CN106793143B - Management method and management device for downlink control information and base station - Google Patents
Management method and management device for downlink control information and base station Download PDFInfo
- Publication number
- CN106793143B CN106793143B CN201611245435.8A CN201611245435A CN106793143B CN 106793143 B CN106793143 B CN 106793143B CN 201611245435 A CN201611245435 A CN 201611245435A CN 106793143 B CN106793143 B CN 106793143B
- Authority
- CN
- China
- Prior art keywords
- downlink control
- control information
- terminal
- tti
- priority
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a management method, a management device and a base station of downlink control information, wherein the management method of the downlink control information comprises the following steps: in the process of scheduling a terminal in any first type TTI in the current second type TTI duration, acquiring the priority of a low delay service of the terminal, wherein the duration of the second type TTI is integral multiple of the duration of the first type TTI; determining downlink control information corresponding to the terminal and downlink control channel resources for bearing the downlink control information corresponding to the terminal according to the priority of the low-delay service; and sending the downlink control information carried by the downlink control channel resource to the terminal. Through the technical scheme of the invention, in the process of dispatching the terminal, the required downlink control information can be sent to the terminal according to the priority of the low-delay service of the terminal, so that the delay performance of the system is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a base station for managing downlink control information.
Background
With the development of the mobile internet, a large number of application services satisfying various specific functions are emerging. Some of the services have low requirements on data delay, such as sending and receiving mails, downloading movies, etc.; however, there are other services that have strict requirements on data delay, such as online games, robbery, red packet robbery, etc., and these services usually require the user data delay to be as short as possible. In an LTE (Long Term Evolution) network, a transmission time interval TTI is an important index that affects user data delay. A TTI (legacy TTI) adopted by the current LTE system is 1ms, that is, one subframe, a transmitting end transmits a data block every 1ms, and a receiving end can receive a data block every 1 ms.
The subject of using shorter TTIs in LTE networks is well established in 3GPP RAN #69, investigating the feasibility and possible beneficial effects of using shorter duration TTIs (short-TTIs, hereinafter abbreviated as sTTI, e.g. 0.5ms, etc.). At present, some documents such as [ R1-160942] [ R1-160930] quantitatively study the influence of the reduction of the TTI duration on the LTE data delay, and analysis shows that the TTI duration is not only the transmission time interval of the base station and the terminal is shortened, but also the data processing time corresponding to the transmission interval is correspondingly reduced, for example, the data coding modulation time and the data demodulation time are both reduced along with the reduction of the data block size. In a LTE network of a subsequent release, a situation may occur in which UEs (User equipments) using both transmission intervals of legacy TTI and sTTI coexist. On the radio resource partition of the LTE system, it may also happen that a part of the frequency resources use legacy TTIs and another part of the frequency resources use sTTI. A legacy TTI duration may include multiple sttis.
In the LTE network, for flexible adaptive scheduling, each legacy TTI has downlink control information for the TTI. The downlink control information is carried in the first n OFDM (Orthogonal frequency division Multiplexing) symbols of the entire system bandwidth (n is 1-4, and values may be different according to specific system configuration), and includes common downlink control information for all UEs in a cell and UE-specific downlink control information for each UE. The common Control information mainly includes information indicating that the Control Channel resources occupy the number of OFDM symbols (carried on a Physical Control Format Indicator Channel (PCFICH)), HARQ ACK/NACK feedback information for uplink data (carried on a Physical Hybrid ARQ Indicator Channel (PHICH)), paging, random access response, broadcast information, and the like (carried on a PDCCH and mapped in a common search space). The UE-specific downlink control information mainly includes time-frequency resources allocated by the UE, a modulation coding format, a HARQ (Hybrid Automatic Repeat reQuest ) process number, uplink frequency hopping, uplink power control information, and the like (which are carried on a PDCCH channel and generally mapped in a UE-specific search space). On the resource using the sTTI, if the design of the downlink control channel same as the legacy TTI is also adopted, that is, each sTTI has independent downlink control information, including common downlink control information and UE-specific downlink control information. The downlink control information resource overhead for the sTTI in the same time period will be multiple times of the legacy TTI (depending on the time length multiple relationship of legacy TTI to sTTI). Too large downlink control information resource overhead affects the data transmission efficiency of the sTTI, and the effect of reducing the time delay of the sTTI is difficult to be exerted.
In the related art, to solve the above problem, a two-layer control information design is adopted, in the method, dedicated control information of the UE using the sTTI is divided into two layers, namely a slow level and a fast level, as shown in fig. 1, the slow control information is carried in legacy downlink control channel resources, and a first plurality of OFDM symbols of each sTTI are set as sPDCCH channel resources for carrying the dedicated fast downlink control information of the UE using the sTTI resources. The UE using the sTTI needs to obtain actual downlink control information according to the slow control information and the fast control information. As only the quick control information needs to be updated in each sTTI, the control information overhead in the sTTI is reduced, and meanwhile, the scheduling flexibility in the sTTI is met.
In the design mode adopting two layers of control information, the terminal needs to combine slow and fast control information to obtain complete downlink control information, and the base station needs to determine that the terminal needs to be scheduled before the start of the legacy TTI, so that the terminal sends the slow control information in a legacy downlink control information area. If the terminal has a burst low-delay service in the middle of one legacy TTI, it needs to wait at least until the next legacy TTI comes before being scheduled. This will undoubtedly increase the service delay, and weaken the delay reduction effect of the two-layer control information design scheme, for which there is no effective solution at present.
Disclosure of Invention
The present invention is based on at least one of the above technical problems, and provides a new management scheme for downlink control information, which can send the required downlink control information to the terminal according to the priority of the low latency service of the terminal in the process of scheduling the terminal, thereby improving the latency performance of the system.
In view of this, the present invention provides a method for managing downlink control information, which is used for a base station, and includes: in the process of scheduling a terminal in any first type TTI in the current second type TTI duration, acquiring the priority of a low delay service of the terminal, wherein the duration of the second type TTI is integral multiple of the duration of the first type TTI; determining downlink control information corresponding to the terminal and downlink control channel resources for bearing the downlink control information corresponding to the terminal according to the priority of the low-delay service; and sending the downlink control information carried by the downlink control channel resource to the terminal.
In the technical scheme, in the process of scheduling the terminal in any first type TTI within the current second type TTI duration, the downlink control information corresponding to the terminal and the downlink control channel resource used for bearing the downlink control information corresponding to the terminal are determined according to the acquired priority of the low delay service of the terminal, and the downlink control information borne by the downlink control channel resource is sent to the terminal, so that the required downlink control information can be sent to the terminal by combining the actual situation of the low delay service of the terminal, and the delay performance of the system is improved.
In the foregoing technical solution, preferably, the downlink control information corresponding to the terminal includes first downlink control information and second downlink control information, where the second downlink control information includes first dedicated downlink control information and second dedicated downlink control information, and the step of determining the downlink control information corresponding to the terminal and downlink control channel resources used for carrying the downlink control information corresponding to the terminal according to the priority of the low latency service specifically includes: judging whether the priority of the low-delay service is greater than a preset priority or not; when the priority of the low-delay service is determined to be greater than the preset priority, determining that the downlink control information corresponding to the terminal is the first downlink control information, and the downlink control channel resources of the first type TTI in the current second type TTI duration bear the first downlink control information; and when the priority of the low-delay service is determined to be less than or equal to the preset priority, determining that the downlink control information corresponding to the terminal is second downlink control information, and the downlink control channel of the next second type TTI bears the first dedicated downlink control information and the downlink control channel resource of the first type TTI within the next second type TTI bears the second dedicated downlink control information.
In the technical scheme, whether the priority of the low-delay service is greater than a preset priority is judged, when the priority of the low-delay service is greater than the preset priority, the low-delay service needs to be immediately scheduled is indicated, then the downlink control information corresponding to the terminal is determined to be first downlink control information (wherein the first downlink control information is a single-layer downlink control information structure and contains all information required by a base station for scheduling the terminal in any first TTI of a current second TTI), a precondition guarantee is provided for the subsequent realization of the immediate scheduling of the low-delay service, when the priority of the low-delay service is less than or equal to the preset priority, the low-delay service does not need to be immediately scheduled and can be scheduled when the next second TTI comes, and then the downlink control information corresponding to the terminal is determined to be second downlink control information (wherein the second downlink control information comprises first downlink control information and second downlink control information, the second downlink control information is of a two-layer control information structure), thereby reducing the control information overhead in the first TTI and simultaneously meeting the scheduling flexibility in the first TTI.
In any one of the foregoing technical solutions, preferably, when it is determined that the downlink control information corresponding to the terminal is the first downlink control information, the step of sending the downlink control information carried by the downlink control channel resource to the terminal specifically includes: and sending the first downlink control information to the terminal within the current second-type TTI duration so that the terminal determines the required actual downlink control information based on the first downlink control information.
In any one of the foregoing technical solutions, preferably, when it is determined that the downlink control information corresponding to the terminal is the second downlink control information, the step of sending the downlink control information carried by the downlink control channel resource to the terminal specifically includes: and sending the first exclusive downlink control information and the second exclusive downlink control information to the terminal within the next second type TTI duration so that the terminal determines the required actual downlink control information based on the first exclusive downlink control information and the second exclusive downlink control information.
According to a second aspect of the present invention, there is provided an apparatus for managing downlink control information, for a base station, including: an obtaining unit, configured to obtain a priority of a low latency service of a terminal in a process of scheduling the terminal in any one first type TTI within a current second type TTI duration, where the second type TTI duration is an integer multiple of the first type TTI duration; a determining unit, configured to determine, according to the priority of the low latency service, downlink control information corresponding to the terminal and a downlink control channel resource for carrying the downlink control information corresponding to the terminal; a sending unit, configured to send, to the terminal, downlink control information carried by the downlink control channel resource.
In the technical scheme, in the process of scheduling the terminal in any first type TTI within the current second type TTI duration, the downlink control information corresponding to the terminal and the downlink control channel resource used for bearing the downlink control information corresponding to the terminal are determined according to the acquired priority of the low delay service of the terminal, and the downlink control information borne by the downlink control channel resource is sent to the terminal, so that the required downlink control information can be sent to the terminal by combining the actual situation of the low delay service of the terminal, and the delay performance of the system is improved.
In the foregoing technical solution, preferably, the downlink control information corresponding to the terminal includes first downlink control information and second downlink control information, the second downlink control information includes first dedicated downlink control information and second dedicated downlink control information, and the determining unit is specifically configured to: judging whether the priority of the low-delay service is greater than a preset priority or not; when the priority of the low-delay service is determined to be greater than the preset priority, determining that the downlink control information corresponding to the terminal is the first downlink control information, and the downlink control channel resources of the first type TTI in the current second type TTI duration bear the first downlink control information; and when the priority of the low-delay service is determined to be less than or equal to the preset priority, determining that the downlink control information corresponding to the terminal is second downlink control information, and the downlink control channel of the next second type TTI bears the first dedicated downlink control information and the downlink control channel resource of the first type TTI within the next second type TTI bears the second dedicated downlink control information.
In the technical scheme, whether the priority of the low-delay service is greater than a preset priority is judged, when the priority of the low-delay service is greater than the preset priority, the low-delay service needs to be immediately scheduled is indicated, then the downlink control information corresponding to the terminal is determined to be first downlink control information (wherein the first downlink control information is a single-layer downlink control information structure and contains all information required by a base station for scheduling the terminal in any first TTI of a current second TTI), a precondition guarantee is provided for the subsequent realization of the immediate scheduling of the low-delay service, when the priority of the low-delay service is less than or equal to the preset priority, the low-delay service does not need to be immediately scheduled and can be scheduled when the next second TTI comes, and then the downlink control information corresponding to the terminal is determined to be second downlink control information (wherein the second downlink control information comprises first downlink control information and second downlink control information, the second downlink control information is of a two-layer control information structure), thereby reducing the control information overhead in the first TTI and simultaneously meeting the scheduling flexibility in the first TTI.
In any one of the foregoing technical solutions, preferably, when the determining unit determines that the downlink control information corresponding to the terminal is the first downlink control information, the sending unit is specifically configured to: and sending the first downlink control information to the terminal within the current second-type TTI duration so that the terminal determines the required actual downlink control information based on the first downlink control information.
In any one of the foregoing technical solutions, preferably, when the determining unit determines that the downlink control information corresponding to the terminal is the second downlink control information, the sending unit is specifically configured to: and sending the first exclusive downlink control information and the second exclusive downlink control information to the terminal within the next second type TTI duration so that the terminal determines the required actual downlink control information based on the first exclusive downlink control information and the second exclusive downlink control information.
According to the third aspect of the present invention, there is also provided a base station, including: the apparatus for managing downlink control information according to any one of the above aspects.
Through the technical scheme, in the process of scheduling the terminal, the required downlink control information can be sent to the terminal according to the priority of the low-delay service of the terminal, and the delay performance of the system is improved.
Drawings
Fig. 1 is a diagram illustrating resource allocation of a downlink control channel in the related art;
fig. 2 shows a schematic flow chart of a method of managing downlink control information according to an embodiment of the invention;
fig. 3 shows a schematic block diagram of a management apparatus of downlink control information according to an embodiment of the present invention;
fig. 4 shows a schematic block diagram of a base station according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 2 shows a schematic flow diagram of a method of managing downlink control information according to an embodiment of the present invention.
As shown in fig. 2, a method for managing downlink control information according to an embodiment of the present invention is applied to a base station, and includes:
In the technical scheme, in the process of scheduling the terminal in any first type TTI within the current second type TTI duration, the downlink control information corresponding to the terminal and the downlink control channel resource used for bearing the downlink control information corresponding to the terminal are determined according to the acquired priority of the low delay service of the terminal, and the downlink control information borne by the downlink control channel resource is sent to the terminal, so that the required downlink control information can be sent to the terminal by combining the actual situation of the low delay service of the terminal, and the delay performance of the system is improved.
In the foregoing technical solution, preferably, the downlink control information corresponding to the terminal includes first downlink control information and second downlink control information, where the second downlink control information includes first dedicated downlink control information and second dedicated downlink control information, and the step of determining the downlink control information corresponding to the terminal and downlink control channel resources used for carrying the downlink control information corresponding to the terminal according to the priority of the low latency service specifically includes: judging whether the priority of the low-delay service is greater than a preset priority or not; when the priority of the low-delay service is determined to be greater than the preset priority, determining that the downlink control information corresponding to the terminal is the first downlink control information, and the downlink control channel resources of the first type TTI in the current second type TTI duration bear the first downlink control information; and when the priority of the low-delay service is determined to be less than or equal to the preset priority, determining that the downlink control information corresponding to the terminal is second downlink control information, and the downlink control channel of the next second type TTI bears the first dedicated downlink control information and the downlink control channel resource of the first type TTI within the next second type TTI bears the second dedicated downlink control information.
In the technical scheme, whether the priority of the low-delay service is greater than a preset priority is judged, when the priority of the low-delay service is greater than the preset priority, the low-delay service needs to be immediately scheduled is indicated, then the downlink control information corresponding to the terminal is determined to be first downlink control information (wherein the first downlink control information is a single-layer downlink control information structure and contains all information required by a base station for scheduling the terminal in any first TTI of a current second TTI), a precondition guarantee is provided for the subsequent realization of the immediate scheduling of the low-delay service, when the priority of the low-delay service is less than or equal to the preset priority, the low-delay service does not need to be immediately scheduled and can be scheduled when the next second TTI comes, and then the downlink control information corresponding to the terminal is determined to be second downlink control information (wherein the second downlink control information comprises first downlink control information and second downlink control information, the second downlink control information is of a two-layer control information structure), thereby reducing the control information overhead in the first TTI and simultaneously meeting the scheduling flexibility in the first TTI.
In any one of the foregoing technical solutions, preferably, when it is determined that the downlink control information corresponding to the terminal is the first downlink control information, the step of sending the downlink control information carried by the downlink control channel resource to the terminal specifically includes: and sending the first downlink control information to the terminal within the current second-type TTI duration so that the terminal determines the required actual downlink control information based on the first downlink control information.
In any one of the foregoing technical solutions, preferably, when it is determined that the downlink control information corresponding to the terminal is the second downlink control information, the step of sending the downlink control information carried by the downlink control channel resource to the terminal specifically includes: and sending the first exclusive downlink control information and the second exclusive downlink control information to the terminal within the next second type TTI duration so that the terminal determines the required actual downlink control information based on the first exclusive downlink control information and the second exclusive downlink control information.
Specifically, when a terminal with a high-priority bursty low-delay service is scheduled quickly at the middle of a legacy TTI (i.e., a second-type TTI), and a base station schedules such a terminal at the middle of the legacy TTI, a single-layer downlink control information structure is used, which is not divided into two layers of control information, namely, slow (first dedicated downlink control information) and fast (second dedicated downlink control information). The single-layer control information is carried in a control information region of an sTTI (i.e., a first-type TTI), and includes all information required by the base station to schedule the terminal at the sTTI at the middle time of the legacy TTI. And after receiving the single-layer control information, the terminal using the sTTI can perform scheduling operation according to the instruction, so that the scheduling can be performed on any sTTI at the middle time of the legacy TTI. After the current legacy TTI is finished, if the terminal still needs to be scheduled in the next legacy TTI period, a dual-layer control information structure is adopted to save signaling overhead.
The single-layer downlink control information (i.e., the first downlink control information) only includes all information required by the base station to schedule the terminal at the sTTI at the middle time of the legacy TTI, for the UE with the bursty low-latency service at the middle time of the legacy TTI. For example, the RB (Resource Block) allocated by the base station to the terminal, the base station indicates the MCS (Modulation and Coding Scheme) used by the terminal, the HARQ process ID number, the redundancy version indication, the new transmission/retransmission indication, and the like. When the information required for scheduling is represented in the single-layer control information, the slow and fast two-layer control information is not divided, for example:
1) directly using 5 bits to represent the actual MCS value to be used in the scheduled sTTI, and not using the reference MCS value + MCS offset value;
2) and directly indicating the index of the allocated RB, not using the RB group indicated in the slow control information any more, and indicating the specific RB index in the RB group in the fast control information.
The base station removes the dependence on the slow control information in the legacy control information region by using the single-layer control information in the sTTI, thereby rapidly scheduling the terminal with the burst low-delay service in any one sTTI in the legacy TTI without scheduling the terminal after the next legacy TTI comes, and improving the delay performance of the system.
Fig. 3 shows a schematic block diagram of a management apparatus of downlink control information according to an embodiment of the present invention.
As shown in fig. 3, a management apparatus 300 of downlink control information according to an embodiment of the present invention is used for a base station, and includes: an acquisition unit 302, a determination unit 304, and a transmission unit 306.
The obtaining unit 302 is configured to obtain a priority of a low latency service of a terminal in a process of scheduling the terminal in any one first type TTI within a current second type TTI duration, where the duration of the second type TTI is an integer multiple of the duration of the first type TTI; the determining unit 304 is configured to determine, according to the priority of the low latency service, downlink control information corresponding to the terminal and a downlink control channel resource for carrying the downlink control information corresponding to the terminal; the sending unit 306 is configured to send the downlink control information carried by the downlink control channel resource to the terminal.
In the technical scheme, in the process of scheduling the terminal in any first type TTI within the current second type TTI duration, the downlink control information corresponding to the terminal and the downlink control channel resource used for bearing the downlink control information corresponding to the terminal are determined according to the acquired priority of the low delay service of the terminal, and the downlink control information borne by the downlink control channel resource is sent to the terminal, so that the required downlink control information can be sent to the terminal by combining the actual situation of the low delay service of the terminal, and the delay performance of the system is improved.
In the foregoing technical solution, preferably, the downlink control information corresponding to the terminal includes first downlink control information and second downlink control information, the second downlink control information includes first dedicated downlink control information and second dedicated downlink control information, and the determining unit 304 is specifically configured to: judging whether the priority of the low-delay service is greater than a preset priority or not; when the priority of the low-delay service is determined to be greater than the preset priority, determining that the downlink control information corresponding to the terminal is the first downlink control information, and the downlink control channel resources of the first type TTI in the current second type TTI duration bear the first downlink control information; and when the priority of the low-delay service is determined to be less than or equal to the preset priority, determining that the downlink control information corresponding to the terminal is second downlink control information, and the downlink control channel of the next second type TTI bears the first dedicated downlink control information and the downlink control channel resource of the first type TTI within the next second type TTI bears the second dedicated downlink control information.
In the technical scheme, whether the priority of the low-delay service is greater than a preset priority is judged, when the priority of the low-delay service is greater than the preset priority, the low-delay service needs to be immediately scheduled is indicated, then the downlink control information corresponding to the terminal is determined to be first downlink control information (wherein the first downlink control information is a single-layer downlink control information structure and contains all information required by a base station for scheduling the terminal in any first TTI of a current second TTI), a precondition guarantee is provided for the subsequent realization of the immediate scheduling of the low-delay service, when the priority of the low-delay service is less than or equal to the preset priority, the low-delay service does not need to be immediately scheduled and can be scheduled when the next second TTI comes, and then the downlink control information corresponding to the terminal is determined to be second downlink control information (wherein the second downlink control information comprises first downlink control information and second downlink control information, the second downlink control information is of a two-layer control information structure), thereby reducing the control information overhead in the first TTI and simultaneously meeting the scheduling flexibility in the first TTI.
In any one of the foregoing technical solutions, preferably, when the determining unit 304 determines that the downlink control information corresponding to the terminal is the first downlink control information, the sending unit 306 is specifically configured to: and sending the first downlink control information to the terminal within the current second-type TTI duration so that the terminal determines the required actual downlink control information based on the first downlink control information.
In any one of the foregoing technical solutions, preferably, when the determining unit 304 determines that the downlink control information corresponding to the terminal is the second downlink control information, the sending unit 306 is specifically configured to: and sending the first exclusive downlink control information and the second exclusive downlink control information to the terminal within the next second type TTI duration so that the terminal determines the required actual downlink control information based on the first exclusive downlink control information and the second exclusive downlink control information.
Fig. 4 shows a schematic block diagram of a base station according to an embodiment of the invention.
As shown in fig. 4, a base station 400 according to an embodiment of the present invention includes: such as a management device 300 of downlink control information shown in fig. 3.
The technical scheme of the present invention is described in detail above with reference to the accompanying drawings, and the present invention provides a new management scheme for downlink control information, which can send the required downlink control information to the terminal according to the priority of the low latency service of the terminal in the process of scheduling the terminal, thereby improving the latency performance of the system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A management method of downlink control information is used for a base station, and is characterized by comprising the following steps:
in the process of scheduling a terminal in any first type TTI in the current second type TTI duration, acquiring the priority of a low delay service of the terminal, wherein the duration of the second type TTI is integral multiple of the duration of the first type TTI;
determining downlink control information corresponding to the terminal and downlink control channel resources for bearing the downlink control information corresponding to the terminal according to the priority of the low-delay service;
sending downlink control information carried by the downlink control channel resource to the terminal;
the second type of TTI is legacy TTI, and the first type of TTI is sTTI;
the downlink control information corresponding to the terminal includes first downlink control information and second downlink control information, the second downlink control information includes first dedicated downlink control information and second dedicated downlink control information, and the step of determining the downlink control information corresponding to the terminal and downlink control channel resources for carrying the downlink control information corresponding to the terminal according to the priority of the low-latency service specifically includes:
judging whether the priority of the low-delay service is greater than a preset priority or not;
when the priority of the low-delay service is determined to be greater than the preset priority, determining that the downlink control information corresponding to the terminal is the first downlink control information, and the downlink control channel resources of the first type TTI in the current second type TTI duration bear the first downlink control information;
when the priority of the low-delay service is determined to be less than or equal to the preset priority, determining that the downlink control information corresponding to the terminal is second downlink control information, and the downlink control channel of the next second type TTI bears the first dedicated downlink control information and the downlink control channel resource of the first type TTI within the next second type TTI duration bears the second dedicated downlink control information;
the first dedicated downlink control information is slow, and the second dedicated downlink control information is fast.
2. The method for managing downlink control information according to claim 1, wherein, when it is determined that the downlink control information corresponding to the terminal is the first downlink control information, the step of sending the downlink control information carried by the downlink control channel resource to the terminal specifically includes:
and sending the first downlink control information to the terminal within the current second-type TTI duration so that the terminal determines the required actual downlink control information based on the first downlink control information.
3. The method for managing downlink control information according to claim 1, wherein, when it is determined that the downlink control information corresponding to the terminal is the second downlink control information, the step of sending the downlink control information carried by the downlink control channel resource to the terminal specifically includes:
and sending the first exclusive downlink control information and the second exclusive downlink control information to the terminal within the next second type TTI duration so that the terminal determines the required actual downlink control information based on the first exclusive downlink control information and the second exclusive downlink control information.
4. A management apparatus for downlink control information, configured for a base station, comprising:
an obtaining unit, configured to obtain a priority of a low latency service of a terminal in a process of scheduling the terminal in any one first type TTI within a current second type TTI duration, where the second type TTI duration is an integer multiple of the first type TTI duration;
a determining unit, configured to determine, according to the priority of the low latency service, downlink control information corresponding to the terminal and a downlink control channel resource for carrying the downlink control information corresponding to the terminal;
a sending unit, configured to send, to the terminal, downlink control information carried by the downlink control channel resource;
the second type of TTI is legacy TTI, and the first type of TTI is sTTI;
the downlink control information corresponding to the terminal includes first downlink control information and second downlink control information, the second downlink control information includes first exclusive downlink control information and second exclusive downlink control information, and the determining unit is specifically configured to:
judging whether the priority of the low-delay service is greater than a preset priority or not;
when the priority of the low-delay service is determined to be greater than the preset priority, determining that the downlink control information corresponding to the terminal is the first downlink control information, and the downlink control channel resources of the first type TTI in the current second type TTI duration bear the first downlink control information;
when the priority of the low-delay service is determined to be less than or equal to the preset priority, determining that the downlink control information corresponding to the terminal is second downlink control information, and the downlink control channel of the next second type TTI bears the first dedicated downlink control information and the downlink control channel resource of the first type TTI within the next second type TTI duration bears the second dedicated downlink control information;
the first dedicated downlink control information is slow, and the second dedicated downlink control information is fast.
5. The apparatus for managing downlink control information according to claim 4, wherein, when the determining unit determines that the downlink control information corresponding to the terminal is the first downlink control information, the sending unit is specifically configured to:
and sending the first downlink control information to the terminal within the current second-type TTI duration so that the terminal determines the required actual downlink control information based on the first downlink control information.
6. The apparatus for managing downlink control information according to claim 4, wherein, when the determining unit determines that the downlink control information corresponding to the terminal is the second downlink control information, the sending unit is specifically configured to:
and sending the first exclusive downlink control information and the second exclusive downlink control information to the terminal within the next second type TTI duration so that the terminal determines the required actual downlink control information based on the first exclusive downlink control information and the second exclusive downlink control information.
7. A base station, comprising: the management apparatus of the downlink control information according to any one of claims 4 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611245435.8A CN106793143B (en) | 2016-12-29 | 2016-12-29 | Management method and management device for downlink control information and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611245435.8A CN106793143B (en) | 2016-12-29 | 2016-12-29 | Management method and management device for downlink control information and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106793143A CN106793143A (en) | 2017-05-31 |
| CN106793143B true CN106793143B (en) | 2020-05-05 |
Family
ID=58928799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611245435.8A Active CN106793143B (en) | 2016-12-29 | 2016-12-29 | Management method and management device for downlink control information and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106793143B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3793284A4 (en) | 2018-05-15 | 2021-12-22 | Beijing Xiaomi Mobile Software Co., Ltd. | Information transmission method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101361384A (en) * | 2005-11-28 | 2009-02-04 | 意大利电信股份公司 | Method and system for transmitting content to multiple users in mobile communication network |
| CN104247313A (en) * | 2012-02-27 | 2014-12-24 | 三星电子株式会社 | Adaptation of control signaling transmissions to variations in respective resources |
| CN104620629A (en) * | 2012-09-12 | 2015-05-13 | 华为技术有限公司 | System and method for adaptive transmission time interval (TTI) structure |
| CN106028454A (en) * | 2016-07-06 | 2016-10-12 | 珠海市魅族科技有限公司 | Resource allocation indicating method and device and base station |
| WO2016163623A1 (en) * | 2015-04-08 | 2016-10-13 | 엘지전자(주) | Method for transmitting and receiving data in wireless communication system and apparatus therefor |
| CN106131963A (en) * | 2016-06-12 | 2016-11-16 | 珠海市魅族科技有限公司 | Resource allocation method and device, base station |
-
2016
- 2016-12-29 CN CN201611245435.8A patent/CN106793143B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101361384A (en) * | 2005-11-28 | 2009-02-04 | 意大利电信股份公司 | Method and system for transmitting content to multiple users in mobile communication network |
| CN104247313A (en) * | 2012-02-27 | 2014-12-24 | 三星电子株式会社 | Adaptation of control signaling transmissions to variations in respective resources |
| CN104620629A (en) * | 2012-09-12 | 2015-05-13 | 华为技术有限公司 | System and method for adaptive transmission time interval (TTI) structure |
| WO2016163623A1 (en) * | 2015-04-08 | 2016-10-13 | 엘지전자(주) | Method for transmitting and receiving data in wireless communication system and apparatus therefor |
| CN106131963A (en) * | 2016-06-12 | 2016-11-16 | 珠海市魅族科技有限公司 | Resource allocation method and device, base station |
| CN106028454A (en) * | 2016-07-06 | 2016-10-12 | 珠海市魅族科技有限公司 | Resource allocation indicating method and device and base station |
Non-Patent Citations (2)
| Title |
|---|
| "Details of two-level DCI schemes for short TTI";Huawei,HiSilicon;《3GPP TSG RAN WG1 Meeting #86 R1-166149》;20160826;全文 * |
| "Discussion on sTTI scheduling schemes";Huawei,HiSilicon;《3GPP TSG RAN WG1 Meeting #87 R1-1613028》;20161118;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106793143A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240039683A1 (en) | Techniques for indicating a dynamic subframe type | |
| KR102214855B1 (en) | Method and apparatus for low latency transmissions | |
| EP3504920B1 (en) | Co-existence of low latency and latency tolerant downlink communication | |
| CN106413105B (en) | Resource transmission indicating method, device, network side equipment and terminal | |
| EP2702819B1 (en) | Apparatus and method of resource allocation for data and control channels in a wireless communication system | |
| CN109194456B (en) | Method and device in wireless communication | |
| EP2945405B1 (en) | System information scheduling method and device therefor | |
| US8737286B2 (en) | Sub-frame structure for use in advanced communication systems | |
| EP3536082B1 (en) | Semi-persistent scheduling in sub-subframe operation | |
| EP2315486A1 (en) | Base station device and communication control method | |
| EP2439995A2 (en) | Resource mapping method and apparatus in wireless communication system | |
| CN102938690B (en) | The sending, receiving method of response message and equipment | |
| US11539489B2 (en) | Control information transmission method, receiving method, device, base station and terminal | |
| CN109756979B (en) | Method and communication device for transmitting information | |
| US20160242039A1 (en) | Methods, Computer Programs, Network Nodes and Communication Device | |
| US10499392B2 (en) | Method and apparatus for resource allocation | |
| JP2017529755A (en) | Physical downlink data channel transmission method, base station, and user equipment | |
| CN111818647A (en) | Data transmission method and device | |
| CN107567105B (en) | PUCCH resource scheduling method and device | |
| KR20190005995A (en) | Assigning resources to wireless devices | |
| CN106533632B (en) | Management method and management device of downlink control information, base station and terminal | |
| WO2009051403A2 (en) | Method of allocating radio resource in broadband wireless access system | |
| CN108092750B (en) | Data retransmission method and device | |
| JPWO2016071976A1 (en) | Wireless communication system, base station apparatus, terminal apparatus, and transmission method | |
| CN107027189B (en) | Scheduling method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |