TWI690234B - Base station capable of allocating channel status report and method for allocating channel status report - Google Patents

Abstract

A base station capable of allocating channel status reports is disclosed. The base station includes a memory, a communication module and a processor. The processor is configured to send a RRC configuration message, including a periodical channel-state information parameter and a discontinuous reception parameter, to each of a plurality of user devices. The periodical channel-state information parameter includes a report period, a report-time shift and a set of information of PUCCH resource. The RRC configuration messages include the same report period, the same report-time shift and the same set of information of PUCCH resource. The processor is further configured to decide that one of a plurality of conflicting user devices in the plurality of user devices will perform a channel state information report when predicting that the plurality of conflicting user devices will perform a channel state information report at the same time. The processor is further configured to send a sleep command to the conflicting user devices other than the conflicting user device decided to perform the channel state information report.

Description

Base station for allocating channel status return and channel status return allocation method

The invention relates to a base station capable of allocating channel status returns and a method for allocating channel status returns.

In the current long-term evolution (LTE) network, in order to improve the efficiency of spectrum usage and provide better service quality for the user end, the network end often requires the user end to measure and report wireless channels. If the network requires user equipment (UE) to periodically report channel state information (CSI), it is usually configured through radio resource control (RRC) layer signaling. UE-specific physical uplink control channel (PUCCH) resources for periodic CSI reporting. However, when the number of UEs or the number of antennas increases, the overall bandwidth of the system occupied by PUCCH will increase accordingly, resulting in a reduction in the available uplink bandwidth of the user terminal, that is, the physical uplink shared channel (PUSCH) bandwidth becomes less.

Generally speaking, compared with the resource scheduling period of the media access control (MAC) layer, the configuration of the radio resource control (RRC) layer is still a semi-static configuration. After the configuration, the MAC layer performs its period of time (several seconds) It will take a few minutes) to modify it, otherwise the signaling overhead between the network and the client will be too large. Therefore, the traditional periodic CSI return configuration does not dynamically adjust the use of PUCCH according to the queue length of the radio bearer and the resource scheduling period of the MAC layer.

The present invention proposes a base station and channel status report for allocating channel status report With the deployment method, the base station can dynamically allocate PUCCH resources to the user equipment for periodic CSI return according to the amount of data in the current queue of the radio bearer of the user equipment.

According to an embodiment of the present invention, a base station capable of allocating channel status reports is disclosed, which includes a memory, a communication module, and an arithmetic processor that connects the memory and the communication module. The arithmetic processor is configured to execute driving the communication module to send radio resource control (RRC) configuration messages to multiple user equipments respectively, wherein the RRC configuration messages include periodic channel status information reporting parameters and discontinuous reception parameters, and the periodic channel status Information report parameters include report period, report time shift, and physical uplink control channel (PUCCH) resource information. The RRC configuration messages sent to the user equipment include the same report period, the same report time shift, and the same PUCCH resource information. The computing processor is further configured to make predictions based on the operating states of the user equipments, and when predicting that multiple conflicting user equipments in the user equipments will simultaneously execute channel status information reporting, determine one of the multiple conflicting user equipments The channel status information report will be executed, and the communication module will be driven to send a sleep command to other conflicting user devices other than the conflicting user device that can execute the channel status information report.

According to an embodiment of the present invention, a channel status report allocation method is disclosed, which includes: a base station sends radio resource control (RRC) configuration messages to multiple user equipments respectively, and the RRC configuration messages include periodic channel status information report parameters and discontinuous reception parameters Where periodic channel status information reporting parameters include reporting period, reporting time shift, and physical uplink control channel (PUCCH) resource information; when the base station predicts multiple conflicts in the user equipment based on the operating status of the user equipment When the user equipment will execute the channel status information report at the same time, the base station determines that one of the multiple conflicting user equipments will execute the channel status information report, and sends a sleep command to other conflicting user equipment other than the conflicting user equipment that can execute the channel status information report. . The RRC configuration messages sent to the user equipments include the same report period, the same report time shift, and the same PUCCH resource information.

According to an embodiment of the present invention, a base station capable of allocating channel status reports is disclosed, which includes a memory, a communication module, and a signal connection memory and a calculation process of the communication module Device. The arithmetic processor is configured to execute a scheduling algorithm to obtain a payback period, a payoff time shift, and a discontinuous reception cycle corresponding to each of the multiple user equipments, and a wake-up time shift corresponding to each user equipment , And corresponding to the wake-up duration of each user equipment, so that the wake-up period of each user equipment does not overlap with the channel return time; the arithmetic processor is further configured to drive the communication module to send radio resource control (RRC) configuration messages respectively To the user equipments, the RRC configuration message includes report period, report time shift, uplink control channel (PUCCH) resource information, and the discontinuous reception period corresponding to the user equipment receiving the RRC configuration message, The wake-up time displacement of the user equipment corresponding to receiving the RRC configuration message and the wake-up duration of the user equipment corresponding to receiving the RRC configuration message, and the RRC configuration messages transmitted to the user equipment have the same return period and the same Return time and the same PUCCH resource information.

According to an embodiment of the present invention, a channel status report allocation method is disclosed. The method includes: a base station executes a scheduling algorithm to obtain a report period, a report time shift, and a discontinuous reception period corresponding to each of multiple user equipments , The wake-up time displacement corresponding to each user equipment, and the wake-up duration corresponding to each user equipment, so that the wake-up period of each user equipment does not overlap with the channel return time; the base station transmits the radio resource control (RRC) configuration separately Messages to the user equipment, and the RRC configuration message includes the report period, report time shift, uplink control channel (PUCCH) resource information, and the discontinuous reception period corresponding to the user equipment receiving the RRC configuration message, corresponding to The wake-up time shift of the user equipment receiving the RRC configuration message and the wake-up duration corresponding to the user equipment receiving the RRC configuration message; wherein the RRC configuration messages sent to the user equipment have the same return period and the same Channel report time and information of the same PUCCH resource.

In summary, in the base station and the channel state report allocation method proposed by the present invention, the channel state report is mainly allocated when the expected channel state information report conflict occurs, and the base station side can detect the user equipment’s The amount of data in the current queue of the radio bearer, so as to schedule CSI reporting on different PUC resources on the same PUCCH resource. In addition, the status information reporting period and the discontinuous receiving period that are multiples of each other can be configured so that when a user equipment is determined to transmit data, the user equipment can report channel status information while the remaining users The device does not report channel status information. In this way, the base station and method for allocating channel status feedback provided by the present invention can improve the use efficiency of PUCCH, thereby reducing the overall demand for PUCCH resources.

The above description of the disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

eNB: base station

UE1~UE3: user equipment

STG1~STG7: Stage

DRX, DRX1~DRX2: discontinuous reception parameters

DRX_CE: Sleep instruction

DUP1, DUP2: during wake-up

TD1, TD2, TD: Wake up duration

TO: Sleep time

DTP: During data transmission

C1~C2: Payback period

P1, P1’, P2, P2’: discontinuous reception cycle

T1, T2: time period

t1, t2: status information return time

R1~R9: Range

SD1, SD2: Wake time displacement

SD: first displacement time

SC: second displacement time

PD1: The beginning of the first discontinuous reception cycle

PD2: The beginning of the second discontinuous reception cycle

PC: status information return cycle

CSI1~CSI5: physical uplink control channel resources

ON: active state

OFF: Inactive

S201, S203, S205: steps

S301, S303, S305, S307: steps

S401, S403: steps

FIG. 1A is a schematic diagram of a long-range evolution network according to an embodiment of the invention.

FIG. 1B is a schematic diagram of operations of a base station and user equipment according to an embodiment of the invention.

FIG. 2A is a waveform diagram of a preliminary setting of a user equipment according to an embodiment of the invention.

FIG. 2B is an actual operation waveform diagram of the user equipment according to an embodiment of the invention.

FIG. 3 is an operation waveform diagram of user equipment according to an embodiment of the invention.

FIG. 4A is a method flowchart of a channel state report allocation method according to an embodiment of the invention.

FIG. 4B is a method flowchart of a channel status report allocation method according to another embodiment of the invention.

FIG. 5A is a waveform diagram of a preliminary setting of a user equipment according to another embodiment of the invention.

FIG. 5B is an actual operation waveform diagram of the user equipment according to another embodiment of the invention.

FIG. 6 is a method flowchart of a channel state report allocation method according to another embodiment of the invention.

7 is an operation waveform diagram according to an embodiment of the invention.

8A-8B are operation waveform diagrams respectively shown according to different embodiments of the present invention.

9A-9B are operation waveform diagrams respectively shown according to different embodiments of the present invention.

10A-10B are operation waveform diagrams respectively shown according to different embodiments of the present invention.

The following describes in detail the detailed features and advantages of the present invention in the embodiments. The content is sufficient for any person skilled in the relevant art to understand and implement the technical content of the present invention, and according to the contents disclosed in this specification, the scope of patent application and the drawings Anyone skilled in the relevant art can easily understand the purpose and advantages of the present invention. The following examples further illustrate the views of the present invention in detail, but do not limit the scope of the present invention in any way.

In order to avoid the physical uplink control channel (PUCCH) resources occupying too much of the overall system bandwidth due to the increase in the number of user equipments, the concept proposed by the present invention enables multiple user equipments in the same group to share the same number Physical uplink control channel (PUCCH) resources are used to report channel status information to reduce the overall bandwidth of the system. Since sharing channel resources among multiple user equipments may result in reporting conflicts, the channel state reporting allocation method and base station proposed by the present invention can dynamically allocate PUCCH resources to the required user equipment according to the data transmission situation of each user equipment. To avoid reporting conflicts.

First, please refer to FIGS. 1A and 1B and FIGS. 2A and 2B together. FIG. 1A is a long-range evolution network architecture diagram according to an embodiment of the present invention, and FIG. 1B is a diagram according to an embodiment of the present invention. 2A is a schematic diagram of the initial setting waveform of the user equipment according to an embodiment of the present invention, and FIG. 2B is the actual diagram of the user equipment according to an embodiment of the present invention. Operating waveforms. As shown in FIGS. 1A and 1B, the long-range evolution network 1 includes a base station eNB and a first user equipment UE1 and a second user equipment UE2. The base station eNB is applicable and communicates with the first user equipment UE1 and the second user equipment UE2. The base station eNB has a memory 10, a communication module 11, and an arithmetic processor 12. The arithmetic processor 12 can be used to control the radio resource control (RRC) layer and the media access control (MAC) layer (not shown) of the base station eNB, wherein the base station eNB further has a scheduler (not shown) set on the media Access Control (MAC) layer. The arithmetic processor 12 of the base station eNB generates an RRC configuration message through a radio resource control (RRC) layer. The RRC configuration message can be stored in the memory 10 and the arithmetic processor 12 can send the RRC configuration message by driving the communication module 11 To user equipment UE1 and UE2. The RRC configuration message includes periodic channel status information reporting parameters and discontinuous reception parameters. The periodic channel status information reporting parameters include the reporting period, reporting time shift and PUCCH resource information, and the discontinuous receiving parameters include discontinuous receiving period, wake-up time shift and wake-up duration (On-duration).

Specifically, in stages STG1 to STG2 of FIG. 1B, the arithmetic processor 12 of the base station eNB transmits signaling RF1, RF2 and received signaling RFC1, RFC2 through the radio resource control (RRC) layer, and then completes the first user equipment The settings of the discontinuous reception parameters DRX1 and DRX2 of the UE1 and the second user equipment UE2 and the setting of the periodic channel state information report parameter CSI of the first user equipment UE1 and the second user equipment UE2. Among them, as shown in the initial setting waveform diagram of FIG. 2A, the discontinuous reception parameter DRX1 includes the discontinuous reception period P1, the wake-up time shift SD1 and the wake-up duration TD1, and the discontinuous reception parameter DRX2 includes the discontinuous reception period P2 and the wake-up time Displace SD2 and wake up duration TD2. The wake-up duration and sleep time will be repeated in a periodic manner to form a discontinuous reception (Discontinuous Reception) power saving mechanism. In this embodiment, the first user equipment UE1 and the second user equipment UE2 are configured with the same reporting period (eg C1), reporting time shift (eg SC) and PUCCH resources (eg CSI1).

The arithmetic processor 12 of the base station eNB controls the scheduler connected to the radio resource control layer RRC to track the respective operating states of the first user equipment UE1 and the second user equipment UE2. In detail, the computing processor 12 can drive the scheduler to track the first user equipment UE1 Active state and inactive state with the second user equipment UE2. In practice, the Active state means that the first user equipment UE1 and the second user equipment UE2 are in a state where data can be received, which is the aforementioned wake-up duration. On the contrary, the inactive state means that the first user equipment UE1 and the second user equipment UE2 are in a state of not receiving data, which is the aforementioned sleep time. The distribution of the active and inactive states included in the operating state of the first user equipment UE1 is determined by the discontinuous reception period P1, the wake-up time shift SD1 and the wake-up duration TD1, and the operating state of the second user equipment UE2 includes The distribution of active and inactive states is determined by the discontinuous reception period P2, wake-up time shift SD2 and wake-up duration TD2.

In this embodiment, the arithmetic processor 12 makes predictions based on the operating states of the first and second user equipments UE1 and UE2, and when it is predicted that the first and second user equipments UE1 and UE2 will perform channel status information reporting at the same time, The arithmetic processor 12 determines that one of the first and second user equipments UE1 and UE2 will perform channel status information reporting. Then, the arithmetic processor 12 drives the communication module 11 to send a sleep command to the other of the first and second user equipment UE1, UE2. In other words, the first and second user equipments UE1 and UE2 are conflicting user equipments, and the computing processor 12 determines that one of the two conflicting user equipments (such as the first user equipment UE1) uses the PUCCH resource CSI1 to report channel status information . On the other hand, the arithmetic processor 12 uses the sleep instruction to put another conflicting user equipment (for example, the second user equipment UE2) into the sleep state.

More specifically, the arithmetic processor 12 uses the scheduler to predict whether the expected channel state information report conflict will occur according to the operating state of the first user equipment UE1 and the second user equipment UE2 at the state information report time t1. The state information reporting time t1 is determined by the reporting period C1 and the reporting time shift SC. In detail, in practice, the user equipment in the active state uses physical uplink control channel (PUCCH) resources to perform channel status information (CSI) reporting. However, according to the foregoing, since the first and second user equipments UE1 and UE2 use the same physical uplink control channel number (eg Index 0) and share the same Physical uplink control channel resources, so only one of the user equipments can use this physical uplink control channel resource to report channel status information at the same time. In the embodiment of FIG. 2B, when reporting channel status information (ie, "status information reporting time t1") is executed at a certain point in time, if both the first and second user equipments UE1 and UE2 are in the Active state, That is, it is predicted that the first and second user equipments UE1 and UE2 will execute the channel state information report at the same time, then the arithmetic processor 12 will determine that the expected channel state information report conflict will occur.

According to the above, when it is predicted that this expected channel state information report conflict will occur, the computing processor 12 of the base station eNB detects the data transmission state of the first user equipment UE1 and the second user equipment UE2, and then sends a sleep command DRX_CE to terminate the first Wake up duration of one of the user equipment UE1 and the second user equipment UE2. The sleep command DRX_CE is a DRX Command of MAC CONTROL ELEMENT (DRX CE).

In an embodiment, when the arithmetic processor 12 of the base station eNB determines that one of the first user equipment UE1 and the second user equipment UE2 perform data transmission, the arithmetic processor 12 sends a sleep command DRX_CE through the driving communication module 11 to make the first The other of the user equipment UE1 and the second user equipment UE2 enters the inactive state in the operating state and stops performing channel state information reporting. Specifically, when both the first user equipment UE1 and the second user equipment UE2 are in the Active state during the status information reporting time t1, the computing processor 12 of the base station eNB will detect and judge the first user equipment UE1 and the first Which one of the two user equipments UE2 needs to perform data transmission, further sends a sleep command DRX_CE to the user equipment that does not perform data transmission by driving the communication module 11 to terminate its wake-up duration and stop executing channel status information return. The sleep command DRX_CE is a DRX Command of MAC CONTROL ELEMENT (DRX CE).

In the embodiment of FIG. 2B, when it is determined that the expected channel status information reporting conflict will occur at the status information reporting time t1, if the computing processor 12 of the base station eNB determines that the first user equipment UE1 performs data transmission, the computing processor 12 Send the sleep command DRX_CE The second user equipment UE2 is given to terminate its wake-up duration TD2, as shown in stage STG3 of FIG. 1B and FIG. 2B. That is, the second user equipment UE2 will be forced to enter the sleep time by the current wake-up duration TD2 according to the sleep command DRX_CE, and stop executing the channel status information report. In other words, the second user equipment UE2 will go from the active state to the inactive state. At this time, the physical uplink control channel resource CSI1 can be used by the first user equipment UE1 to perform channel status information reporting, as shown in FIG. 1B The stage STG4 is shown. The sleep command DRX_CE is a discontinuous reception command media access control layer control unit (DRX Command of MAC CONTROL ELEMENT, DRX CE), and thereby, channel status information return of the first user equipment UE1 and the second user equipment UE2 can be avoided Of collision.

Please further refer to FIG. 3, which is an operation waveform diagram of the user equipment according to an embodiment of the invention. FIG. 3 illustrates the information transmission status of the first user equipment UE1, the second user equipment UE2, and the third user equipment UE3. It can be seen from FIG. 3 that when the arithmetic processor 12 of the base station eNB decides to enable the first user equipment UE1 to perform data transmission in the first time period T1, the remaining second user equipment UE2 and third user equipment UE3 will The sleep state will be entered according to the sleep command DRX_CE from the arithmetic processor 12 (for example, the inactive state of FIG. 2B is OFF). In this case, the physical uplink control channel resources CSI1~CSI3 can be provided to the first user equipment UE1 to perform channel status information reporting.

When the arithmetic processor 12 of the base station eNB decides to enable the second user equipment UE2 to perform data transmission in the second period T2, the remaining first user equipment UE1 and the third user equipment UE3 will be based on the data from the arithmetic processor 12 The sleep command DRX_CE enters the sleep state (for example, the inactive state of FIG. 2B is OFF). In this case, the physical uplink control channel resources CSI4~CSI5 can be provided to the second user equipment UE2 to perform channel status information reporting. The sleep command DRX_CE is a DRX Command of MAC CONTROL ELEMENT (DRX CE).

In other words, the first user equipment UE1, the second user equipment UE2, and the third user equipment UE3 share the same physical uplink control channel resource, that is, the three users The device uses the same physical uplink control channel number. In practical operation, one physical uplink control channel resource cannot be used by multiple user equipments at the same time. Therefore, the base station eNB proposed by the present invention can determine which users to allow based on the data transmission status of these user equipments The device enters the dormant state, based on which the physical uplink control channel resources can be provided to the user equipment in need of data transmission. In this way, the physical uplink control channel resources can reduce the overall bandwidth of the system.

In an embodiment, when the computing processor 12 of the base station eNB decides to transmit data to the second user equipment UE2 and the second user equipment UE2 enters the active state from the inactive state in the operating state, the second user equipment UE2 uses The physical uplink control channel resource corresponding to the physical uplink control channel number performs channel status information reporting. Specifically, following the embodiment of FIG. 1B described above, in stage STG5, after the first user equipment UE1 completes the data transmission, the arithmetic processor 12 of the base station eNB uses the sleep command DRX_CE to make the first user equipment UE1 enter an inactive state . When it is determined that the second user equipment UE2 performs data transmission, the arithmetic processor 12 of the base station eNB will wait until the second user equipment UE2 enters an active state, and continues to send messages to the second user equipment UE2. At this time, the second user equipment UE2 may use the physical uplink control channel resource (Index 0) to perform channel status information reporting, as shown in stage STG6 of FIG. 1B. Since the first user equipment UE1 has entered an inactive state at this time, the second user equipment UE2 uses this number of resources for reporting and will not cause a conflict. Next, as shown in stage STG7 of FIG. 1B, after the second user equipment UE2 completes the data transmission, the arithmetic processor 12 of the base station eNB uses the sleep command DRX_CE to make the second user equipment UE2 enter an inactive state. The sleep command DRX_CE is a DRX Command of MAC CONTROL ELEMENT (DRX CE).

Please refer to FIG. 4A. FIG. 4A is a method flowchart of a channel status report allocation method according to an embodiment of the present invention. This channel status report allocation method is applicable to multiple user equipments, such as the aforementioned first user equipment UE1 and second user equipment UE2. As shown in FIG. 4A, in step S201, the operation processor 11 of the base station eNB controls the radio resource control The (RRC) layer separately sends RRC configuration messages to multiple user equipments. The RRC configuration messages include periodic channel status information reporting parameters and discontinuous reception parameters. The periodic channel status information reporting parameters include reporting period, reporting time shift and PUCCH resource information, and the discontinuous receiving parameters include discontinuous receiving period, wake-up time shift and wake-up duration.

In this embodiment, the operating state is determined by the discontinuous reception period, the wake-up time shift, and the wake-up duration, and the state information return time is determined by the return cycle and the return time shift. In this embodiment, the user equipments are configured with the same report period and the same PUCCH resource according to the RRC configuration message.

In step S203, when the computing processor 11 of the base station eNB predicts that multiple conflicting user equipments in the user equipments will simultaneously perform channel status information reporting based on the operating states of the user equipments, the base station eNB determines the multiple conflicts One of the user equipments will perform channel status information reporting. In step S205, the base station eNB sends a sleep command to other conflicting user equipments other than the conflicting user equipments that can report the channel status information.

Please refer to FIG. 4B. FIG. 4B is a method flowchart of a channel state report allocation method according to another embodiment of the present invention. The steps in FIG. 4B and FIG. 4A are substantially the same, the difference between the two is that FIG. 4B further includes step S307. In step S307, the other user conflicting device enters an inactive state in the operating state according to the sleep command and stops using the PUCCH resource to perform channel status information reporting.

For example, if the base station eNB predicts that the first user equipment UE1 and the second user equipment UE2 will perform channel state information reporting at a state information reporting time according to the operating state, the base station eNB may use the first and second user equipment UE1, UE2 Data transmission status, and decided to let the first user equipment UE1 use this PUCCH resource to perform channel status information reporting, and on the other hand send a sleep command to the second user equipment UE2 to interrupt the wake-up duration and enter an inactive state, Avoid using the same PUCCH resources as the first user equipment UE1 to cause resource conflicts.

The aforementioned embodiment mainly uses the sleep command issued by the base station eNB to force Put the user equipment that is not in data transmission into a sleep state to dynamically allocate physical uplink control channel resources to the user device to periodically report channel status information, so as to improve the utilization efficiency of physical uplink control channel resources and Furthermore, the overall demand for physical uplink control channel resources is reduced. In another embodiment, the above purpose can be achieved by configuring a discontinuous reception period and a status information return period with a specific period length relationship.

In detail, please refer to FIG. 1, FIG. 5A and FIG. 5B together. FIG. 5A is a waveform diagram of a preliminary setting of a user equipment according to another embodiment of the present invention, and FIG. 5B is another diagram according to the present invention. The actual operation waveform diagram of the user equipment shown in the embodiment. In this embodiment, as shown in FIG. 1, the base station eNB also has a memory 10, a communication module 11, and an arithmetic processor 12 for connecting the memory 10 and the communication module 11. The arithmetic processor 12 executes a scheduling algorithm to obtain a payback period, a payback time shift, and a discontinuous reception cycle corresponding to each user equipment, a wake-up time shift respectively corresponding to each user equipment, and a shift corresponding to each The wake-up duration of each user equipment, so that the wake-up period of each user equipment does not overlap with the channel return time. Further, the computing processor 12 drives the communication module 11 to send an RRC configuration message to the user equipments respectively. The RRC configuration message includes the aforementioned report period and report time shift, and uplink control channel (PUCCH) resources Information. The RRC configuration message further includes a discontinuous reception period corresponding to each user equipment, a wake-up time displacement corresponding to each user equipment, and a wake-up duration corresponding to each user equipment. In this embodiment, the RRC configuration messages sent to the user equipments have the same report period, the same report time shift, and the same PUCCH resource information.

For example, as shown in the initial setting waveform diagram of FIG. 5A, the arithmetic processor 12 obtains the status information report period C2, report time shift SC, corresponding to the first user equipment UE and the second user equipment UE2 by executing a scheduling algorithm Discontinuous reception periods P1' and P2', wake-up time shifts SD1, SD2, and wake-up durations TD1 and TD2. The arithmetic processor 12 sends an RRC configuration message to the first user equipment UE1 and the second user equipment UE2 through the communication module 11 respectively. The RRC configuration message includes status information reporting period C2, reporting time shift Information on SC and PUCCH resources. The RRC configuration message further includes discontinuous reception periods P1' and P2' corresponding to the first user equipment UE1 and the second user equipment UE2, and the wake-up time displacement and data transmission corresponding to the first user equipment UE1 and the second user equipment UE2. Duration (eg DTP of Figure 5B). In this embodiment, the discontinuous reception periods P1' and P2' are twice the state information return period C2. The multiples described here are only examples, and the invention is not limited thereto. In this embodiment, the first and second user equipments UE1 and UE2 are configured with the same payback period C2, the same payback time (for example, t2), and the same PUCCH resource CSI2.

The arithmetic processor 12 of the base station eNB may be used to determine that one of the first user equipment and the second user equipment performs data transmission within the data transmission duration DTP. When the status information reporting time of the user equipment performing the data transmission is within the data transmission duration DTP, the user equipment performing the data transmission executes the channel status information reporting, and the user equipment other than the user equipment performing the data transmission does not execute the channel status information. Return. The data transmission duration DTP is related to the wake-up duration. The wake-up durations TD1 and TD2 can be used to determine the wake-up periods DUP1 and DUP2 of the first and second user equipments UE1 and UE2. The wake-up periods DUP1, DUP2 and the status information reporting time (such as t2) are staggered (ie, do not overlap ).

Based on the actual operation waveform diagram of FIG. 5B, it is assumed that the computing processor 12 of the base station eNB determines that the first user equipment UE1 performs data transmission within the data transmission duration DTP, and the status information reporting time t2 is within the data transmission duration DTP Then, the first user equipment UE1 uses physical uplink control channel resources to perform channel status information reporting CSI1. In this case, the second user equipment UE2 does not perform channel status information reporting. The state information report time t2 is determined by the report period C2 and the report time shift SC, and the data transmission duration DTP is associated with the discontinuous reception period P1', the wake-up time shift SD1, and the wake-up duration TD1. In an actual operation example, as shown in FIGS. 5A and 5B, the arithmetic processor 12 is used to extend the wake-up duration TD1 by a period EP to generate the data transmission duration DTP. That is to say, when the first user equipment UE1 performs data transmission during the wake-up duration TD1, since the wake-up duration TD1 is insufficient, the arithmetic processor 12 may call The wake-up duration TD1 is extended by a period EP so that the first user equipment UE1 can continue to transmit data until the transmission is completed.

The base station proposed by the present invention appropriately configures the discontinuous reception period and the status information reporting period so that the wake-up period and the status information reporting time are staggered (that is, do not overlap), thereby enabling the user equipment for data transmission to use the physical uplink Control channel resources to perform channel status information reporting. Conversely, user equipment that does not perform data transmission does not perform channel status information reporting.

Please refer to FIG. 6. FIG. 6 is a flowchart of a method for channel status report allocation according to another embodiment of the present invention. As shown in FIG. 6, in step S401, the base station executes a scheduling algorithm to obtain a payback period, a payoff time shift, and a discontinuous reception period corresponding to each user equipment in multiple user equipments, corresponding to each user The wake-up time shift of the device, and the wake-up duration corresponding to each user device, so that the wake-up period of each user device does not overlap with the channel return time.

In step S403, the base station separately transmits radio resource control (RRC) configuration messages to the user equipments, and the RRC configuration messages include report period, report time shift, uplink control channel (PUCCH) resource information, and the corresponding The discontinuous reception period of each user equipment, the wake-up time displacement corresponding to each user equipment, and the wake-up duration corresponding to each user equipment. The RRC configuration messages sent to the user equipments have the same report period, the same report time shift, and the same PUCCH resource information. In one embodiment, one of the reporting period C2 and the discontinuous receiving period is N of the other, and N is a positive integer, but the invention is not limited thereto. The details of the process steps in FIG. 6 have been described in detail above, so they will not be repeated here.

或

In one embodiment, the wake-up time shift has the first shift time SD, and the report time shift has the second shift time SC, where the relationship (1) or (2) can be established as follows:

or

Among them, PD1 is the starting point of the first discontinuous receiving cycle, PD2 is the starting point of the second discontinuous receiving cycle adjacent to the starting point of the first discontinuous receiving cycle, PC is the status information return cycle, and SD is For the first displacement time, SC is the second displacement time, TD is the wake-up duration, and n is a non-negative integer. When these parameters are brought in and the above relationship is established, it can ensure that the channel status information report will be in the sleep state without overlapping with the wake-up period.

In more detail, the above relationship (1) can be converted into another relationship (3): PD1+SD+TD<nPC+SC<PD2+SD, or relationship (2) can be converted into another relationship (4): nPC+SC<SD. According to the relationship (3) and (4) after the conversion, the channel status information report CSI is in the range between PD1+SD+TD and PD2+SD or less than the range of SD. , You can ensure that the channel status information report will be in the sleep time TO and will not overlap with the wake-up period. The above concept will be described below with practical examples.

Please refer to FIG. 7, which is an operation waveform diagram according to an embodiment of the present invention. Specifically, FIG. 7 is a waveform diagram showing the discontinuous reception parameter DRX and the channel status information report parameter CSI. The discontinuous reception parameter DRX includes two wake-up durations TD and a sleep time TO in between. Specifically, in order for the channel state information to report that CSI is in the sleep time TO, it can be configured such that nPC+SC is greater than PD1+SD+TD and less than PD2+SD, where nPC described herein is the nth channel state information The starting point of return. The method proposed by the present invention is to configure the above parameters to conform to the relationship (1) or (2), so that the time for the channel status information to report CSI can be located in the sleep time TO, but not during the wake-up period overlapping.

SD<PD；當第一位移時間與喚醒持續時間的總合小於狀態資訊回報週期時，配置第二位移時 間SC，以符合0

SC<SD或SD+TD

SC<PC；當第一位移時間SD與喚醒持續時間的總合大於或等於狀態資訊回報週期時，設置第二位移時間SC，以符合關係式mod(SD+TD,PC)

SC<SD。以下將針對非連續接收週期與狀態資訊回報週期相同的實際例子進行說明。 In one embodiment, the method proposed by the present invention further includes the following steps: when the discontinuous reception period and the status information return period are the same, the wake-up duration TD is determined according to the load of data transmission; the first displacement time SD is configured to meet Relation 0

SD<PD ; when the sum of the first displacement time and the wake-up duration is less than the status information return period, configure the second displacement time SC to meet 0

SC<SD or SD+TD

SC<PC ; when the sum of the first displacement time SD and the wake-up duration is greater than or equal to the status information reporting period, the second displacement time SC is set to comply with the relationship mod( SD+TD, PC )

SC<SD . In the following, a practical example in which the discontinuous reception period is the same as the status information return period will be described.

SC<SD的範圍R1當中，亦或是位於SD+TD

SC<PC的範圍R2當中，如此即可位在休眠狀態而不會與喚醒期間重疊。圖8B示出當第一位移時間SD與喚醒持續時間TD的總合大於或等於狀態資訊回報週期PC的實施例。如圖8B所示，通道狀態資訊回報CSI可允許的回報時間，即對應第二位移時間SC，主要係位於mod(SD+TD,PC)

SC<SD的範圍R3當中，即可位在休眠狀態而不會與喚醒期間重疊。 Please refer to FIGS. 8A-8B together. FIGS. 8A-8B are operation waveform diagrams respectively shown according to different embodiments of the present invention. FIG. 8A shows an embodiment when the sum of the first displacement time SD and the wake-up duration TD is less than the status information reporting period PC. As shown in FIG. 8A, the allowable return time of the channel status information reporting CSI, which corresponds to the SC second displacement time, can be located at 0

In the range R1 of SC<SD , it may also be in SD+TD

In the range R2 of SC<PC , it can stay in the sleep state without overlapping with the wake-up period. FIG. 8B shows an embodiment when the sum of the first displacement time SD and the wake-up duration TD is greater than or equal to the status information reporting period PC. As shown in FIG. 8B, the allowable return time of the channel status information reporting CSI, which corresponds to the second displacement time SC, is mainly located in mod( SD+TD, PC )

In the range R3 of SC<SD , it can be in the sleep state without overlapping with the wake-up period.

SD<PD；當mod(SD,PC)<mod(SD+TD,PC)時，配置第二位移時間SC，以符合0

SC<mod(SD,PC)或mod(SD+TD,PC)

SC<PC；當mod(SD,PC)

mod(SD+TD,PC)時，配置第二位移時間SC，以符合mod(SD+TD,PC)

SC<mod(SD,PC)。以下將針對非連續接收週期係為狀態資訊回報週期的兩倍(k=2)的實際例子進行說明。 In one embodiment, the method proposed by the present invention further includes when the discontinuous reception period is k times the state information return period, the wake-up duration is determined according to the load of the data transmission and the configuration is such that the wake-up duration is less than the state information return period , Where k is a positive integer; the first displacement time is configured to conform to 0

SD<PD ; when mod( SD,PC )<mod( SD+TD,PC ), configure the second displacement time SC to meet 0

SC <mod( SD, PC ) or mod( SD+TD, PC )

SC<PC ; when mod( SD, PC )

When mod( SD+TD,PC ), configure the second displacement time SC to meet mod( SD+TD,PC )

SC <mod( SD,PC ). The following will describe a practical example in which the discontinuous reception period is twice the state information return period (k=2).

SC<mod(SD,PC)的範圍R4或是mod(SD+TD,PC)

SC<PC的範圍R5當中，如此可使通道狀態資訊回報CSI的回報時間位於休眠狀態當中。圖9B示出mod(SD,PC)

mod(SD+TD,PC)的實施例。如圖9B所示，為了使通道狀態資訊回報CSI可允許的回報時間，即第二位移時間SC，不會與喚醒期間重疊，可選擇將第二位移時間SC配置位於mod(SD+TD,PC)

SC<mod(SD,PC)的範圍R6中，如此可使通道狀態資訊回報CSI的回報時間位於休眠狀態當中。 Please refer to FIGS. 9A-9B together. FIGS. 9A-9B are operation waveform diagrams respectively shown according to different embodiments of the present invention. FIG. 9A shows an embodiment of mod( SD, PC )<mod( SD+TD, PC ). As shown in FIG. 9A, in order to allow the channel state information to report the allowable return time of CSI, that is, corresponding to the second displacement time SC, which does not overlap with the wake-up period, the second displacement time SC can be configured to be at 0

SC <mod( SD, PC ) Range R4 or mod( SD+TD, PC )

In the range R5 of SC<PC , in this way, the channel status information reporting CSI reporting time is in the dormant state. Figure 9B shows mod( SD, PC )

Mod ( SD+TD, PC ) embodiment. As shown in FIG. 9B, in order to allow the channel status information to report the allowable return time of CSI, that is, the second displacement time SC, does not overlap with the wake-up period, the second displacement time SC can be configured to be located at mod( SD+TD, PC )

In the range R6 of SC <mod ( SD, PC ), the channel status information can be reported to the CSI in the sleep state.

SC<mPD+SD或mPD+SD+TD<SC<(m+1)PD；當第一位移時間與喚醒持續時間的總合大於或等於非連續接收週期時，設置第二位移時間，以符合mPD+mod(SD+TD,PD)<SC<mPD+SD；其中，k為正整數，且m為小於k的正整數。以下將以針對非連續接收週期係為狀態資訊回報週期的兩倍(k=2)的實際例子進行說明。 In one embodiment, the method proposed by the present invention further includes: when the state information reporting period is k times the discontinuous receiving period, the wake-up duration is determined according to the load of data transmission and the configuration is such that the wake-up duration is less than the state information reporting Period; configure the first displacement time so that the first displacement time is greater than or equal to 0 and less than the discontinuous reception period; when the sum of the first displacement time and the wake-up duration is less than the discontinuous reception period, configure the second displacement time to meet the PD

SC<mPD+SD or mPD+SD+TD<SC <( m +1) PD ; when the sum of the first displacement time and the wake-up duration is greater than or equal to the discontinuous reception period, set the second displacement time to meet mPD +mod( SD+TD,PD )<SC<mPD+SD; where k is a positive integer and m is a positive integer less than k. In the following, a practical example will be described in which the discontinuous reception cycle is twice the state information return cycle (k=2).

SC<mPD+SD的範圍R7中，或是位於mPD+SD+TD<SC<(m+1)PD的範圍R8中，其中m=0,1。圖10B示出第一位移時間與喚醒持續時間的總合大於或等於非連續接收週期。如圖10B所示，為了使通道狀態資訊回報CSI可允許的回報時間，即 第二位移時間SC，不會與喚醒期間重疊，可選擇將第二位移時間SC配置符合mPD+mod(SD+TD,PD)<SC<mPD+SD的範圍R9中，其中m=0,1。 Please refer to FIGS. 10A-10B together. FIGS. 10A-10B are operation waveform diagrams respectively shown according to different embodiments of the present invention. FIG. 10A shows an embodiment where the sum of the first displacement time and the wake-up duration is less than the discontinuous reception period. As shown in FIG. 10A, in order to allow the channel state information to report the allowable return time of CSI, that is, corresponding to the second displacement time SC, which does not overlap with the wake-up period, the second displacement time SC can be configured to be located in mPD

SC<mPD+SD range R7, or mPD+SD+TD<SC <( m +1) PD range R8, where m=0,1. FIG. 10B shows that the sum of the first displacement time and the wake-up duration is greater than or equal to the discontinuous reception period. As shown in FIG. 10B, in order to allow the channel status information to report the allowable return time of CSI, that is, the second displacement time SC, does not overlap with the wake-up period, the second displacement time SC can be configured to conform to mPD +mod( SD+TD ,PD )<SC<mPD+SD in the range R9, where m=0,1.

In summary, in the base station and the channel state report allocation method proposed by the present invention, the channel state report is mainly allocated when the expected channel state information report conflict occurs, and the base station side can detect the user equipment’s The amount of data in the current queue of the radio bearer, so as to dynamically allocate PUCCH resources to the user equipment for periodic CSI return. In addition, by appropriately configuring the status information reporting period and discontinuous receiving period, when a user equipment decides to transmit data, the user equipment can report channel status information, while the remaining user equipment can Channel status information is not reported. In this way, the base station and method for allocating channel status feedback provided by the present invention can improve the utilization efficiency of uplink control channel resources, thereby reducing the overall demand for uplink control channel resource resources.

Although the present invention is disclosed as the foregoing embodiments, it is not intended to limit the present invention. Without departing from the spirit and scope of the present invention, all modifications and retouching are within the scope of patent protection of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

S201, S203, S205: steps

Claims (19)

A base station capable of allocating channel status reports includes a memory, a communication module, and an arithmetic processor that signals the memory and the communication module, and the arithmetic processor is configured to execute: drive the communication module The group sends a radio resource control (Radio resource control, RRC) configuration message to multiple user equipments respectively, wherein the RRC configuration message includes a periodic channel status information reporting parameter and a discontinuous reception parameter, and the periodic channel status information The report parameter includes a report period, a report time shift, and information of a physical uplink control channel (Physical Uplink Control Channel, PUCCH) resource, where the RRC configuration message sent to the user equipment includes the same report period , The same reporting time shift and the same PUCCH resource information; and predicting based on the operating status of the user equipments, and predicting that multiple conflicting user equipments in the user equipments will simultaneously perform channel status information reporting , Determine that one of the multiple conflicting user equipments will execute channel status information reporting, and drive the communication module to send a sleep command to other conflicting user equipments other than the conflicting user equipment that can perform channel status information reporting. The base station capable of allocating channel status reporting according to claim 1, wherein the arithmetic processor determines the conflicting user equipment that will perform channel status information reporting according to the data transmission status of the multiple conflicting user equipments. The base station capable of allocating channel status reporting as described in claim 1, wherein the arithmetic processor is based on the distribution of the active status and inactive status of the user equipments to predict that the conflicting user equipments will simultaneously perform channel status information reporting . The base station capable of allocating channel status report as described in claim 1, wherein the sleep command sent by the computing processor to drive the communication module is a discontinuous reception command media access control layer control unit (DRX Command of MAC CONTROL ELEMENT, DRX CE). A channel status report allocation method includes: a base station sends a radio resource control (RRC) configuration message to a plurality of user equipments, the RRC configuration message includes a periodic channel status information report parameter and a discontinuous reception parameter, wherein the period The channel status information reporting parameters include a reporting period, a reporting time shift, and physical uplink control channel (PUCCH) resource information; and when the base station predicts the number of user equipment based on the operating status of the user equipment When two conflicting user equipments will simultaneously execute channel status information reporting, the base station determines that one of the multiple conflicting user equipments will execute channel status information reporting, and sends a sleep command to the other than the conflicting user equipment that can perform channel status information reporting. Other conflicting user equipments; wherein, the RRC configuration messages sent to the user equipments include the same reporting period, the same reporting time shift, and the same PUCCH resource information. The channel status report allocation method of claim 5, wherein the sleep command is used to make the other conflicting user equipment enter an inactive state and stop using the PUCCH resource to perform channel status information report. The channel status report allocation method as described in claim 5, wherein the base station determines that one of the multiple conflicting user equipments will execute the channel status information report includes the base station deciding to execute the channel based on the data transmission status of the multiple conflicting user equipments The conflicting user equipment reported by the status information. The channel state report allocation method according to claim 5, wherein the base station predicts that the conflicting user equipments will simultaneously execute the channel state information report based on the distribution of the active state and the inactive state of the user equipments. The channel status report allocation method according to claim 5, wherein the sleep command sent by the base station is a DRX Command of MAC CONTROL ELEMENT (DRX CE). A base station capable of allocating channel status report includes a memory, a communication module, and an arithmetic processor whose signal is connected to the memory and the communication module, and the arithmetic processor is configured to execute: execute a schedule An algorithm to obtain a reward period, a reward time shift, and a discontinuous reception period corresponding to each of the multiple user equipments, a wake-up time shift corresponding to each of the user equipments, and corresponding to A wake-up duration of each user equipment so that a wake-up period of each user equipment does not overlap with a channel report time; and the communication module is driven to send a radio resource control (RRC) configuration message to the User equipment, wherein the RRC configuration message includes the report period, the report time shift, information of an uplink control channel (PUCCH) resource, and the discontinuous reception period corresponding to the user equipment receiving the RRC configuration message, A wake-up time shift corresponding to the user equipment receiving the RRC configuration message and a wake-up duration corresponding to the user equipment receiving the RRC configuration message, and the RRC configuration messages transmitted to the user equipment have the same return The period, the same return time shift and the same information of the PUCCH resource. The base station capable of allocating a channel status report according to claim 10, wherein one of the report period and the discontinuous reception period is N times the other, and N is a positive integer. The base station capable of allocating a channel status report as described in claim 10, wherein the arithmetic processor is further configured to extend the wake-up duration to generate a data transmission duration. A channel status report allocation method includes: a base station executes a scheduling algorithm to obtain a report period, a report time shift, and a discontinuous reception period corresponding to each of the user equipment in a plurality of user equipment, corresponding to A wake-up time shift for each of the user equipment and a wake-up duration corresponding to each of the user equipment, so that a wake-up period of each user equipment does not overlap with a channel return time; and the base station transmits separately A Radio Resource Control (RRC) configuration message to the user equipments, and the RRC configuration message includes the report period, the report time shift, information of an uplink control channel (PUCCH) resource, and corresponds to receiving the RRC configuration The discontinuous reception period of the user equipment of the message, the wake-up time displacement of the user equipment corresponding to receiving the RRC configuration message and the wake-up duration of the user equipment corresponding to receiving the RRC configuration message; wherein, transmitted to the The RRC configuration messages of some user equipments have the same report period, the same report time shift, and the same PUCCH resource information. The channel status report allocation method according to claim 13, wherein one of the report period and the discontinuous reception period is N times the other, and N is a positive integer. The channel status report allocation method as described in claim 13, further includes extending the wake-up duration by the computing processor to generate a data transmission duration. The channel state reward allocation method according to claim 13, wherein the wake-up time displacement includes a first displacement time, and the reward time displacement includes a second displacement time, wherein the established relationship is:

or

, PD1 is the beginning of a first discontinuous reception cycle, PD2 is the beginning of a second discontinuous reception cycle adjacent to the beginning of the first discontinuous reception cycle, PC is the return cycle, and SD is For the first displacement time, SC is the second displacement time, TD is the wake-up duration, and N is a non-negative integer. The channel status report allocation method according to claim 16, further comprising: when the discontinuous reception period is the same as the report period, determining the wake-up duration according to the load of data transmission; configuring the first displacement time to meet 0

SD<PD ; when the sum of the first displacement time and the wake-up duration is less than the reward period, configure the second displacement time to meet 0

SC<SD or SD+TD

SC<PC ; and when the sum of the first displacement time and the wake-up duration is greater than or equal to the reward period, configure the second displacement time to comply with mod( SD+TD, PC )

SC<SD . The channel status report allocation method according to claim 16, further comprising: when the discontinuous reception period is k times the report period, determining the wake-up duration according to the load of data transmission and configuring the wake-up duration to be less than the Return period, where k is a positive integer; configure the first displacement time to match 0

SD<PD ; when mod( SD,PC )<mod( SD+TD,PC ), configure the second displacement time to meet 0

SC <mod( SD, PC ) or mod( SD+TD, PC )

SC<PC ; and when mod( SD, PC )

When mod( SD+TD,PC ), configure the second displacement time to meet mod( SD+TD,PC )

SC <mod( SD,PC ). The channel status report allocation method according to claim 16, further comprising: when the report period is k times the discontinuous reception period, determining the wake-up duration according to the load of data transmission and configuring the wake-up duration to be less than the Return period; configure the first displacement time so that the first displacement time is greater than or equal to 0 and less than the discontinuous reception period; when the sum of the first displacement time and the wake-up duration is less than the discontinuous reception period, configure the The second displacement time to meet the mPD

SC<mPD+SD or mPD+SD+TD<SC <( m +1) PD ; and when the sum of the first displacement time and the wake-up duration is greater than or equal to the discontinuous reception period, configure the second displacement Time, in line with mPD +mod( SD+TD,PD )< SC <mPD+SD; where k is a positive integer and m is a non-negative integer less than k.

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