CN101217344A - A transmission method of physical broadcasting channel aerial information - Google Patents
A transmission method of physical broadcasting channel aerial information Download PDFInfo
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- CN101217344A CN101217344A CNA2008100015389A CN200810001538A CN101217344A CN 101217344 A CN101217344 A CN 101217344A CN A2008100015389 A CNA2008100015389 A CN A2008100015389A CN 200810001538 A CN200810001538 A CN 200810001538A CN 101217344 A CN101217344 A CN 101217344A
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Abstract
The invention discloses a method for transmitting the antenna information of a physical broadcast channel, and a sending end arranges the original information bits in sequence according to the number of the sending antennas of the physical broadcast channel, generates cyclical redundancy check (CRC) bits according to the ordering result, and sends out the CRC bits together with the original information bits; wherein, the method adopts different ordering ways in the situations with two antennas or four antennas. The method of the invention can well detect the antenna information of the physical broadcast channel and is characterized in that the two situations with two antennas and four antennas are well differentiated, thus ensuring the decoding performance of other physical channels.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to a kind of transmission method of physical broadcasting channel aerial information.
Background technology
As shown in Figure 1, be LTE (Long Term Evolution) system frame structure schematic diagram.In the LTE system, the radio frames of a 10ms is divided into two fields, and it is the 0.5ms time slot that each field is divided into 10 length, and two time slots are formed the subframe that length is 1ms, comprise 5 subframes in the field.
As shown in Figure 2, the schematic diagram that sends for LTE system physical broadcast channel.The transmission cycle of Physical Broadcast Channel is 40ms, and wherein, every 10ms Physical Broadcast Channel sends once, and in one-period, Physical Broadcast Channel sends identical information at every turn.For can accurate timing in one-period, stipulate in the LTE standard that send by four times of using different scrambling codes to distinguish in the one-period, the user knows that by the method for blind Detecting current transmission is which time transmission in the one-period.
Stipulate in the LTE standard, antenna that Physical Broadcast Channel can adopt or two antennas or the emission of four antennas, at present, the method of the blind Detecting that adopts according to the send mode of an antenna, two antennas, four antennas, is decoded respectively, by cyclic redundancy check (CRC) (Cyclic Redundancy Check, CRC) judge whether decoding is correct,, know the antenna amount that current Physical Broadcast Channel sends with this.
But, owing to can adopt SFBC (space-frequency coding) diversity mode during two antennas, can adopt SFBC diversity+FSTD (frequency domain switching diversity) mode during four antennas, make the differentiation of two antennas and four antennas become difficult, if can not obtain aerial information, the data decode performance of other down physical channel will become very poor.
Summary of the invention
The invention provides a kind of transmission method of physical broadcasting channel aerial information, to separate the problem that must not accurately obtain aerial information.
In order to solve the problems of the technologies described above, the invention provides a kind of transmission method of physical broadcasting channel aerial information, be applied to wireless communication system,
Transmitting terminal is according to the quantity of Physical Broadcast Channel transmitting antenna, original information bits is sorted, generate the cyclic redundancy check (CRC) position according to ranking results, send the sortord difference that adopts under wherein said two antennas or the four antenna situations with original information bits.
The method of the invention, wherein,
Receiving terminal adopts corresponding manner to decode according to the situation of different Physical Broadcast Channel number of transmission antennas successively, after each decoding, the sortord that adopts according to transmitting terminal under this number of transmission antennas sorts to the information bit that decoding obtains, and carries out CRC check according to the CRC position that ranking results generates.
The method of the invention, wherein, transmitting terminal is numbered original information bits earlier in the described system, the sortord that adopts comprises the combination in any in the following mode: arrange from big to small or the order negate by the numbering of original information bits, or backward negate, arrange from small to large or the order negate by the numbering of original information bits, or backward negate, original information bits or odd-numbered negate that the original information bits of elder generation's arrangement odd-numbered is arranged even-numbered again, the even-numbered negate, original information bits or even-numbered negate that the original information bits of elder generation's arrangement even-numbered is arranged odd-numbered again, the odd-numbered negate.
The method of the invention, wherein, the quantity of described Physical Broadcast Channel transmitting antenna is the combination in any in the following quantity: an antenna, two antennas, four antennas.
The method of the invention, wherein, described receiving terminal is after CRC check is passed through, and the number of transmission antennas of then judging the transmitting physical broadcast channel is the pairing Physical Broadcast Channel number of transmission antennas of current decoding process.
The method of the invention, wherein, described ordering to original information bits is used to generate the CRC position, and the order of original information bits is constant when sending.
The method of the invention, wherein, transmitting terminal also adopts when an antenna and two antennas, the different sortord of four antennas.
The method of the invention, wherein, described wireless communication system is a Long Term Evolution LTE system.
By the method for the invention, can well detect the aerial information of Physical Broadcast Channel, particularly can well distinguish two antennas and two kinds of situations of four antennas, thereby guarantee the decoding performance of other physical channel.
Description of drawings
Fig. 1 is a LTE system frame structure schematic diagram;
Fig. 2 is the schematic diagram that LTE system physical broadcast channel sends.
Embodiment
Mentality of designing of the present invention is as follows: at transmitting terminal, according to the quantity of Physical Broadcast Channel transmitting antenna, original information bits according to different sortord orderings, is produced the cyclic redundancy check (CRC) position, send with data.Described sortord comprises order, backward, elder generation's odd-numbered is even-numbered again, elder generation's even-numbered is odd-numbered again, the order negate, backward negate, odd-numbered negate, even-numbered negate etc., this sortord has carried all or part of aerial information (can also comprise out of Memory): these whole aerial informations are an antenna, two antennas, four antennas; This part aerial information is a kind of or two kinds of information in an antenna, two antennas, four antennas.
Below in conjunction with embodiment technical scheme of the present invention is described in detail.
First embodiment:
At transmitting terminal,
According to the quantity of Physical Broadcast Channel transmitting antenna, original information bits is sorted according to different sortords, generate the CRC position according to ranking results, send with original information bits.More than arranging only is in order to generate the CRC position, and the order of original information bits is constant during transmission.
At first, to the original information bits serial number, regulation, when Physical Broadcast Channel was an antenna, original information bits was according to numbering rank order from small to large; When Physical Broadcast Channel was two antennas, original information bits was according to numbering rank order from big to small; When Physical Broadcast Channel is four antennas, original information bits according to first odd-numbered again the mode of even-numbered sort; Then, generate the CRC position according to the original information bits after the ordering again.
At receiving terminal,
Situation according to different Physical Broadcast Channel number of transmission antennas adopts corresponding manner to decode successively, after each decoding, the sortord that adopts according to transmitting terminal under this number of transmission antennas sorts to the information bit that decoding obtains, and the CRC that generates according to ranking results carries out CRC check.After CRC check was passed through, the number of transmission antennas of then judging the transmitting physical broadcast channel was the pairing Physical Broadcast Channel number of transmission antennas of current decoding process.
At first, mode according to an antenna is decoded, simultaneously, the information bit that solves is according to numbering rank order from small to large, carry out CRC check, if CRC check is passed through, then the number of transmit antennas of transmitting physical broadcast channel is an antenna, otherwise, decode according to the mode of two antennas, simultaneously, the information bit that solves is according to numbering rank order from big to small again, carry out CRC check, if CRC check is passed through, then the number of transmit antennas of transmitting physical broadcast channel is two antennas, otherwise, decode according to the mode of four antennas again, simultaneously, the information bit that solves according to the numbering first odd-numbered again the mode of even-numbered sort, carry out CRC check, if CRC check is passed through, then the number of transmit antennas of transmitting physical broadcast channel is four antennas.
Second embodiment:
At transmitting terminal,
According to the quantity of Physical Broadcast Channel transmitting antenna, original information bits is sorted according to different sortords, generate the CRC position according to ranking results, send with original information bits.
At first, to the original information bits serial number, regulation, when Physical Broadcast Channel was one, two antennas, original information bits was according to numbering rank order from small to large; When Physical Broadcast Channel was four antennas, original information bits was according to numbering rank order from big to small; Then, generate the CRC position according to the original information bits after the ordering again.
At receiving terminal,
Situation according to different Physical Broadcast Channel number of transmission antennas adopts corresponding manner to decode successively, after each decoding, the sortord that adopts according to transmitting terminal under this number of transmission antennas sorts to the information bit that decoding obtains, and the CRC that generates according to ranking results carries out CRC check.After CRC check was passed through, the number of transmission antennas of then judging the transmitting physical broadcast channel was the pairing Physical Broadcast Channel number of transmission antennas of current decoding process.
At first, mode according to an antenna is decoded, simultaneously, the information bit that solves carries out CRC check, if CRC check is passed through according to numbering rank order from small to large, then the number of transmit antennas of transmitting physical broadcast channel is an antenna, otherwise, decode according to the mode of two antennas again, simultaneously, the information bit that solves is according to numbering rank order from small to large, carry out CRC check, if CRC check is passed through, then the number of transmit antennas of transmitting physical broadcast channel is two antennas, otherwise, decode according to the mode of four antennas, simultaneously, the information bit that solves is according to numbering rank order from big to small again, carry out CRC check, if CRC check is passed through, then the number of transmit antennas of transmitting physical broadcast channel is four antennas.
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.
For example, because receiving terminal by different decoding processes than the situation that is easier to distinguish an antenna and two antennas, four antennas, so also can not sort or adopt during an antenna and two antennas, sortord that four antennas are identical.
Claims (8)
1. the transmission method of a physical broadcasting channel aerial information is applied to wireless communication system, it is characterized in that,
Transmitting terminal is according to the quantity of Physical Broadcast Channel transmitting antenna, original information bits is sorted, generate the cyclic redundancy check (CRC) position according to ranking results, send the sortord difference that adopts under wherein said two antennas or the four antenna situations with original information bits.
2. method according to claim 1 is characterized in that,
Receiving terminal adopts corresponding manner to decode according to the situation of different Physical Broadcast Channel number of transmission antennas successively, after each decoding, the sortord that adopts according to transmitting terminal under this number of transmission antennas sorts to the information bit that decoding obtains, and carries out CRC check according to the CRC position that ranking results generates.
3. as method as described in the claim 2, it is characterized in that, transmitting terminal is numbered original information bits earlier in the described system, the sortord that adopts comprises the combination in any in the following mode: arrange from big to small or the order negate by the numbering of original information bits, or backward negate, arrange from small to large or the order negate by the numbering of original information bits, or backward negate, original information bits or odd-numbered negate that the original information bits of elder generation's arrangement odd-numbered is arranged even-numbered again, the even-numbered negate, original information bits or even-numbered negate that the original information bits of elder generation's arrangement even-numbered is arranged odd-numbered again, the odd-numbered negate.
4. as method as described in the claim 1,2 or 3, it is characterized in that the quantity of described Physical Broadcast Channel transmitting antenna is the combination in any in the following quantity: an antenna, two antennas, four antennas.
5. as method as described in the claim 2, it is characterized in that described receiving terminal is after CRC check is passed through, the number of transmission antennas of then judging the transmitting physical broadcast channel is the pairing Physical Broadcast Channel number of transmission antennas of current decoding process.
6. method according to claim 1 is characterized in that described ordering to original information bits is used to generate the CRC position, and the order of original information bits is constant when sending.
7. method according to claim 1 is characterized in that transmitting terminal also adopts and two antennas, the different sortord of four antennas when an antenna.
8. method according to claim 1 is characterized in that described wireless communication system is a Long Term Evolution LTE system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100015389A CN101217344B (en) | 2008-01-08 | 2008-01-08 | A transmission method of physical broadcasting channel aerial information |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100015389A CN101217344B (en) | 2008-01-08 | 2008-01-08 | A transmission method of physical broadcasting channel aerial information |
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| CN101217344A true CN101217344A (en) | 2008-07-09 |
| CN101217344B CN101217344B (en) | 2012-11-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105402A1 (en) * | 2009-03-16 | 2010-09-23 | 华为技术有限公司 | Method, base station, user equipment and network system for information sending and receiving |
| CN101877688A (en) * | 2009-04-29 | 2010-11-03 | 华为技术有限公司 | Diversity transmission method and device of OFDM (Orthogonal Frequency Division Multiplexing) system |
| CN102724552A (en) * | 2012-05-30 | 2012-10-10 | 华为技术有限公司 | Image coding method, image decoding method and device |
-
2008
- 2008-01-08 CN CN2008100015389A patent/CN101217344B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105402A1 (en) * | 2009-03-16 | 2010-09-23 | 华为技术有限公司 | Method, base station, user equipment and network system for information sending and receiving |
| CN101877688A (en) * | 2009-04-29 | 2010-11-03 | 华为技术有限公司 | Diversity transmission method and device of OFDM (Orthogonal Frequency Division Multiplexing) system |
| CN101877688B (en) * | 2009-04-29 | 2014-01-01 | 华为技术有限公司 | Diversity transmission method and device of OFDM (Orthogonal Frequency Division Multiplexing) system |
| CN102724552A (en) * | 2012-05-30 | 2012-10-10 | 华为技术有限公司 | Image coding method, image decoding method and device |
| CN102724552B (en) * | 2012-05-30 | 2014-12-17 | 华为技术有限公司 | Image coding method, image decoding method and device |
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| CN101217344B (en) | 2012-11-14 |
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Granted publication date: 20121114 Termination date: 20200108 |