CN101378286A - Method and apparatus for indicating scheduling information - Google Patents
Method and apparatus for indicating scheduling information Download PDFInfo
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- CN101378286A CN101378286A CNA2007101211635A CN200710121163A CN101378286A CN 101378286 A CN101378286 A CN 101378286A CN A2007101211635 A CNA2007101211635 A CN A2007101211635A CN 200710121163 A CN200710121163 A CN 200710121163A CN 101378286 A CN101378286 A CN 101378286A
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Abstract
The embodiment of the invention provides a transmitting method of a piece of scheduling information, which comprises the steps of: establishing the mapping relation of the scheduling information and one or multiple sequential downlink time slots; and transmitting the scheduling information to a terminal according to the mapping relation. The embodiment of the invention also provides a transmitting device, comprising a mapping module used for mapping the scheduling information into one or more sequential downlink time slots and a transmitting module used for transmitting the scheduling information mapped by the mapping module to the terminal. The embodiment of the invention instructs the time slot needs to be monitored by the terminal according to the configuration control field in a broadcast message, which solves the problem of sever power consumption caused by monitoring all time slots by the terminal, and is in favor of developing the broadcast multicast service. The embodiment of the invention also configures the scheduling information through the broadcast message, and nests for the identifications of multi-user transmission time interval and the like so as to effectively reduce the signaling cost of the scheduling information.
Description
Technical field
The present invention relates to moving communicating field, especially a kind of sending method of schedule information and device.
Background technology
(Time Division-Synchronous Code DivisionMultiple Access, TD-SCDMA) system is the typical TDD of cover and code division multiple access (CodeDivision Multiple Access, a CDMA) system in the TD SDMA access.In the TD-SCDMA system, a frame is 10ms, is further divided into two subframes, and each subframe is divided into 7 time slots again, comprises continuous several ascending time slots and continuous several descending time slots in 7 time slots, can be according to the ratio of system's concrete configuration uplink and downlink timeslot.As shown in Figure 1, subframe structure schematic diagram for the TD-SCDMA system of prior art, subframe comprises 3 continuous ascending time slot UL, continuous 4 descending time slot DL and two special time slots, be descending navigation time slot DwPTS and up navigation time slot UpPTS, and the switching point GP of a downstream-to-upstream and one are up to descending switching point GP.
As shown in Figure 2, improved frame structure schematic diagram for the TD-SCDMA system of prior art, one frame is 10ms, a frame is divided into two subframes, each subframe comprises 8 descending time slots (TS0~TS7) and 6 ascending time slots (TS8~TS13), a synchronous channel SCH that is positioned at before the descending TS0 time slot, and the switching point DUSP of a downstream-to-upstream and one are up to descending switching point UDSP.
(Orthogonal Frequency Division Multiplex, OFDM) in the system, the user needs the resource of the up or descending temporal frequency of system assignment, is the OFDM symbol on the time, is subcarrier on the frequency at OFDM.Physically continuous or continuous in logic a period of time frequency resource is called Resource Block.Physically running time-frequency resource is meant the OFDM symbol and the subcarrier of actual physics, and running time-frequency resource is meant the OFDM symbol and the subcarrier of logic that can be corresponding with running time-frequency resource physically by certain mapping relations in logic.Several physically or OFDM symbol in logic and subcarrier constitute basic resource blocks, be Resource Block minimum in the system, other Resource Block all is made up of basic resource blocks, is the integral multiple of basic resource blocks.Transmission Time Interval is by at least one basic Transmission Time Interval (PrimaryTransmission Time Interval, PTTI) form, and basic Transmission Time Interval is represented the transmission time of transmitting user data minimum, the time resource that user's minimum takies, comprise at least one OFDM symbol, form by at least one time slot.
Schedule information is a kind of more special expense in the system, mainly be included as the information and the out of Memory of a user or one group of user resource allocation, for example user's sign, modulation coding mode sign etc., schedule information need be notified the user by schedule information by the base station.
In the IEEE802.16 standard, schedule information is called as descending mapping (DL-MAP) and up mapping (UL-MAP).This standard has also proposed the mapping mode of a kind of schedule information and physical resource, and promptly a frame is 5ms, comprises a plurality of OFDM symbols, does not divide time slot in the frame structure.The physical resource of schedule information mapping is indicated by 8 bits of FCH (Frame Control Header, frame control head portion), has 256 kinds of possible indication informations.Terminal goes to receive the information of DL-MAP and UP-MAP by the indication of FCH.
The mapping mode of this schedule information and physical resource needs whole DL-MAP of terminal monitoring and UL-MAP, and to obtain the schedule information of self, therefore, the terminal power consumption is serious, also is unfavorable for carrying out of BroadCast MultiCast Service.
In the IEEE802.16 standard, the content of schedule information DL-MAP and UL-MAP comprises traffic identifier CID, resource identification and modulation coding mode sign etc.Owing to there is not a divide resource piece, resource identification adopts subcarrier and the original position of OFDM symbol and the method for side-play amount, and therefore, the required bit number of each sign is a lot of in the schedule information.Simultaneously, may there be a plurality of streams in a terminal, and this causes traffic identifier to comprise traffic identifier two parts of terminal iidentification and terminal, has further increased the expense of schedule information.Usually, the schedule information expense of a user's of indication a resource is bigger, needs 40~50 bits.
Summary of the invention
The embodiment of the invention provides a kind of sending method and device of schedule information, with the signaling consumption of reduction system when sending schedule information.
The embodiment of the invention provides a kind of sending method of schedule information, comprising:
Set up the mapping relations of schedule information and or continuous a plurality of descending time slots;
According to described mapping relations described schedule information is sent to terminal.
The embodiment of the invention also provides a kind of dispensing device, comprising:
Mapping block is used for schedule information is mapped in one or the continuous a plurality of descending time slots;
Sending module is used for the schedule information of described mapping block mapping is sent to terminal.
The embodiment of the invention is by setting up the mapping relations of schedule information and or continuous a plurality of descending time slots, and according to above-mentioned mapping relations above-mentioned schedule information sent to terminal, effectively reduced the signaling consumption of system when sending schedule information.
Description of drawings
Fig. 1 is the subframe structure schematic diagram of the TD-SCDMA system of prior art;
Fig. 2 is the improved frame structure schematic diagram of the TD-SCDMA system of prior art;
Fig. 3 is the flow chart of the sending method of embodiment of the invention schedule information;
Fig. 4 is the subframe structure schematic diagram of the embodiment of the invention one;
Fig. 5 is the frame structure schematic diagram of the embodiment of the invention two;
Fig. 6 is the subframe structure schematic diagram of the embodiment of the invention two;
Fig. 7 is the schematic diagram of the broadcast of the embodiment of the invention;
Fig. 8 is the schedule information schematic diagram of dominance user/user's group of the embodiment of the invention;
Fig. 9 is the schedule information schematic diagram of hidden customer/user's group of the embodiment of the invention;
Figure 10 is the multi-user's of the embodiment of the invention the schedule information schematic diagram of the nested sign of Transmission Time Interval;
Figure 11 is the dispensing device schematic diagram of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention is in the ofdm system of TDD, proposes a kind of indicating means of schedule information efficiently, to reduce the power consumption of terminal in the unit interval, reduces the signaling consumption of schedule information simultaneously.
As shown in Figure 3, the flow chart for the sending method of embodiment of the invention schedule information specifically comprises the steps:
Fig. 4 is the subframe structure schematic diagram of the embodiment of the invention one.Transmission Time Interval in the present embodiment is a basic Transmission Time Interval, and a basic Transmission Time Interval is a time slot.As shown in Figure 4, ((TSK+1~TSN), synchronous channel SCH, the descending time slot switching point UDSP to the switching point DUSP of ascending time slot and ascending time slot to descending time slot forms for TS0~TSK), (N-K) individual ascending time slot by (K+1) individual descending time slot for subframe.The physical resource that schedule information is shone upon is time slot TS0 and time slot TS1.Schedule information among the time slot TS0 can be indicated time slot TS0 self and any one follow-up Transmission Time Interval of time slot TS0, i.e. time slot TS0 any one time slot to the time slot TSN; Schedule information among the time slot TS1 can be indicated time slot TS1 self and any one follow-up Transmission Time Interval of time slot TS1, i.e. time slot TS1 any one time slot to the time slot TSN.
As shown in Figure 5, be the frame structure schematic diagram of the embodiment of the invention two.A frame is 10ms, comprise two subframes, ((TS8~TS13), synchronous channel SCH, the descending time slot switching point UDSP to the switching point DUSP of ascending time slot and ascending time slot to descending time slot forms for TS0~TS7), 6 ascending time slots by 8 descending time slots for subframe.The supposing the system bandwidth is 5M, comprises 300 available subcarriers, and then according to system's predefine, the physical resource that broadcast takies is time slot TS0 and time slot TS1.
Fig. 6 is the subframe structure schematic diagram of the embodiment of the invention two.The downlink transfer time interval in the present embodiment is a time slot, and the uplink time interval is two continuous time slots, and promptly time slot TS8 and time slot TS9 are a Transmission Time Interval, and the rest may be inferred.As shown in Figure 6, the physical resource that shines upon of schedule information is time slot TS0 and time slot TS1.Schedule information among the time slot TS0 can be indicated time slot TS0 self and any one follow-up Transmission Time Interval of time slot TS0; Schedule information among the time slot TS1 can be indicated time slot TS1 self and any one follow-up Transmission Time Interval of time slot TS1.
The embodiment of the invention utilizes the configuration field in the broadcast to come the mapping relations of configuration schedules information and physical resource, the expense of this configuration field is 2 bits, simultaneously, whether to some extent utilize the physical resource that the configuration adjustment field indication schedule information in the broadcast is shone upon to compare adjustment with last subframe, the expense that field is adjusted in this configuration is 1 bit.As shown in Figure 7, be the broadcast schematic diagram of the embodiment of the invention.Accordingly, table 1 is the content and the implication table of comparisons of the configuration field of this broadcast, and table 2 is the content and the implication table of comparisons that field is adjusted in the configuration of this broadcast.
Table 1
The configuration field content of broadcast | Implication |
00 | Schedule information takies the resource of the non-broadcast of time slot TS0 |
01 | Schedule information takies the resource of the non-broadcast of time slot TS0 and time slot TS1 |
10 | Schedule information takies the resource of the non-broadcast of time slot TS0, time slot TS1, and whole resources of time slot TS2 |
11 | Schedule information takies the resource of the non-broadcast of time slot TS0, time slot TS1, and whole resources of time slot TS2, time slot TS3 |
As shown in table 1, the content of the configuration field in the broadcast can be 00,01,10 or 11, and these four kinds of contents corresponding respectively the different mappings of schedule information and physical resource concern.For example, this field contents is 00, represents that then schedule information is mapped among the time slot TS0, takies the running time-frequency resource of the non-broadcast among the time slot TS0.And for example, this field contents is 11, represents that then schedule information is mapped among time slot TS0, time slot TS1, time slot TS2 and the time slot TS3, takies the running time-frequency resource of the non-broadcast among time slot TS0 and the time slot TS1, and the whole resources among time slot TS2 and the TS3.
Understandable, if the configuration field in the broadcast is expanded, it will be more then utilizing the schedule information that this field can dispose and the mapping relations of physical resource.For example, configuration field is expanded to 3 bits, then the mapping relations of schedule information that can dispose and physical resource have 8 kinds.In addition, the cycle of issuing to the schedule information and the mapping relations of physical resource cycle that is configured and the broadcast message that disposes these mapping relations is consistent.
Table 2
Field contents is adjusted in the configuration of broadcast | The |
1 | The time slot that terminal need be monitored changes |
0 | The time slot that terminal need be monitored is constant |
As shown in table 2, the content that field is adjusted in the configuration in the broadcast can be 1 or 0.Also do not obtain its corresponding user ID in the initial time section of user access network, therefore, terminal need be monitored whole time slots to obtain the schedule information of oneself.After the user obtained corresponding sign, whether the physical resource that the indication field in the broadcast will indicate schedule information to shine upon was compared with last subframe and is adjusted to some extent.If it is 1 that the content of field is adjusted in configuration, then expression is compared with the mapping relations of physical resource in last subframe with schedule information, and both adjust at the mapping relations in current subframe, and promptly the time slot that need monitor of terminal changes.At this moment, terminal need be monitored whole time slots to obtain the schedule information of oneself.If it is 0 that the content of field is adjusted in configuration, then expression is compared with the mapping relations of physical resource in last subframe with schedule information, and both do not adjust at the mapping relations in current subframe, and promptly the time slot that need monitor of terminal is constant.At this moment, terminal only needs to monitor the schedule information that can obtain oneself according to the time slot of monitoring in the last subframe.As seen, in embodiments of the present invention, terminal is adjusted the time slot that field determines that needs are monitored according to the configuration in the broadcast, and need not to monitor whole time slots, thereby has realized saving the beneficial effect of terminal power consumption.
In embodiments of the present invention, schedule information can comprise message identifier, user/user's group id, Transmission Time Interval sign, Resource Block sign and out of Memory, as modulation coding mode sign etc., these sequencings that are identified in the message of schedule information can be adjusted.
The message identifier of schedule information is used to represent the type of message of schedule information.
User/user's group id is used to user or the user's group of representing that schedule information is dispatched.This sign can be a dominance sign, promptly directly identifies by a certain field in the schedule information, also can be recessive sign, promptly with scrambler to the whole scrambling of schedule information as sign.
The Transmission Time Interval sign is used to the shared transmission period of running time-frequency resource of representing that scheduling message shines upon.This sign is to obtain after the Transmission Time Interval to different time locations, different length is numbered.
The Resource Block sign is used for representing scheduling message has taken which Resource Block of its transmission period.This sign obtains after the different frequency resource is numbered.For example, the Resource Block of m bit sign can be represented a m power Resource Block of 2.
Fig. 8 is the schedule information schematic diagram of dominance user/user's group of the embodiment of the invention, and the expense of each field is as shown in table 3 in this schedule information.
Fig. 9 is the schedule information schematic diagram of hidden customer/user's group of the embodiment of the invention, and the expense of each field is as shown in table 4 in this schedule information.
Table 3
Field | Expense (bit) |
Message identifier | 4 |
User ID | 11 |
The Transmission Time Interval sign | 3 |
The Resource Block sign | 6 |
The modulation coding mode sign | 4 |
Table 4
Field | Expense (bit) |
Message identifier | 4 |
The Transmission Time Interval sign | 3 |
The Resource Block sign | 6 |
The modulation coding mode sign | 4 |
Therefore in embodiments of the present invention, the expense of a dominance user's schedule information is 28 bits, and the expense of the schedule information of a hidden customer is 17 bits.
The embodiment of the invention can also be in schedule information, Transmission Time Interval to the multi-user carries out nested, that is to say that will be nested in the user in the Transmission Time Interval in the schedule information and transmit, the shared Transmission Time Interval information of promptly a plurality of users only needs transmission primaries.As shown in figure 10, be the multi-user's of the embodiment of the invention the nested schedule information schematic diagram of Transmission Time Interval sign.The expense of each field is as shown in table 5 in this schedule information.As seen, the Transmission Time Interval of 3 bits is designated N the expense that the user is shared, the promptly average individual bit of each CU (3/N), and therefore, on average the expense of each user's schedule information is [25+ (3/N)] individual bit.Along with the increase of number of users N, on average the expense of each user's schedule information will reduce gradually.As seen, the Transmission Time Interval to the multi-user carries out the signaling consumption that nested method can be saved schedule information.
Table 5
Field | Expense (bit) |
The Transmission Time Interval sign | 3 |
From 1 to N user | |
Message identifier | 4 |
User ID | 11 |
The Resource Block sign | 6 |
The modulation coding mode sign | 4 |
} |
Understandable, the embodiment of the invention can also be in schedule information, multi-user's message identifier is carried out nested, that is to say, a plurality of users that message identifier is identical are nested in the schedule information transmits, and the shared message identifier of promptly a plurality of users only needs transmission primaries.The expense of each field is as shown in table 6 in the nested schedule information of multi-user's message identifier.As seen, the message identifier of 4 bits is N the expense that the user is shared, the promptly average individual bit of each CU (4/N), and therefore, on average the expense of each user's schedule information is [25+ (4/N)] individual bit.Along with the increase of number of users N, on average the expense of each user's schedule information will reduce gradually.As seen, multi-user's message identifier is carried out the signaling consumption that nested method can be saved schedule information.
Table 6
Field | Expense (bit) |
Message identifier | 4 |
From 1 to N user |
The Transmission Time Interval sign | 3 |
User ID | 11 |
The Resource Block sign | 6 |
The modulation coding mode sign | 4 |
} |
Understandable, the embodiment of the invention can also be in schedule information, modulation coding mode to the multi-user carries out nested, that is to say, modulation coding mode is identified identical a plurality of users be nested in the schedule information and transmit, the shared modulation coding mode sign of promptly a plurality of users only needs a transmission primaries.The expense of each field is as shown in table 7 in the nested schedule information of multi-user's modulation coding mode.As seen, the modulation coding mode identification field of 4 bits is N the expense that the user is shared, the promptly average individual bit of each CU (4/N), and therefore, on average the expense of each user's schedule information is [25+ (4/N)] individual bit.Along with the increase of number of users N, on average the expense of each user's schedule information will reduce gradually.As seen, the modulation coding mode to the multi-user carries out the signaling consumption that nested method can be saved schedule information.
Table 6
Field | Expense (bit) |
The modulation coding mode sign | 4 |
From 1 to N user | |
Message identifier | 4 |
The Transmission Time Interval sign | 3 |
User ID | 11 |
The Resource Block sign | 6 |
} |
In the prior art, TDD OFDMA system need carry out complicated predefine to the schedule information of descending time slot and the indication rule of ascending resource, and the embodiment of the invention is by quantizing Resource Block and Transmission Time Interval and numbering, and in schedule information, carry Resource Block sign and Transmission Time Interval sign, effectively reduced the expense of schedule information.In addition, utilize the method for hidden customer/user's group id, and utilize the message identifier in the schedule information, or the Transmission Time Interval sign, or a plurality of users' of modulation coding mode sign indication method, realized the further reduction of the expense of schedule information.
As shown in figure 11, the dispensing device schematic diagram for the embodiment of the invention comprises configuration module, mapping block and sending module.
Configuration module is used for configuration schedules information.This module also comprises:
First configuration module is used for the mapping relations of configuration schedules information and physical resource;
Second configuration module is used for the adjustment situation to the mapping relations of terminal indication schedule information and physical resource.
Configuration module sends to mapping block with the configuration of the schedule information of generation.
Mapping block is used for according to above-mentioned configuration, and schedule information is mapped in one or the continuous a plurality of descending time slots.This schedule information can be indicated the time slot that self shines upon, the time slot after the perhaps described time slot that self shines upon.In addition, schedule information can comprise message identifier, user/user's group id, Transmission Time Interval sign, Resource Block sign and out of Memory, and as the modulation coding mode sign etc., these sequencings that are identified in the message of schedule information can be adjusted.
Sending module is used for above-mentioned schedule information and configuration thereof are sent to terminal.
In sum, the embodiment of the invention is by setting up the mapping relations of schedule information and or continuous a plurality of descending time slots, and above-mentioned schedule information is sent to terminal according to above-mentioned mapping relations, effectively reduced the signaling consumption of system when sending schedule information.In addition, the embodiment of the invention utilizes broadcast that schedule information is configured, and has shortened the time span that terminal need be monitored, thereby has effectively saved the power consumption of terminal, also helps carrying out of BroadCast MultiCast Service.
Above-mentioned only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of sending method of schedule information is characterized in that comprising:
Set up the mapping relations of schedule information and or continuous a plurality of descending time slots;
According to described mapping relations described schedule information is sent to terminal.
2, method according to claim 1 is characterized in that,
Described schedule information is used to indicate the time slot of self mapping, the time slot after the time slot of perhaps described self mapping.
3, method according to claim 1 and 2 is characterized in that,
Described schedule information comprises message identifier, Transmission Time Interval sign and Resource Block sign at least.
4, method according to claim 3 is characterized in that,
Described schedule information also comprises user or user's group id;
Described user or user's group id are dominance user or dominance user group id;
Perhaps
Described user or user's group id are hidden customer or hidden customer group id.
5, method according to claim 3 is characterized in that,
Described schedule information also comprises the modulation coding mode sign;
Described method also comprises:
Message identifier in the described schedule information, or Transmission Time Interval sign, or a plurality of users of modulation coding mode sign indication.
6, method according to claim 1 and 2 is characterized in that,
Described schedule information is configured by broadcast.
7, method according to claim 6 is characterized in that,
Described broadcast comprises configuration field at least and field is adjusted in configuration;
Described configuration field is used to dispose the mapping relations of described schedule information and physical resource; The adjustment situation that field is used for indicating to terminal the mapping relations of described schedule information and described physical resource is adjusted in described configuration.
8, a kind of dispensing device is characterized in that, comprising:
Mapping block is used for schedule information is mapped in one or the continuous a plurality of descending time slots;
Sending module is used for the schedule information of described mapping block mapping is sent to terminal.
9, device according to claim 8 is characterized in that, described device also comprises:
Configuration module is used to dispose described schedule information.
10, device according to claim 9 is characterized in that, described configuration module comprises:
First configuration module is used to dispose the mapping relations of described schedule information and physical resource;
Second configuration module is used for indicating to terminal the adjustment situation of the mapping relations of described schedule information and described physical resource.
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WO2012162898A1 (en) * | 2011-06-03 | 2012-12-06 | Nokia Siemens Networks Oy | Scheduling of downlink data resources |
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CN102238732A (en) * | 2010-04-28 | 2011-11-09 | 中兴通讯股份有限公司 | Method and device for allocating and scheduling radio resources in orthogonal frequency division multiplexing (OFDM) system |
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US11678366B2 (en) | 2016-04-01 | 2023-06-13 | Huawei Technologies Co., Ltd. | Method and apparatus for resource scheduling using an access identifier |
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