CN101394206B - Method for downlink power control synchronous signaling transmission - Google Patents
Method for downlink power control synchronous signaling transmission Download PDFInfo
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- CN101394206B CN101394206B CN2007101541334A CN200710154133A CN101394206B CN 101394206 B CN101394206 B CN 101394206B CN 2007101541334 A CN2007101541334 A CN 2007101541334A CN 200710154133 A CN200710154133 A CN 200710154133A CN 101394206 B CN101394206 B CN 101394206B
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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 RAN2006 starts a new research project; Purpose is will in 5MHz, reach and the same spectrum efficiency of Long Term Evolution (Long TermEvolution is called for short LTE).The major technique characteristic 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.
High speed downlink packet to be grouped into guiding inserts (High Speed DownlinkPacket Access; 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 let it lose the chance with fixed broadband network (like 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 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, avoided 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 CCCH (Physical Layer Common Control Channel is called for short PLCCH) is 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 " UEi " representes 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 downlink power control and the synchronizing information of transmitting 14 users 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; The base station is according to each user's uplink enhanced physical channel or up shared each user's of information channel generation descending power control signaling and down-going synchronous shift signaling; 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 the 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 with 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 for indicating descending power to control the assembled state of 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 through 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.
Through 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 sketch map 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 sketch map according to the E-HICH frame structure of the embodiment of the invention;
Fig. 4 is the sketch map according to the QPSK modulation of the embodiment of the invention.
Embodiment
With reference to accompanying drawing, specify embodiment of the present invention below.
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; The base station is according to each user's uplink enhanced physical channel or up shared each user's of information channel generation descending power control signaling and down-going synchronous shift signaling; 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 the 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 with 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 for indicating descending power to control the assembled state of 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=I6 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 that are available (2 * 16 chips) 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, Can 80 Hadamard be divided into the M group, each group has
individual Hadamard sequence, distributes 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; Polarity anti-phase sequence identification 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, is divided into two sections, is 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 NodeB (base station) or radio network controller.Select identical spread spectrum code sequence for fear of neighbor cell; When NodeB or radio network controller should divide into groups in 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, be designated as d corresponding to the QPSK modulation sequence of TPC/SS signature sequence
N, h k,
(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 for the first time some in the spread spectrum code sequence be used for indicating the TPC/SS command word.These 3 sequences and their antitone sequence be totally 6 assembled state that sequence is used for indicating 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 support 26 users' descending TPC and SS to carry simultaneously, and can be according to path loss, the weights of adjustment different user devices.
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, carries out weighted superposition to the symbol sebolic addressing after the QPSK of the different user that the uses same channel code modulation.
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 merely embodiments of the invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, 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 said first time spread spectrum code sequence be divided into a plurality of groups, and with a plurality of said first time the spread spectrum code sequence group distribute to a plurality of users respectively;
Said base station is based on each user's uplink enhanced physical channel or up shared each user's of information channel generation descending power control signaling and down-going synchronous shift signaling; And select spread spectrum code sequence for the first time that said each user's descending power control signaling and down-going synchronous shift signaling are carried out the spread spectrum first time in the spread spectrum code sequence group in the first time of distributing to it based on the state of said each user's descending power control signaling and down-going synchronous shift signaling, with the generation downlink power control synchronous signaling;
Said base station with said a plurality of users' downlink power control synchronous signaling weighted superposition together; And
Said 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 said first time, the spread spectrum code sequence group comprised said first time spread spectrum code sequence quantity more than or equal to 1/2 of said descending power control signaling and said down-going synchronous shift signaling number of combinations; Wherein, In the said first time spread spectrum code sequence group said 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 said new code character is used for indicating said descending power to control the assembled state of signaling and said down-going synchronous shift signaling.
3. transmission method according to claim 1 and 2 is characterized in that, said predefined spreading code is an orthogonalization variable spread spectrum sign indicating number.
4. transmission method according to claim 3 is characterized in that, said base station adopt semi-static mode with a plurality of said first time the spread spectrum code sequence group distribute to said a plurality of user respectively.
5. transmission method according to claim 4 is characterized in that, said first time, spread spectrum code sequence was the Hadamard sequence.
6. transmission method according to claim 5 is characterized in that, said first time the spread spectrum code sequence group comprise at least three said first time spread spectrum code sequence.
7. transmission method according to claim 6 is characterized in that, said base station through the QPSK modulation sequence with said 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 said each user is directly proportional with said each user's expectation power.
9. transmission method according to claim 8; It is characterized in that; Said base station is divided into two equal segments with said each user's downlink power control synchronous signaling; And be filled in the both sides that strengthen the training sequence code in the dedicated channel mixing repeat requests affirmation indicating channel with said two sections respectively, and make near 8 bits of said 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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| CN101394206B true CN101394206B (en) | 2012-11-28 |
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| 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020057659A1 (en) * | 1995-06-30 | 2002-05-16 | Ozluturk Fatih M. | Apparatus for adaptive forward power control for spread-spectrum communications |
| CN1956344A (en) * | 1999-03-22 | 2007-05-02 | 交互数字技术公司 | Weighted open loop power control in a time division duplex communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020057659A1 (en) * | 1995-06-30 | 2002-05-16 | Ozluturk Fatih M. | Apparatus for adaptive forward power control for spread-spectrum communications |
| CN1956344A (en) * | 1999-03-22 | 2007-05-02 | 交互数字技术公司 | Weighted open loop power control in a time division duplex communication system |
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