CN101483510A - Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system - Google Patents
Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system Download PDFInfo
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Abstract
The present invention discloses an uplink-downlink time slot proportion information notifying method of time division duplex system and a device thereof. The method and the device correlate the resource magnitude information of physical hybrid automatic request retransmission indicating channel PHICH in the main broadcasting information with the uplink-downlink time slot proportion information of time division duplex system. The uplink-downlink time slot proportion information of time division duplex system, which is correlated with the magnitude information of PHICH resource, is notified to the user facility through the main broadcasting information. The magnitude information of PHICH resource is correlated with the uplink-downlink time slot proportion of time division duplex system, thereby providing more elaborate PHICH resource magnitude division for the TDD system and avoiding the wastage of PHICH resource.
Description
Technical field
The present invention relates to communication technical field, particularly uplink and downlink timeslot ratio information of time division duplex system Notification Method and device.
Background technology
At present, 3-G (Generation Three mobile communication system) (3G) adopts code division multiple access CDMA multi-access mode, supports multimedia service, can have higher competitiveness in several years of future.But, in order to ensure in the longer time, keeping this competitiveness, 3-G (Generation Three mobile communication system) partner plans Long Term Evolution (the Long Term Evolution that 3GPP has started the 3G wireless interface technology, LTE) research project, this project is that target is studied with the cost that reduces time delay, improves user data rate, improves power system capacity and covering and reduce operator.
According to existing progress, LTE determines to support two class frame structures.First kind frame structure as shown in Figure 1, each wireless frame length is 10ms, is made up of 20 time slots, every slot length is 0.5ms, mark from 0 to 19.Per two continuous time slot are a subframe, totally 10 subframes in the radio frames.Such frame structure is only applicable to FDD system.
Second kind of frame structure as shown in Figure 2, the frame length of radio frames is 10ms, wherein every 5ms is a field, and each field is divided into conventional subframe and special subframe that length is 1ms that 4 length are 1ms, and each conventional subframe is made up of the conventional time slot of two 0.5ms.Special subframe is made of descending pilot frequency DwPTS, protection interval GP and 3 time slots of ascending pilot frequency UpPTS, and wherein the position of GP and length can be provided with as required, and is also proportional with the covering radius of LTE TDD system.By adjusting position and the length of GP, the also corresponding adjustment of the length of DwPTS and UpPTS is that 1ms is constant but must keep three's total length.Such frame structure is only applicable to TDD system.
In second kind of frame structure,, have 7 kinds of different sub-frame allocation forms according to the uplink and downlink timeslot ratio difference.
Fig. 3 is the sub-frame allocation form schematic diagram that LTE TDD system supports, as shown in Figure 3, the LTETDD system supports descending altogether and the ascending time slot ratio is 1:3,2:2,3:1,7:1,6:2,5:3 and descending entirely, totally 7 kinds of subframe distributive lattice formulas.
LTE has adopted the orthogonal frequency division multiplex OFDM technology, its subcarrier spacing is set at 15kHz, corresponding OFDM symbol lengths is 66.67us, for first kind frame structure, its each slot length 0.5ms, when supporting that unicast service and little covering are used, use the short CP of length as 4.7us, every time slot is made of 7 OFDM symbols; When supporting that many cell broadcaste services and big covering are used, use the long CP of length as 16.66us, this moment, each time slot was made of 6 OFDM symbols.
In above frame structure, each descending sub frame all comprises descending control signaling, and descending control signaling takies preceding 3 OFDM symbols at most.Wherein descending control signaling comprises three parts again, i.e. physical control channel format indication channel PCFICH, physical mixed automatic request retransmission indicating channel PHICH and physical downlink control channel PDCCH.
Wherein PCFICH takies continuous four the Resource Unit PRE of four groups except that frequency pilot sign in first OFDM symbol, carries 2bit information, is used for indicating the number (1～3) of the shared OFDM symbol of book frame PDCCH.PHICH is used to indicate the response message for the HARQ process of uplink, be ACK/NACK information, according to setting, can take first OFDM symbol, perhaps remove three groups of four continuous PRE after pilot tone and the shared resource of PCFICH in first three OFDM symbol.PDCCH is used for control informations such as bearing downlink dispatch, uplink scheduling are authorized, power control command, in n OFDM symbol, removes the residue PRE (1=＜n＜=3 are indicated by PCFICH) of pilot tone, PCFICH and the shared resource of PHICH before taking.
For PHICH, follow according to different uplink service model and system configuration, need be different to the HARQ response message amount of uplink transmission data bag, therefore existing system is that the shared resource of PHICH is divided into four kinds of different brackets according to demand, the basis that is configured to the maximum HARQ response messages of needs, if this moment, the PHICH resource requirement was X, its shared resource size can be divided into so: X, X/2, four kinds of different brackets of X/4, X/8, every kind of resource mapping position that grade is corresponding different.
For example, if all system users are VOIP (Voice over IP, the networking telephone) user, its upstream data is small data packets so, and all needs the HARQ process, so this moment in requisition for the PHICH resource be maximum; If the user is high-speed data and uploads the user in the system, its upstream data bag is big packet so, this moment in requisition for the PHICH resource just fewer.Therefore according to different up user models, use different PHICH resource size grades.
The PHICH resource size is also relevant with system configuration, and is for example relevant with the up-link bandwidth, if its up-link bandwidth of certain system is bigger, so required PHICH resource is also just corresponding bigger.In addition, concerning the TDD system, different uplink and downlink timeslot ratios also has decisive action to the PHICH resource size, has for example disposed more sub-frame of uplink in the TDD system, just needs more PHICH resource to carry the indication information that ascending HARQ is replied so in the descending sub frame.
For LTE TDD system, uplink and downlink timeslot ratio information is a very important information, and a lot of parameters and configuration need be determined according to uplink and downlink timeslot ratio information, therefore LTE TDD system must notify the user UE with uplink and downlink timeslot ratio information, just can communicate by letter normally.Existing uplink and downlink timeslot ratio information is notified by dynamic broadcast information SIB.The configuration information and other information (slightly concrete) that comprise TDD uplink and downlink timeslot ratio information and TDD special subframe among the SIB.SIB is by sending in the subframe 5 of Physical Downlink Shared Channel PDSCH in each radio frames, and the form of its transmission and concrete resource location are by descending scheduling signaling indication among the PDCCH in the subframe 5.That is to say that the UE PDCCH in this subframe that need decode could go out SIB according to the formats of appointment.
Because OFDM symbol that PDCCH takies and the concrete resource location that takies depend on PCFICH and PHICH, need to know the specifying information of PCFICH and PHICH before the PDCCH that therefore decodes in the OFDM symbol.Wherein, PCFICH can receive in the specific PRE position in first OFDM symbol of descending sub frame, and PCFICH can be known the OFDM symbol numbers that PDCCH takies in this descending sub frame by decoding.The specifying information of PHICH is included among the main broadcast message MIB, MIB sends by the specific time-frequency position of Physical Broadcast Channel PBCH in the subframe 0 of each radio frames, there is regulation this position in standard, the user obtains can read PBCH in this position after the down-going synchronous in cell search process, decode MIB, obtain PHICH duration information and PHICH resource size information among the MIB.
Wherein the PHICH duration is meant that PHICH accounts for 1 OFDM symbol in descending sub frame still be 3, uses 1bit to represent; The PHICH resource size is meant four kinds of different brackets of the shared resource size of PHICH, uses 2bit to represent.
UE is by the PCFICH in decoding mib information and the subframe 5, can determine the concrete resource location that PDCCH takies, it is adopted the mode of blind Detecting, attempt using 4 kinds of different PDCCH forms to decode, correct until decoding, thus the TDD system uplink and downlink timeslot ratio information in the acquisition SIB information.
The Notification Method of above-described existing TDD system uplink and downlink timeslot ratio information, TDD system uplink and downlink timeslot ratio information is notified UE as additional information by SIB, this information and PCFICH and PHICH information are relatively independent, for the FDD system, because its ascending-descending subframes number is always identical, therefore PHICH resource needed size is only relevant with up-link bandwidth and user model, according to different system bandwidths and user model the PHICH resource size is divided into four grades, adopt 2bit to represent that its granularity is enough meticulous.But for the TDD system, the PHICH resource requirement size also uplink and downlink timeslot ratio with the TDD system is relevant, therefore in the TDD system, it is meticulous inadequately to the TDD system that has multiple uplink and downlink timeslot ratio that the PHICH resource size is divided into four grades, will cause the waste of the PHICH of TDD system resource.
In addition, for the TDD system, owing to there is the asymmetric situation of uplink and downlink timeslot, for example the ratio to descending and ascending time slot shown in Figure 3 is under the situation of 1:3, in descending sub frame control information except that the down dispatch information that comprises this subframe, also comprise the scheduling grant information of other all sub-frame of uplink and other information such as power control information of all users, therefore 3 OFDM symbols are likely not enough concerning PDCCH.
Summary of the invention
The embodiment of the invention provides a kind of uplink and downlink timeslot ratio information of time division duplex system Notification Method, can divide for tdd systems provides the meticulousr automatic request retransmission indicating channel resource size of physical mixed.
The embodiment of the invention provides a kind of uplink and downlink timeslot ratio information of time division duplex system notifying device, can divide for tdd systems provides the meticulousr automatic request retransmission indicating channel resource size of physical mixed.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of uplink and downlink timeslot ratio information of time division duplex system Notification Method is characterized in that, this method comprises:
Carry out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed in main broadcast message PHICH resource size information;
By main broadcast message will with the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the information-related relation of PHICH resource size.
Preferably, describedly the automatic request retransmission indicating channel of physical mixed in main broadcast message PHICH resource size information and uplink and downlink timeslot ratio information of time division duplex system are carried out related, comprising:
The project of expression tdd systems uplink and downlink timeslot ratio is set in main broadcast message, and the different values of the project of described expression tdd systems uplink and downlink timeslot ratio are represented different tdd systems uplink and downlink timeslot ratios;
The PHICH resource size project in the main broadcast message and the project of described expression tdd systems uplink and downlink timeslot ratio are carried out related, described PHICH resource size repertory is shown in the PHICH resource size under the current tdd systems uplink and downlink timeslot ratio.
Preferably, this method further comprises:
2 bit information that physical control channel format indication channel PCFICH is carried are associated with uplink and downlink timeslot ratio information of time division duplex system, and described 2 bit information are illustrated in the orthogonal frequency division multiplex OFDM number of symbols that Physical Downlink Control Channel takies in this descending sub frame under the current tdd systems uplink and downlink timeslot ratio;
The 2 bit information notifying user equipment that the PCFICH that will be associated with uplink and downlink timeslot ratio information of time division duplex system carries.
Preferably, describedly the automatic request retransmission indicating channel of physical mixed in main broadcast message PHICH resource size information and uplink and downlink timeslot ratio information of time division duplex system are carried out related, comprising:
Increase the number of bits of PHICH resource size project value, carry out related with the value of PHICH resource size project the tdd systems uplink and downlink timeslot ratio, by the value of PHICH resource size project and the corresponding relation of uplink and downlink timeslot ratio information of time division duplex system, expression tdd systems uplink and downlink timeslot ratio.
A kind of uplink and downlink timeslot ratio information of time division duplex system notifying device, this device comprises:
The associating information module is used for carrying out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed of main broadcast message PHICH resource size information;
First notification module, be used for by main broadcast message will with the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the information-related relation of PHICH resource size.
As seen from the above technical solutions, of the present inventionly thisly carry out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed in main broadcast message PHICH resource size information, by main broadcast message will with the method and the device of the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the information-related relation of PHICH resource size, PHICH resource size information is associated with the tdd systems uplink and downlink timeslot ratio, thereby can divide for the TDD system provides meticulousr PHICH resource size, avoid the PHICH wasting of resources.Simultaneously, owing to PCFICH information can be associated with uplink and downlink timeslot ratio information of time division duplex system, therefore can make PDCCH takies in the descending sub frame OFDM number of symbols more than 3, thereby solve under some tdd systems uplink and downlink timeslot ratio, for the not enough problem of OFDM number of symbols of PDCCH use.In addition, other a lot of information can be associated with uplink and downlink timeslot ratio information of time division duplex system, thereby reduce signaling consumption, and reduce system complexity.
Description of drawings
The first kind frame structure schematic diagram that Fig. 1 supports for existing LTE system;
The second class frame structure schematic diagram that Fig. 2 supports for existing LTE system;
Fig. 3 is the sub-frame allocation form schematic diagram that LTE TDD system supports;
Fig. 4 is the uplink and downlink timeslot ratio information of time division duplex system Notification Method flow chart of the embodiment of the invention;
Fig. 5 is the uplink and downlink timeslot ratio information of time division duplex system notifying device structure chart of the embodiment of the invention one;
Fig. 6 is the uplink and downlink timeslot ratio information of time division duplex system notifying device structure chart of the embodiment of the invention two.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The embodiment of the invention mainly is that the present invention sends by TDD system uplink and downlink timeslot ratio information is placed among the main broadcast message MIB, PHICH information among the MIB is associated with TDD system uplink and downlink timeslot ratio information, thereby can divides for tdd systems provide the meticulousr automatic request retransmission indicating channel resource size of physical mixed.
Fig. 4 is the uplink and downlink timeslot ratio information of time division duplex system Notification Method flow chart of the embodiment of the invention, and as shown in Figure 4, this flow process specifically comprises step:
Wherein in the step 401, carry out related with uplink and downlink timeslot ratio information of time division duplex system the PHICH resource size information in the main broadcast message, a variety of methods can be arranged, such as the project of in main broadcast message, adding expression tdd systems uplink and downlink timeslot ratio, the different values of described project are represented the time slot ratio of different tdd systems, it is the sub-frame allocation form, and PHICH resource size project is carried out related with TDD system uplink and downlink timeslot ratio, be illustrated in the uplink and downlink timeslot ratio of current tdd systems, i.e. PHICH resource size under the sub-frame allocation form.
Wherein, the different values of new projects and TDD system uplink and downlink timeslot ratio, promptly the corresponding relation of the sub-frame allocation form shown in Fig. 3 can be as shown in table 1:
| TDD system uplink and downlink timeslot ratio project value (3 bit) | TDD system sub-frame allocation form sequence number |
| 000 | To TDD system invalid (or expression FDD) |
| 001 | 1 |
| 010 | 2 |
| 011 | 3 |
| 100 | 4 |
| 101 | 5 |
| 110 | 6 |
| 111 | 7 |
Table 1, TDD system uplink and downlink timeslot ratio project value and TDD system sub-frame allocation form sequence number mapping table
More than in the table, the project value of the expression tdd systems uplink and downlink timeslot ratio that adds is represented by 3 bits, one of them value is represented that current system is a frequency division duplex system or is represented that current tdd systems uplink and downlink timeslot ratio is invalid, in other 7 different values, each value is represented a kind of TDD system uplink and downlink timeslot ratio.TDD system uplink and downlink timeslot ratio is to represent with its corresponding sub-frame allocation form sequence number in the table.Here value and sub-frame allocation form sequence number are as long as guarantee correspondence one by one, and specifically corresponding which sequence number of which value can be provided with arbitrarily as required.
For the FDD system, current system is the FDD system if value is 000 expression, then can be so that further comprised the effective information of distinguishing FDD and TDD among the MIB, and need not to adopt additive method to carry out blind Detecting.Perhaps, do not comprise the time slot ratio indication item in the MIB of FDD system, its mib information content and prior art are consistent, and the prerequisite of doing like this is to have known that before reading MIB current system is FDD or TDD, otherwise can cause the MIB read error.
Owing to comprised timeslot ratio information among the MIB, the concrete implication of the entrained 2bit information of PCFICH just can associate with time slot ratio so, is illustrated in the OFDM number of symbols that PDCCH takies in this descending sub frame under the current tdd systems uplink and downlink timeslot ratio; This is that the PCFICH indication information can have different explanations under the different time-gap ratio, makes under the prerequisite of not expanding the PCFICH bit, and the shared OFDM number of symbols of the PDCCH of TDD system can surpass 3 that stipulate in the existing standard.
For example, under certain time slot ratio, it is as shown in table 2 that the information of PCFICH and PDCCH take OFDM symbolic number corresponding relation:
| PCFICH | PDCCH takies the OFDM symbolic number |
| 00 | Retention |
| 01 | 1 |
| 10 | 2 |
| 11 | 3 |
Table 2, under certain time slot ratio, the information of PCFICH and PDCCH take OFDM symbolic number mapping table
Under the another kind of time slot ratio, it is as shown in table 3 that the information of PCFICH and PDCCH take OFDM symbolic number corresponding relation:
| PCFICH | PDCCH takies the OFDM symbolic number |
| 00 | 2 |
| 01 | 3 |
| 10 | 4 |
| 11 | 5 |
Table 3, under the another kind of time slot ratio, the information of PCFICH and PDCCH take OFDM symbolic number mapping table
For different TDD uplink and downlink timeslot ratios, the pairing PDCCH of PCFICH value takies the OFDM symbolic number and can set according to the actual requirements.
In addition, can also further TDD special subframe configuration information among the dynamic broadcast information SIB and the project that increases newly be carried out relatedly, TDD special subframe configuration information is illustrated in the special subframe configuration under the current TDD system uplink and downlink timeslot ratio.The TDD special subframe configuration information that will be associated with TDD system uplink and downlink timeslot ratio information is by the SIB notifying user equipment.
Perhaps further with this sub-district Random Access Channel configuration indication information among the dynamic broadcast information SIB with carry out relatedly with the project that increases newly, this sub-district Random Access Channel that this sub-district Random Access Channel configuration indication information is illustrated under the current TDD system uplink and downlink timeslot ratio disposes; This sub-district Random Access Channel configuration indication information that will be associated with TDD system uplink and downlink timeslot ratio information is by the SIB notifying user equipment.Only need the time-frequency domain position of the available random access channel under the indication current time slots ratio to get final product so among the SIB, thereby reduce the bit number that the configuration of indication Random Access Channel needs.
Certainly, except new project is set in MIB, can also increase the number of bits of PHICH resource size project value, carry out related with the value of PHICH resource size project the tdd systems uplink and downlink timeslot ratio, by the value of PHICH resource size project and the corresponding relation of uplink and downlink timeslot ratio information of time division duplex system, implicit expression tdd systems uplink and downlink timeslot ratio, and will be according to the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the implicit expression of PHICH resource size project by MIB.
For example represent the PHICH resource size with 4bit, the implication relation of PHICH value and PHICH resource size and TDD uplink and downlink timeslot ratio is as shown in table 4:
Table 4, the implication relation table of PHICH value and PHICH resource size and TDD uplink and downlink timeslot ratio
Do not get rid of the identical situation of value of two different Xi in the table 4, concrete corresponding relation can be set as required.
In addition, the identical value merging of Xi can reduce PHICH resource size indication bit number in the table if will go up, for example can indicate with 3bit, but can not unique definite time slot ratio.As shown in table 5, wherein X1～X8 does not have repetition values.
| The PHICH value | The PHICH resource size |
| 000 | X1 |
| 001 | X2 |
| 010 | X3 |
| 011 | X4 |
| 100 | X5 |
| 101 | X6 |
| 110 | X7 |
| 111 | X8 |
Table 5, PHICH value and PHICH resource size relation table
PHICH can not unique definite time slot ratio in the table 5, and corresponding relation concrete and time slot ratio can be set as required.
More than introduce the uplink and downlink timeslot ratio information of time division duplex system Notification Method of the embodiment of the invention, will introduce the uplink and downlink timeslot ratio information of time division duplex system notifying device of the embodiment of the invention below in detail.
Fig. 5 is the uplink and downlink timeslot ratio information of time division duplex system notifying device structure chart of the embodiment of the invention one, and as shown in Figure 5, this device comprises the associating information module 501 and first notification module 502.
Associating information module 501 is used for carrying out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed of main broadcast message PHICH resource size information.
Wherein, first associative cell 502 is used for adding in main broadcast message the project of expression tdd systems uplink and downlink timeslot ratio, and the different values of described project are represented different tdd systems uplink and downlink timeslot ratios; The PHICH resource size project in the main broadcast message and the project of described expression tdd systems uplink and downlink timeslot ratio are carried out related, described PHICH resource size project PHICH resource size repertory is shown in the PHICH resource size under the current tdd systems uplink and downlink timeslot ratio.Specifically, first associative cell 502 is that the project value of the expression tdd systems uplink and downlink timeslot ratio that will add is represented by 3 bits, one of them value is represented that current system is a frequency division duplex system or is represented that current tdd systems uplink and downlink timeslot ratio is invalid, in other 7 different values, each value is represented a kind of tdd systems uplink and downlink timeslot ratio.
Preferably, associating information module 501 may further include second associative cell 504.
Second associative cell 504 is used for 2 bit information that physical control channel format indication channel PCFICH carries are associated with uplink and downlink timeslot ratio information of time division duplex system, and described 2 bit information are illustrated in the OFDM number of symbols that Physical Downlink Control Channel takies in this descending sub frame under the current tdd systems uplink and downlink timeslot ratio.
Correspondingly, the uplink and downlink timeslot ratio information of time division duplex system notifying device further comprises second notification module 507.
The 2 bit information notifying user equipment that the PCFICH that second notification module 507 is used for being associated with uplink and downlink timeslot ratio information of time division duplex system carries.
Preferably, associating information module 501 may further include the 3rd associative cell 505.
The 3rd associative cell 505 is used for the special subframe configuration information of dynamic broadcast information SIB and uplink and downlink timeslot ratio information of time division duplex system are carried out related, and the special subframe configuration information is illustrated in the special subframe configuration under the current tdd systems uplink and downlink timeslot ratio.
Correspondingly, the uplink and downlink timeslot ratio information of time division duplex system notifying device further comprises the 3rd notice module 508.
The special subframe configuration information that the 3rd notice module 508 is used for being associated with uplink and downlink timeslot ratio information of time division duplex system is by the SIB notifying user equipment.
Preferably, associating information module 501 may further include the 4th associative cell 506.
The 4th associative cell 506 is used for the sub-district Random Access Channel configuration indication information of dynamic broadcast information SIB and uplink and downlink timeslot ratio information of time division duplex system are carried out related, and the sub-district Random Access Channel that sub-district Random Access Channel configuration indication information is illustrated under the current tdd systems uplink and downlink timeslot ratio disposes.
Correspondingly, the uplink and downlink timeslot ratio information of time division duplex system notifying device comprises that further four-way knows module 509.
Four-way knows that the sub-district Random Access Channel configuration indication information that module 509 is used for being associated with uplink and downlink timeslot ratio information of time division duplex system passes through the SIB notifying user equipment.
Fig. 6 is the uplink and downlink timeslot ratio information of time division duplex system notifying device structure chart of the embodiment of the invention two, and as shown in Figure 6, this device comprises the associating information module 601 and first notification module 602.
Wherein comprise the 5th associative cell 603 in the associating information module 601.
The 5th associative cell 603 is used to increase the number of bits of PHICH resource size project value, carry out related with the value of PHICH resource size project the tdd systems uplink and downlink timeslot ratio, by the value of PHICH resource size project and the corresponding relation of uplink and downlink timeslot ratio information of time division duplex system, implicit expression tdd systems uplink and downlink timeslot ratio.Specifically, the 5th associative cell 601 is increased to 3 bits or 4 bits with the number of bits of PHICH resource size project value.
By the above embodiments as seen, of the present inventionly thisly carry out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed in main broadcast message PHICH resource size information, by main broadcast message will with the method and the device of the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the information-related relation of PHICH resource size, PHICH resource size information is associated with the tdd systems uplink and downlink timeslot ratio, thereby can divide for the TDD system provides meticulousr PHICH resource size, avoid the PHICH wasting of resources.Simultaneously, owing to PCFICH information can be associated with uplink and downlink timeslot ratio information of time division duplex system, therefore can make PDCCH takies in the descending sub frame OFDM number of symbols more than 3, thereby solve under some tdd systems uplink and downlink timeslot ratio, for the not enough problem of OFDM number of symbols of PDCCH use.In addition, other a lot of information can be associated with uplink and downlink timeslot ratio information of time division duplex system, thereby reduce signaling consumption, and reduce system complexity.
Institute is understood that; the above is a better embodiment of the present invention only, and is not intended to limit the scope of the invention, and is within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1, a kind of uplink and downlink timeslot ratio information of time division duplex system Notification Method is characterized in that, this method comprises:
Carry out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed in main broadcast message PHICH resource size information;
By main broadcast message will with the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the information-related relation of PHICH resource size.
2, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 1, it is characterized in that, describedly the automatic request retransmission indicating channel of physical mixed in main broadcast message PHICH resource size information and uplink and downlink timeslot ratio information of time division duplex system are carried out related, comprising:
The project of expression tdd systems uplink and downlink timeslot ratio is set in main broadcast message, and the different values of the project of described expression tdd systems uplink and downlink timeslot ratio are represented different tdd systems uplink and downlink timeslot ratios;
The PHICH resource size project in the main broadcast message and the project of described expression tdd systems uplink and downlink timeslot ratio are carried out related, described PHICH resource size repertory is shown in the PHICH resource size under the current tdd systems uplink and downlink timeslot ratio.
3, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 2, it is characterized in that, the value of described tdd systems uplink and downlink timeslot ratio project is represented by 3 bits, one of them value is represented that current system is a frequency division duplex system or is represented that current tdd systems uplink and downlink timeslot ratio is invalid, in other 7 different values, each value is represented a kind of tdd systems uplink and downlink timeslot ratio.
4, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 2 is characterized in that, this method further comprises:
2 bit information that physical control channel format indication channel PCFICH is carried are associated with uplink and downlink timeslot ratio information of time division duplex system, and described 2 bit information are illustrated in the orthogonal frequency division multiplex OFDM number of symbols that Physical Downlink Control Channel takies in this descending sub frame under the current tdd systems uplink and downlink timeslot ratio;
The 2 bit information notifying user equipment that the PCFICH that will be associated with uplink and downlink timeslot ratio information of time division duplex system carries.
5, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 2 is characterized in that, this method further comprises:
Tdd systems special subframe configuration information among the dynamic broadcast information SIB and uplink and downlink timeslot ratio information of time division duplex system are carried out related, tdd systems special subframe configuration information is illustrated in the special subframe configuration under the current tdd systems uplink and downlink timeslot ratio;
The special subframe configuration information that will be associated with uplink and downlink timeslot ratio information of time division duplex system is by the SIB notifying user equipment.
6, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 2 is characterized in that, this method further comprises:
Sub-district Random Access Channel among dynamic broadcast information SIB configuration indication information and uplink and downlink timeslot ratio information of time division duplex system are carried out related, the sub-district Random Access Channel that sub-district Random Access Channel configuration indication information is illustrated under the current tdd systems uplink and downlink timeslot ratio disposes;
This sub-district Random Access Channel configuration indication information that will be associated with uplink and downlink timeslot ratio information of time division duplex system is by the SIB notifying user equipment.
7, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 1, it is characterized in that, describedly the automatic request retransmission indicating channel of physical mixed in main broadcast message PHICH resource size information and uplink and downlink timeslot ratio information of time division duplex system are carried out related, comprising:
Increase the number of bits of PHICH resource size project value, carry out related with the value of PHICH resource size project the tdd systems uplink and downlink timeslot ratio, by the value of PHICH resource size project and the corresponding relation of uplink and downlink timeslot ratio information of time division duplex system, expression tdd systems uplink and downlink timeslot ratio.
8, uplink and downlink timeslot ratio information of time division duplex system Notification Method as claimed in claim 7 is characterized in that, the number of bits of described increase PHICH resource size project value comprises:
The number of bits of PHICH resource size project value is increased to 3 bits or 4 bits.
9, a kind of uplink and downlink timeslot ratio information of time division duplex system notifying device is characterized in that, this device comprises:
The associating information module is used for carrying out related with uplink and downlink timeslot ratio information of time division duplex system the automatic request retransmission indicating channel of the physical mixed of main broadcast message PHICH resource size information;
First notification module, be used for by main broadcast message will with the uplink and downlink timeslot ratio information of time division duplex system notifying user equipment of the information-related relation of PHICH resource size.
10, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 9 is characterized in that, described associating information module comprises:
First associative cell is used in main broadcast message the project of representing the tdd systems uplink and downlink timeslot ratio being set, and the different values of described project are represented different tdd systems uplink and downlink timeslot ratios;
The PHICH resource size project in the main broadcast message and the project of described expression tdd systems uplink and downlink timeslot ratio are carried out related, described PHICH resource size repertory is shown in the PHICH resource size under the current tdd systems uplink and downlink timeslot ratio.
11, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 10, it is characterized in that, described first associative cell, the project value of the expression tdd systems uplink and downlink timeslot ratio that is provided with is represented by 3 bits, one of them value is represented that current system is a frequency division duplex system or is represented that current tdd systems uplink and downlink timeslot ratio is invalid, in other 7 different values, each value is represented a kind of tdd systems uplink and downlink timeslot ratio.
12, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 10 is characterized in that, described associating information module further comprises:
Second associative cell, be used for 2 bit information that physical control channel format indication channel PCFICH carries are associated with uplink and downlink timeslot ratio information of time division duplex system, described 2 bit information are illustrated in the OFDM number of symbols that Physical Downlink Control Channel takies in this descending sub frame under the current tdd systems uplink and downlink timeslot ratio;
Described uplink and downlink timeslot ratio information of time division duplex system notifying device further comprises:
The 2 bit information notifying user equipment that second notification module, the PCFICH that is used for being associated with uplink and downlink timeslot ratio information of time division duplex system carry.
13, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 10 is characterized in that, described associating information module further comprises:
The 3rd associative cell, be used for the special subframe configuration information of dynamic broadcast information SIB and uplink and downlink timeslot ratio information of time division duplex system are carried out related, the special subframe configuration information is illustrated in the special subframe configuration under the current tdd systems uplink and downlink timeslot ratio;
Described uplink and downlink timeslot ratio information of time division duplex system notifying device further comprises:
The 3rd notice module, the special subframe configuration information that is used for being associated with uplink and downlink timeslot ratio information of time division duplex system is by the SIB notifying user equipment.
14, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 10 is characterized in that, described associating information module further comprises:
The 4th associative cell, be used for the sub-district Random Access Channel configuration indication information of dynamic broadcast information SIB and uplink and downlink timeslot ratio information of time division duplex system are carried out related, the sub-district Random Access Channel that sub-district Random Access Channel configuration indication information is illustrated under the current tdd systems uplink and downlink timeslot ratio disposes;
Described uplink and downlink timeslot ratio information of time division duplex system notifying device further comprises:
Four-way is known module, and the sub-district Random Access Channel configuration indication information that is used for being associated with uplink and downlink timeslot ratio information of time division duplex system is by the SIB notifying user equipment.
15, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 9 is characterized in that, described associating information module comprises:
The 5th associative cell, be used to increase the number of bits of PHICH resource size project value, carry out related with the value of PHICH resource size project the tdd systems uplink and downlink timeslot ratio, by the value of PHICH resource size project and the corresponding relation of uplink and downlink timeslot ratio information of time division duplex system, expression tdd systems uplink and downlink timeslot ratio.
16, uplink and downlink timeslot ratio information of time division duplex system notifying device as claimed in claim 9 is characterized in that, described the 5th associative cell is increased to 3 bits or 4 bits with the number of bits of PHICH resource size project value.
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