CN101378286B - Method and apparatus for indicating scheduling information - Google Patents
Method and apparatus for indicating scheduling information Download PDFInfo
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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
TD SDMA access (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-SCDMA system, a frame is 10ms, is further divided into two subframes, and each subframe is divided into again 7 time slots, 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) He 6 ascending time slot (TS8～TS13), a synchronous channel SCH that is positioned at before descending TS0 time slot, and the switching point DUSP of a downstream-to-upstream and one are up to descending switching point UDSP.
In OFDM (Orthogonal Frequency Division Multiplex, OFDM) 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 frequency.Physically continuous or continuous a period of time frequency resource in logic, be called Resource Block.Physically running time-frequency resource refers to OFDM symbol and the subcarrier of actual physics, and running time-frequency resource refers to 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 consist of basic resource blocks, be Resource Block minimum in system, other Resource Block all is comprised 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 represents the transmission time of transmitting user data minimum, the time resource that user's minimum takies, comprise at least one OFDM symbol, formed by at least one time slot.
Schedule information is a kind of more special expense in system, mainly be included as information and the out of Memory of a user or one group of user resource allocation, such as user's sign, modulation coding mode sign etc., schedule information need to 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 namely a frame is 5ms, comprises a plurality of OFDM symbols, does not divide time slot in frame structure.The physical resource of schedule information mapping is indicated by 8 bits of FCH (Frame Control Header, frame control head section), 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 the 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 not dividing Resource Block, resource identification adopts subcarrier and the original position of OFDM symbol and the method for side-play amount, and therefore, in schedule information, the required bit number of each sign is a lot.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 larger, needs 40～50 bits.
Summary of the invention
The embodiment of the present 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 present 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, wherein said schedule information is used to indicate the time slot of self mapping, perhaps the time slot after the time slot of described self mapping;
According to described mapping relations, described schedule information is sent to terminal.
The embodiment of the present invention also provides a kind of dispensing device, comprising:
The first configuration module is for the mapping relations of configuration schedules information and physical resource;
The second configuration module is used for to the adjustment situation of the mapping relations of the terminal described schedule information of indication and described physical resource;
Mapping block is used for described schedule information is mapped in one or continuous a plurality of descending time slots;
Sending module is used for the schedule information of described mapping block mapping is sent to described terminal.
The embodiment of the present 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 reduces 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 present invention schedule information;
Fig. 4 is the subframe structure schematic diagram of the embodiment of the present invention one;
Fig. 5 is the frame structure schematic diagram of the embodiment of the present invention two;
Fig. 6 is the subframe structure schematic diagram of the embodiment of the present invention two;
Fig. 7 is the schematic diagram of the broadcast of the embodiment of the present invention;
Fig. 8 is the schedule information schematic diagram that dominant user/user organizes of the embodiment of the present invention;
Fig. 9 is the schedule information schematic diagram that hidden customer/user organizes of the embodiment of the present invention;
Figure 10 is the multi-user's of the embodiment of the present 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 present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present invention is in the ofdm system of TDD, proposes a kind of indicating means of efficient schedule information, to reduce the power consumption of terminal in the unit interval, reduces simultaneously the signaling consumption of schedule information.
As shown in Figure 3, the flow chart for the sending method of embodiment of the present invention schedule information specifically comprises the steps:
Fig. 4 is the subframe structure schematic diagram of the embodiment of the present 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 in 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 in 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 present 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 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 present 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 namely 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 in time slot TS0 can be indicated time slot TS0 self and any one follow-up Transmission Time Interval of time slot TS0; Schedule information in 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 present invention utilizes the configuration field in 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 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 present invention.Accordingly, table 1 is content and the implication table of comparisons of the configuration field of this broadcast, and table 2 is 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 broadcast can be 00,01,10 or 11, and these four kinds of contents different mappings relation of corresponding schedule information and physical resource respectively.For example, this field contents is 00, represents that schedule information is mapped in time slot TS0, takies the running time-frequency resource of the non-broadcast in time slot TS0.And for example, this field contents is 11, represents that schedule information is mapped in time slot TS0, time slot TS1, time slot TS2 and time slot TS3, takies the running time-frequency resource of the non-broadcast in time slot TS0 and time slot TS1, and the whole resources in time slot TS2 and TS3.
Understandable, if the configuration field in broadcast is expanded, it will be more utilizing schedule information that this field can configure and the mapping relations of physical resource.For example, configuration field is expanded to 3 bits, the schedule information that can configure and the mapping relations of physical resource have 8 kinds.In addition, be consistent to the cycle that issues of schedule information and the mapping relations of the physical resource cycle that is configured and the broadcast message that configures these mapping relations.
Table 2
| Field contents is adjusted in the configuration of broadcast | Implication |
| 1 | The time slot that terminal need to be monitored changes |
| 0 | The time slot that terminal need to be monitored is constant |
As shown in table 2, the content that field is adjusted in the configuration in 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 to be monitored whole time slots to obtain the schedule information of oneself.After the user obtains corresponding sign, whether to some extent the indication field in broadcast will indicate the physical resource that schedule information is shone upon to compare adjustment with last subframe.If it is 1 that the content of field is adjusted in configuration, expression is compared with the mapping relations of physical resource in last subframe with schedule information, and both adjust the mapping relations in current subframe, and namely the time slot that need to monitor of terminal changes.At this moment, terminal need to 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, expression is compared with the mapping relations of physical resource in last subframe with schedule information, and both do not adjust the mapping relations in current subframe, and namely the time slot that need to 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 last subframe.As seen, in embodiments of the present invention, terminal adjusts according to the configuration in broadcast the time slot that field determines that needs are monitored, 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 organizes sign, 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 for the type of message of expression schedule information.
User/user organizes sign, is used for user or user's group that the expression schedule information is dispatched.This sign can be dominant sign, namely directly identifies by a certain field in schedule information, can be also recessive sign, namely with scrambler to the whole scrambling of schedule information as sign.
The Transmission Time Interval sign is used for the shared transmission period of running time-frequency resource that the expression 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 which Resource Block that the expression scheduling message has taken its transmission period.This sign obtains after the different frequency resource is numbered.For example, the Resource Block of m bit sign can represent a m power Resource Block of 2.
Fig. 8 is the schedule information schematic diagram that dominant user/user organizes of the embodiment of the present invention, and in this schedule information, the expense of each field is as shown in table 3.
Fig. 9 is the schedule information schematic diagram that hidden customer/user organizes of the embodiment of the present invention, and in this schedule information, the expense of each field is as shown in table 4.
Table 3
| Field | Expense (bit) |
| Message identifier | 4 |
| User ID | 11 |
| The Transmission Time Interval sign | 3 |
[0054]
| 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 dominant 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 present invention can also be in schedule information, Transmission Time Interval to the multi-user carries out nested, that is to say, the user in a Transmission Time Interval is nested in a schedule information transmits, namely the Transmission Time Interval information that shares of a plurality of users only needs transmission primaries.As shown in figure 10, be the multi-user's of the embodiment of the present invention the nested schedule information schematic diagram of Transmission Time Interval sign.In this schedule information, the expense of each field is as shown in table 5.As seen, the Transmission Time Interval of 3 bits is designated the expense that N user shares, i.e. the 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, multi-user's Transmission Time Interval carried 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 present 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 a schedule information transmits, and namely the message identifier that shares of a plurality of users only needs transmission primaries.In the nested schedule information of multi-user's message identifier, the expense of each field is as shown in table 6.As seen, the message identifier of 4 bits is N the expense that the user shares, i.e. the 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 |
[0064]
| 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 present 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 a schedule information and transmit, namely the modulation coding mode sign that shares of a plurality of users only needs a transmission primaries.In the nested schedule information of multi-user's modulation coding mode, the expense of each field is as shown in table 7.As seen, the modulation coding mode identification field of 4 bits is N the expense that the user shares, i.e. the 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 modulation coding mode carried 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 |
[0068]
| The Resource Block sign | 6 |
| } |
In the prior art, TDD OFDMA system need to carry out complicated predefine to the schedule information of descending time slot and the indication rule of ascending resource, and the embodiment of the present invention is by quantizing and number Resource Block and Transmission Time Interval, and carry Resource Block sign and Transmission Time Interval sign in schedule information, effectively reduce the expense of schedule information.In addition, utilize hidden customer/user to organize the method for sign, and utilize the message identifier in 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 present invention comprises configuration module, mapping block and sending module.
Configuration module is used for configuration schedules information.This module also comprises:
The first configuration module is for the mapping relations of configuration schedules information and physical resource;
The second configuration module is used for to the adjustment situation of 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 continuous a plurality of descending time slots.This schedule information can be indicated the time slot that self shines upon, perhaps the time slot after the described time slot that self shines upon.In addition, schedule information can comprise that message identifier, user/user organize sign, 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 present 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 is sent to terminal, effectively reduce the signaling consumption of system when sending schedule information.In addition, the embodiment of the present invention utilizes broadcast that schedule information is configured, and has shortened the time span that terminal need to be monitored, thereby has effectively saved the power consumption of terminal, also is conducive to carrying out of BroadCast MultiCast Service.
Above-mentioned is only the preferred embodiment 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 (5)
1. the sending method of a schedule information is characterized in that comprising:
Set up the mapping relations of schedule information and or continuous a plurality of descending time slots, wherein said schedule information is used to indicate the time slot of self mapping, perhaps the time slot after the time slot of described self mapping;
According to described mapping relations, described schedule information is sent to terminal, wherein said schedule information is configured by broadcast, described broadcast comprises at least configuration field and field is adjusted in configuration, described configuration field is used for configuring the mapping relations of described schedule information and physical resource, and described configuration is adjusted field and is used for to the adjustment situation of the mapping relations of the terminal described schedule information of indication and described physical resource.
2. method according to claim 1, is characterized in that,
Described schedule information comprises message identifier, Transmission Time Interval sign and Resource Block sign at least.
3. method according to claim 2, is characterized in that,
Described schedule information also comprises the user or the user organizes sign;
Described user or user group is designated dominant user or dominant user organizes sign;
Perhaps
Described user or user's group are designated hidden customer or hidden customer group sign.
4. method according to claim 2, is characterized in that,
Described schedule information also comprises the modulation coding mode sign;
Described method also comprises:
Message identifier in described schedule information, or Transmission Time Interval sign, or a plurality of users of modulation coding mode sign indication.
5. a dispensing device, is characterized in that, comprising:
The first configuration module is for the mapping relations of configuration schedules information and physical resource;
The second configuration module is used for to the adjustment situation of the mapping relations of the terminal described schedule information of indication and described physical resource;
Mapping block is used for described schedule information is mapped in one or continuous a plurality of descending time slots;
Sending module is used for the schedule information of described mapping block mapping is sent to described terminal.
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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 |
| PL3930405T3 (en) * | 2011-06-03 | 2024-01-03 | Beijing Xiaomi Mobile Software Co., Ltd. | Scheduling of downlink data resources |
| CN104754627A (en) * | 2013-12-30 | 2015-07-01 | 电信科学技术研究院 | Resource monitoring method, user equipment and network equipment |
| US11678313B2 (en) | 2015-02-04 | 2023-06-13 | Alcatel Lucent | Network controlled acquisition of uplink channels in unlicensed frequency bands |
| CN106576298B (en) * | 2015-06-27 | 2020-02-14 | 华为技术有限公司 | Data transmission method and related communication equipment |
| WO2017070903A1 (en) * | 2015-10-29 | 2017-05-04 | 华为技术有限公司 | Scheduling method, device and system |
| CN111510190B (en) * | 2015-11-24 | 2024-04-12 | 华为技术有限公司 | Beam processing method and device |
| KR102171791B1 (en) | 2016-04-01 | 2020-10-29 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Resource scheduling method, access network device, and user equipment |
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| CN1968274A (en) * | 2005-07-04 | 2007-05-23 | 三星电子株式会社 | Apparatus and method for scheduling data in a modem |
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| CN1968274A (en) * | 2005-07-04 | 2007-05-23 | 三星电子株式会社 | Apparatus and method for scheduling data in a modem |
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