CN101466136B - Method and device for controlling signal power of high speed packet access system - Google Patents
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Abstract
The invention discloses a signal power control method in a high-speed package access system, which relates to the signal power control technique in order to solve the problem that the signal power is higher under certain conditions in the high-speed package access system. The technical proposal adopted by the method comprises the following steps: a corresponding sign position in system frames can not transmit modulation signs when control signaling does not need to be transmitted. The invention also discloses a device used for realizing the method at the same time. The method and the device reduce the launching power, reduce the interference of the launching signal to the system, and improve the system capacity without changing the time slot structure of the current channel. The method and the device only need to regulate the signal emission mechanism of UE and a node B, thus the realization is simple.
Description
Technical field
The present invention relates to signal power control technology in the wireless system, relate to high-speed packet or rather and insert signal power control method and device in (HSPA, High Speed Packet Access) system.
Background technology
HSPA is the wireless side up link enhancement techniques that the 3GPP protocol architecture is introduced in the R6 version.HSPA by adopt many yards transmission, physical layer mix re-transmission (HARQ) automatically, based on the key technologies such as fast dispatch of Node B, greatly improve single sub-district maximal uplink throughput, strengthened the data service bearing capacity and the availability of frequency spectrum of up link greatly.
In the HSUPA technology, two kinds of transmission meanss are arranged: scheduled transmission and non-scheduled transmission.For scheduled transmission, up use strengthens the data that uplink physical channel E-PUCH transmission strengthens dedicated channel (E-DCH, EnhancedDedicated Channel) and up-enhancing control channel E-UCCH; The up enhancing absolute grant channel of descending use E-AGCH and enhancing ascending HARQ answering indication signal channel E-HICH send scheduling of resource control information and feedback information to UE.Fig. 1 is signaling process figure during scheduled transmission in the HSUPA system, as shown in Figure 1, before the initial transmission, ascending control channel E-RUCCH sends dispatch request to base station node B to UE by strengthening at random, and Node B determines whether to allow UE to send uplink strengthening data according to current scheduling situation.When determining to send, then information such as relevant physical resource such as time slot, code channel, power are placed on E-AGCH and go up notice UE, UE uses corresponding physical resource to send uplink strengthening data subsequently.Node B receives data and carries out demodulating and decoding, obtains ACK/NACK information, and feeds back to UE by E-HICH.
Wherein, E-AGCH is descending physical channel, has carried the configuration information such as physical resource of base station and to the through-put power control TPC and the simultaneous bias SS control messages of E-PUCH channel.3GPP agreement regulation during the E-PUCH transmission, carries an E-UCCH at least on it, transmission after E-UCCH and the E-DCH data multiplex.Wherein, E-DCH has carried uplink strengthening data, and the E-UCCH carrying is the relevant signaling of HARQ.Follow the transmission of E-UCCH, have the position of a modulation symbol to be used to transmit the TPC power control command simultaneously; This TPC order is used for controlling the transmitted power adjustment of E-AGCH channel for scheduled transmission.Can transmit a plurality of E-UCCH and TPC in the TTI of an E-PUCH, number is determined by the indication of the E-UCCH number on the E-AGCH (ENI, E-UCCH Number Indicator) message.
For non-scheduled transmission, because the downlink physical resource is distributed by service wireless network controller SRNC, do not need to use E-AGCH, do not need corresponding TPC command word, that is to say that the TPC order of the last carrying of E-PUCH is if be not used in the power control of other channel beyond the E-AGCH channel, then be insignificant, directly throw away this TPC symbol at receiving terminal.And present terminal is that E-DCH data symbol, TPC symbol and E-UCCH data symbol is multiplexing, more above-mentioned data symbol is carried out band spectrum modulation, obtains the chip data; Afterwards by all data symbols are carried out unified power setting.And for the E-PUCH of non-scheduled transmission, if the TPC symbol that inserts is the symbol of a QPSK modulation, then its transmitted power is consistent with other data symbol; Like this, just caused unnecessary power overhead and uplink interference, the E-UCCH number of transmission is many more, and power dissipation is many more, simultaneously up link is brought unnecessary interference.The up link of cdma system is subjected to the obvious effect of interference level, and this has influenced power system capacity.
Similarly, in up, disposed E-PUCH and when not disposing DPCH, descending DPCH goes up on the position of carrying TPC symbol and/or SS symbol, do not need to send at up TPC and/or SS control command, if and still on corresponding symbol, insert the QPSK modulation symbol, to cause the power dissipation of base station node B, also can cause interference simultaneously other base stations.
Summary of the invention
In view of this, main purpose of the present invention is to provide signal power control method and device in a kind of high-speed packet access system, with the whole transmitted power and the signal interference of signal in the reduction system.
For achieving the above object, technical scheme of the present invention is achieved in that
Signal power control method in a kind of high-speed packet access system comprises:
When need not to transmit the control signaling, the corresponding symbol position does not send modulation symbol in the system-frame.
Wherein, described when need not to transmit the control signaling in the system-frame corresponding symbol position do not send modulation symbol, be specially:
When not needing to carry the through-put power control TPC instruction at down channel in strengthening uplink physical channel E-PUCH, the correspondence position of carrying TPC command character does not send the constellation modulation symbol on E-PUCH.
Wherein, described when need not to transmit the control signaling in the system-frame corresponding symbol position do not send modulation symbol, be specially:
When in uplink special physical channel DPCH, not needing to carry the through-put power control TPC instruction at down channel, on the correspondence position of carrying TPC command character on the DPCH, do not send the constellation modulation symbol.
Wherein, described when need not to transmit the control signaling in the system-frame corresponding symbol position do not send modulation symbol, be specially:
When in downward special physical channel DPCH, not needing to carry, on the correspondence position of the described command character of carrying on the DPCH, do not send the constellation modulation symbol at the through-put power control TPC of uplink special physical channel and/or Synchronization Control SS instruction.
Wherein, described corresponding character position in the carrying control command does not send the constellation modulated data symbol, is specially:
The transmitting apparatus of described channel does not insert any constellation modulation symbol and the stet position on the corresponding character position of carrying control command on the described channel, or the full remainder of inserting the modulation of non-constellation is according to symbol.
Signal power control device in a kind of high-speed packet access system comprises:
TPC instructs dispensing unit, be used for when strengthening uplink physical channel E-PUCH and do not need to carry through-put power control TPC instruction at down channel, the correspondence position of carrying TPC command character does not dispose any constellation modulation symbol on E-PUCH, or the full remainder that disposes non-constellation modulation is according to symbol; And
The upward signal transmitting element is used for the configuration according to TPC instruction dispensing unit, does not send any data symbol on the corresponding character position of carrying TPC instruction on the E-PUCH, perhaps sends the full remainder according to symbol.
Signal power control device in a kind of high-speed packet access system comprises:
TPC instructs dispensing unit, be used for when uplink special physical channel DPCH does not need to carry through-put power control TPC instruction at down channel, the correspondence position of carrying TPC command character does not dispose any constellation modulation symbol on DPCH, or the full remainder that disposes non-constellation modulation is according to symbol; And
The upward signal transmitting element is used for the configuration according to TPC instruction dispensing unit, does not send any data symbol on the corresponding character position of up DPCH carrying TPC instruction, perhaps sends the full remainder according to symbol.
Signal power control device in a kind of high-speed packet access system comprises:
TPC and/or SS instruction dispensing unit, be used for when downward special physical channel DPCH does not need to carry at the through-put power control TPC of uplink special physical channel and/or Synchronization Control SS instruction, the position of carrying TPC symbol and/or SS symbol does not dispose any constellation modulation symbol on descending DPCH, or the full remainder that disposes non-constellation modulation is according to symbol; And
The downstream signal transmitting element is used for the configuration according to TPC and SS instruction dispensing unit, and the position of carrying TPC symbol and/or SS symbol does not send any data symbol on descending DPCH, perhaps sends the full remainder according to symbol.
During non-scheduling, the downlink physical resource is distributed by service wireless network controller SRNC, strengthen uplink physical channel E-PUCH under some application scenarios, during such as the transmission power control instruction TPC that do not need to carry at any down channel, need not to transmit the TPC command character, the present invention is directed to this feature, the full remainder that the sign field that should carry TPC instruction in E-PUCH is not launched any data symbol or sent non-constellation modulation is according to symbol; When in up DPCH, not needing to carry the through-put power control TPC instruction at down channel, on the correspondence position of carrying TPC command character on the DPCH, do not send the constellation modulation symbol; In up, disposed E-PUCH and when not disposing DPCH, descending DPCH goes up on the position of carrying TPC symbol and SS symbol and need not to send at up TPC and SS control command, and the full remainder that the sign field that should carry TPC and/or SS instruction in descending DPCH is not launched any data symbol or sent non-constellation modulation is according to symbol; Greatly reduced the transmitting power of TPC and SS character position among the descending DPCH thus.The present invention does not need to change the structure of time slot of existing channel, and has reduced signal transmission power, has reduced the interference of signal to system, has promoted power system capacity.The present invention only gets final product the signal transmitter system adjustment of UE and Node B, realizes simple.
Description of drawings
Fig. 1 is signaling process figure during scheduled transmission in the HSUPA system;
Fig. 2 is the flow chart of ascending power control method in the high-speed packet access system of the present invention;
Fig. 3 is another flow chart of ascending power control method in the high-speed packet access system of the present invention;
Fig. 4 is the flow chart of method for controlling downlink power in the high-speed packet access system of the present invention;
Fig. 5 is the composition structural representation of uplink power control device in the high-speed packet access system of the present invention;
Fig. 6 is another composition structural representation of uplink power control device in the high-speed packet access system of the present invention;
Fig. 7 is the composition structural representation of descending power control device in the high-speed packet access system of the present invention.
Embodiment
Core concept of the present invention is: control under the situation of TPC instruction in the through-put power that does not need to send at down channel, can reduce the transmitting power of the TPC symbol that carries among the E-PUCH as far as possible.At present in the HSUPA system during non-scheduling, the downlink physical resource is distributed by service wireless network controller SRNC, strengthen uplink physical channel E-PUCH under some application scenarios, during such as the transmission power control instruction TPC that do not need to carry at any down channel, need not to transmit the TPC command character; When in up DPCH, not needing to carry the through-put power control TPC instruction at down channel, on the correspondence position of carrying TPC command character on the up DPCH, need not to send the TPC command character; Disposed E-PUCH and when not disposing DPCH in up, descending DPCH goes up on the position of carrying TPC symbol and/or SS symbol and need not to send at up TPC and/or SS control command.The present invention is directed to this feature, the sign field that should carry TPC instruction in E-PUCH is not launched any signal, or the full remainder that sends non-constellation modulation is according to symbol; When not needing to carry the through-put power control TPC instruction at down channel in up DPCH, the correspondence position of carrying TPC command character is not launched any data symbol on up DPCH, and the full remainder that perhaps sends non-constellation modulation is according to symbol; The sign field that should carry TPC and/or SS instruction in descending DPCH is not launched any data symbol, and the full remainder that perhaps sends non-constellation modulation is according to symbol; Thereby integral body has reduced signal transmission power, has reduced the interference of signal to system, has promoted power system capacity.Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.
Fig. 2 is the flow chart of ascending power control method in the high-speed packet access system of the present invention, and as shown in Figure 2, ascending power control method may further comprise the steps in the high-speed packet access system of the present invention:
Step 201: when in strengthening uplink physical channel E-PUCH, not needing to carry the through-put power control TPC instruction at down channel, subscriber terminal equipment UE is on the corresponding character position of carrying TPC instruction on the E-PUCH, do not insert any constellation modulation symbol, the stet position, or the full remainder of inserting non-constellation modulation is not changed structure of time slot according to symbol.Divide timing in non-scheduled transmission and downlink physical resource by SRNC, do not need to send scheduling downlink resource E-AGCH and can carry out the transmission of E-PUCH, if E-PUCH is not used in the through-put power control TPC instruction of other down channel of carrying, the TPC symbol that then carries among the E-PUCH is without any effect.Under the situation that does not reduce E-PUCH upward signal launch mass, this step reaches the purpose that reduces whole upward signal power by the transmitting power that reduces the TPC symbol.Also promptly, in radio frames, should insert in the ascending time slot on the character position of TPC instruction and not insert any constellation modulation symbol, or the full remainder of inserting non-constellation modulation is according to symbol.
Step 202:UE does not send any data symbol on the correspondence position of carrying TPC command character on the E-PUCH, perhaps send the full remainder according to symbol.UE does not modulate for the TPC data when upstream data to be sent is modulated, and is about to it and vacates, and like this, when sending, does not launch any symbol on TPC corresponding symbol position, and the full remainder that perhaps sends non-constellation modulation is according to symbol; After processing procedures such as spread spectrum afterwards, E-PUCH power setting, pulse shaping, carrier modulation, the transmitted power on the chip position of TPC correspondence will reduce greatly.Like this, for other data among the E-PUCH, transmitting power meets up launch requirements, and for the TPC data segment, transmitting power obviously reduces, and this has reduced the overall power of E-PUCH undoubtedly, reduced the interference of upward signal, promoted power system capacity system.The present invention handles at the base band state of signal and gets final product, and realizes simple.
Fig. 3 is another flow chart of ascending power control method in the high-speed packet access system of the present invention, and as shown in Figure 3, ascending power control method may further comprise the steps in the high-speed packet access system of the present invention:
Step 301: when in up DPCH, not needing to carry the TPC instruction at down channel, the correspondence position of carrying TPC command character does not insert any constellation modulation symbol on DPCH, the stet position, or the full remainder of inserting non-constellation modulation is not changed structure of time slot according to symbol.
Step 302:UE does not send any data symbol on the correspondence position of carrying TPC command character on the up DPCH, perhaps send the full remainder according to symbol.
Fig. 4 is the flow chart of method for controlling downlink power in the high-speed packet access system of the present invention, and as shown in Figure 4, method for controlling downlink power may further comprise the steps in the high-speed packet access system of the present invention:
Step 401: in up, disposed E-PUCH and when not disposing DPCH, do not need to carry TPC and/or SS instruction among the descending DPCH at up DPCH, descending DPCH goes up on the position of carrying TPC symbol and/or SS symbol, do not insert any constellation modulation symbol, the stet position, or the full remainder of inserting non-constellation modulation is not changed structure of time slot according to symbol.Step 401 is identical with the principle of abovementioned steps 201.
The full remainder that step 402:Node B carries TPC and/or SS symbol on DPCH position does not send the constellation modulation symbol or sends non-constellation modulation is according to symbol.Node B launches according to the configuration of step 401, is not launching any symbol on carrying TPC and/or the SS character position on the DPCH, and the full remainder that perhaps sends non-constellation modulation is according to symbol.Like this, for other data among the DPCH, transmitting power meets launch requirements, and for TPC and/or SS data segment, transmitting power obviously reduces, and this has reduced the overall power of downlink undoubtedly, reduced the interference of downstream signal, promoted power system capacity system.The present invention handles at the base band state of signal and gets final product, and realizes simple.
Poewr control method of the present invention is applicable to systems such as TDD HSPA.
Fig. 5 is the composition structural representation of uplink power control device in the high-speed packet access system of the present invention, as shown in Figure 5, uplink power control device comprises in the HSUPA of the present invention system: TPC instruction dispensing unit 50 and upward signal transmitting element 51, wherein, TPC instruction dispensing unit 50 is used for when strengthening uplink physical channel E-PUCH and do not need to carry through-put power control TPC instruction at down channel, on the correspondence position of carrying TPC command character on the E-PUCH, do not insert any constellation modulation symbol, or the full remainder of inserting non-constellation modulation is according to symbol.Can reach the purpose that reduces whole upward signal power by the transmitting power that reduces the TPC symbol, TPC instruction dispensing unit 50 should insert the TPC instruction in ascending time slot character position does not dispose any constellation modulation symbol, or the full remainder that disposes non-constellation modulation is according to symbol.Upward signal transmitting element 51 is used for not sending any data symbol on the corresponding character position of carrying TPC instruction on the E-PUCH according to the configuration of TPC instruction dispensing unit 50, and the full remainder that perhaps sends non-constellation modulation is according to symbol.
Fig. 6 is another composition structural representation of uplink power control device in the high-speed packet access system of the present invention, as shown in Figure 6, uplink power control device comprises in the high-speed packet access system of the present invention: TPC instruction dispensing unit 60 and upward signal transmitting element 61, wherein, TPC instruction dispensing unit 60 is used for when uplink special physical channel DPCH does not need to carry through-put power control TPC instruction at down channel, the correspondence position of carrying TPC command character does not dispose any constellation modulation symbol on DPCH, or the full remainder that disposes non-constellation modulation is according to symbol.Upward signal transmitting element 61 is used for the configuration according to TPC instruction dispensing unit 60, does not send any data symbol on the corresponding character position of up DPCH carrying TPC instruction, perhaps sends the full remainder according to symbol.
Fig. 7 is the composition structural representation of descending power control device in the high-speed packet access system of the present invention, as shown in Figure 7, the descending power control device comprises in the high-speed packet access system of the present invention: TPC and/or SS instruction dispensing unit 70 and downstream signal transmitting element 71, wherein, when TPC and/or SS instruction dispensing unit 70 is used for up no DPCH, do not need to carry TPC and/or SS instruction among the descending DPCH at up DPCH, the position of carrying TPC symbol and/or SS symbol does not dispose any constellation modulation symbol on descending DPCH, or the full remainder that disposes non-constellation modulation is according to symbol.Can reach the purpose that reduces whole downstream signal power by the transmitting power that reduces TPC among the descending DPCH and/or SS sign field.Downstream signal transmitting element 71 is used for the configuration according to TPC and/or SS instruction dispensing unit 70, and the position of carrying TPC symbol and/or SS symbol does not send any data symbol on descending DPCH, and the full remainder that perhaps sends non-constellation modulation is according to symbol.
It will be appreciated by those skilled in the art that above-mentioned each unit can realize described function by corresponding software, also can realize by corresponding circuit.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (7)
1. signal power control method in the high-speed packet access system is characterized in that this method comprises:
When need not to transmit the control signaling, the corresponding symbol position does not send the constellation modulation symbol in the system-frame,
Wherein, the transmitting apparatus of channel does not insert any constellation modulation symbol and the stet position on the corresponding character position of carrying control command on the channel, or the full remainder of inserting non-constellation modulation is not changed structure of time slot according to symbol.
2. method according to claim 1 is characterized in that, described when need not to transmit the control signaling in the system-frame corresponding symbol position do not send the constellation modulation symbol, be specially:
When not needing to carry the through-put power control TPC instruction at down channel in strengthening uplink physical channel E-PUCH, the correspondence position of carrying TPC command character does not send the constellation modulation symbol on E-PUCH.
3. method according to claim 1 is characterized in that, described when need not to transmit the control signaling in the system-frame corresponding symbol position do not send the constellation modulation symbol, be specially:
When in uplink special physical channel DPCH, not needing to carry the through-put power control TPC instruction at down channel, on the correspondence position of carrying TPC command character on the DPCH, do not send the constellation modulation symbol.
4. method according to claim 1 is characterized in that, described when need not to transmit the control signaling in the system-frame corresponding symbol position do not send the constellation modulation symbol, be specially:
When in downward special physical channel DPCH, not needing to carry, on the correspondence position of the described command character of carrying on the DPCH, do not send the constellation modulation symbol at the through-put power control TPC of uplink special physical channel and/or Synchronization Control SS instruction.
5. signal power control device in the high-speed packet access system is characterized in that this device comprises:
TPC instructs dispensing unit, be used for when strengthening uplink physical channel E-PUCH and do not need to carry through-put power control TPC instruction at down channel, the correspondence position of carrying TPC command character does not dispose any constellation modulation symbol on E-PUCH, or the full remainder that disposes non-constellation modulation is according to symbol; And
The upward signal transmitting element is used for the configuration according to TPC instruction dispensing unit, and the corresponding character position of carrying TPC instruction does not send any data symbol on E-PUCH, perhaps sends the full remainder according to symbol.
6. signal power control device in the high-speed packet access system is characterized in that this device comprises:
TPC instructs dispensing unit, be used for when uplink special physical channel DPCH does not need to carry through-put power control TPC instruction at down channel, the correspondence position of carrying TPC command character does not dispose any constellation modulation symbol on DPCH, or the full remainder that disposes non-constellation modulation is according to symbol; And
The upward signal transmitting element is used for the configuration according to TPC instruction dispensing unit, and the corresponding character position that instructs at up DPCH carrying TPC does not send any data symbol, perhaps sends the full remainder according to symbol.
7. signal power control device in the high-speed packet access system is characterized in that this device comprises:
TPC and/or SS instruction dispensing unit, be used for when downward special physical channel DPCH does not need to carry at the through-put power control TPC of uplink special physical channel and/or Synchronization Control SS instruction, the position of carrying TPC symbol and/or SS symbol does not dispose any constellation modulation symbol on descending DPCH, or the full remainder that disposes non-constellation modulation is according to symbol; And
The downstream signal transmitting element is used for the configuration according to TPC and/or SS instruction dispensing unit, and the position of carrying TPC symbol and/or SS symbol does not send any data symbol on descending DPCH, perhaps sends the full remainder according to symbol.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1716807A (en) * | 2001-08-10 | 2006-01-04 | 株式会社Ntt都科摩 | Radio communication system, communication terminal apparatus, base station apparatus, and transmission power control method |
| CN1754396A (en) * | 2003-04-23 | 2006-03-29 | 日本电气株式会社 | System and method for mobile communication |
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| CN1716807A (en) * | 2001-08-10 | 2006-01-04 | 株式会社Ntt都科摩 | Radio communication system, communication terminal apparatus, base station apparatus, and transmission power control method |
| CN1754396A (en) * | 2003-04-23 | 2006-03-29 | 日本电气株式会社 | System and method for mobile communication |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210531 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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