WO2019037555A1 - Resource scheduling method, user equipment and base station - Google Patents

Resource scheduling method, user equipment and base station Download PDF

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Publication number
WO2019037555A1
WO2019037555A1 PCT/CN2018/095109 CN2018095109W WO2019037555A1 WO 2019037555 A1 WO2019037555 A1 WO 2019037555A1 CN 2018095109 W CN2018095109 W CN 2018095109W WO 2019037555 A1 WO2019037555 A1 WO 2019037555A1
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WIPO (PCT)
Prior art keywords
ue
information
time
base station
scheduling
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PCT/CN2018/095109
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French (fr)
Chinese (zh)
Inventor
侯晓林
赵群
王欢
邸博雅
宋令阳
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株式会社Ntt都科摩
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Priority to CN201710740569.5A priority Critical patent/CN109429339A/en
Priority to CN201710740569.5 priority
Application filed by 株式会社Ntt都科摩 filed Critical 株式会社Ntt都科摩
Publication of WO2019037555A1 publication Critical patent/WO2019037555A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel

Abstract

Provided are a resource scheduling method, a user equipment and a base station, wherein the resource scheduling method executed by a UE comprises: receiving scheduling information sent by a base station, wherein the scheduling information is used for indicating a time frequency resource scheduled by the base station for the UE and used for sending information, and the time frequency resource of the UE is orthogonal or non-orthogonal with time frequency resources of other UEs; determining the power for sending information; and using the determined power and the time frequency resource indicated in the scheduling information to send information.

Description

Resource scheduling method, user equipment and base station Technical field

The present application relates to the field of communications technologies, and in particular, to a resource scheduling method, a user equipment, and a base station.

Background technique

D2D communications has become an important technology used in 4G and 5G communication systems. V2X (Vehicle to X) communication in the Internet of Vehicles is a typical application in D2D communication. V2X communication includes various implementations of information exchange between V2V, V2I (Vehicle to Infrastructure), V2P (Vehicle to Pedestrian), V2N (Vehicle to Network) and other parties. V2X communication technology can help in the Internet of Vehicles. The distributed vehicles communicate with the outside world in time to obtain a series of traffic information such as real-time road conditions, road information, pedestrian information, etc., to improve driving safety, reduce congestion, and effectively avoid traffic accidents.

In the prior art, the information transmission of the V2X may be uniformly configured by the base station. Specifically, the base station first allocates time-frequency resources required for transmitting information to the vehicle in the vehicle network (that is, the user equipment or the UE described below), and the UE will use the time-frequency resource allocated by the base station after receiving the time-frequency resource allocated by the base station. The maximum power is sent for information. The time-frequency resources allocated by the base station to the UE are generally orthogonal to each other, so as to avoid interference caused by information transmission and reception between UEs. However, due to the low utilization of the channel resources of the system, the configuration is easy to cause waste of resources and affects the efficiency of information transmission.

Summary of the invention

According to an aspect of the present invention, a resource scheduling method is provided, where the method is performed by a UE, including: receiving scheduling information sent by a base station, where the scheduling information is used to indicate that the base station is scheduled for the UE to perform Time-frequency resources for information transmission, the time-frequency resources of the UE are orthogonal or non-orthogonal with time-frequency resources of other UEs; determining power for performing information transmission; utilizing the determined power and time-frequency resources indicated by the scheduling information Send information.

According to another aspect of the present invention, a resource scheduling method is provided, where the method is performed by a base station, including: scheduling a time-frequency resource for transmitting information by a UE, such that a time-frequency resource of the UE and a time-frequency resource of another UE Orthogonal or non-orthogonal; sending scheduling information to the UE, where the scheduling information is used to indicate that the base station schedules time-frequency resources for the UE, so that the UE utilizes autonomously determined power and the scheduling information. The indicated time-frequency resource transmits information.

According to another aspect of the present invention, a UE is provided, including: a receiving unit, configured to receive scheduling information sent by a base station, where the scheduling information is used to indicate that the base station schedules for the UE to perform information transmission. a time-frequency resource, the time-frequency resource of the UE is orthogonal or non-orthogonal with time-frequency resources of other UEs; the determining unit is configured to determine power for transmitting information; and the sending unit is configured to utilize the determined power and the The time-frequency resource indicated by the scheduling information is used for information transmission.

According to still another aspect of the present invention, a base station is provided, including: a scheduling unit configured to schedule a time-frequency resource for transmitting information by a UE, such that a time-frequency resource of the UE is orthogonal or non-equal to time-frequency resources of other UEs. And a sending unit, configured to send scheduling information to the UE, where the scheduling information is used to indicate that the base station schedules time-frequency resources for the UE, so that the UE utilizes autonomously determined power and the scheduling The time-frequency resource indicated by the information is used for information transmission.

The resource scheduling method, the user equipment, and the base station according to the foregoing aspects of the present invention can effectively reduce the signaling cost of the UE to the direct link (SL) of the UE, improve the channel resource utilization of the system, and reduce resource waste.

DRAWINGS

The above and other objects, features and advantages of the present invention will become apparent from

FIG. 1 shows a flowchart of a resource scheduling method according to an embodiment of the present invention;

2 shows a flow chart of a method of determining information transmission power according to an embodiment of the present invention;

3 is a sequence diagram showing a base station transmitting scheduling information and a UE determining information transmission power in a communication system according to an embodiment of the present invention;

4 shows a flow chart of a resource scheduling method according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a user equipment according to an embodiment of the present invention;

FIG. 6 is a structural block diagram of a base station according to an embodiment of the present invention;

FIG. 7 is a diagram showing an example of a hardware configuration of a base station and a user equipment according to an embodiment of the present invention.

Detailed ways

A resource scheduling method, user equipment, and base station according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In the figures, the same reference numerals are used to refer to the same elements. It is to be understood that the embodiments described herein are illustrative only and are not intended to limit the scope of the invention.

In the communication system, the resource configuration and scheduling method, the base station, and the user equipment according to the embodiment of the present invention are provided in consideration of the signaling cost of the V2X information transmission and the overall transmission performance.

Specifically, the embodiment of the present invention provides a resource scheduling method, which is performed by a UE. FIG. 1 shows a flow diagram of a resource scheduling method 100 in accordance with an embodiment of the present invention.

As shown in FIG. 1 , in step S101, receiving scheduling information sent by a base station, where the scheduling information is used to indicate time-frequency resources used by the base station to perform information transmission for the UE, and time-frequency of the UE. The resources are orthogonal or non-orthogonal to the time-frequency resources of other UEs.

In the embodiment of the present invention, the base station generates the scheduling information of the UE by scheduling the time-frequency resource for the information transmission by the UE, and sends scheduling information indicating the time-frequency resource allocated by the base station to the UE to the UE. Optionally, the time-frequency resource may be a physical resource.

Optionally, the UE may first send related information to the base station to enable the base station to schedule the UE accordingly. For example, the UE may send the geographic location information of the UE and/or the channel large-scale fading information to the base station, so that the base station schedules the time-frequency resources of the UE according to the geographic location information of the UE and/or the channel large-scale fading information. Generate scheduling information. The channel large-scale fading information may be, for example, large-scale fading information of uplink and/or downlink transmission channels between the UE and the base station. Specifically, the base station may directly perform time-frequency resource scheduling according to the geographical location information reported by the UE, or may perform large-scale fading information of the channel calculated according to the geographical location information reported by the UE, or directly receive the large-scale fading information of the channel reported by the UE. The time-frequency resource scheduling is performed; the time-frequency resource scheduling can also be performed by comprehensively considering the geographical location information reported by the UE and the large-scale fading information of the channel.

In an example, the time-frequency resource allocated by the base station to the UE may be completely orthogonal to the time-frequency resource allocated by the base station to other UEs; in another example, the time-frequency resource allocated by the base station to the UE may be The time-frequency resources allocated by one or some UEs are non-orthogonal. When the time-frequency resources allocated by the base station to the UE are orthogonal to the time-frequency resources allocated by the base station to other UEs, the quality of the information sent by the UE is better because the UE and other UEs do not interfere with each other when the information is transmitted. However, when the time-frequency resources allocated by the base station for the UE are not orthogonal to the time-frequency resources allocated by the base station to other UEs, the system may satisfy the system while satisfying certain information transmission quality. Capacity gain to improve channel resource utilization.

In an example, when the time-frequency resource allocated by the base station to the UE is non-orthogonal with the time-frequency resource allocated by the base station to some or some UEs, one or more UEs that are allocated the same time-frequency resource by the base station may occur. Match the pair. When the base station performs the matching of the same time-frequency resources between the UEs in the case of non-orthogonal resource allocation, the matching may be performed on the time slots first, and then the frequency resources are matched. Wherein, when matching time slots, it is considered that each UE tends to select other UEs that are farther away from itself to form a pairing to avoid potential collisions, so that the cross-impact influence of the communication coverage between the UE matching pairs is minimized, and therefore, The best matching manner of the UE matching pair on the time slot is calculated by using factors such as geographical location information sent by the foregoing UE. In addition, optionally, a pair of UEs whose inter-UE distance is less than a certain threshold may be set as a forbidden pair to exclude slot matching between the forbidden pairs when the UE matches the calculation, so as to reduce the inter-channel as much as possible. interference. Then, in the process of frequency matching, the base station may further consider, for example, channel large-scale fading information reported by the UE or channel large-scale fading information calculated according to the geographical location information reported by the UE, thereby calculating that the UE is in the frequency domain channel on the same time slot. Co-channel cross-interference on the same channel to adjust the matching result of the UE matching pair to obtain the UE matching pair on the same same time-frequency resource.

Optionally, the scheduling information sent by the base station that is received by the UE may be scheduling information that is sent by the base station in a semi-persistent scheduling (SPS) manner. In the SPS scheduling information, the scheduling period may be relatively long, for example, tens of milliseconds, hundreds of milliseconds, or seconds, to minimize the signaling transmission burden between the base station and the UE. Optionally, the scheduling information received by the UE may include not only the time-frequency resource scheduling information of the UE sent by the base station, but also the number of UEs on the same time-frequency resource, the UE identifier used for UE detection, and the UE is used by the UE. Transmitting one or more of initial power of information, a transmission timer/counter of SPS scheduling information, a weighting factor of the UE, and a transmission priority of the UE, wherein the weighting factor may assist the UE to perform one or more of the following functions, Including the UE's transmit power adjustment, the UE's transmission rate adjustment, and so on. In addition, the specific content of the foregoing scheduling information may be pre-configured by the base station to the UE, and controlled by the base station to partially or completely activate the configurations, or may be sent by the base station to notify the UE in the signaling transmission process.

In step S102, the UE determines the power to perform information transmission.

2 shows a flow diagram of a method 102 of determining information transmission power in accordance with an embodiment of the present invention. As shown in FIG. 2, in step S1, the reference signal is broadcasted by the time-frequency resource indicated by the scheduling information. Specifically, after the UE receives the scheduling information indicating the time-frequency resource allocation sent by the base station, the reference signal broadcast may be performed according to the time-frequency resource indicated by the scheduling information, so that other UEs that do not use the time-frequency resource receive and perform Computation of co-channel interference. Optionally, the other UE that does not use the time-frequency resource may perform co-channel interference calculation on all received reference signals broadcasted by the time-frequency resource, or may also broadcast a part of the received time-frequency resource through the received time-frequency resource. The reference signal is used for co-channel interference calculation. The other UEs that do not use the time-frequency resource may utilize the measured SINR (signal to interference and noise ratio), RSRP (reference signal received power), RSSI (received signal energy indication), or RSRQ (reference signal reception quality), and the like. Various parameters are used to calculate co-channel interference on the time-frequency resource. The result of the co-channel interference obtained by the above calculation may be partially or fully fed back to the UE.

In step S2, co-channel interference fed back by other UEs that do not use the time-frequency resource is received, wherein the co-channel interference is calculated by the other UEs based on reference signals received on the time-frequency resources thereof, respectively. In this step, the feedback result of some or all of the other UEs that do not use the time-frequency resource may be fed back to the UE. Of course, the feedback result may be fed back by other UEs to the UE using the same time-frequency resource. One or more UEs.

In step S3, the power for information transmission is determined based on the co-channel interference. In one example, the UE tends to select an appropriate information transmission power to make the co-channel interference as small as possible. In addition, the UE also tends to select as little power as possible on this basis to minimize the cross-effect between multiple UEs. Therefore, in the process of determining the power of the information transmission by the UE, the UE may further consider the foregoing. Various parameters or signaling indications included in the scheduling information. For example, the UE may adjust the power of the information transmission by considering a weighting factor sent by the base station in the scheduling information. In an example, the base station may allocate a weighting factor to the UE to ensure information receiving and decoding effects of one or more UEs for receiving information transmitted by each UE, optionally, the weight value may be guaranteed. Around 100 UEs of X, the UE can receive and successfully decode the information sent by the UE. In another example, the weighting factor may also represent a priority attribute of the UE in the communication system to ensure that a higher priority UE can have higher communication quality, so that a UE with a higher weight factor may be able to Select a higher power for information transmission. In one example, the weighting factor can take any value between 0 and 1. In addition, the period in which the UE determines that the power of the information transmission may be shorter than the period of the SPS scheduling information sent by the base station, for example, may be 10 ms, 20 ms, or 100 ms, so that the UE can control and adjust the information transmission power in time to improve the communication quality. .

FIG. 3 is a timing chart showing the base station transmitting scheduling information and the UE determining information transmission power in the communication system according to the embodiment of the present invention. As shown in FIG. 3, the communication system includes a base station and UE1-UE4. In (1) and (2), the UE1 and the UE2 respectively report the scheduling request to the base station, and can report the geographical location information and/or the channel large-scale fading information together. After receiving the information reported by UE1 and UE2, the base station allocates mutually non-orthogonal time-frequency resources for UE1 and UE2, and indicates to UE1 and UE2 by scheduling information in (3) and (4), respectively. In the time period shown in FIG. 3, UE3 and UE4 are not allocated by the base station with time-frequency resources that are non-orthogonal to UE1 and UE2, that is, UE3 and UE4 do not use the time-frequency resources of UE1 and UE2. After receiving the time-frequency resource scheduling information sent by the base station, UE1 and UE2 respectively broadcast reference signals ((5)-(8)) to UE3 and UE4 by using the allocated time-frequency resources. Subsequently, UE3 calculates co-channel interference using the reference signals from UE1 and UE2 received in (5) and (7), respectively, and feeds back to UE1 and UE2 in (9) and (10) respectively; The reference signals received from UE1 and UE2, respectively received in (6) and (8), calculate co-channel interference and are fed back to UE1 and UE2 in (11) and (12), respectively. Finally, the UE1 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (9) and (11). Alternatively, the UE1 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. The UE2 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (10) and (12). Of course, the UE2 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. In addition, UE1 or UE2 may also consider the feedback of UE3 or UE4 to determine the power of information transmission.

In step S103, information transmission is performed by using the determined power and the time-frequency resource indicated by the scheduling information.

In this step, the UE uses the time-frequency resources determined by the base station and the autonomously determined information transmission power to transmit information within its communication range. Optionally, the UE may use the time-frequency resource determined by the base station and the autonomously determined information sending power to send information through the UE-UE direct link. In addition, when receiving the scheduling information, the UE may simultaneously transmit the current information and the reference signal by using the initial transmit power set by the base station included in the scheduling information for the UE, and then use the received other UE according to the reference. The co-channel interference of the signal feedback determines the transmission power of the next information and transmits the information.

With the resource scheduling method performed by the UE according to the present invention, the time-frequency resource that enables the UE to perform information transmission is determined by the base station, and the transmission power of the UE is determined by the UE autonomously, thereby effectively reducing the UE-to-UE direct link ( The signaling cost of SL) improves the channel resource utilization of the system and reduces resource waste.

The embodiment of the invention further provides a resource scheduling method, which is performed by a base station. FIG. 4 shows a flow diagram of a resource scheduling method 400 in accordance with an embodiment of the present invention.

As shown in FIG. 4, in step S401, the UE performs scheduling of time-frequency resources for information transmission, so that the time-frequency resources of the UE are orthogonal or non-orthogonal to the time-frequency resources of other UEs.

In the embodiment of the present invention, the time-frequency resource that the base station schedules the UE to send information may be a physical resource. Optionally, the UE may first send related information to the base station to enable the base station to schedule the UE accordingly. For example, the UE may send the geographic location information of the UE and/or the channel large-scale fading information to the base station, so that the base station schedules the time-frequency resources of the UE according to the geographic location information of the UE and/or the channel large-scale fading information. Generate scheduling information. The channel large-scale fading information may be, for example, large-scale fading information of uplink and/or downlink transmission channels between the UE and the base station. Specifically, the base station may directly perform time-frequency resource scheduling according to the geographical location information reported by the UE, or may perform large-scale fading information of the channel calculated according to the geographical location information reported by the UE, or directly receive the large-scale fading information of the channel reported by the UE. The time-frequency resource scheduling is performed; the time-frequency resource scheduling can also be performed by comprehensively considering the geographical location information reported by the UE and the large-scale fading information of the channel.

In an example, the time-frequency resource allocated by the base station to the UE may be completely orthogonal to the time-frequency resource allocated by the base station to other UEs; in another example, the time-frequency resource allocated by the base station to the UE may be The time-frequency resources allocated by one or some UEs are non-orthogonal. When the time-frequency resources allocated by the base station to the UE are orthogonal to the time-frequency resources allocated by the base station to other UEs, the quality of the information sent by the UE is better because the UE and other UEs do not interfere with each other when the information is transmitted. However, when the time-frequency resources allocated by the base station for the UE are not orthogonal to the time-frequency resources allocated by the base station to other UEs, the system may satisfy the system while satisfying certain information transmission quality. Capacity gain to improve channel resource utilization.

In an example, when the time-frequency resource allocated by the base station to the UE is non-orthogonal with the time-frequency resource allocated by the base station to some or some UEs, one or more UEs that are allocated the same time-frequency resource by the base station may occur. Match the pair. When the base station performs the matching of the same time-frequency resources between the UEs in the case of non-orthogonal resource allocation, the matching may be performed on the time slots first, and then the frequency resources are matched. Wherein, when matching the time slot, it is considered that each UE tends to select other UEs that are farther away from itself to form a pairing to avoid potential collision, so that the cross-impact influence of the communication coverage between the UE matching pairs is minimized, and therefore, The best matching manner of the UE matching pair on the time slot is calculated by using factors such as geographical location information reported by the foregoing UE. In addition, optionally, a pair of UEs whose inter-UE distance is less than a certain threshold may be set as a forbidden pair to exclude slot matching between the forbidden pairs when the UE matches the calculation, so as to reduce the inter-channel as much as possible. interference. Then, in the process of frequency matching, the base station may further consider, for example, channel large-scale fading information reported by the UE or channel large-scale fading information calculated according to the geographical location information reported by the UE, thereby calculating that the UE is in the frequency domain channel on the same time slot. Co-channel cross-interference on the same channel to adjust the matching result of the UE matching pair to obtain the UE matching pair on the same same time-frequency resource.

In step S402, the scheduling information is sent to the UE, where the scheduling information is used to indicate that the base station schedules time-frequency resources for the UE, so that the UE uses the autonomously determined power and the scheduling information to indicate Time-frequency resources are used for information transmission.

Optionally, the scheduling information sent by the base station may be sent in a semi-persistent scheduling (SPS) manner. In the SPS scheduling information, the scheduling period may be relatively long, for example, tens of milliseconds, hundreds of milliseconds, or seconds, to minimize the signaling transmission burden between the base station and the UE. Optionally, the scheduling information that is sent by the base station to the UE may include not only the time-frequency resource scheduling information of the UE that is sent by the base station, but also the number of UEs on the same time-frequency resource, the UE identifier used for UE detection, and the UE. And one or more of an initial power of transmitting information, a sending timer/counter of SPS scheduling information, a weighting factor of the UE, and a transmission priority of the UE, wherein the weighting factor may assist the UE to perform one or more of the following functions Including the UE's transmit power adjustment, the UE's transmission rate adjustment, and so on. In addition, the specific content of the foregoing scheduling information may be pre-configured by the base station to the UE, and controlled by the base station to partially or completely activate the configurations, or may be sent by the base station to notify the UE in the signaling transmission process.

In an example, after the UE receives the scheduling information sent by the base station, the UE may use the time-frequency resource indicated by the scheduling information and the autonomously determined power to perform information transmission. The method for the UE to determine the information transmission power autonomously can be as shown in FIG. 2 . 2 shows a flow diagram of a method 102 of determining information transmission power in accordance with an embodiment of the present invention. Wherein, in step S1, the reference signal is broadcasted by the time-frequency resource indicated by the scheduling information. Specifically, after the UE receives the scheduling information indicating the time-frequency resource allocation sent by the base station, the reference signal broadcast may be performed according to the time-frequency resource indicated by the scheduling information, so that other UEs that do not use the time-frequency resource receive and perform the reference signal. Computation of co-channel interference. Optionally, the other UE that does not use the time-frequency resource may perform co-channel interference calculation on all received reference signals broadcasted by the time-frequency resource, or may also broadcast a part of the received time-frequency resource through the received time-frequency resource. The reference signal is used for co-channel interference calculation. The other UEs that do not use the time-frequency resource may utilize the measured SINR (signal to interference and noise ratio), RSRP (reference signal received power), RSSI (received signal energy indication), or RSRQ (reference signal reception quality), and the like. Various parameters are used to calculate co-channel interference on the time-frequency resource. The result of the co-channel interference obtained by the above calculation may be partially or fully fed back to the UE.

In step S2, co-channel interference fed back by other UEs that do not use the time-frequency resource is received, wherein the co-channel interference is calculated by the other UEs based on reference signals received on the time-frequency resources thereof, respectively. In this step, the feedback result of some or all of the other UEs that do not use the time-frequency resource may be fed back to the UE. Of course, the feedback result may be fed back by other UEs to the UE using the same time-frequency resource. One or more UEs.

In step S3, the power for information transmission is determined based on the co-channel interference. In one example, the UE tends to select an appropriate information transmission power to make the co-channel interference as small as possible. In addition, the UE also tends to select as little power as possible on this basis to minimize the cross-effect between multiple UEs. Therefore, in the process of determining the power of the information transmission by the UE, the UE may further consider the foregoing. Various parameters or signaling indications included in the scheduling information. For example, the UE may adjust the power of the information transmission by considering a weighting factor sent by the base station in the scheduling information. In an example, the base station may allocate a weighting factor to the UE to ensure information receiving and decoding effects of one or more UEs for receiving information transmitted by each UE, optionally, the weight value may be guaranteed. Around 100 UEs of X, the UE can receive and successfully decode the information sent by the UE. In another example, the weighting factor may also represent a priority attribute of the UE in the communication system to ensure that a higher priority UE can have higher communication quality, so that a UE with a higher weight factor may be able to Select a higher power for information transmission. In one example, the weighting factor can take any value between 0 and 1. In addition, the period in which the UE determines that the power of the information transmission may be shorter than the period of the SPS scheduling information sent by the base station, for example, may be 10 ms, 20 ms, or 100 ms, so that the UE can control and adjust the information transmission power in time to improve the communication quality. .

FIG. 3 is a timing chart showing the base station transmitting scheduling information and the UE determining information transmission power in the communication system according to the embodiment of the present invention. As shown in FIG. 3, the communication system includes a base station and UE1-UE4. In (1) and (2), the UE1 and the UE2 respectively report the scheduling request to the base station, and can report the geographical location information and/or the channel large-scale fading information together. After receiving the information reported by UE1 and UE2, the base station allocates mutually non-orthogonal time-frequency resources for UE1 and UE2, and indicates to UE1 and UE2 by scheduling information in (3) and (4), respectively. In the time period shown in FIG. 3, UE3 and UE4 are not allocated by the base station with time-frequency resources that are non-orthogonal to UE1 and UE2, that is, UE3 and UE4 do not use the time-frequency resources of UE1 and UE2. After receiving the time-frequency resource scheduling information sent by the base station, UE1 and UE2 respectively broadcast reference signals ((5)-(8)) to UE3 and UE4 by using the allocated time-frequency resources. Subsequently, UE3 calculates co-channel interference using the reference signals from UE1 and UE2 received in (5) and (7), respectively, and feeds back to UE1 and UE2 in (9) and (10) respectively; The reference signals received from UE1 and UE2, respectively received in (6) and (8), calculate co-channel interference and are fed back to UE1 and UE2 in (11) and (12), respectively. Finally, the UE1 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (9) and (11). Alternatively, the UE1 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. The UE2 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (10) and (12). Of course, the UE2 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. In addition, UE1 or UE2 may also consider the feedback of UE3 or UE4 to determine the power of information transmission.

Then, optionally, the UE may use the time-frequency resources determined by the base station and the autonomously determined information transmission power to transmit information through the UE-UE direct link. In addition, when receiving the scheduling information, the UE may simultaneously transmit the current information and the reference signal by using the initial transmit power set by the base station included in the scheduling information for the UE, and then use the received other UE according to the reference. The co-channel interference of the signal feedback determines the transmission power of the next information and transmits the information.

With the resource scheduling method performed by the base station according to the present invention, the time-frequency resource that enables the UE to perform information transmission is determined by the base station, and the transmission power of the UE is determined by the UE autonomously, thereby effectively reducing the UE-to-UE direct link ( The signaling cost of SL) improves the channel resource utilization of the system and reduces resource waste.

Next, a UE according to an embodiment of the present invention will be described with reference to FIG. FIG. 5 is a block diagram showing a UE 500 in accordance with one embodiment of the present invention. As shown in FIG. 5, the UE 500 includes a receiving unit 510, a determining unit 520, and a transmitting unit 530. The UE 500 may include other components in addition to these three units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein. In addition, since the specific details of the following operations performed by the UE 500 according to the embodiment of the present invention are the same as those described above with reference to FIGS. 1 to 3, repeated description of the same details is omitted herein to avoid repetition.

As shown in FIG. 5, the receiving unit 510 receives the scheduling information sent by the base station, where the scheduling information is used to indicate the time-frequency resource used by the base station to perform information transmission for the UE, and the time-frequency resource of the UE is The time-frequency resources of other UEs are orthogonal or non-orthogonal.

In the embodiment of the present invention, the base station generates the scheduling information of the UE by scheduling the time-frequency resource for the information transmission by the UE, and sends scheduling information indicating the time-frequency resource allocated by the base station to the UE to the UE. Optionally, the time-frequency resource may be a physical resource.

Optionally, the UE 500 may further send related information to the base station by using the sending unit 530, so that the base station performs scheduling on the UE accordingly. For example, the sending unit 530 may send the geographic location information of the UE and/or the channel large-scale fading information to the base station, so that the base station schedules the UE according to the geographic location information of the UE and/or the channel large-scale fading information. Time-frequency resources, generating scheduling information. The channel large-scale fading information may be, for example, large-scale fading information of uplink and/or downlink transmission channels between the UE and the base station. Specifically, the base station may directly perform time-frequency resource scheduling according to the geographical location information reported by the UE, or may perform large-scale fading information of the channel calculated according to the geographical location information reported by the UE, or directly receive the large-scale fading information of the channel reported by the UE. The time-frequency resource scheduling is performed; the time-frequency resource scheduling can also be performed by comprehensively considering the geographical location information reported by the UE and the large-scale fading information of the channel.

In an example, the time-frequency resource allocated by the base station to the UE may be completely orthogonal to the time-frequency resource allocated by the base station to other UEs; in another example, the time-frequency resource allocated by the base station to the UE may be The time-frequency resources allocated by one or some UEs are non-orthogonal. When the time-frequency resources allocated by the base station to the UE are orthogonal to the time-frequency resources allocated by the base station to other UEs, the quality of the information sent by the UE is better because the UE and other UEs do not interfere with each other when the information is transmitted. However, when the time-frequency resources allocated by the base station for the UE are not orthogonal to the time-frequency resources allocated by the base station to other UEs, the system may satisfy the system while satisfying certain information transmission quality. Capacity gain to improve channel resource utilization.

In an example, when the time-frequency resource allocated by the base station to the UE is non-orthogonal with the time-frequency resource allocated by the base station to some or some UEs, one or more UEs that are allocated the same time-frequency resource by the base station may occur. Match the pair. When the base station performs the matching of the same time-frequency resources between the UEs in the case of non-orthogonal resource allocation, the matching may be performed on the time slots first, and then the frequency resources are matched. Wherein, when matching time slots, it is considered that each UE tends to select other UEs that are farther away from itself to form a pairing to avoid potential collisions, so that the cross-impact influence of the communication coverage between the UE matching pairs is minimized, and therefore, The best matching manner of the UE matching pair on the time slot is calculated by using factors such as geographical location information reported by the foregoing UE. In addition, optionally, a pair of UEs whose inter-UE distance is less than a certain threshold may be set as a forbidden pair to exclude slot matching between the forbidden pairs when the UE matches the calculation, so as to reduce the inter-channel as much as possible. interference. Then, in the process of frequency matching, the base station may further consider, for example, channel large-scale fading information reported by the UE or channel large-scale fading information calculated according to the geographical location information reported by the UE, thereby calculating that the UE is in the frequency domain channel on the same time slot. Co-channel cross-interference on the same channel to adjust the matching result of the UE matching pair to obtain the UE matching pair on the same same time-frequency resource.

Optionally, the scheduling information sent by the base station received by the receiving unit 510 may be scheduling information that is sent by the base station in a semi-persistent scheduling (SPS) manner. In the SPS scheduling information, the scheduling period may be relatively long, for example, tens of milliseconds, hundreds of milliseconds, or seconds, to minimize the signaling transmission burden between the base station and the UE. Optionally, the scheduling information received by the receiving unit 510 may include not only the time-frequency resource scheduling information of the UE sent by the base station, but also the number of UEs on the same time-frequency resource, the UE identifier for the UE, and the UE. One or more of initial power for transmitting information, a transmission timer/counter of SPS scheduling information, a weighting factor of the UE, and a transmission priority of the UE, wherein the weighting factor may assist the UE to perform one or more of the following Functions include transmission adjustment of the UE, transmission rate adjustment of the UE, and the like. In addition, the specific content of the foregoing scheduling information may be pre-configured by the base station to the UE, and controlled by the base station to partially or completely activate the configurations, or may be sent by the base station to notify the UE in the signaling transmission process.

Subsequently, the determining unit 520 determines the power to perform the information transmission.

2 shows a flow diagram of a method 102 of determining information transmission power employed by determining unit 520, in accordance with an embodiment of the present invention. As shown in FIG. 2, in step S1, the determining unit 520 broadcasts the reference signal using the time-frequency resource indicated by the scheduling information. Specifically, after the receiving unit 510 of the UE receives the scheduling information indicating the time-frequency resource allocation sent by the base station, the determining unit 520 may perform the reference signal broadcast according to the time-frequency resource indicated by the scheduling information, so that the time-frequency is not used. Other UEs of the resource receive and perform co-channel interference calculations. Optionally, the other UE that does not use the time-frequency resource may perform co-channel interference calculation on all received reference signals broadcasted by the time-frequency resource, or may also broadcast a part of the received time-frequency resource through the received time-frequency resource. The reference signal is used for co-channel interference calculation. The other UEs that do not use the time-frequency resource may utilize the measured SINR (signal to interference and noise ratio), RSRP (reference signal received power), RSSI (received signal energy indication), or RSRQ (reference signal reception quality), and the like. Various parameters are used to calculate co-channel interference on the time-frequency resource. The result of the co-channel interference obtained by the above calculation may be partially or fully fed back to the UE.

In step S2, the determining unit 520 receives co-channel interference fed back by other UEs that do not use the time-frequency resource, wherein the co-channel interference is respectively based on the reference signal received by the other UE on the time-frequency resource thereof. Calculated. In this step, the feedback result of some or all of the other UEs that do not use the time-frequency resource may be fed back to the UE. Of course, the feedback result may be fed back by other UEs to the UE using the same time-frequency resource. One or more UEs.

In step S3, the determining unit 520 determines the power to perform information transmission based on the co-channel interference. In one example, the determining unit 520 tends to select an appropriate information transmission power to make the co-channel interference as small as possible. In addition, the determining unit 520 also tends to select as little power as possible on the basis to minimize the cross-effect between the plurality of UEs. Therefore, in the process of determining the power of the information transmission by the determining unit 520, further Consider various parameters or signaling indications included in the aforementioned scheduling information. For example, the determining unit 520 can adjust the power of the information transmission by considering the weighting factor sent by the base station in the scheduling information. In an example, the base station may allocate a weighting factor to the UE to ensure information receiving and decoding effects of one or more UEs for receiving information transmitted by each UE, optionally, the weight value may be guaranteed. Around 100 UEs of X, the UE can receive and successfully decode the information sent by the UE. In another example, the weighting factor may also represent a priority attribute of the UE in the communication system to ensure that a higher priority UE can have higher communication quality, so that a UE with a higher weight factor may be able to Select a higher power for information transmission. In one example, the weighting factor can take any value between 0 and 1. In addition, the determining unit 520 determines that the period of the power of the information transmission may be shorter than the period of the SPS scheduling information sent by the base station, for example, may be 10 ms, 20 ms, or 100 ms, so that the UE can control and adjust the information sending power in time, and improve the communication quality. .

FIG. 3 is a timing chart showing the base station transmitting scheduling information and the UE determining information transmission power in the communication system according to the embodiment of the present invention. As shown in FIG. 3, the communication system includes a base station and UE1-UE4. In (1) and (2), the UE1 and the UE2 respectively report the scheduling request to the base station, and can report the geographical location information and/or the channel large-scale fading information together. After receiving the information reported by UE1 and UE2, the base station allocates non-orthogonal time-frequency resources for UE1 and UE2, and indicates to UE1 and UE2 by scheduling information in (3) and (4), respectively. In the time period shown in FIG. 3, UE3 and UE4 are not allocated by the base station with time-frequency resources that are non-orthogonal to UE1 and UE2, that is, UE3 and UE4 do not use the time-frequency resources of UE1 and UE2. After receiving the time-frequency resource scheduling information sent by the base station, UE1 and UE2 respectively broadcast reference signals ((5)-(8)) to UE3 and UE4 by using the allocated time-frequency resources. Subsequently, UE3 calculates co-channel interference using the reference signals from UE1 and UE2 received in (5) and (7), respectively, and feeds back to UE1 and UE2 in (9) and (10) respectively; The reference signals received from UE1 and UE2, respectively received in (6) and (8), calculate co-channel interference and are fed back to UE1 and UE2 in (11) and (12), respectively. Finally, the UE1 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (9) and (11). Alternatively, the UE1 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. The UE2 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (10) and (12). Of course, the UE2 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. In addition, UE1 or UE2 may also consider the feedback of UE3 or UE4 to determine the power of information transmission.

The transmitting unit 530 performs information transmission by using the determined power and the time-frequency resource indicated by the scheduling information.

The transmitting unit 530 transmits the information within its communication range by using the time-frequency resource determined by the base station and the autonomously determined information transmission power. Optionally, the sending unit 530 may use the time-frequency resource determined by the base station and the autonomously determined information sending power to send information through the UE-UE direct link. In addition, the sending unit 530 may simultaneously transmit the current information and the reference signal by using the initial transmit power set by the base station included in the scheduling information for the UE when receiving the scheduling information, and then use the received other UE according to the The co-channel interference of the reference signal feedback is used to determine the transmission power of the next information, and the information is transmitted.

With the UE according to the embodiment of the present invention, the time-frequency resource capable of ensuring that the UE performs information transmission is determined by the base station, and the transmission power of the UE is determined by the UE autonomously, thereby effectively reducing the UE to the UE Direct Link (SL). Signaling cost, improve channel resource utilization of the system, and reduce resource waste.

Next, a base station according to an embodiment of the present invention will be described with reference to FIG. Figure 6 is a block diagram showing a base station 600 in accordance with one embodiment of the present invention. As shown in FIG. 6, the base station 600 includes a scheduling unit 610 and a transmitting unit 620. The base station 600 may include other components in addition to these two units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein. In addition, since the specific details of the operations described below performed by the base station 600 according to the embodiment of the present invention are the same as those described above with reference to FIG. 4, repeated description of the same details is omitted herein to avoid redundancy.

As shown in FIG. 6, the scheduling unit 610 schedules time-frequency resources for transmitting information by the UE, so that the time-frequency resources of the UE are orthogonal or non-orthogonal to the time-frequency resources of other UEs.

In the embodiment of the present invention, the time-frequency resource that the scheduling unit 610 schedules the UE to perform information transmission may be a physical resource. Optionally, the UE may first send related information to the base station, so that the scheduling unit 610 of the base station schedules the UE accordingly. For example, the UE may send the geographic location information of the UE and/or the channel large-scale fading information to the base station, so that the scheduling unit 610 schedules the time-frequency of the UE according to the geographic location information of the UE and/or the channel large-scale fading information. Resources, generate scheduling information. The channel large-scale fading information may be, for example, large-scale fading information of uplink and/or downlink transmission channels between the UE and the base station. Specifically, the scheduling unit 610 may directly perform time-frequency resource scheduling according to the geographic location information reported by the UE, or may perform channel large-scale fading information calculated according to the geographical location information reported by the UE, or directly receive the channel large-scale reported by the UE. The fading information is scheduled for time-frequency resources; the time-frequency resource scheduling can also be performed by considering the geographical location information reported by the UE and the large-scale fading information of the channel.

In an example, the time-frequency resource allocated by the scheduling unit 610 to the UE may be completely orthogonal to the time-frequency resource allocated by the base station to other UEs; in another example, the scheduling unit 610 allocates the time-frequency resource to the UE. The time-frequency resources allocated by the base station to some or some UEs may be non-orthogonal. When the time-frequency resource allocated by the scheduling unit 610 for the UE is orthogonal to the time-frequency resource allocated by the base station to other UEs, the quality of the information sent by the UE is not interfered by the UE and other UEs when the information is transmitted. Preferably, the channel resource utilization is low; and when the time-frequency resource allocated by the scheduling unit 610 for the UE is not orthogonal to the time-frequency resource allocated by the base station to other UEs, the information transmission quality may be satisfied. At the same time, try to meet the capacity gain of the system and improve the utilization of channel resources.

In an example, when the time-frequency resource allocated by the scheduling unit 610 for the UE is non-orthogonal with the time-frequency resource allocated by the base station for some or some UEs, one of the same time-frequency resources allocated by the scheduling unit 610 may occur. Or multiple UEs match pairs. When the scheduling unit 610 performs the matching of the same time-frequency resources between the UEs in the case of non-orthogonal resource allocation, the matching may be performed on the time slots first, and then the frequency resources are matched. Wherein, when matching time slots, it is considered that each UE tends to select other UEs that are farther away from itself to form a pairing to avoid potential collisions, so that the cross-impact influence of the communication coverage between the UE matching pairs is minimized, and therefore, The best matching manner of the UE matching pair on the time slot is calculated by using factors such as geographical location information reported by the foregoing UE. In addition, optionally, a pair of UEs whose inter-UE distance is less than a certain threshold may be set as a forbidden pair to exclude slot matching between the forbidden pairs when the UE matches the calculation, so as to reduce the inter-channel as much as possible. interference. Then, in the process of frequency matching, the scheduling unit 610 may further consider, for example, the channel large-scale fading information reported by the UE or the channel large-scale fading information calculated according to the geographical location information reported by the UE, thereby calculating the UE frequency in the same time slot. Co-channel cross-interference on the domain channel to adjust the matching result of the UE matching pair to obtain the UE matching pair on the same same time-frequency resource.

The sending unit 620 sends scheduling information to the UE, where the scheduling information is used to indicate time-frequency resources scheduled by the base station for the UE, so that the UE uses the autonomously determined power and the time-frequency indicated by the scheduling information. The resource sends information.

Optionally, the scheduling information sent by the sending unit 620 may be sent in a semi-persistent scheduling (SPS) manner. In the SPS scheduling information, the scheduling period may be relatively long, for example, tens of milliseconds, hundreds of milliseconds, or seconds, to minimize the signaling transmission burden between the base station and the UE. Optionally, the scheduling information that is sent by the sending unit 620 to the UE may include not only the time-frequency resource scheduling information of the UE that is sent by the base station, but also the number of UEs on the same time-frequency resource, the UE identifier used for UE detection, The UE is configured to send one or more of initial power of information, a sending timer/counter of SPS scheduling information, a weighting factor of the UE, and a transmission priority of the UE, where the weighting factor may assist the UE to perform one or more of the following: The functions include the UE's transmit power adjustment, the UE's transmission rate adjustment, and so on. In addition, the specific content of the foregoing scheduling information may be pre-configured by the base station to the UE, and controlled by the base station to partially or completely activate the configurations, or may be sent by the base station to notify the UE in the signaling transmission process.

In an example, after the UE receives the scheduling information sent by the base station, the UE may use the time-frequency resource indicated by the scheduling information and the autonomously determined power to perform information transmission. The method for the UE to determine the information transmission power autonomously can be as shown in FIG. 2 . 2 shows a flow diagram of a method 102 of determining information transmission power in accordance with an embodiment of the present invention. Wherein, in step S1, the reference signal is broadcasted by the time-frequency resource indicated by the scheduling information. Specifically, after the UE receives the scheduling information indicating the time-frequency resource allocation sent by the base station, the reference signal broadcast may be performed according to the time-frequency resource indicated by the scheduling information, so that other UEs that do not use the time-frequency resource receive and perform the reference signal. Computation of co-channel interference. Optionally, the other UE that does not use the time-frequency resource may perform co-channel interference calculation on all received reference signals broadcasted by the time-frequency resource, or may also broadcast a part of the received time-frequency resource through the received time-frequency resource. The reference signal is used for co-channel interference calculation. The other UEs that do not use the time-frequency resource may utilize the measured SINR (signal to interference and noise ratio), RSRP (reference signal received power), RSSI (received signal energy indication), or RSRQ (reference signal reception quality), and the like. Various parameters are used to calculate co-channel interference on the time-frequency resource. The result of the co-channel interference obtained by the above calculation may be partially or fully fed back to the UE.

In step S2, co-channel interference fed back by other UEs that do not use the time-frequency resource is received, wherein the co-channel interference is calculated by the other UEs based on reference signals received on the time-frequency resources thereof, respectively. In this step, the feedback result of some or all of the other UEs that do not use the time-frequency resource may be fed back to the UE. Of course, the feedback result may be fed back by other UEs to the UE using the same time-frequency resource. One or more UEs.

In step S3, the power for information transmission is determined based on the co-channel interference. In one example, the UE tends to select an appropriate information transmission power to make the co-channel interference as small as possible. In addition, the UE also tends to select as little power as possible on this basis to minimize the cross-effect between multiple UEs. Therefore, in the process of determining the power of the information transmission by the UE, the UE may further consider the foregoing. Various parameters or signaling indications included in the scheduling information. For example, the UE may adjust the power of the information transmission by considering a weighting factor sent by the base station in the scheduling information. In an example, the base station may allocate a weighting factor to the UE to ensure information receiving and decoding effects of one or more UEs for receiving information transmitted by each UE. Alternatively, the base station may guarantee the weight value. At least 100X% of UEs around X are able to receive and successfully decode the information sent by this UE. In another example, the weighting factor may also represent a priority attribute of the UE in the communication system to ensure that a higher priority UE can have higher communication quality, so that a UE with a higher weight factor may be able to Select a higher power for information transmission. In one example, the weighting factor can take any value between 0 and 1. In addition, the period in which the UE determines that the power of the information transmission may be shorter than the period of the SPS scheduling information sent by the base station, for example, may be 10 ms, 20 ms, or 100 ms, so that the UE can control and adjust the information transmission power in time to improve the communication quality. .

FIG. 3 is a timing chart showing that the base station transmits scheduling information by the transmitting unit 620 and the UE determines the information transmission power in the communication system according to the embodiment of the present invention. As shown in FIG. 3, the communication system includes a base station and UE1-UE4. In (1) and (2), the UE1 and the UE2 respectively report the scheduling request to the base station, and can report the geographical location information and/or the channel large-scale fading information together. After receiving the information reported by UE1 and UE2, the base station allocates mutually non-orthogonal time-frequency resources for UE1 and UE2, and indicates to UE1 and UE2 by scheduling information in (3) and (4), respectively. In the time period shown in FIG. 3, UE3 and UE4 are not allocated by the base station with time-frequency resources that are non-orthogonal to UE1 and UE2, that is, UE3 and UE4 do not use the time-frequency resources of UE1 and UE2. After receiving the time-frequency resource scheduling information sent by the base station, UE1 and UE2 respectively broadcast reference signals ((5)-(8)) to UE3 and UE4 by using the allocated time-frequency resources. Subsequently, UE3 calculates co-channel interference using the reference signals from UE1 and UE2 received in (5) and (7), respectively, and feeds back to UE1 and UE2 in (9) and (10) respectively; The reference signals received from UE1 and UE2, respectively received in (6) and (8), calculate co-channel interference and are fed back to UE1 and UE2 in (11) and (12), respectively. Finally, the UE1 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (9) and (11). Alternatively, the UE1 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. The UE2 determines the power of the information transmission through the feedback of the co-channel interference received from the UE3 and the UE4, which are received in (10) and (12). Of course, the UE2 may also consider the scheduling information sent by the base station. UE1's weighting factor adjusts its determined power. In addition, UE1 or UE2 may also consider the feedback of UE3 or UE4 to determine the power of information transmission.

Then, optionally, the UE may use the time-frequency resources determined by the base station and the autonomously determined information transmission power to transmit information through the UE-UE direct link. In addition, when receiving the scheduling information, the UE may simultaneously transmit the current information and the reference signal by using the initial transmit power set by the base station included in the scheduling information for the UE, and then use the received other UE according to the reference. The co-channel interference of the signal feedback determines the transmission power of the next information and transmits the information.

With the base station according to the embodiment of the present invention, the time-frequency resource that enables the UE to perform information transmission is determined by the base station, and the transmission power of the UE is determined by the UE autonomously, thereby effectively reducing the UE to the UE direct link (SL). Signaling cost, improve channel resource utilization of the system, and reduce resource waste.

In addition, the block diagram used in the description of the above embodiment shows a block in units of functions. These functional blocks (structural units) are implemented by any combination of hardware and/or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be implemented by one device that is physically and/or logically combined, or two or more devices that are physically and/or logically separated, directly and/or indirectly (eg, This is achieved by a plurality of devices as described above by a wired and/or wireless connection.

For example, a base station, a user terminal, or the like in an embodiment of the present invention can function as a computer that performs processing of the wireless communication method of the present invention. FIG. 7 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment of the present invention. The UE 500 and the base station 600 described above may be configured as a computer device that physically includes a processor 710, a memory 720, a memory 730, a communication device 740, an input device 750, an output device 760, a bus 770, and the like.

In addition, in the following description, characters such as "device" may be replaced with circuits, devices, units, and the like. The hardware structure of the UE 500 and the base station 600 may include one or more of the devices shown in the figure, or may not include some of the devices.

For example, processor 710 is only illustrated as one, but may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by one or more processors simultaneously, sequentially, or by other methods. Additionally, the processor 710 can be installed by more than one chip.

Each function in the UE 500 and the base station 600 is realized, for example, by reading a predetermined software (program) into hardware such as the processor 710 or the memory 720, thereby causing the processor 710 to perform an operation, and the communication device 740 performs the operation. The communication is controlled and the reading and/or writing of data in the memory 720 and the memory 730 is controlled.

The processor 710, for example, causes the operating system to operate to control the computer as a whole. The processor 710 may be constituted by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.

Further, the processor 710 reads out programs (program codes), software modules, data, and the like from the memory 730 and/or the communication device 740 to the memory 720, and executes various processes in accordance therewith. As the program, a program for causing a computer to execute at least a part of the operations described in the above embodiments can be employed.

The memory 720 is a computer readable recording medium, and may be, for example, a read only memory (ROM), a programmable read only memory (EPROM), an electrically programmable read only memory (EEPROM), or a random access memory ( At least one of RAM, Random Access Memory, and other suitable storage media. The memory 720 can also be referred to as a register, a cache, a main memory (primary storage device), or the like. The memory 720 can store an executable program (program code), a software module, and the like for implementing the resource scheduling method according to the embodiment of the present invention.

The memory 730 is a computer readable recording medium, and may be, for example, a flexible disk, a soft (registered trademark) disk (floppy disk), a magneto-optical disk (for example, a CD-ROM (Compact DiscROM), etc.), digital universal CD, Blu-ray (registered trademark) disc, removable disk, hard drive, smart card, flash device (eg card, stick, key driver), magnetic stripe, database, server And at least one of other suitable storage media. Memory 730 may also be referred to as an auxiliary storage device.

The communication device 740 is hardware (transmission and reception device) for performing communication between computers through a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, and the like, for example. The communication device 1004 may include a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement, for example, Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD).

The input device 750 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 760 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs an output to the outside. In addition, the input device 750 and the output device 760 may also be an integrated structure (for example, a touch panel).

Further, each device such as the processor 710, the memory 720, and the like are connected by a bus 770 for communicating information. The bus 770 may be composed of a single bus or a different bus between devices.

In addition, the UE 500 and the base station 600 may include a microprocessor, a digital signal processor (DSP, Digital Signal Processor), an application specific integrated circuit (ASIC), a programmable logic device (PLD, Programmable Logic Device), and a field programmable gate array (FPGA, Hardware such as FieldProgrammableGateArray), which can be used to implement part or all of each function block. For example, processor 710 can be installed by at least one of these hardware.

In addition, the terms used in the present specification and/or the terms required for understanding the present specification may be interchanged with terms having the same or similar meanings. For example, the channel and/or symbol can also be a signal (signaling). In addition, the signal can also be a message. The reference signal may also be simply referred to as RS (Reference Signal), and may also be referred to as a pilot (Pilot), a pilot signal, or the like according to applicable standards. In addition, a component carrier (CC, Component Carrier) may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

Further, the radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may be composed of one or more time slots in the time domain. The subframe may be a fixed length of time (eg, 1 ms) that is independent of the numerology.

Further, the time slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA, Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. In addition, the time slot can also be a time unit based on parameter configuration. In addition, the time slot may also include a plurality of minislots. Each minislot may be composed of one or more symbols in the time domain. In addition, a minislot can also be referred to as a subslot.

Radio frames, subframes, time slots, mini-slots, and symbols all represent time units when signals are transmitted. Radio frames, subframes, time slots, mini-slots, and symbols can also use other names that correspond to each other. For example, one subframe may be referred to as a transmission time interval (TTI, TransmissionTimeInterval), and multiple consecutive subframes may also be referred to as a TTI, and one slot or one minislot may also be referred to as a TTI. That is to say, the subframe and/or the TTI may be a subframe (1 ms) in the existing LTE, or may be a period shorter than 1 ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms. In addition, a unit indicating a TTI may also be referred to as a slot, a minislot, or the like instead of a subframe.

Here, TTI refers to, for example, a minimum time unit scheduled in wireless communication. For example, in the LTE system, the radio base station performs scheduling for all user terminals to allocate radio resources (bandwidth, transmission power, etc. usable in each user terminal) in units of TTIs. In addition, the definition of TTI is not limited to this.

The TTI may be a channel-coded data packet (transport block), a code block, and/or a codeword transmission time unit, or may be a processing unit such as scheduling, link adaptation, or the like. In addition, when a TTI is given, the time interval (e.g., the number of symbols) actually mapped to the transport block, code block, and/or codeword may also be shorter than the TTI.

In addition, when one time slot or one mini time slot is called TTI, more than one TTI (ie, more than one time slot or more than one micro time slot) may also become the scheduled minimum time unit. Further, the number of slots (the number of microslots) constituting the minimum time unit of the scheduling can be controlled.

A TTI having a length of 1 ms may also be referred to as a regular TTI (TTI in LTE Rel. 8-12), a standard TTI, a long TTI, a regular subframe, a standard subframe, or a long subframe. A TTI shorter than a conventional TTI may also be referred to as a compressed TTI, a short TTI, a partial TTI (partial or fractional TTI), a compressed subframe, a short subframe, a minislot, or a subslot.

In addition, a long TTI (eg, a regular TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms, and a short TTI (eg, a compressed TTI, etc.) may also be shorter than a TTI length longer than a long TTI and greater than 1 ms. Replace the TTI length of the TTI.

A resource block (RB, ResourceBlock) is a resource allocation unit of a time domain and a frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. In addition, the RB may include one or more symbols in the time domain, and may also be one slot, one minislot, one subframe, or one TTI. A TTI and a subframe may each be composed of one or more resource blocks. In addition, one or more RBs may also be referred to as a physical resource block (PRB, Physical RB), a sub-carrier group (SCG), a resource element group (REG, a resource element group), a PRG pair, an RB pair, and the like.

In addition, a resource block may also be composed of one or more resource elements (RE, ResourceElement). For example, one RE can be a subcarrier and a symbol of a radio resource area.

In addition, the above-described configurations of radio frames, subframes, time slots, mini-slots, symbols, and the like are merely examples. For example, the number of subframes included in the radio frame, the number of slots of each subframe or radio frame, the number of microslots included in the slot, the number of symbols and RBs included in the slot or minislot, and the number of RBs included in the RB The number of subcarriers, the number of symbols in the TTI, the symbol length, and the length of the cyclic prefix (CP, Cyclic Prefix) can be variously changed.

Further, the information, parameters, and the like described in the present specification may be expressed by absolute values, may be represented by relative values with predetermined values, or may be represented by other corresponding information. For example, wireless resources can be indicated by a specified index. Further, the formula or the like using these parameters may be different from those explicitly disclosed in the present specification.

The names used for parameters and the like in this specification are not limitative in any respect. For example, various channels (Physical Uplink Control Channel (PUCCH), Physical Downlink Control Channel (PDCCH), and information unit) can be identified by any appropriate name, and thus The various names assigned to these various channels and information elements are not limiting in any way.

The information, signals, and the like described in this specification can be expressed using any of a variety of different techniques. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc., which may be mentioned in all of the above description, may pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of them. Combined to represent.

Further, information, signals, and the like may be output from the upper layer to the lower layer, and/or from the lower layer to the upper layer. Information, signals, etc. can be input or output via a plurality of network nodes.

Information or signals input or output can be stored in a specific place (such as memory) or managed by a management table. Information or signals input or output may be overwritten, updated or supplemented. The output information, signals, etc. can be deleted. The input information, signals, etc. can be sent to other devices.

The notification of the information is not limited to the mode/embodiment described in the specification, and may be performed by other methods. For example, the notification of the information may be through physical layer signaling (eg, Downlink Control Information (DCI), uplink control information (UCI, Uplink Control Information), upper layer signaling (eg, radio resource control (RRC, RadioResourceControl). Signaling, broadcast information (MIB (Master Information Block), System Information Block (SIB, System Information Block), etc.), Media Access Control (MAC, Medium Access Control) signaling, other signals, or a combination thereof.

Further, the physical layer signaling may be referred to as L1/L2 (Layer 1/Layer 2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like. In addition, the RRC signaling may also be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like. Furthermore, the MAC signaling can be notified, for example, by a MAC Control Unit (MAC CE).

Further, the notification of the predetermined information (for example, the notification of "X") is not limited to being explicitly performed, and may be performed implicitly (for example, by not notifying the predetermined information or by notifying the other information).

Regarding the determination, it can be performed by a value (0 or 1) represented by 1 bit, or by a true or false value (boolean value) represented by true (true) or false (false), and can also be compared by numerical values ( For example, comparison with a predetermined value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, should be interpreted broadly to mean commands, command sets, code, code segments, program code, programs, sub- Programs, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, steps, functions, and the like.

Further, software, commands, information, and the like may be transmitted or received via a transmission medium. For example, when using wired technology (coax, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to send software from a website, server, or other remote source These wired technologies and/or wireless technologies are included within the definition of the transmission medium.

Terms such as "system" and "network" used in this specification are used interchangeably.

In this specification, "base station (BS, BaseStation)", "radio base station", "eNB", "gNB", "cell", "sector", "cell group", "carrier", and "component carrier" The terms are used interchangeably. The base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.

A base station can accommodate one or more (eg, three) cells (also referred to as sectors). When the base station accommodates multiple cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also pass through the base station subsystem (for example, a small indoor base station (RFH, remote head (RRH), RemoteRadioHead))) to provide communication services. The term "cell" or "sector" refers to a portion or the entirety of the coverage area of a base station and/or base station subsystem that performs communication services in the coverage.

In this specification, terms such as "mobile station (MS, MobileStation)", "user terminal", "user device (UE, UserEquipment)", and "terminal" are used interchangeably. The base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.

Mobile stations are also sometimes used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless Terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms are used.

In addition, the wireless base station in this specification can also be replaced with a user terminal. For example, each mode/embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user-to-device (D2D) devices. At this time, the functions of the base station 600 described above can be regarded as functions of the UE 500. In addition, words such as "upstream" and "downstream" can also be replaced with "side". For example, the uplink channel can also be replaced with a side channel.

Similarly, the UE in this specification can also be replaced with a base station. At this time, the functions of the UE 500 described above can be regarded as functions of the base station 600.

In the present specification, it is assumed that a specific operation performed by a base station is also performed by an upper node (upper node) depending on the situation. Obviously, in a network composed of one or more network nodes (network nodes) having a base station, various actions performed for communication with the terminal may pass through the base station and one or more network nodes other than the base station. (It may be considered, for example, a Mobility Management Entity (MME), a Serving-Gateway (S-GW, Serving-Gateway), etc., but not limited thereto), or a combination thereof.

The respective modes/embodiments described in the present specification may be used singly or in combination, and may be switched during use to be used. Further, the processing steps, sequences, flowcharts, and the like of the respective aspects/embodiments described in the present specification can be replaced unless there is no contradiction. For example, with regard to the methods described in the specification, various step units are given in an exemplary order, and are not limited to the specific order given.

The modes/embodiments described in this specification can be applied to Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), Long Term Evolution (LTE-B, LTE-Beyond), Super 3rd generation mobile communication system (SUPER 3G), advanced international mobile communication (IMT-Advanced), 4th generation mobile communication system (4G, 4th generation mobile communication system), 5th generation mobile communication system (5G, 5th generation mobile communication system) ), Future Radio Access (FRA), New-RAT (Radio Access Technology), New Radio (NR, New Radio), New Radio Access (NX), Next generation wireless access (FX, Future generation radio access), Global System for Mobile Communications (GSM (registered trademark), Global System for Mobile communications), Code Division Multiple Access 2000 (CDMA2000), Super Mobile Broadband (UMB, Ultra) Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra Wideband (UWB, Ultra-WideBand), Bluetooth (Bluet) Ooth (registered trademark), systems of other suitable wireless communication methods, and/or next generation systems that are extended based on them.

The description "as is" used in the present specification does not mean "based only" unless it is clearly stated in other paragraphs. In other words, the term "according to" means both "based only on" and "at least based on".

Any reference to a unit using the names "first", "second", etc., as used in this specification, does not fully limit the number or order of the units. These names can be used in this specification as a convenient method of distinguishing between two or more units. Thus, reference to a first element and a second element does not mean that only two elements may be employed or that the first element must prevail in the form of the second unit.

The term "determination" used in the present specification sometimes includes various actions. For example, regarding "judgment (determination)", calculation, calculation, processing, deriving, investigating, and lookingup (eg, tables, databases, or other data) may be performed. Search in the structure, ascertaining, etc. are considered to be "judgment (determination)". Further, regarding "judgment (determination)", reception (for example, receiving information), transmission (for example, transmission of information), input (input), output (output), and access (for example) may also be performed (for example, Accessing data in memory, etc. is considered to be "judgment (determination)". Further, regarding "judgment (determination)", it is also possible to consider "resolving", "selecting", selecting (choosing), establishing (comparing), comparing (comparing), etc. as "judging (determining)". That is to say, regarding "judgment (determination)", several actions can be regarded as performing "judgment (determination)".

The terms "connected" or "coupled" as used in the specification, or any variant thereof, mean any direct or indirect connection or combination between two or more units, This includes the case where there is one or more intermediate units between two units that are "connected" or "coupled" to each other. The combination or connection between the units may be physical, logical, or a combination of the two. For example, "connection" can also be replaced with "access". When used in this specification, two units may be considered to be electrically connected by using one or more wires, cables, and/or printed, and as a non-limiting and non-exhaustive example by using a radio frequency region. The electromagnetic energy of the wavelength of the region, the microwave region, and/or the light (both visible light and invisible light) is "connected" or "bonded" to each other.

When the terms "including", "comprising", and variations thereof are used in the specification or the claims, these terms are as open as the term "having". Further, the term "or" as used in the specification or the claims is not an exclusive or exclusive.

The present invention has been described in detail above, but it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the specification. The present invention can be implemented as a modification and modification without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the description of the specification is intended to be illustrative, and is not intended to limit the invention.

Claims (18)

  1. A resource scheduling method, which is performed by a UE, and includes:
    Receiving scheduling information sent by the base station, where the scheduling information is used to indicate time-frequency resources used by the base station to perform information transmission, and the time-frequency resources of the UE are orthogonal to time-frequency resources of other UEs or Non-orthogonal
    Determining the power to transmit information;
    Information transmission is performed by using the determined power and time-frequency resources indicated by the scheduling information.
  2. The method of claim 1, wherein before receiving the scheduling information sent by the base station, the method further comprises:
    Transmitting, to the base station, geographic location information of the UE and/or channel large-scale fading information, so that the base station generates the scheduling information.
  3. The method of claim 1 wherein
    The scheduling information further includes: a weighting factor of the UE;
    The determining the power for performing information transmission comprises: determining a power for performing information transmission according to a weighting factor of the UE.
  4. The method of claim 1, wherein the receiving the scheduling information sent by the base station comprises:
    Receiving scheduling information sent by the base station in a semi-persistent scheduling manner.
  5. The method of claim 1 wherein said determining the power to transmit information comprises:
    Using a time-frequency resource indicated by the scheduling information to broadcast a reference signal;
    Receiving co-channel interference fed back by other UEs that do not use the time-frequency resource, wherein the co-channel interference is calculated by the other UEs based on reference signals received on the time-frequency resource thereof;
    The power for transmitting information is determined based on the co-channel interference.
  6. A resource scheduling method, which is performed by a base station, and includes:
    Scheduling the time-frequency resources of the UE for information transmission, such that the time-frequency resources of the UE are orthogonal or non-orthogonal to the time-frequency resources of other UEs;
    And sending, to the UE, scheduling information, where the scheduling information is used to indicate that the base station schedules time-frequency resources for the UE, so that the UE performs information by using the autonomously determined power and the time-frequency resource indicated by the scheduling information. send.
  7. The method of claim 6, wherein the time-frequency resource for scheduling the information transmission by the UE further comprises:
    Receiving, by the UE, geographic location information and/or channel large-scale fading information of the UE;
    Scheduling the time-frequency resources of the UE according to the geographic location information of the UE and/or the channel large-scale fading information, and generating scheduling information.
  8. The method of claim 6, wherein the transmitting the scheduling information to the UE comprises:
    The scheduling information is sent to the UE in a semi-persistent scheduling manner.
  9. The method of claim 6, wherein the scheduling information further comprises:
    The weighting factor of the UE.
  10. A UE, including:
    a receiving unit, configured to receive scheduling information sent by the base station, where the scheduling information is used to indicate time-frequency resources used by the base station to perform information transmission for the UE, and time-frequency resources of the UE and other UEs Frequency resources are orthogonal or non-orthogonal;
    Determining a unit configured to determine a power to transmit information;
    And a sending unit, configured to perform information transmission by using the determined power and the time-frequency resource indicated by the scheduling information.
  11. The UE of claim 10, wherein
    The sending unit is configured to send the geographical location information of the UE and/or the channel large-scale fading information to the base station, so that the base station generates the scheduling information.
  12. The UE of claim 10, wherein
    The scheduling information further includes: a weighting factor of the UE;
    The determining unit determines the power for transmitting information according to the weighting factor of the UE.
  13. The UE of claim 10, wherein
    The receiving unit receives scheduling information that is sent by the base station in a semi-persistent scheduling manner.
  14. The UE of claim 10, wherein
    The determining unit broadcasts a reference signal by using a time-frequency resource indicated by the scheduling information;
    Receiving co-channel interference fed back by other UEs that do not use the time-frequency resource, wherein the co-channel interference is calculated by the other UEs based on reference signals received on the time-frequency resources thereof, respectively;
    The power for transmitting information is determined based on the co-channel interference.
  15. A base station comprising:
    a scheduling unit, configured to schedule a time-frequency resource for transmitting information by the UE, so that the time-frequency resource of the UE is orthogonal or non-orthogonal to the time-frequency resources of other UEs;
    a sending unit, configured to send scheduling information to the UE, where the scheduling information is used to indicate that the base station schedules time-frequency resources for the UE, so that the UE uses the autonomously determined power and the scheduling information to indicate Time-frequency resources are used for information transmission.
  16. The base station according to claim 15, wherein
    The scheduling unit receives geographic location information and/or channel large-scale fading information of the UE sent by the UE;
    Scheduling the time-frequency resources of the UE according to the geographic location information of the UE and/or the channel large-scale fading information, and generating scheduling information.
  17. The base station according to claim 15, wherein
    The sending unit sends scheduling information to the UE in a semi-persistent scheduling manner.
  18. The base station according to claim 15, wherein the scheduling information further comprises:
    The weighting factor of the UE.
PCT/CN2018/095109 2017-08-25 2018-07-10 Resource scheduling method, user equipment and base station WO2019037555A1 (en)

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