CN111385903A - Grouping method of user equipment - Google Patents

Abstract

A method for grouping user equipment includes configuring one or more codes for each user equipment by a base station, wherein each code corresponds to a delay upper limit. The base station performs a grouping task according to the delay upper limits and the channel demand judgment result corresponding to each user equipment, thereby forming one or more first type groups and one or more second type groups, wherein each first type group corresponds to a first group delay upper limit and each second type group corresponds to a second group delay upper limit. The base station selects user equipment in the first type groups and the second type groups according to the first group delay upper limits and the second group delay upper limits to form one or more target groups.

Description

Grouping method of user equipment

technical field

The present invention relates to a grouping method for user equipment.

Background technique

In the field of Long Term Evolution (LTE) networks, in order to improve spectrum usage efficiency and provide better service quality to the user, the network often requires the user to measure wireless channels and report back. The base station can allocate the relevant parameters of the user terminal equipment, so that the utilization efficiency of the channel resources can be improved.

Generally speaking, a base station is connected to multiple UEs, and the parameters of these UEs, such as delay tolerance, may be different. When there are a large number of UEs, the base station cannot easily adjust the parameters of these UEs due to differences in the characteristics of these parameters, so as to improve the utilization efficiency of channel resources.

SUMMARY OF THE INVENTION

The present invention proposes a method for grouping user equipment, which is mainly to group multiple user equipments, so that the user equipments in the same group have a corresponding upper limit of delay, so that the base station can separately target the user equipments in each group. parameters to adjust.

According to an embodiment of the present invention, a method for grouping user equipment is disclosed, which is suitable for a plurality of user equipments connected to a base station. The grouping method includes configuring one or more codes of each user equipment with the base station, wherein each code corresponds to A delay upper limit; the base station performs a grouping task according to the delay upper limit and the channel requirement judgment result corresponding to each user equipment, so as to form one or more first-type groups and one or more second-type groups , wherein each first type group corresponds to a first group delay upper limit and each second type group corresponds to a second group delay upper limit; the base station is based on the first group delay upper limit and the second group delay limit The group delay cap is selected by the user equipments in the first type group and the second type group to form one or more target groups.

To sum up, in the method for grouping user equipment proposed in the present invention, the base station firstly groups the user equipment according to the maximum delay upper limit and the minimum delay upper limit, and then according to the channel demand of the user equipment (traffic demand) And remove part of the user equipment from the corresponding type group. Next, user equipments within these types of groups with the same group delay cap are selected to form a target group. Finally, the sum of the normalized channel requirements of the target group is determined to decide whether to further divide the target group. In this way, a plurality of user equipments can be appropriately grouped into different groups, so that the base station can individually configure parameters for these user equipments in a single group, so as to improve the channel resource utilization efficiency of the user equipments in a single group .

The foregoing description of the present disclosure and the following description of the embodiments serve to demonstrate and explain the spirit and principles of the present invention, and to provide further explanation of the claims of the present invention.

Description of drawings

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

FIG. 2 is a method flowchart of a method for grouping user equipment according to an embodiment of the present invention.

FIG. 3 is a detailed method flowchart of a method for grouping user equipment according to another embodiment of the present invention.

FIG. 4 is a schematic diagram of preliminary grouping according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of grouping according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of target grouping according to an embodiment of the present invention.

FIG. 7A is a waveform diagram of a preliminary setting of a user equipment according to an embodiment of the present invention.

FIG. 7B is an actual operation waveform diagram of the user equipment according to an embodiment of the present invention.

FIG. 8A is a waveform diagram of a preliminary setting of a user equipment according to another embodiment of the present invention.

FIG. 8B is an actual operation waveform diagram of the user equipment according to another embodiment of the present invention.

Symbol Description

eNB base station

1 to 8 user equipment

Gm1～Gm3 initial first type group

Gl1～Gl3 initial second type group

Gm1’～Gm3’ The first type group

Gl1'～Gl3' The second type group

Gk1, Gk2 target group

DRX1, DRX2 discontinuous reception parameters

TD1, TD2 wake-up duration

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

SD1, SD2 wake-up time shift

t1, t2 Status information reporting time

DUP1, DUP2 during wake-up

ON Active state

OFF inactive state

During DTP data transfer

EP period

C1, C2 payback period

SC return time shift

CSI1, CSI2 entity uplink control channel resources

Detailed ways

The detailed features and advantages of the present invention are described in detail below in the embodiments, and the content is sufficient to enable any person skilled in the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the contents disclosed in this specification, claims and drawings, Objects and advantages associated with the present invention can be readily understood by any person skilled in the relevant art. The following examples further illustrate the concept of the present invention in further detail, but are not intended to limit the scope of the present invention in any way.

Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a schematic block diagram of a long-range evolution network architecture according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a user equipment according to an embodiment of the present invention. The method flow chart of the clustering method. As shown in FIG. 1 , the long-range evolution network architecture includes a base station eNB and a plurality of user equipments 1 to 8 . The base station eNB is communicatively connected to the user equipments 1 to 8 . In practice, the base station eNB has a radio resource control (RRC) layer and a medium access control (MAC) layer, and the base station eNB may have a scheduler disposed in the medium access control (MAC) layer. The Radio Resource Control (RRC) layer of the base station eNB may be used to set periodic channel state information (Channel State Information, CSI) reporting parameters and discontinuous reception (Discontinuous Reception, DRX) parameters of the user equipments.

As shown in the flow of the grouping method in FIG. 2 , in step S201 , one or more codes of each user equipment 1 to 8 are configured by the base station eNB, wherein each code corresponds to a delay upper limit. In step S202, the base station eNB performs the grouping task according to the delay upper limit and the channel requirement judgment result corresponding to each user equipment, so as to form one or more first-type groups and one or more second-type groups Group. Wherein, each first type group corresponds to a first group delay upper limit and each second type group corresponds to a second group delay upper limit.

In an embodiment, the step S201 includes configuring, by the base station eNB, one or more codes of the user equipment according to the service type of each user equipment. The service type may be various services such as voice/image transmission, interactive game, mail/community communication, file sharing, etc., which will not be listed one by one here.

In step S203, the base station eNB selects the user equipments in the first type groups and the second type groups according to the first group delay caps and the second group delay caps to form a or multiple target groups.

In an embodiment, the grouping method of the present invention further includes in step S204 that the base station eNB judges whether the target groups are to be assigned to the target groups according to the sum of the normalized channel requirements of the user equipments in each target group. at least one of them is divided.

In order to further illustrate the grouping method of the present invention, please refer to FIG. 3 and Table 1 together. FIG. 3 is a detailed method flowchart of the grouping method of user equipment according to another embodiment of the present invention, and Table 1 is based on In the lookup table of an embodiment of the present invention, the delay upper limit D _p,i is described in the following examples, where p represents the code, and i represents the number of the user equipment (numbers 1-8 in FIG. 1 ). The process of steps S301-304 in FIG. 3 is roughly the same as that in steps S201-S204 in FIG. 2, but the difference is that step S302 in FIG. 3 includes sub-steps S3021-3023, and step S304 includes sub-steps S3041-3042.

As shown in Figure 3, first in step S301, the base station eNB configures one or more codes of each user equipment 1 to 8, such as codes 1 to 9 shown in Table 1, and each configured code corresponds to a delay upper limit.

In sub-step S3021 of step S302, the base station eNB divides the user equipments into one or more initial first-type groups and one or more initial second-type groups according to the delay caps. In an embodiment, the sub-step S3021 includes selecting, by the base station eNB, user equipments with the same minimum delay upper limit from the user equipments 1-8 to form the one or more initial first type groups, and The base station eNB selects user equipments with the same maximum delay upper limit from among the user equipments 1 to 8 to form the one or more initial second type groups. The following will illustrate with practical examples.

Table I

code Latency cap (ms) Service type 2 100 TP1 4 150 TP2 3 50 TP3 5 300 TP4 1 100 TP5 6 300 TP6 7 100 TP7 8 300 TP8 9 300 TP9

In this example, assuming that the user equipment 1 provides service types TP1, TP2, TP6, the upper limit of delay D _2,1 is 100 milliseconds (ms), the upper limit of delay D _4,1 is 150 ms, and the upper limit of delay D _6,1 is 300 milliseconds. If the user equipment 2 provides service types TP2, TP3, and TP7, the upper limit of delay D _4,2 is 150 milliseconds, the upper limit of delay D _3,2 is 50 milliseconds, and the upper limit of delay D _7,2 is 100 milliseconds. If the user equipment 3 provides service types TP2 and TP8, the upper limit of delay D _4,3 is 150 milliseconds, and the upper limit of delay D _8,3 is 300 milliseconds. If the user equipment 4 provides service types TP1, TP2, and TP9, the upper limit of delay D _2,4 is 100 milliseconds, the upper limit of delay D _4,4 is 150 milliseconds, and the upper limit of delay D _9,4 is 300 milliseconds. If the user equipment 5 provides service types TP2 and TP3, the upper limit of delay D _4,5 is 150 milliseconds, and the upper limit of delay D _3,5 is 50 milliseconds. If the user equipment 6 provides service types TP3 and TP7, the upper limit of delay D _3,6 is 50 milliseconds, and the upper limit of delay D _7,5 is 100 milliseconds. If the user equipment 7 provides service types TP3 and TP5, the upper limit of delay D _3,7 is 50 milliseconds, and the upper limit of delay D _1,7 is 100 milliseconds. If the user equipment 8 provides service types TP2 and TP3, the upper limit of delay D _4,8 is 150 milliseconds, and the upper limit of delay D _3,8 is 50 milliseconds.

Please further refer to Table 2 and FIG. 4 . Table 2 is a summary table of the delay upper limit of the user equipment according to an embodiment of the present invention, and FIG. 4 is a schematic diagram of preliminary grouping according to an embodiment of the present invention. Based on the foregoing example, as shown in Table 2 and FIG. 4 , UEs 1 and 4 have the same minimum delay upper limit of 100 milliseconds, so the base station eNB classifies UEs 1 and 4 as an initial first type group Gm1 . The user equipment 3 has a minimum upper limit of delay of 150 milliseconds, and is separately classified as another initial first type group Gm2 by the base station eNB. The user equipments 2, 5, 6, 7, and 8 have the same minimum delay upper limit of 50 milliseconds, so the base station eNB classifies the user equipments 2, 5, 6, 7, and 8 as another initial first type group Gm3. In this embodiment, the upper limit of the first group delay corresponding to the initial first type group Gm1 is 100 milliseconds, the upper limit of the first group delay corresponding to the initial first type group Gm2 is 150 milliseconds, and the initial first group delay The upper limit of the first group delay corresponding to the type group Gm3 is 50 milliseconds.

On the other hand, the user equipments 1, 3, and 4 have the same maximum delay limit of 300 ms, so the base station eNB classifies the user equipments 1, 3, and 4 into an initial second-type group G11. The user equipments 2, 5, 8 have the same maximum delay ceiling of 150 ms, so the base station eNB classifies the user equipments 2, 5, 8 as another initial second type group G12. However, the user equipments 6 and 7 have the same maximum delay upper limit of 100 milliseconds, so the base station eNB classifies the user equipments 6 and 7 into another initial second type group G13. In this embodiment, the upper limit of the second group delay corresponding to the initial second type group G11 is 300 milliseconds, the upper limit of the second group delay corresponding to the initial second type group G12 is 150 milliseconds, and the initial second group delay The upper limit of the second group delay corresponding to the type group G13 is 100 milliseconds.

Table II

User Equipment 1 300ms, 150ms, 100ms User Equipment 2 150ms, 100ms, 50ms User Equipment 3 300ms, 150ms User Equipment 4 300ms, 150ms, 100ms User Equipment 5 150ms, 50ms User Equipment 6 100ms, 50ms User Equipment 7 100ms, 50ms User Equipment 8 150ms, 50ms

In step S3022, the base station eNB determines whether each user equipment in each initial second-type group has a traffic demand, so as to selectively select at least one user equipment in the initial second-type group are removed from this initial second type group to form one or more second type groups. In an embodiment, the step S3022 includes that when the base station eNB determines that at least one of the user equipments in one of the initial second type groups has a channel requirement, the base station eNB uses the user equipment from the initial second type group. Type groups are removed to form one or more second type groups.

In step S3023, the base station eNB determines whether each user equipment in each initial first type group has a channel requirement, so as to selectively select at least one user equipment in the initial first type group from this initial first type group. Type groups are removed to form one or more first type groups. In an embodiment, the step S204 includes that when the base station eNB determines that at least one of the user equipments in one of the initial first type groups does not have a channel requirement, the base station eNB uses the user equipment from the initial first type group. are removed from a group of one type to form one or more groups of a first type.

时，则代表此用户设备具有信道需求。反之，当

时，则代表此用户设备不具有信道需求。More specifically, a code of a user equipment corresponds to a normalized channel-usage demand. It is assumed that a user equipment has a normalized channel requirement R _p,i , where p represents a code, and i represents a number of the user equipment (numbers 1 to 8 in FIG. 1 ). In practice, the way of judging whether the user equipment has channel requirements is as follows: when

, it means that the user equipment has channel requirements. Conversely, when

, it means that the user equipment has no channel requirement.

Based on the aforementioned example, it is assumed that user equipments 1, 3, 5, 7 have channel requirements, while the remaining user equipments 2, 4, 6, 8 do not have channel requirements. At this time, the base station eNB removes the user equipments 1 and 3 in the initial second type group G11 from this initial second type group G11, and removes the user equipment 5 in the initial second type group G12 from this initial second type group G12 The group G12 is removed, and the user equipment 7 in the initial second type group G13 is removed from this initial second type group G13. On the other hand, the base station eNB removes the user equipment 4 in the initial first type group Gm1 from this initial first type group Gm1, and removes the user equipments 2, 6 and 8 in the initial first type group Gm3 from this initial first type group Gm1. Removed from the initial first type group Gm3.

In the foregoing embodiment, the base station eNB first performs preliminary grouping according to the maximum delay upper limit and the minimum delay upper limit of the user equipment, then determines whether each user equipment has a channel requirement, and removes some user equipments one by one. In another embodiment, the base station eNB may first determine whether each user equipment has a channel requirement, then group the user equipment according to the maximum delay upper limit and the minimum delay upper limit of the user equipment, and remove some user equipments according to the judgment of the channel requirement. In other words, the present invention is not limited to the sequence of the steps of the maximum and minimum delay upper limit grouping and channel demand judgment shown in step S302 of FIG. 3 .

Please further refer to FIG. 5 , which is a schematic diagram of grouping according to an embodiment of the present invention. After the specific user equipment is removed by the aforementioned base station eNB according to the channel requirement, the obtained grouping state of the user equipment is shown in detail in FIG. 5 . That is, after performing the above-mentioned grouping task, the first type groups Gm1'˜Gm3' and the second type groups G11'˜G13' as shown in FIG. 5 can finally be formed. Then, the base station eNB can further form one or more target groups according to the grouping state.

Specifically, as in step S303, the base station eNB selects the user equipments in the first type groups and the second type groups according to the first group delay caps and the second group delay caps Make selections to form one or more target groups. In one embodiment, the step S303 includes, when the base station eNB judges that one of the first group delay upper limits is equal to one of the second group delay upper limits, selecting the one corresponding to the first group delay upper limit. The user equipments in the first type group and the user equipments in the second type group corresponding to the second group delay upper limit form the target group.

In more detail, please refer to FIG. 6 , which is a schematic diagram of target grouping according to an embodiment of the present invention. In FIG. 5, since the upper limit of the second group delay corresponding to the second type group G12' is 150 milliseconds, and the upper limit of the first group delay corresponding to the first type group Gm2' is also 150 milliseconds, the base station eNB The user equipments 2 and 8 in the second type group G12' and the user equipment 3 in the first type group Gm2' can be selected to form a target group Gk1, as shown in FIG. 6 . On the other hand, since the upper limit of the second group delay corresponding to the second type group G13' is 100 milliseconds, and the upper limit of the first group delay corresponding to the first type group Gm1' is also 100 milliseconds, the base station eNB can The user equipment 6 in the second type group G13' and the user equipment 1 in the first type group Gm1' are selected to form a target group Gk2, as shown in FIG. 6 .

Next, in sub-step S3041 of step S304, the base station eNB determines whether the sum of the normalized channel requirements of the user equipments in any target group is greater than 1, and in sub-step S3042 , if the sum of the normalized channel requirements of the user equipments in any one of the target groups is greater than 1, the base station eNB divides the target group.

所计算而得到。Taking the target group Gk1 in the embodiment of FIG. 6 as an illustration, it is assumed that the normalized channel requirement R 2 of the user equipment ₂ is 0.2, the normalized channel requirement R 3 of the user equipment ₃ is 0.3, and the normalized channel requirement R _{8 of the user equipment 8} is 0.7. In this case, the base station eNB judges that the sum of the normalized channel requirements of the user equipments in the target group Gk1 is greater than 1, so the target group Gk1 needs to be divided. The value of the aforementioned normalized channel requirement can be, for example, given by

calculated.

In one embodiment, dividing the target group by the base station eNB includes selecting, by the base station eNB, a user equipment with a value of the maximum normalized channel requirement within the target group to form another target group other than the target groups . Taking the aforementioned example, since the user equipment 8 has the largest value of the normalized channel requirement, the base station eNB removes the user equipment 8 from the target group Gk1 to form another target group Gk3 ( not shown in the figure). The foregoing segmentation method of the target group is only for illustration, and the present invention is not limited thereto. In practice, after sub-step S3042 is executed, return to sub-step S3041 to perform judgment again until the sum of the normalized channel requirements of all the user equipments in the target group is less than 1. In other words, when the base station eNB determines that the sum of the normalized channel requirements of all the user equipments in the target groups is less than or equal to 1, the grouping method ends.

In practice, after completing the aforementioned grouping of the target groups, the base station eNB can further assign different physical uplink control channel resources to different target groups, and further allocate multiple users in the same target group. The device allocates channel state reporting resources. The following will describe the allocation of channel state reporting resources for multiple user equipments in a single target group.

In an embodiment, the grouping method proposed by the present invention further includes: sending radio resource control (RRC) configuration information to the user equipments in one of the target groups by the base station eNB, where the RRC configuration information includes a period The periodic channel state information report parameter and the discontinuous reception parameter, wherein the periodic channel state information report parameter includes the report period, the report time shift and the information of the physical uplink control channel (PUCCH) resource; when the base station eNB When the operation state predicts that a plurality of conflicting user equipments among the user equipments in the target group will perform channel state information reporting, the base station eNB determines that one of the conflicting user equipments will perform channel state information reporting, and sends a dormant The instruction is sent to other conflicting user equipments other than the conflicting user equipment that can perform channel state information reporting. Wherein, the RRC configuration information sent to the user equipments in the target group includes information of the same reporting period, the same reporting time shift and the same PUCCH resource. The sleep command may be a discontinuous reception command media access control layer control element (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

The target group GK2 is taken as an actual example to illustrate the above embodiment. Please refer to FIG. 1 , FIG. 6 , FIG. 7A and FIG. 7B together. FIG. 7A is a preliminary setting of the user equipment according to an embodiment of the present invention. waveform diagram, and FIG. 7B is an actual operation waveform diagram of the user equipment according to an embodiment of the present invention. The base station eNB individually sends Radio Resource Control (RRC) configuration information to the user equipment 1 and the user equipment 6, wherein as shown in the preliminary setting waveform diagram in FIG. 7A , the discontinuous reception parameter DRX1 configured for the user equipment 1 includes the discontinuous reception period. P1, wake-up time shift SD1 and wake-up duration TD1, and the discontinuous reception parameter DRX2 configured for the user equipment 6 includes a discontinuous reception period P2, wake-up time shift SD2 and wake-up duration TD2.

The wake-up duration and the sleep time are repeated periodically to form a power saving mechanism of discontinuous reception (Discontinuous Reception). In this embodiment, user equipment 1 and user equipment 6 are configured with the same reporting period (eg, C1 shown in FIG. 7A ), reporting time shift (eg, SC shown in FIG. 7A ) and PUCCH resources (eg, as shown in FIG. 7A ) CSI1). After completing the configuration of the aforementioned parameters of the user equipment 1 and the user equipment 6, the base station eNB further predicts the user equipment 1 and the user equipment 6 in the target group Gk2 according to the operation states of the user equipment 1 and the user equipment 6 Channel state information reporting will be performed concurrently. At this time, the base station eNB determines that the user equipment 1 and the user equipment 6 are conflicting user equipments.

In more detail, as shown in the actual operation waveform diagram of FIG. 7B , since both the user equipment 1 and the user equipment 6 are in the active state ON at the status information reporting time t1, the base station eNB determines that the user equipment 1 and the user equipment 6 will have a problem. The channel state information report conflicts, so the base station eNB can decide to perform the channel state information report for one of the two user equipments according to the data transmission status of the user equipment 1 and the user equipment 6, while the other user equipment receives the sleep from the base station eNB. command and enter the inactive state OFF. The sleep command may be a discontinuous reception command media access control layer control element (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

Taking the embodiment of FIG. 7B as an example, it is assumed that the user equipment 1 will perform data transmission and the user equipment 6 will not perform data transmission, the base station eNB decides that the user equipment 1 will perform the reporting of the channel state information, and on the other hand, send the dormancy The user equipment 6 is instructed to force it into a sleep state (ie inactive state OFF). By the above method, it is possible to avoid the collision of channel state information reports between the user equipment 1 and the user equipment 6, thereby achieving PUCCH resource sharing among different user equipments in the same target group. The sleep command may be a discontinuous reception command media access control layer control element (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

The aforementioned embodiments of FIGS. 7A and 7B mainly use the dormancy instruction issued by the base station eNB to force the user equipment that is not performing data transmission to enter a dormant state, so as to dynamically allocate the physical uplink control channel resources to the user equipment for periodic channels. The status information is reported, so as to improve the utilization efficiency of the physical uplink control channel resources and thereby reduce the overall demand for the physical uplink control channel resources. In another embodiment, the above object can be achieved by configuring the discontinuous reception period and the status information reporting period with a specific period length relationship, which will be described in detail below. The sleep command may be a discontinuous reception command media access control layer control element (DRX CommandMAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

In an embodiment, the grouping method proposed by the present invention further includes: executing a scheduling algorithm by the base station eNB to obtain the reporting period, the reporting time shift, and corresponding to the user equipments in one of the target groups. The discontinuous reception period of each user equipment, the wake-up time shift 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 reporting time; The base station eNB transmits radio resource control (RRC) configuration information to the user equipments respectively, and the RRC configuration information includes reporting period, reporting time shift, uplink control channel (PUCCH) resource information, and corresponding to receiving the RRC The discontinuous reception period of the user equipment of the configuration information, the wake-up time shift corresponding to the user equipment receiving the RRC configuration information, and the wake-up duration corresponding to the user equipment receiving the RRC configuration information. The RRC configuration information transmitted to the user equipments has the same reporting period, the same channel reporting time and the same PUCCH resource information.

The above embodiment is also described below by taking the target group GK2 as an actual example. Please refer to FIG. 1 , FIG. 5 , FIG. 8A and FIG. 8B together, wherein FIG. 8A is a preliminary setting waveform diagram of the user equipment according to another embodiment of the present invention, and FIG. 8B is another embodiment of the present invention. An actual operation waveform diagram of the user equipment according to an embodiment. As shown in FIG. 8A , the internal processor (not shown in the figure) of the base station eNB first executes the scheduling algorithm to obtain the status information reporting period C2, the reporting time shift SC, and the discontinuous reception of the corresponding user equipment 1 and the user equipment 6 Periods P1' and P2', wake-up time shifts SD1, SD2, and wake-up durations TD1 and TD2.

After obtaining the above parameters, the processor inside the base station eNB further sends the RRC configuration information to the user equipment 1 and the user equipment 6 respectively, wherein the RRC configuration information includes the status information reporting period C2, reporting time shift SC and PUCCH resources (eg CSI2 shown in FIG. 8A ). The RRC configuration information also includes discontinuous reception periods P1' and P2' corresponding to user equipment 1 and user equipment 6 and wake-up time shifts SD1, SD2 and wake-up durations TD1, TD2 corresponding to user equipment 1 and user equipment 6.

In this embodiment, the discontinuous reception periods P1' and P2' are set to be twice the status information reporting period C2, however, the multiples described herein are only examples, and the present invention is not limited thereto. In this embodiment, the user equipment 1 and the user equipment 6 are configured with the same reporting period C2, the same reporting time (eg t2) and the same PUCCH resource CSI2.

To further illustrate, the processor inside the base station eNB can be used to determine that one of the user equipment 1 and the user equipment 6 performs data transmission within the data transmission duration DTP (for example, including the wake-up duration TD1 and the extension period EP shown in FIG. 8B ). transmission. When the state information reporting time of the user equipment performing data transmission is within the data transmission duration DTP, the user equipment performing data transmission performs channel state information reporting, and user equipment other than the user equipment performing data transmission does not perform channel state information. return. The data transmission duration DTP is associated with the wake-up duration TD1. The wake-up durations TD1 and TD2 can be used to determine the wake-up periods DUP1 and DUP2 of the user equipments 1 and 6 .

Taking the actual operation waveform diagram of FIG. 7B as an example, assuming that the base station eNB determines that the first user equipment 1 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 user equipment 1 The channel state information reporting CSI1 will be performed using physical uplink control channel resources. In this case, the second user equipment 6 does not perform channel state information reporting. The state information reporting time t2 is determined by the reporting period C2 and the reporting 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. 7A and 7B , the base station eNB is used to extend the wake-up duration TD1 by a period EP to generate the data transmission duration DTP. That is, when the user equipment 1 transmits data during the wake-up duration TD1, since the wake-up duration TD1 is insufficient, the base station eNB can extend the wake-up duration TD1 by a period EP so that the user equipment 1 can continue to transmit data until the transmission is completed.

Based on the above, in the method for grouping user equipment proposed by the present invention, the base station firstly groups the user equipment according to the maximum delay upper limit and the minimum delay upper limit, and then according to the channel requirements of the user equipment User devices that remove part of the type group. Next, user equipments within these types of groups with the same group delay cap are selected to form a target group. Finally, the sum of the normalized channel requirements of the target group is determined to decide whether to further divide the target group. In this way, a plurality of user equipments can be appropriately grouped into different groups, so that the base station can individually configure parameters for these user equipments in a single group, so as to improve the channel resource utilization efficiency of the user equipments in a single group .

Claims (13)

1. A method for grouping user equipments, adapted to a plurality of user equipments connected to a base station, the method comprising:

configuring one or more codes for each of the user equipments with the base station, wherein each of the codes corresponds to a delay upper bound;

executing grouping tasks by the base station according to the delay upper limit and the channel requirement judgment result corresponding to each user equipment so as to form one or more first type groups and one or more second type groups, wherein each first type group corresponds to a first group delay upper limit and each second type group corresponds to a second group delay upper limit; and

selecting, with the base station, by user equipments within the first type group and the second type group to form one or more target groups according to the first group delay upper bound and the second group delay upper bound.

2. The clustering method of claim 1, further comprising:

and the base station judges whether to divide at least one of the target groups according to the sum of the values of the normalized channel requirements of the user equipment in each target group.

3. The grouping method of claim 2, wherein determining with the base station whether to partition at least one of the target groups according to a sum of values of normalized channel requirements for ues within each of the target groups comprises:

determining, by the base station, whether a sum of values of normalized channel requirements of the ues in any of the target groups is greater than 1; and

if the sum of the normalized channel requirement values of the UE in any one of the target groups is greater than 1, the base station divides the target group.

4. The grouping method of claim 3, wherein partitioning the target group with the base station comprises:

selecting, by the base station, the UE within the target group having the largest normalized channel requirement value to form another target group other than the target group.

5. The grouping method of claim 1, wherein the base station configures the one or more codes for each of the user equipments depending on a service type of the user equipment.

6. The grouping method of claim 1, wherein the performing the grouping task with the base station according to the upper delay bound and the channel requirement determination result corresponding to each of the ues to form the one or more first type groups and the one or more second type groups comprises:

dividing, by the base station, the user equipment into one or more initial first type groups and one or more initial second type groups according to the delay upper bound;

determining, with the base station, whether each of the user equipments within each of the initial second-type groups has channel requirements to selectively remove at least one user equipment within the initial second-type group from the initial second-type group to form the one or more second-type groups; and

determining, with the base station, whether each of the user equipments within each of the initial first-type groups has channel requirements, to selectively remove at least one user equipment within the initial first-type group from the initial first-type group to form the one or more first-type groups.

7. The grouping method of claim 6, wherein dividing the user equipments into the one or more initial first type groups and the one or more initial second type groups as a function of the upper delay limit with the base station comprises:

selecting, with the base station, user equipments having the same minimum upper delay limit from among the user equipments to form the one or more initial first type groups; and

selecting, with the base station, user equipments having the same maximum delay upper limit from among the user equipments to form the one or more initial second type groups.

8. The grouping method of claim 6, wherein determining with the base station whether each of the user equipments within each of the initial second-type groups has channel requirements to selectively remove at least one user equipment within the initial second-type group from the initial second-type group comprises:

when the base station determines that at least one of the user equipments within one of the initial second-type groups has a channel requirement, the base station removes the user equipment from the initial second-type group.

9. The grouping method of claim 6, wherein determining with the base station whether each of the user equipments within each of the initial first-type groups has channel requirements to selectively remove at least one user equipment within the initial first-type group from the initial first-type group comprises:

when the base station determines that at least one of the user equipments within one of the initial first-type groups has no channel requirement, the base station removes the user equipment from the initial first-type group.

10. The grouping method of claim 1, wherein forming the one or more target groups with the base station in accordance with the first group delay ceiling and the second group delay ceiling comprises:

and when the base station judges that one of the first group delay upper limits is equal to one of the second group delay upper limits, selecting the user equipment in the first type group corresponding to the first group delay upper limit and the user equipment in the second type group corresponding to the second group delay upper limit to form the target group.

11. The grouping method of claim 1, wherein the performing the grouping task with the base station according to the upper delay bound and the channel requirement determination result corresponding to each of the ues to form the one or more first type groups and the one or more second type groups comprises:

judging whether each user equipment has channel requirements or not by the base station;

dividing, by the base station, the user equipment into one or more initial first type groups and one or more initial second type groups according to the delay upper bound;

removing, with the base station, user equipment within the initial first-type group that do not have channel requirements from the initial first-type group to form the one or more first-type groups; and

removing, with the base station, user equipment having channel requirements within the initial second-type group from the initial second-type group to form the one or more second-type groups.

12. The clustering method of claim 1, further comprising:

sending, by the base station, radio resource control configuration information to the user equipments in one of the target groups, respectively, the radio resource control configuration information including a periodic channel state information (csi) reporting parameter and a discontinuous reception parameter, wherein the csi reporting parameter includes a reporting period, a reporting time offset, and information of an physical uplink control channel (pdcch) resource;

when the base station predicts that a plurality of conflicting user equipments in the target group will simultaneously perform channel state information reporting according to the operating state of the user equipments, the base station determines that one of the conflicting user equipments will perform channel state information reporting, and sends a sleep command to other conflicting user equipments except the conflicting user equipment that can perform channel state information reporting;

wherein the rrc configuration information sent to the ues in the target group includes the same reporting period, the same reporting time offset, and the same information of the physical uplink control channel resource.

13. The clustering method of claim 1, further comprising:

executing a scheduling algorithm with the base station to obtain a reporting period, a reporting time shift, and a drx period corresponding to each of the ues in one of the target groups, a wake-up time shift corresponding to each of the ues, and a wake-up duration corresponding to each of the ues, such that a wake-up period of each of the ues does not overlap with a channel reporting time; and

transmitting, by the base station, rrc configuration information to the ues respectively, wherein the rrc configuration information includes the reporting period, the reporting time shift, information of uplink control channel resources, and the drx period corresponding to the ue receiving the rrc configuration information, the wake-up time shift corresponding to the ue receiving the rrc configuration information, and the wake-up duration corresponding to the ue receiving the rrc configuration information;

wherein the radio resource control configuration information transmitted to the UE has the same reporting period, the same channel reporting time, and the same information of the uplink control channel resource.

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