transmitted power figure becomes shown in Fig. 9 B, the transmitted power height of the transmission control bit 2071 of first time slot only wherein, second time slot and after the transmitted power of transmitted power position 2071 of time slot low.If data rate is low, then the transmitted power figure becomes shown in Fig. 9 C, the transmitted power height of the transmission control bit 2071 of first time slot only wherein, second time slot and after the transmitted power of the transmission control bit 2071 of time slot and data 2073 low.Under any situation, the transmitted power of time slot was all even after second time slot reached.In addition, because the processing procedure of base station is identical with first embodiment, so omitted description to it.
From above as can be known,, be adversely affected so can prevent the surrounding devices that is easy to disturbed by periodic signal owing to when any data rate, do not deposit the periodic signal that repeats by time slot.
(embodiment 3)
In the 3rd embodiment, such a case is described, promptly, first time slot at frame sends to pilot frequency code element and TPC (power control signal) code element on the fixing position with the irrelevant fixed transmission power of speed, and according to the code element of speed transmission except that above-mentioned, in addition, with transmitted power corresponding to data rate, send pilot frequency code element and TPC (power control signal) code element with data, and do not change its position.
Thereby, can prevent to produce one by one pulse, suppress unnecessary line spectrum.And, even do not provide under the situation of the state of data, also can suppress to cause line spectrum by preventing that producing irregular pulse dashes by periodic signal in continuous appearance.
Figure 10 is according to the travelling carriage of the cdma communication system of the 3rd embodiment and the allocation plan of base station.Among Figure 10, frame counter 3116,3126 and sign indicating number type storage area 3115,3215 in structure shown in Figure 4, have been increased.
These frame counters 3116,3216 are used for sending the pilot frequency code element of first time slot at random with transmitted power identical when sending beginning and the frame of TPC (power control signal) code element (sending control information) is counted, and differentiate it and belong to which frame in the superframe.Frame counter 3216 in the base station works alone.On the other hand, the frame frame counter 3116 in the travelling carriage obtains the synchronous of synchronous retainer 112, and according to synchronizing signal work.Therefore, the frame counter 3216 of it and base station is synchronous.
In addition, the structure of the sign indicating number type storage area of the sign indicating number type storage area 3115 of mobile station side and base station side is identical.Even whether sign indicating number type storage area 3115,3215 storage first time slot in memory uses specific form under the consecutive identical situation of speed.Here, specific format partly is the signal format under the situation that sends control information with transmitted power transmission identical when sending beginning.
Extending controller 1101, level controller 1113 and level controller 1114 are according to the output control format of sign indicating number type storage area 3115.
In addition, the synchronous retainer 1212 of base station side is built into to produce according to the output of sign indicating number type storage area 3215 and receives regularly, and receives the reverse link signal of CDMA demodulator 1211 exactly.The structure of all other parts is identical with the structure of first embodiment.Therefore, omitted description of them here.
In first embodiment, if owing on all first time slots, use specific format, and make no voice status continuous, then there is the situation of blank signal frame by frame that produces.Therefore, in the 3rd embodiment, only under the situation that transmission rate changes, in first time slot, use specific form.
Yet, if hypothesis transmission rate when signal rate changes is incorrect, continue to keep this state, up to speed change next time.Therefore, even signal rate does not change, first time slot in particular frame also can use specific format.That is, the transmitted power when can be applicable to send beginning sends sending control information of first time slot at random.The sign indicating number type of one the superframe of being made up of as a unit a plurality of frames as above-mentioned sign indicating number type, and is used at random sign indicating number type, wherein, superframe is used as one-period.Thereby, can be suppressed at and have frame by frame component at interval when occurring the phase same rate continuously among first embodiment.
Below, with reference to Figure 11 signal format is described, wherein a plurality of time slots are defined as a frame, and suppose that the transmission rate in the frame fixes.Shown in Figure 11 A, under the high situation of the speed that sends data, only in first time slot, send pilot frequency code element 3001, TPC code element 3002 and data symbols 3003 with identical transmitted power.In this case, on second time slot and later time slot, send pilot frequency code element 3011, TPC code element 3012 and data symbols 3013 with transmitted power identical shown in Figure 11 B.In addition,, then shown in Figure 11 C, send pilot frequency code element 3021 and TPC code element 3022, and to make the transmitted power of data symbols 3023 be zero with transmitted power identical when sending beginning if data are not provided.
On the other hand, shown in Figure 11 D, on second time slot that data are not provided and later time slot, shown in Figure 11 A, on identical position with than sending pilot frequency code element 3031 and TPC3032 less than the transmitted power shown in Figure 11 A.Moreover, as mentioned above, after having sent TPC, send glitch 3033 with identical transmitted power.
In addition,, then shown in Figure 11 E, send the pilot frequency code element 3041 and the TPC code element 3042 of first time slot, send data symbols 3043 with little transmitted power, and do not prolong the time span of code element with transmitted power identical when sending beginning if data rate is low.
In addition, if data rate is low, then shown in Figure 11 F, can send pilot frequency code element 3061, TPC code element 3062 and data symbols 3063 with identical transmitted power with the transmission beginning.In this case, because data are less, so just finish to send in the centre.
Moreover, if data rate is low, on second time slot and later time slot, shown in Figure 11 G, send pilot frequency code element 3051, TPC code element 3052 and data symbols 3053 with the identical rate of passing on Gong, make the Baud Length sum equal slot length, wherein can regulate transmitted power, make the quality of data symbols 3053 be equal to the quality of data symbols 3003.
Below with reference to Figure 12 entire frame is described.Shown in Figure 12 A, because data rate changes when moving on to second frame of no speech range from first frame 3001 that speech range is arranged, so first time slot of second frame is used specific form.
Because when not change of data rate when second frame 3002 moves on to the 3rd frame 3003, so first time slot of the 3rd frame does not use specific form.Therefore, even do not providing under the data conditions, sending control information also to prevent to produce the signal of pulse type.Though do not change at data rate when the 3rd frame 3003 moves on to the 4th frame 3004, first time slot of the 4th frame also can use specific format.Thereby, even speed gets the wrong sow by the ear, also can proofread and correct.
Owing to changed at data rate when the 4th frame 3004 moves on to the 5th frame 3005, so first time slot of the 5th frame has used specific format.In addition, shown in Figure 12 B, occurring continuously under the situation of no voice, on first time slot of each frame, the transmitted power when beginning can be used for sending is transmitted at random and is sent control information.Therefore, even speed gets the wrong sow by the ear, also can proofread and correct.
(embodiment 4)
In the 4th embodiment, such a case is described, promptly, pilot frequency code element and TPC (power control signal) code element being sent on the fixing position, send code element except that above-mentioned according to speed, in addition with the irrelevant fixed transmission power of speed, on second time slot and later time slot, with transmitted power, send pilot frequency code element and TPC (power control signal) code element with data, and do not change its position corresponding to data rate.
Thus, can prevent from each time slot, to produce pulse.In addition, can send pilot frequency code element and TPC,, also can suppress periodic signal and cause line spectrum frame by frame by preventing that producing irregular pulse dashes even occur the state of free of data continuously with satisfied quality.
Figure 13 is according to the travelling carriage of the cdma communication system of the 4th embodiment and the allocation plan of base station.Among Figure 13, in structure shown in Figure 7, increased frame counter 4116,4216 and sign indicating number type storage area 4115,4215 as shown in figure 10.Frame counter 4116,4216 is identical with the 3rd embodiment with sign indicating number type storage area 4115,4215.
Below with reference to Figure 14 signal format is described.In the 4th embodiment,, then shown in Figure 14 A, only in first time slot, send pilot frequency code element 4011, TPC code element 4012 and data symbols 4013 with identical transmitted power if send the data rate height.In this case, as shown in Figure 14B, after reaching, second time slot on the time slot, sends pilot frequency code element 4001, TPC code element 4002 and data symbols 4003 with identical transmitted power.
In addition,, then shown in Figure 14 C, send the pilot frequency code element 4021 and the TPC code element 4022 of first time slot, and to make the transmitted power of data symbols 4023 be zero with transmitted power identical when sending beginning if the transmission data are not provided.On the other hand, if data are not provided, then after reaching, second time slot on the time slot, pilot frequency code element 4031 and TPC code element 4032 are expanded to whole time slot shown in Figure 14 D, to send them less than the transmitted power under the situation shown in Figure 14 A.
In addition,, then shown in Figure 14 E, send the pilot frequency code element 4041 and the TPC code element 4042 of first time slot, at this moment also send data symbols 4043, do not prolong the time span of code element with little transmitted power with transmitted power identical when sending beginning if data rate is low.Thereby, make the identical in quality of the quality of data symbols 4043 and data symbols 4013.
In addition, if data rate is low, also shown in Figure 14 F, sends pilot frequency code element 4061 and TPC code element 4062 with power identical when sending beginning, and can send data symbols 4063 with identical transmitted power.In this case, because data are less, can finish in the centre to send.Thereby, the quality of data symbols 4063 and data symbols 4013 identical in quality.
In addition, if data rate is low, and for example shown in Figure 14 G, after reaching, second time slot sends pilot frequency code element 4051, TPC signal 4052 or data symbols 4053 with identical transmitted power on the time slot, and Baud Length handled, make these length sums equal slot length.And, regulate transmitted power, make the quality of data symbols 4053 be equal to the quality of data symbols 4013.
Below with reference to Figure 15 entire frame is described.Shown in Figure 15 A, because data rate changes when first frame 4001 that speech range is arranged moves on to second frame 4002 of no speech range, so first time slot of second frame use specific format.Owing to do not change at data rate when second frame 4002 moves on to the 3rd frame 4003, so first time slot of the 3rd frame does not use specific format.Therefore, even do not providing under the data conditions, sending control information also to prevent to produce pulse-like signal.
Though when data rate when the 3rd frame 4003 moves on to the 4th frame 4004 does not change, first time slot of the 4th frame also can use specific format.Thereby, even speed gets the wrong sow by the ear, also can proofread and correct.Because data rate has changed when the 4th frame 4004 moves on to the 5th frame 4005, so first time slot of the 5th frame has used specific format.In addition, shown in Figure 15 B, occurring continuously under the situation of no voice, on first time slot of every frame, transmitting randomly and send control information can be used for sending transmitted power when beginning.Therefore, even speed gets the wrong sow by the ear, also can proofread and correct.
Though described the processing procedure behind second time slot of transmit frame above, also can carry out following processing to first time slot.
At first, extending controller is judged the speed that sends data.If judged result is not send data, shown in Figure 16 A, send control information and special code type data with identical transmitted power transmission.
In addition, when the transmission data rate is low, identical data are repeated with sending control information to send as sending data.For example, shown in Figure 16 B, when data rate is a half, identical data symbols repeats to send twice.At this moment, can switch the polarity of data symbols, for example switching from 0,1 is 1,0 at every turn.
Carried out after the above-mentioned processing, with the blank parts transmission special code type data of time slot, receiver side is guaranteed to mate with this yard type.Thereby, can easily judge data are not provided in received frame.Therefore, repeat identical transmission data, it is low that receiver side can be judged the transmission data rate.Its reason is if send the data rate height, and data just send at random, so repeat to send identical data by data rate regularly when low, can clearly distinguish the height of data rate and low.In addition, except said method, send sending control information of first time slot to the transmission data rate that is provided and also can obtain similar effect.
(embodiment 5)
In the 5th embodiment, such a case is described, that is, when data being carried out sign indicating number branch and multiple connection, send pilot frequency code element and TPC (power control signal) code element.Thus, when reducing power, improve the rate of spread of pilot frequency code element and TPC code element.Thereby, can avoid switch transmitted power when sending pilot frequency code element and TPC code element.
Figure 17 is according to the travelling carriage of the cdma communication system of the 5th embodiment and the allocation plan of base station.In Figure 17, be provided with multiplexer 5103,5203, replace the time division multiplexing device 2103,2203 in the structure shown in Figure 7.Because other structure is identical with structure shown in Figure 7, so omitted description of them.
The as above transmission processing procedure of the travelling carriage of the cdma communication system of formation according to the 5th embodiment is described below.Extending controller 1101 controls send the expansion of data 1100.That is,, become data processing amplitude little and Baud Length is long, if the transmission rate height becomes data processing the big and Baud Length of amplitude to lack if it is low to send data rate.Simultaneously, extending controller 2113,2114 expands to whole sending time slots to pilot frequency code element 2102 and power control signal 1107 with sending data.
The CDMA modulation is carried out in the output of the above-mentioned extending controller 1101,2113,2114 of multiplexer 5103 multiple connections, the output after 1104 pairs of multiple connections of CDMA modulator, and is amplified by transmit amplifier 1105, sends by antenna 1106 then.Base station side is when the output that sends extending controller 1201 mentioned above, pilot frequency code element 1202 and TPC1207, they are carried out multiple connection, the CDMA modulation is carried out in output after 1204 pairs of multiple connections of CDMA modulator, and is amplified by transmit amplifier 1205, then by antenna 1206 outputs.
Below with reference to Figure 18 to 21 signal format is described.Here, a plurality of time slots are defined as a frame, and the hypothesis transmission rate is at a frame internal fixation.
In this embodiment, when data being carried out sign indicating number branch and multiple connection, send pilot frequency code element and TPC (power control signal) code element.That is, as shown in figure 18, with the reducing and improve of power, pilot frequency code element and TPC code element be put on the data with the rate of spread.
If the transmission data are not provided, shown in Figure 18 A, with sign indicating number 0 expansion pilot frequency code element 5001 and TPC code element with big rate of spread.Thus, can send pilot frequency code element 5001 and TPC code element continuously.Thereby, the transmitting power of pilot frequency code element is diminished, can prevent from periodically to send pilot frequency code element.
On the other hand, shown in Figure 18 B, if data are provided, then multiple connection is with the pilot frequency code element 5001 of sign indicating number 0 expansion with sign indicating number 1 expanded data 5002.In addition, under the situation shown in Figure 18 A and Figure 18 B, suppose free on the power of pilot frequency code element all immobilize.
In the present embodiment, the phase place of pilot frequency code element and TPC code element can each code element change.Promptly as shown in figure 19, according to predetermined sign indicating number type the phase place of pilot frequency code element 5011 to 5014 is changed between a and b.Therefore, the phase place of pilot frequency code element is changed, can prolong the cycle of duplication code type by setting.Therefore, the transmitted power of pilot frequency code element is diminished, can also prevent from periodically to send pilot frequency code element effectively simultaneously.
In addition, in the present embodiment, can change the power of pilot frequency code element and TPC code element in response to transmission rate.That is, when the transmission rate of data 5021 is low, shown in Figure 20 A, the power of pilot frequency code element 5001 is diminished, when the transmission rate of data 5002 is high, shown in Figure 20 B, increase the power of pilot frequency code element 5022.Thereby, under the high situation of transmission rate, can further improve quality of signals, can reduce total interference volume to system.
In addition, in the present embodiment, when pilot frequency code element that sends code division multiplexing all the time and TPC code element, pilot frequency code element can carry out time division multiplexing to data.That is, shown in Figure 21 A,, then send the pilot frequency code element and the TPC code element of code division multiplexing all the time if data are not provided.On the other hand, shown in Figure 21 B,, then the pilot frequency code element of expanding with the sign indicating number 1 of growth data 5031 is offered the stem of data if data are arranged.Therefore,, then can further improve line quality, reduce total interference volume, keep the quality of data simultaneously system if data are provided.In addition, because the transmitted power of pilot frequency code element can be done for a short time, be adversely affected so can prevent the surrounding devices that disturbed by cyclical signal.
In addition, because the processing procedure of base station is identical with the processing procedure of first embodiment, so can omit description to it.
For above-mentioned first to the 5th embodiment, can carry out various combinations and constitute the present invention them.
Can clearly be seen that from above, according to the present invention, even data rate is high and low sending, or do not provide under the transmission data conditions, because can be with uniform transmitted power transmission transmit frame, so can suppress the generation of specific period pulse, can prevent that the surrounding devices that disturbed by cyclical signal is adversely affected.
In addition,, also can make communicating control information and the Baud Length sum that sends data equal slot length even sending under the low situation of data rate, and with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent that the surrounding devices that disturbed by cyclical signal is adversely affected.
Send under the low situation of data rate, also can after the transmission of the transmission data of finishing first time slot, finish immediately to send.In this case, can suppress the generation of specific period pulse, thereby can prevent that the surrounding devices that disturbed by cyclical signal is adversely affected.
Not providing under the transmission data conditions, can expand to whole time slot sending control information and sending data, can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent that the surrounding devices that disturbed by cyclical signal is adversely affected.Owing to needn't send glitch, so can be suppressed to influence less to other user.
In addition, on second time slot and later time slot, can and send data control information and expand to the whole time slot that has, and can be with uniform transmitted power transmission transmit frame.Therefore, can suppress the generation of specific period pulse, thereby can prevent that the surrounding devices that disturbed by cyclical signal is adversely affected.
Only under the situation that transmission rate changes, the transmitted power transmission on the very first time of each frame when can be used for sending beginning sends control information, and under the situation that not have to change in transmission rate, transmits to send control information and send data with uniform transmitted power.Therefore, connecting under the situation that no voice status occurs, promptly, even do not providing under the transmission data conditions, also can prevent to produce blank signal frame by frame, thereby can suppress the generation of specific period pulse, prevent that the surrounding devices that disturbed by cyclical signal is adversely affected.
Because under situation about sending continuously with equal-wattage, the transmitted power when can be used for sending beginning is transmitted at random and is sent control information, so even when sending data and change transmission rate get the wrong sow by the ear also can error recovery state.
In addition, owing to can carry out a yard shape coupling at receiver side, so receiver side can easily be judged the transmission data rate at first time slot.
Claims (31)
1, a kind of cdma communication equipment is characterized in that, this communication equipment comprises
The speed judgment means is judged the transmission data rate at first time slot of transmit frame;
Level controller, by handling, make offer second time slot and thereafter the transmitted power that sends control information of each time slot stem equal and the transmitted power that sends data;
Dispensing device is used to respond described speed judgment means, sends treated described frame with uniform transmitted power.
2, cdma communication equipment as claimed in claim 1 is characterized in that, described level controller is provided with multiple devices, when the transmission data are not provided glitch is multiplexed on the transmit frame.
3, a kind of cdma communication equipment comprises:
The speed judgment means is judged to send data rate on first time slot of transmit frame;
The expansion control device, reaching formation second time slot thereafter, sending control information of each time slot expands to whole time slot together with sending data;
Dispensing device is used to respond described judged result, sends the frame of forming through the described time slot of expansion with even transmitted power.
4, cdma communication equipment as claimed in claim 3 is characterized in that, when the transmission data were not provided, described expansion control device expanded to whole time slot sending control information.
5, cdma communication equipment as claimed in claim 3, it is characterized in that, when the transmission data rate is low, described dispensing device is according to the judged result of described speed judgment means, send control information and send data in first slot transmission, and control, after the described transmission data of transmission, to cut off transmission immediately.
6, cdma communication equipment as claimed in claim 3 is characterized in that, also comprises:
Speed changes judgment means, judges whether send data rate changes;
Transmission control device, according to judged result, if speed changes, it sends the sending control information of first time slot of next frame with the transmitted power identical with the frame that is sending, and sends sending control information of next first time slot with transmitted power identical when sending beginning.
7, cdma communication equipment as claimed in claim 6 is characterized in that, when sending continuously with identical transmitted power, described transmission control device transmits the sending control information of first time slot of transmit frame at random.
8, cdma communication equipment as claimed in claim 1 is characterized in that, described sending control information comprises pilot frequency code element and power control signal.
9, cdma communication equipment as claimed in claim 1, it is characterized in that, according to judged result, if the transmission data are not provided, then send sending control information of first time slot and special code type data thereof with identical transmitted power, if it is low to send data rate, transmission sends control information and when sending data, repeats transmission and send data.
10, a kind of cdma communication equipment is characterized in that, this communication equipment comprises:
Multiple devices carries out multiple connection to sending control information and sending data, thus configuration frame;
Expanding unit sends control information and sends data with different sign indicating number expansions;
Dispensing device sends described treated frame.
11, cdma communication equipment as claimed in claim 1 is characterized in that, described multiple devices is used the sign indicating number type that is made of out of phase to constitute and sent control information.
12, cdma communication equipment as claimed in claim 10 is characterized in that, also comprises:
Transmission control device is controlled the transmitted power that sends control information in response to transmission rate.
13, cdma communication equipment as claimed in claim 10 is characterized in that, described multiple devices offers first time slot that sends data sending control information.
14, have a kind of travelling carriage of communication equipment, it is characterized in that, described equipment comprises:
The speed judgment means is judged the transmission data rate at first time slot of transmit frame;
Level controller, by handling, make offer each second time slot and thereafter the transmitted power that sends control information of each time slot stem equal to send the transmitted power of data;
Dispensing device is used to respond described speed judgment means, sends treated described frame with uniform transmitted power.
15, have a kind of base station of communication equipment, it is characterized in that, described equipment comprises:
The speed judgment means is judged the transmission data rate at first time slot of transmit frame;
Level controller, by handling, make offer each second time slot and thereafter the transmitted power that sends control information of each time slot stem equal to send the transmitted power of data;
Dispensing device is used to respond described speed judgment means.Send treated described frame with uniform transmitted power.
16, a kind of cdma communication system is characterized in that, comprises:
Has travelling carriage according to the cdma communication equipment of claim 14;
Has base station according to the cdma communication equipment of claim 15.
17, a kind of cdma communication method comprises the following step:
Utilize first time slot of transmit frame to judge the speed that sends data;
In response to described judged result, reaching thereafter with uniform transmitted power at second time slot, each slot transmission sends control information and sends data.
18, cdma communication method as claimed in claim 17, it is characterized in that, according to judged result, if the transmission data are not provided, then only transmission sends control information, and second time slot and thereafter each time slot send sending control information of will sending with the transmitted power littler than the transmitted power of first time slot, send glitch with the transmitted power identical with described transmitted power.
19, cdma communication method as claimed in claim 17, it is characterized in that, according to judged result, if it is low to send data rate, then send control information and send data in first slot transmission, and also send them, and make the Baud Length sum that sends control information and send data equal slot length at second time slot and each time slot of back.
20, cdma communication method as claimed in claim 17 is characterized in that, according to judged result, if it is low to send data rate, on first time slot, send control information and send data, after the transmission of finishing described transmission data, finish immediately to send with the transmission of identical transmitted power.
21, cdma communication method as claimed in claim 17 is characterized in that, according to judged result, if the transmission data are not provided, then on first time slot, only transmit sending control information, on second time slot and later time slot, expand on all time slots sending control information, so that send.
22, cdma communication method as claimed in claim 17, it is characterized in that, according to judged result, if it is low to send data rate, then transmission sends control information and sends data on first time slot, and reaching thereafter at second time slot, each time slot expands to whole time slot transmission sending control information and sending data.
23, cdma communication method as claimed in claim 17 is characterized in that, according to judged result, if the transmission data are not provided, then sends control information and special code type data with identical transmitted power transmission at first time slot.
24, cdma communication method as claimed in claim 17 is characterized in that, according to judged result, if it is low to send data rate, then sends control information and the special pattern data in first slot transmission, and identical transmission data are sent in the recurrence of laying equal stress on.
25, cdma communication method as claimed in claim 17, it is characterized in that, judge whether send data rate changes, if do not change, send the sending control information of first time slot of next frame with the transmitted power identical with the frame that is sending, if changed, then send sending control information of next first time slot with transmitted power identical when sending beginning.
26, cdma communication method as claimed in claim 25 is characterized in that, when sending continuously with identical transmitted power, transmits the sending control information of first time slot of transmit frame at random with transmitted power identical when sending beginning.
27, cdma communication method as claimed in claim 17 is characterized in that, described sending control information comprises pilot frequency code element and power control signal.
28, a kind of cdma communication method is characterized in that, comprises the following step:
Carry out multiple connection to sending control information and sending data, thus configuration frame;
Send control information and send data with different sign indicating number expansions;
Send described treated frame.
29, cdma communication method as claimed in claim 28 is characterized in that, the sign indicating number type formation that constitutes in order to out of phase sends control information.
30, cdma communication method as claimed in claim 28 is characterized in that, controls the transmitted power that sends control information in response to transmission rate.
31, cdma communication method as claimed in claim 28 is characterized in that, offers first time slot that sends data sending control information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98108092 CN1206319A (en) | 1997-07-19 | 1998-05-07 | CDMA communication system and apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP209638/97 | 1997-07-19 | ||
| CN 98108092 CN1206319A (en) | 1997-07-19 | 1998-05-07 | CDMA communication system and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1206319A true CN1206319A (en) | 1999-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98108092 Pending CN1206319A (en) | 1997-07-19 | 1998-05-07 | CDMA communication system and apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN1206319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953595B (en) * | 1999-10-22 | 2011-09-07 | 株式会社Ntt都科摩 | Transmission method of downlink pilot channel, and CDMA mobile communication system |
-
1998
- 1998-05-07 CN CN 98108092 patent/CN1206319A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953595B (en) * | 1999-10-22 | 2011-09-07 | 株式会社Ntt都科摩 | Transmission method of downlink pilot channel, and CDMA mobile communication system |
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