CN101489285B - User equipment access method and system - Google Patents
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- CN101489285B CN101489285B CN2008100563701A CN200810056370A CN101489285B CN 101489285 B CN101489285 B CN 101489285B CN 2008100563701 A CN2008100563701 A CN 2008100563701A CN 200810056370 A CN200810056370 A CN 200810056370A CN 101489285 B CN101489285 B CN 101489285B
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Abstract
The present invention provides a user equipment access method and a system thereof, wherein the method comprises the following steps: dividing the system frequency band to one or more than one operating frequency bands, setting a synchronous channel (SCH) and a principle broadcast channel (PBCH) at the intermediate position of each operating frequency band; transmitting downlink synchronous signal on SCH, transmitting a principle broadcast signal which comprises the information required for accessing the user equipment into the system on PBCH; receiving the downlink synchronous signal and principle broadcast signal by the user equipment for accessing the system. The method and system provided by the invention can be suitable for the wireless access under large system bandwidth.
Description
Technical field
The present invention relates to the broadband wireless communication technique field, particularly user equipment access method and system.
Background technology
In the access module of existing wireless communication system, (UE UserEquipment) has the signal reception that is complementary with system bandwidth to need subscriber equipment.For example, at existing Long Term Evolution (LTE, Long Term Evolution) in the wireless communication standard, maximum system bandwidth reaches 20MHz, for fear of the difficulty of system design, the signal reception of UE is set at supports maximum system bandwidth 20MHz, and the synchronizing channel of system (SCH, Synchronization Channel) and broadcast channel (BCH, Broadcasting Channel) be positioned at the central area of system bandwidth.Referring to Fig. 1, Fig. 1 is the frequency-domain structure schematic diagram of SCH/BCH in the prior art LTE system.SCH and BCH all are placed in the center of cell system bandwidth, and primary bandwidth is 1.25MHz.
UE is in start or lose network when service, need come capture systems by initial cell search, and UE need identify the sub-district that it will be resident and demodulate system information among the BCH of this sub-district.In this process, UE scans SCH, realizes Time and Frequency Synchronization by SCH, obtains cell ID; The broadcast message of UE receiving system, and according to the time-frequency resource allocating information of the up-downgoing Random Access Channel of system broadcast information indication, UE initiates initial random access procedure.After finishing uplink synchronous, mutual high-level signaling will be continued in UE and base station, finish the park operation of UE in the sub-district.
The UE signal reception that defines among the LTE is the maximum system bandwidth 20MHz of system, therefore need redirect not come received signal on system bandwidth.The base station can be according to the signal handling capacity of UE and the distribution condition of system resource, and indication UE receives and handle the signal of a certain assigned frequency band.The user can carry out broadcast message, cell measurement and the sub-district gravity treatment etc. on the monitoring system center frequency-band easily.
Broadband wireless communications will become the main developing direction of mobile communication from now on, and for example, in the IMT-Advanced of ITU system, the bandwidth of maximum wireless communication can reach 100MHz.The increase of future broadband wireless communication systems bandwidth, make bandwidth resource allocation multiple choices may occur, the system bandwidth that different operators may distribute is different, the signal reception of UE also has difference simultaneously, therefore, for the NGBW communication system, continue to use existing wireless-access mode, the signal reception that requires UE to have to be complementary with system bandwidth obviously is unpractical.As seen, existing wireless-access mode can't adapt to the user's access under the large bandwidth system.
Summary of the invention
The embodiment of the invention proposes a kind of user equipment access method, and this method can adapt to the wireless access under the big system bandwidth.
The embodiment of the invention also proposes a kind of subscriber equipment connecting system, subscriber equipment and base station, can adapt to the wireless access under the big system bandwidth.
The technical scheme of the embodiment of the invention is achieved in that
A kind of user equipment access method comprises:
Band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and main broadcast channel (PBCH, Primary BCH);
Send downlink synchronous signal on the SCH of each working band, send main broadcast singal on the PBCH of each working band, described main broadcast singal comprises the information that the subscriber equipment connecting system is required;
With the public broadcasting division of signal is one or more block of informations; Described public broadcasting signal comprises the system information except that main broadcast singal;
At each working band common broadcast channel is set, each block of information is mapped on the common broadcast channel of a working band, the working band difference of each block of information mapping; On the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band;
Subscriber equipment receives described downlink synchronous signal and main broadcast singal, carries out system and inserts.
A kind of subscriber equipment connecting system comprises:
The base station is used for band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and PBCH; Send downlink synchronous signal on the SCH of each working band, send main broadcast singal on the PBCH of each working band, described main broadcast singal comprises the information that the subscriber equipment connecting system is required; Also being used for the public broadcasting division of signal is one or more block of informations; Described public broadcasting signal comprises the system information except that main broadcast singal; At each working band common broadcast channel is set, each block of information is mapped on the common broadcast channel of different operating frequency band, on the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band;
Subscriber equipment is used to receive downlink synchronous signal and the main broadcast singal that the base station sends, and carries out system and inserts.
A kind of base station comprises:
Working band is divided module, is used for band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and PBCH;
The downlink synchronous signal sending module is used for sending downlink synchronous signal at the SCH of each set working band of working band division module;
Main broadcast singal sending module is used for sending main broadcast singal at the PBCH of each set working band of working band division module;
Public broadcasting division of signal module, being used for the public broadcasting division of signal is one or more block of informations;
The block of information sending module is used at each working band common broadcast channel being set, and each block of information is mapped on the common broadcast channel of a working band working band difference of each block of information mapping; On the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band.
As seen, user equipment access method, system customer equipment and base station that the embodiment of the invention proposes are one or more working bands with the broadband frequency band division, and the center of each working band is provided with SCH/BCH.All users carry out the concurrent initially access at random of initial down-going synchronous from a certain SCH/BCH of sub-district, indication jumps to working band according to system information of subdistricts then, like this with regard to good UE signal reception and the unmatched problem of system bandwidth of having solved, make the well UE of compatible different abilities of sub-district; UE enters after the working band, receives SCH and BCH in this working band, needn't frequently jump to specific frequency and read broadcasting.So just can adapt to the wireless access under the big system bandwidth.
Description of drawings
Fig. 1 is the frequency-domain structure schematic diagram of SCH/BCH in the prior art LTE system;
Fig. 2 is the position view of division of embodiment of the invention band system band and SCH/BCH.
Embodiment
The embodiment of the invention proposes a kind of system of broadband wireless communication user equipment access method, this method is divided into one or more working bands with band system band, the centre position of each working band is provided with SCH, main broadcast channel (PBCH) and common broadcast channel, and wherein PBCH and common broadcast channel can be referred to as BCH; Send downlink synchronous signal on SCH, send main broadcast singal on PBCH, described main broadcast singal comprises the information that the subscriber equipment connecting system is required; Subscriber equipment receives described downlink synchronous signal and main broadcast singal, carries out system and inserts.On common broadcast channel, send the public broadcasting signal.
The mode of above-mentioned division band system band can for: according to the signal reception of the subscriber equipment of the lowest class of system definition, band system band is divided into one or more working band, the about bandwidth of each working band can equal the lowest class subscriber equipment the bandwidth that can receive.
For example, the signal reception of the subscriber equipment that defines in the system has respectively: 5MHz, 10MHz, 15MHz, 20MHz and 40MHz, then can be according to the signal reception of the subscriber equipment of the lowest class, be 5MHz, band system band is divided into a plurality of working bands, and the bandwidth of each working band is 5MHz.The centre position of each working band is provided with SCH and BCH.As shown in Figure 2, Fig. 2 is the position view of division of embodiment of the invention band system band and SCH/BCH.In Fig. 2, band system band is 60MHz, and the signal reception of the subscriber equipment of the lowest class is 5MHz in the system, the working band that then band system band to be divided into 12 bandwidth be 5MHz, and the centre position of each working band is provided with SCH and BCH.
Wherein, on SCH, send downlink synchronous signal, be used for down time-frequency synchronization, cell identification, frame timing and frequency sign.The downlink synchronous signal that the SCH of each working band go up to send can be identical, also can be different.SCH should have good auto-correlation, cross correlation and anti-frequency deviation, noise resisting ability, is convenient to the structure of simplified receiver.
On PBCH, send main broadcast singal, comprise the required information of subscriber equipment connecting system in the main broadcast singal, comprising: the relevant information in system bandwidth information, random access information and this working band.
On common broadcast channel, send the public broadcasting signal, comprised other system information in the public broadcasting signal, as information of adjacent cells, sub-district gravity treatment information and cell measurement information.Because the amount of information that the public broadcasting signal comprises is bigger, it is fast the public broadcasting signal can be divided into a plurality of information, evenly distributes the firing order cyclic shift of each block of information in each frame that links to each other on frequency domain.Concrete mode is:
With the public broadcasting division of signal is one or more block of informations; Described public broadcasting signal comprises the system information except that main broadcast singal, as: cell selecting information, gravity treatment information and measuring control information etc.
Each block of information is mapped on the common broadcast channel of a working band working band difference of each block of information mapping; On the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band.
As shown in Figure 2, be 12 block of informations with the public broadcasting division of signal, each block of information numbering is respectively 0 to 11.During the t1 frame, block of information 0 to block of information 11 is mapped to the common broadcast channel of the 0th to 11 working band respectively, on the common broadcast channel of each working band, sends corresponding block of information; During the t2 frame, the mapping order of block of information moves 1 backward on the common broadcast channel of each working band, that is: block of information 1 is mapped to the 0th working band common broadcast channel, with block of information 2 be mapped to the 1st working band common broadcast channel ..., block of information 11 is mapped to the common broadcast channel of the 10th working band, block of information 0 is mapped to the common broadcast channel of the 11st working band; During the t3 frame, the mapping order of block of information moves 1 more backward on the common broadcast channel of each working band, by that analogy.
UE can receive block of information on the common broadcast channel of the working band at its place, obtain the public broadcasting signal.UE for signal reception and system bandwidth coupling can receive complete public broadcasting signal fast within a frame, and obtains sufficient frequency diversity gain, and receptivity is better; For the minimum UE of signal reception, can be in a broadcast cycle that the reception of public broadcasting signal is complete, in the system that is operated in a relative arrowband.
Among the embodiment shown in Figure 2, the number of block of information equals the number of working band in the system, and this embodiment only is a kind of comparatively desirable execution mode.In other embodiments of the invention, the number of block of information can be not equal to the number of working band, and according to actual conditions dividing data piece.For example: 12 working bands are arranged in the system, and the public broadcasting signal is divided into 15 block of informations, then mapping relations can for: during the t1 frame, respectively block of information 0 to block of information 11 is mapped to successively the common broadcast channel of the 0th to the 11st working band; During the t2 frame, respectively block of information 12 to block of information 14 is mapped to the common broadcast channel of the 0th to the 2nd working band, afterwards, respectively block of information 1 to block of information 9 is mapped to the common broadcast channel of the 3rd to the 11st working band; Mapping relations when the t3 frame repeat no more by that analogy.
Band system band is carried out after the above-mentioned division, and UE carries out the main process that system inserts and is:
1, downlink synchronous signal search:
UE is after start, and according to the record of the operator in the SIM card, the SCH on the scanning respective operator frequency spectrum carries out initial downlink synchronous signal and catches, and enters next step if downlink synchronous signal detects successfully and reads broadcasting; If unsuccessful, then scan each possible SCH one by one, adjudicate successfully until detecting.
2, cell selecting:
UE carries out RSRP and detects, and satisfies the S criterion.
UE obtains system broadcast information from the main broadcast singal of PBCH, learn system bandwidth, supporting business, initial access-in resource information etc.The proper cell of UE selective power and professional coupling is prepared to insert.
3, the UE working band is selected, is inserted and registration:
(1) for the UE of signal reception and bandwidth of cell coupling:
UE directly selects current frequency range.If initial access frequency point is not in the center of system bandwidth, then UE does the carrier shift adjustment according to the indication of main broadcast singal.Afterwards, UE carries out down-going synchronous and proofreaies and correct, and receives main broadcast singal, initiates initial random access procedure according to the initial access-in resource of system's indication, carries out sub-district registration operation.
(2) for the UE of signal reception less than the bandwidth of cell coupling:
UE initiates initial random access on initial access frequency point, report signal reception and the signal handling capacity of self to the base station; Up access channel resource is distributed according to the signal reception of this UE and the loading condition of signal handling capacity and each working band in the base station, indicates this UE to jump to suitable working band; UE carries out the working band redirect according to described indication, and adjusts the carrier frequency frequency of receiver.
The initial random access of the UE of working band redirect is finished on initial access frequency point, UE jumps to working band after receiving the base station indication, needn't carry out initial random access once more at working band, can set up signaling reliably according to the indication of system and connect, it is mutual to carry out high-level signaling.
When UE is operated in working band, initiate business if desired, also need random access procedure.Initiate this moment the detailed process that inserts at random can for: the SCH that UE receives the place working band goes up the downlink synchronous signal that sends, and carries out synchronous correction; The PBCH that UE receives the place working band goes up the main broadcast singal that sends, and obtains the up access channel resource information of described working band, initiates to insert at random, carries out sub-district registration operation.After the subscriber equipment redirect, when needs were set up the high-level signaling connection immediately on new working frequency range, this inserts at random can be non-competing access at random.The base station can be according to quantity and the up access channel resource of access success rate reasonable distribution of the UE in each working band, and order inserts at random has enough probability of succesies, and UE initiates random access procedure in the access channel resource of base station assigns.
4, sub-district gravity treatment
UE inserts after certain sub-district, when satisfying the triggering criterion of sub-district gravity treatment, promptly needs to carry out the sub-district gravity treatment.At this moment, certain restriction can be arranged, below describe in detail the measuring range of sub-district gravity treatment:
For gravity treatment frequently together, can consider all neighbor cells on the identical working band, do not consider the different operating frequency band of neighbor cell, because the reason of sub-district gravity treatment is that UE is away from original Serving cell, signal strength signal intensity in the frequency-selective channel of each frequency of former sub-district is different, if each working band in the search neighbor cell, be possible obtain better signal in the short term, but from long-time statistical, the average signal power of each working band is consistent, therefore the surveying work of neighbor cell different operating frequency band is nonsensical, and loses time.
For the alien frequencies gravity treatment, can consider a working band of all neighbor cells outside this cell system frequency band, do not consider a plurality of working bands of neighbor cell, reason is as above.
Subscriber equipment is learnt system bandwidth, supporting business, initial access-in resource information etc. from neighbor cell reading system broadcast message.UE notes down following the cell information that might insert, and the sub-district of selection and self-ability and professional coupling the most prepares to insert.
The mode of concrete sub-district gravity treatment can for: UE obtains the signal strength signal intensity of all neighbor cells outside this cell system frequency band, and the alien frequencies gravity treatment is carried out in the sub-district of selective power and professional coupling in the signal strength signal intensity proper cell; Perhaps, subscriber equipment obtains the signal strength signal intensity of a working band of all neighbor cells outside this cell system frequency band, and the alien frequencies gravity treatment is carried out in the sub-district of selective power and professional coupling in the signal strength signal intensity proper cell.
The embodiment of the invention also proposes a kind of subscriber equipment connecting system, comprising:
The base station is used for band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and PBCH; Send downlink synchronous signal on the SCH of each working band, send main broadcast singal on the PBCH of each working band, described main broadcast singal comprises the information that the subscriber equipment connecting system is required;
Subscriber equipment is used to receive downlink synchronous signal and the main broadcast singal that the base station sends, and carries out system and inserts.
The base station can be divided band system band according to the signal reception of the subscriber equipment of the lowest class of system definition.
In the said system, the base station can also be further used for: with the public broadcasting division of signal is one or more block of informations; Described public broadcasting signal comprises the system information except that main broadcast singal; Centre position at each working band is provided with common broadcast channel, each block of information is mapped on the common broadcast channel of different operating frequency band, sends corresponding block of information on the common broadcast channel of each working band; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band;
Described subscriber equipment can be further used for: receive the block of information that the base station sends on the common broadcast channel of the working band at its place, obtain the public broadcasting signal.
The embodiment of the invention also proposes a kind of subscriber equipment, can comprise:
The unit is initiated in initial random access, be used to receive downlink synchronous signal and the main broadcast singal that the base station sends, initial random access is initiated at initial access frequency point in the sub-district of selective power and professional coupling, reports signal reception and the signal handling capacity of self to the base station;
The redirect performance element is used to receive the redirect indication that the base station sends, and carries out the working band redirect according to described indication, and adjusts the carrier frequency frequency of receiver.
Above-mentioned subscriber equipment can further include:
Insert at random and initiate the unit, be used to receive the last downlink synchronous signal that sends of SCH of subscriber equipment place working band, carry out synchronous correction; The PBCH that receives subscriber equipment place working band goes up the main broadcast singal that sends, and obtains the up access channel resource information of described working band, initiates to insert at random.
The public broadcasting signal acquisition module is used for receiving the block of information that the base station sends on the common broadcast channel of the working band at subscriber equipment place, obtains the public broadcasting signal.
With the unit of gravity treatment frequently, be used to obtain the signal strength signal intensity of all neighbor cells on the identical working band, carry out with gravity treatment frequently the sub-district of selective power and professional coupling in the signal strength signal intensity proper cell.
Alien frequencies gravity treatment unit is used to obtain the signal strength signal intensity of a working band of all neighbor cells outside this cell system frequency band, and the alien frequencies gravity treatment is carried out in the sub-district of selective power and professional coupling in the signal strength signal intensity proper cell.
The embodiment of the invention also proposes a kind of base station, can comprise:
Working band is divided module, is used for band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and PBCH;
The downlink synchronous signal sending module is used for sending downlink synchronous signal at the SCH of each set working band of working band division module;
Main broadcast singal sending module is used for sending main broadcast singal at the PBCH of each set working band of working band division module.
Above-mentioned base station can further include:
Public broadcasting division of signal module, being used for the public broadcasting division of signal is one or more block of informations;
The block of information sending module is used in the centre position of each working band common broadcast channel being set, and each block of information is mapped on the common broadcast channel of a working band working band difference of each block of information mapping; On the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band.
In a word, the embodiment of the invention proposes a kind of cut-in method, system customer equipment and base station of tackling following great bandwidth radio communication system, band system band is divided into one or more working bands, in order to the various subscriber equipmenies of compatibility with unlike signal receiving ability; Under the unmatched situation of UE and system bandwidth, carry out the working band redirect according to the indication of base station; System all is provided with SCH and BCH on each working band, make that UE carries out a certain working band after, can receive SCH and BCH in this working band, read broadcasting and needn't frequently jump to specific frequency.In addition, the embodiment of the invention has been improved the send mode of public broadcasting signal, makes UE can get the frequency diversity gain when receiving the public broadcasting signal; And the embodiment of the invention has also proposed restriction to the scope of sub-district gravity treatment, can accelerate sub-district gravity treatment process.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (14)
1. a user equipment access method is characterized in that, described method comprises:
Band system band is divided into one or more working bands, and the centre position of each working band is provided with synchronous channel SCH and main broadcast channel PBCH;
Send downlink synchronous signal on the SCH of each working band, send main broadcast singal on the PBCH of each working band, described main broadcast singal comprises the information that the subscriber equipment connecting system is required;
With the public broadcasting division of signal is one or more block of informations; Described public broadcasting signal comprises the system information except that main broadcast singal;
At each working band common broadcast channel is set, each block of information is mapped on the common broadcast channel of a working band, the working band difference of each block of information mapping; On the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band;
Subscriber equipment receives described downlink synchronous signal and main broadcast singal.
2. method according to claim 1 is characterized in that, described method downlink synchronous signal is used to finish cell downlink Time and Frequency Synchronization, cell identification, frame timing and frequency sign.
3. method according to claim 1 is characterized in that, the SCH of described each working band goes up the downlink synchronous signal difference that sends.
4. method according to claim 1 is characterized in that, described main broadcast singal comprises: the relevant information in system bandwidth information, random access information and this working band.
5. method according to claim 1 is characterized in that, described method further comprises:
Subscriber equipment receives described block of information on the common broadcast channel of the working band at its place, obtain the public broadcasting signal.
6. according to any described method in the claim 1 to 5, it is characterized in that described method further comprises:
Subscriber equipment receives described downlink synchronous signal and main broadcast singal, and initial random access is initiated at initial access frequency point in the sub-district of selective power and professional coupling, reports signal reception and the signal handling capacity of self to the base station; The base station is according to the signal reception of described subscriber equipment and the loading condition of signal handling capacity and each working band, and the indication subscriber equipment jumps to suitable working band;
Subscriber equipment carries out the working band redirect according to described indication, and adjusts the carrier frequency frequency of receiver.
7. method according to claim 6 is characterized in that, described method further comprises: up access channel resource is distributed according to the quantity and the access success rate of the subscriber equipment on each working band in the base station.
8. method according to claim 6 is characterized in that, described method further comprises:
The SCH that subscriber equipment receives the place working band goes up the downlink synchronous signal that sends, and carries out synchronous correction;
The PBCH that subscriber equipment receives the place working band goes up the main broadcast singal that sends, and obtains the up access channel resource information of described working band, initiates to insert at random.
9. method according to claim 8 is characterized in that, when subscriber equipment needed to set up on the working frequency range at place immediately the high-level signaling connection after redirect, the described access at random was non-competing access at random.
10. method according to claim 1, it is characterized in that, described method further comprises: subscriber equipment obtains the signal strength signal intensity of all neighbor cells on the identical working band, and carry out with gravity treatment frequently the sub-district of selective power and professional coupling in the signal strength signal intensity proper cell.
11. method according to claim 1, it is characterized in that, described method further comprises: subscriber equipment obtains the signal strength signal intensity of a working band of all neighbor cells outside this cell system frequency band, and the alien frequencies gravity treatment is carried out in the sub-district of selective power and professional coupling in the signal strength signal intensity proper cell.
12. a subscriber equipment connecting system is characterized in that, described system comprises:
The base station is used for band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and PBCH; Send downlink synchronous signal on the SCH of each working band, send main broadcast singal on the PBCH of each working band, described main broadcast singal comprises the information that the subscriber equipment connecting system is required; Also being used for the public broadcasting division of signal is one or more block of informations; Described public broadcasting signal comprises the system information except that main broadcast singal; At each working band common broadcast channel is set, each block of information is mapped on the common broadcast channel of different operating frequency band, on the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band;
Subscriber equipment is used to receive downlink synchronous signal and the main broadcast singal that the base station sends.
13. system according to claim 12 is characterized in that, described subscriber equipment is further used for: receive the block of information that the base station sends on the common broadcast channel of the working band at its place, obtain the public broadcasting signal.
14. a base station is characterized in that, described base station comprises:
Working band is divided module, is used for band system band is divided into one or more working bands, and the centre position of each working band is provided with SCH and PBCH;
The downlink synchronous signal sending module is used for sending downlink synchronous signal at the SCH of each set working band of working band division module;
Main broadcast singal sending module is used for sending main broadcast singal at the PBCH of each set working band of working band division module;
Public broadcasting division of signal module, being used for the public broadcasting division of signal is one or more block of informations;
The block of information sending module is used at each working band common broadcast channel being set, and each block of information is mapped on the common broadcast channel of a working band working band difference of each block of information mapping; On the common broadcast channel of each working band, send corresponding block of information; In each frame that sends block of information, the mapping order of block of information carries out cyclic shift with respect to the mapping order of block of information in the previous frame on the common broadcast channel of each working band.
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| CN2008100563701A CN101489285B (en) | 2008-01-17 | 2008-01-17 | User equipment access method and system |
| PCT/CN2009/070209 WO2009092332A1 (en) | 2008-01-17 | 2009-01-19 | User equipment accessing method and system |
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| CN2008100563701A CN101489285B (en) | 2008-01-17 | 2008-01-17 | User equipment access method and system |
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| CN102111882B (en) * | 2009-12-25 | 2014-09-10 | 中兴通讯股份有限公司 | Method, equipment and system for allocating random access resources |
| KR20130028397A (en) | 2011-09-09 | 2013-03-19 | 삼성전자주식회사 | Apparatus and method for synchronizing and obtaining system information in wireless communication system |
| CN112235226A (en) * | 2016-05-09 | 2021-01-15 | 三星电子株式会社 | Method and apparatus for transmitting/receiving synchronization signal in wireless cellular communication system |
| SG11201809608XA (en) * | 2016-05-12 | 2018-11-29 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Signal transmission method, network device, and terminal device |
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| CN101031098A (en) * | 2007-04-06 | 2007-09-05 | 陈鹏 | High-speed down packet accessing method for supporting medium-low speed data user in TD-SCDMA |
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| CN101489285A (en) | 2009-07-22 |
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