CN101394206A - Method for downlink power control synchronous signaling transmission - Google Patents
Method for downlink power control synchronous signaling transmission Download PDFInfo
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- CN101394206A CN101394206A CNA2007101541334A CN200710154133A CN101394206A CN 101394206 A CN101394206 A CN 101394206A CN A2007101541334 A CNA2007101541334 A CN A2007101541334A CN 200710154133 A CN200710154133 A CN 200710154133A CN 101394206 A CN101394206 A CN 101394206A
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Abstract
The invention discloses a method of transmitting a downstream power control synchronous signaling. The method comprises the following steps: a plurality of first time spread frequency code sequences are generated on a base station, the plurality of first time spread frequency code sequences are distributed to a plurality of groups, the plurality of groups of the first time spread frequency code frequencies are distributed respectively to a plurality of users; a base station generates a downstream TPC signaling and a downstream SS signaling of each user according to a E-PUCH or a HS-SICH of each user, and chooses the first time expand frequency code sequences from the groups of the first time expand frequency frequencies which are distributed to the user to conduct the expand frequency on the downstream TPC signaling and the downstream SS signaling of each user according to the state of the downstream TPC signaling and the downstream SS signaling of each user so as to generate a downstream power control synchronous signaling; the base station weights and stacks the downstream power control synchronous signaling of a plurality of users; the base station utilizes a predefined expand frequency code to conduct the second expand frequency on the downstream power control synchronous signaling which are weighted and stacked and transmits the downstream power control synchronous signaling which have the second expand frequency.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of method of downlink power control synchronous signaling transmission.
Background technology
High-speed packet inserts (High Speed Packet Access, abbreviation HSPA) further evolution and enhancing (claiming HSPA+ again) are that 3GPP RAN started a new research project in 2006, purpose is will reach in 5MHz and the same spectrum efficiency of Long Term Evolution (Long TermEvolution is called for short LTE).The major technique feature of HSPA+ comprises: multiple-input and multiple-output (Multi Input Multi Output, abbreviation MIMO), continuous packet data connects (Continuous Connectivity for Packet Data Users is called for short CPC) and high order modulation etc.
Insert (High Speed DownlinkPacket Access with the high speed downlink packet that is grouped into guiding, be called for short HSDPA)/high speed uplink packet access (High Speed UplinkAccess, be called for short HSUPA) though technology can greatly promote user's transmission rate, but potential transmission is interrupted, frequent connection termination and service quality (Quality of Service the is called for short QoS) mechanism that can not guarantee such as reconnect and also allow it lose chance with fixed broadband network (as DSL) competition.The continuous transmission of CPC grouped data just is being based on this and the solution that proposes.CPC has increased the packet data user that is in cell private channel (CELL_DCH) state, prolonged the time that the user is in the CELL_DCH state, reduce the data user and forwarded switching time of activated state from temporary transient non-activated state to, prevented that frequent disconnection is connected with rebuilding, avoid unnecessary spending and delay, prolonged the service time of battery of mobile phone.
In existing CPC agreement, the form of the Bearer Channel of power control word and synchronization character-physical layer Common Control Channel (Physical Layer Common Control Channel is called for short PLCCH) as shown in Figure 1.
In the CPC technology, PLCCH adopts the spreading factor channel code of (Spectrum Factor is called for short SF)=16, and the maximal bit capacity is 88 bits (bit), and the data field on training sequence (Midamble) sign indicating number both sides respectively has 44 bits.In Fig. 1, " UE1 " expression user's 1 through-put power control (TPC) and simultaneous bias (SS) word take 3bit, similarly " UE i " represents TPC and the SS word of user i, can hold 14 users at most, totally 3 * 14=42bit, remaining 2bit spare bits can be filled other information.
As can be seen from Figure 1, if each user wants to take from oneself TPC and SS word, must with bit informations all on the code channel all demodulation come out, and can carry 14 users' of transmission downlink power control and synchronizing information at most.
Summary of the invention
One or more problems in view of the above the invention provides a kind of method of new downlink power control synchronous signaling transmission.
Method according to downlink power control synchronous signaling transmission of the present invention, may further comprise the steps: the base station generates a plurality of first time of spread spectrum code sequence, with a plurality of first time spread spectrum code sequence be divided into a plurality of groups, and with a plurality of first time the spread spectrum code sequence group distribute to a plurality of users respectively; Descending power control signaling and down-going synchronous shift signaling that the base station generates each user according to each user's uplink enhanced physical channel or up shared information channel, and select spread spectrum code sequence for the first time that each user's descending power control signaling and down-going synchronous shift signaling are carried out spread spectrum first time in the spread spectrum code sequence group in the first time of distributing to it according to the state of each user's descending power control signaling and down-going synchronous shift signaling, with the generation downlink power control synchronous signaling; The base station with a plurality of users' downlink power control synchronous signaling weighted superposition together; And the base station utilizes predefined spreading code that weighted superposition downlink power control synchronous signaling is together carried out the spread spectrum second time, and the downlink power control synchronous signaling behind the second time spread spectrum is transmitted.
Wherein, for the first time the spread spectrum code sequence group comprise the first time spread spectrum code sequence quantity more than or equal to 1/2 of descending power control signaling and down-going synchronous shift signaling number of combinations, wherein, for the first time in the spread spectrum code sequence group the first time spread spectrum code sequence and negate after the spread spectrum code sequence first time form new code character, the sign indicating number sequence in the new code character is used to refer to the assembled state that descending power is controlled signaling and down-going synchronous shift signaling.
Wherein, predefined spreading code is an orthogonalization variable spread spectrum sign indicating number.The base station adopt semi-static mode with a plurality of first time the spread spectrum code sequence group distribute to a plurality of users respectively.Spread spectrum code sequence is the Hadamard sequence for the first time.The spread spectrum code sequence group comprises three spread spectrum code sequences for the first time at least for the first time.The base station by the QPSK modulation sequence together with a plurality of users' downlink power control synchronous signaling weighted superposition, and the weighted factor that is used for each user is directly proportional with each user's expectation power.Wherein, the base station is divided into two equal segments with each user's downlink power control synchronous signaling, and be filled in the both sides that strengthen the training sequence code in the mixed repeat requests affirmation of the dedicated channel indicating channel with two sections respectively, and make near 8 bits of training sequence code idle.
By the present invention, both can save the downgoing channelized codes resource, can guarantee that again subscriber equipment reaches receptivity preferably, thereby the synchronous power control word indication information that can make CPC user is by efficiently, receive correctly.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the form of the Bearer Channel PLCCH of power control word and synchronization character in the existing CPC agreement;
Fig. 2 is the flow chart according to the method for the downlink power control synchronous signaling transmission of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the E-HICH frame structure of the embodiment of the invention;
Fig. 4 is the schematic diagram according to the QPSK modulation of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
With reference to figure 2, the method according to the downlink power control synchronous signaling transmission of the embodiment of the invention is described.As shown in Figure 2, this transmission method may further comprise the steps: S202, the base station generates a plurality of first time of spread spectrum code sequence, with a plurality of first time spread spectrum code sequence be divided into a plurality of groups, and with a plurality of first time the spread spectrum code sequence group distribute to a plurality of users respectively; S204, descending power control signaling and down-going synchronous shift signaling that the base station generates each user according to each user's uplink enhanced physical channel or up shared information channel, and select spread spectrum code sequence for the first time that each user's descending power control signaling and down-going synchronous shift signaling are carried out spread spectrum first time in the spread spectrum code sequence group in the first time of distributing to it according to the state of each user's descending power control signaling and down-going synchronous shift signaling, with the generation downlink power control synchronous signaling; S206, the base station is with a plurality of users' downlink power control synchronous signaling weighted superposition together; And S208, the base station utilizes predefined spreading code that weighted superposition downlink power control synchronous signaling is together carried out the spread spectrum second time, and the downlink power control synchronous signaling behind the second time spread spectrum is transmitted.
Wherein, for the first time the spread spectrum code sequence group comprise the first time spread spectrum code sequence quantity more than or equal to 1/2 of descending power control signaling and down-going synchronous shift signaling number of combinations, wherein, for the first time in the spread spectrum code sequence group the first time spread spectrum code sequence and negate after the spread spectrum code sequence first time form new code character, the sign indicating number sequence in the new code character is used to refer to the assembled state that descending power is controlled signaling and down-going synchronous shift signaling.Wherein, predefined spreading code can be an orthogonalization variable spread spectrum sign indicating number.
Wherein, the spreading code set that the first time, spread spectrum code sequence was formed is one 80 * 80 a Hadamard matrix.Each row of Hadamard matrix is represented a Hadamard sequence, and sequence length is 80 bits, and Hadamard matrix has 80 different Hadamard sequences.
Wherein, adopt the channel code of SF=16 as shown in Figure 3, the mixed repeat requests of enhancing dedicated channel that the maximal bit capacity is 88 bits to confirm indicating channel (E-HICH) frame structure.Wherein, for reduce the first half data to Midamble sign indicating number and Midamble sign indicating number to the interference of latter half, 2 symbols (2 * 16 chips) that are available are placed between Midamble sign indicating number and the data.
Wherein, descending power control signaling (TPC) has two kinds of indications: raise or downward modulation.Synchronous shift signaling (SS) has 3 kinds of indications: rise, downward modulation or motionless.A kind of mode of the set after TPC and the SS combination is:
| Index | The TPC indication | The SS indication |
| 0 | ' downward modulation ' | ' downward modulation ' |
| 1 | ' rise ' | ' downward modulation ' |
| 2 | ' downward modulation ' | ' rise ' |
| 3 | ' rise ' | ' rise ' |
| 4 | ' downward modulation ' | ' motionless ' |
| 5 | ' rise ' | ' motionless ' |
Wherein, 80 Hadamard can be divided into the M group, each group has
Individual Hadamard sequence, distribute one group for each user, need at least 3 sign indicating number sequences in every group, these 3 sign indicating number sequences can be continuous, also can be discontinuous, 3 polarity positive sequence identification index 0～2, pole reversal sequence identifier index 3～5, perhaps other 3 sequence identifier in index 3～5 usefulness group.
Wherein, each user's each the TPC word and the state of SS word are mapped as a hada codeword sequence (polarity positive or anti-phase), sequence length is 80, be divided into two sections, be placed on respectively in the data on Midamble sign indicating number both sides, each 40 bit is near 8 bits of Midamble sign indicating number idle (each 4 bit of both sides).
Wherein, the Hadamard sequence is divided into the M group, every group of corresponding subscriber equipment.Packet mode adopts semi-static mode to distribute by Node B (base station) or radio network controller.Select identical spread spectrum code sequence for fear of neighbor cell, Node B or radio network controller are when this grouping of configuration, adopt the mode of the grouping scrambling distribution of different districts, the mode that scrambling distributes can adopt according to the cell system frame (SFN) of different basic Midamble sign indicating numbers, different districts number, is that the different user devices of neighbor cell is selected different sequences.
As shown in Figure 4, the QPSK modulation sequence corresponding to the TPC/SS signature sequence is designated as
(n＝1，2，...，Nk)。Wherein, M is a number of users, and this M user uses same channel code.Weighted factor g
hBe directly proportional with user's expectation power.
For example, in 80 * 80 Hadamard matrix, the structure of Hadamard frequency expansion sequence can adopt two kinds of sign indicating number set C1 and C2 to construct.Wherein, C1 is 20 * 20 Hadamard matrix, and C2 is 4 * 4 quasiorthogonal code sequence.
Can with 80 for the first time spread spectrum code sequence be divided into 26 groups, every group comprises 3 spread spectrum code sequences for the first time.High level distributes one group of spread spectrum code sequence for the first time for each user.These 3 some TPC/SS command words that are used to refer in the spread spectrum code sequence for the first time.These 3 sequences and their antitone sequence totally 6 sequences are used to refer to the assembled state of TPC/SS, and the polarity antitone sequence here is each the bit negate in the former sequence (0 becomes 1,1 becomes 0).Mapping relations between the call number of 6 sequences and the TPC/SS assembled state see the following form:
| Index | The TPC indication | The SS indication |
| 0 | ' downward modulation ' | ' downward modulation ' |
| 1 | ' rise ' | ' downward modulation ' |
| 2 | ' downward modulation ' | ' rise ' |
| 3 | ' rise ' | ' rise ' |
| 4 | ' downward modulation ' | ' motionless ' |
| 5 | ' rise ' | ' motionless ' |
Wherein, use 78 sequences, maximum can be supported 26 users' descending TPC and SS carrying simultaneously, and can adjust the weights of different user devices according to path loss.
Wherein, each user carries out same processing.Each user's Hadamard frequency expansion sequence is modulated, and a plurality of users' QPSK modulation back sequence can be used same channel code, and the symbol sebolic addressing after the QPSK of the different user that the uses same channel code modulation is weighted stack.
In sum, the present invention can improve the accuracy of signaling transmission, and can reasonably adjust user power, reduces the interference between the user, thereby can make subscriber equipment as much as possible can maintain the CELL_DCH state, improves power system capacity.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (9)
1. the method for a downlink power control synchronous signaling transmission is characterized in that, may further comprise the steps:
The base station generates a plurality of first time of spread spectrum code sequence, with a plurality of described first time spread spectrum code sequence be divided into a plurality of groups, and with a plurality of described first time the spread spectrum code sequence group distribute to a plurality of users respectively;
Descending power control signaling and down-going synchronous shift signaling that described base station generates each user according to each user's uplink enhanced physical channel or up shared information channel, and select spread spectrum code sequence for the first time that described each user's descending power control signaling and down-going synchronous shift signaling are carried out spread spectrum first time in the spread spectrum code sequence group in the first time of distributing to it according to the state of described each user's descending power control signaling and down-going synchronous shift signaling, with the generation downlink power control synchronous signaling;
Described base station with described a plurality of users' downlink power control synchronous signaling weighted superposition together; And
Described base station utilizes predefined spreading code that weighted superposition downlink power control synchronous signaling is together carried out the spread spectrum second time, and the downlink power control synchronous signaling behind the second time spread spectrum is transmitted.
2. transmission method according to claim 1, it is characterized in that, the described first time, the spread spectrum code sequence group comprised described first time spread spectrum code sequence quantity more than or equal to 1/2 of described descending power control signaling and described down-going synchronous shift signaling number of combinations, wherein, in the described first time spread spectrum code sequence group described first time spread spectrum code sequence and negate after the spread spectrum code sequence first time form new code character, the sign indicating number sequence in the described new code character is used to refer to the assembled state that described descending power is controlled signaling and described down-going synchronous shift signaling.
3. transmission method according to claim 1 and 2 is characterized in that, described predefined spreading code is an orthogonalization variable spread spectrum sign indicating number.
4. transmission method according to claim 3 is characterized in that, described base station adopt semi-static mode with a plurality of described first time the spread spectrum code sequence group distribute to described a plurality of user respectively.
5. transmission method according to claim 4 is characterized in that, described first time, spread spectrum code sequence was the Hadamard sequence.
6. transmission method according to claim 5 is characterized in that, described first time the spread spectrum code sequence group comprise at least three described first time spread spectrum code sequence.
7. transmission method according to claim 6 is characterized in that, described base station by the QPSK modulation sequence with described a plurality of users' downlink power control synchronous signaling weighted superposition together.
8. transmission method according to claim 7 is characterized in that, the weighted factor that is used for described each user is directly proportional with described each user's expectation power.
9. transmission method according to claim 8, it is characterized in that, described base station is divided into two equal segments with described each user's downlink power control synchronous signaling, and be filled in the both sides that strengthen the training sequence code in the mixed repeat requests affirmation of the dedicated channel indicating channel with described two sections respectively, and make near 8 bits of described training sequence code idle.
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| CN2007101541334A CN101394206B (en) | 2007-09-17 | 2007-09-17 | Method for downlink power control synchronous signaling transmission |
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| CN2007101541334A CN101394206B (en) | 2007-09-17 | 2007-09-17 | Method for downlink power control synchronous signaling transmission |
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| CN101394206B CN101394206B (en) | 2012-11-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083187A (en) * | 2010-01-15 | 2011-06-01 | 大唐移动通信设备有限公司 | Method, system and device for transmitting uplink information and processing uplink information |
| CN105872605A (en) * | 2015-01-21 | 2016-08-17 | 上海数字电视国家工程研究中心有限公司 | Signaling coding modulation method and demodulation decoding method based on superposition coding |
| CN111901084A (en) * | 2020-01-17 | 2020-11-06 | 中兴通讯股份有限公司 | Configuration and data processing method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7929498B2 (en) * | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
| MY129851A (en) * | 1999-03-22 | 2007-05-31 | Interdigital Tech Corp | Weighted open loop power control in a time division duplex communication system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083187A (en) * | 2010-01-15 | 2011-06-01 | 大唐移动通信设备有限公司 | Method, system and device for transmitting uplink information and processing uplink information |
| WO2011085639A1 (en) * | 2010-01-15 | 2011-07-21 | 电信科学技术研究院 | Method, system and device for transmitting uplink information and processing uplink information |
| CN102083187B (en) * | 2010-01-15 | 2013-02-20 | 电信科学技术研究院 | Method, system and device for transmitting uplink information and processing uplink information |
| CN105872605A (en) * | 2015-01-21 | 2016-08-17 | 上海数字电视国家工程研究中心有限公司 | Signaling coding modulation method and demodulation decoding method based on superposition coding |
| CN105872605B (en) * | 2015-01-21 | 2018-06-12 | 上海数字电视国家工程研究中心有限公司 | Signalling coding modulator approach and demodulation coding method based on supercomposed coding |
| CN111901084A (en) * | 2020-01-17 | 2020-11-06 | 中兴通讯股份有限公司 | Configuration and data processing method, device, equipment and storage medium |
| WO2021143871A1 (en) * | 2020-01-17 | 2021-07-22 | 中兴通讯股份有限公司 | Configuration method and apparatus, data processing method and apparatus, device, and storage medium |
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| CN101394206B (en) | 2012-11-28 |
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