CN111385903B

CN111385903B - Grouping method of user equipment

Info

Publication number: CN111385903B
Application number: CN201910103285.4A
Authority: CN
Inventors: 林佑恩; 黄任锋
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2018-12-27
Filing date: 2019-02-01
Publication date: 2023-08-18
Anticipated expiration: 2039-02-01
Also published as: TWI690225B; TW202025809A; CN111385903A

Abstract

A grouping method of user equipment includes configuring one or more codes of each user equipment with a base station, wherein each code corresponds to an upper delay bound. And the base station executes a grouping task according to the delay upper limits and the channel demand judging results 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 selects user equipment in the first type group and the second type group 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 invention relates to a grouping method of user equipment.

Background

In the field of Long Term Evolution (LTE) networks, in order to improve the spectrum usage efficiency and provide better service quality for the ue, the ue is often required to measure and report the radio channel. The base station can allocate the relevant parameters of the user equipment, so that the use benefit of the channel resource is improved.

Generally, a base station connects to a plurality of ues, and the properties of parameters of the ues, such as delay tolerance, may be different. When the number of the ue devices is large, the base station cannot easily allocate the parameters of the ue devices due to the difference of the parameter characteristics, so as to improve the usage benefit of the channel resources.

Disclosure of Invention

The invention provides a grouping method of user equipment, which mainly groups a plurality of user equipment, so that the user equipment in the same group has a corresponding delay upper limit, and a base station is used for allocating parameters of the user equipment in each group.

According to an embodiment of the present invention, a grouping method of user equipments 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 an upper delay limit; a base station executes a grouping task according to the delay upper limits and channel demand judging results 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 selects user equipment in the first type group and the second type group according to the first group delay upper limits and the second group delay upper limits to form one or more target groups.

In summary, in the method for grouping user equipment according to the present invention, the base station performs preliminary grouping on the user equipment according to the maximum delay upper limit and the minimum delay upper limit, and then removes part of the user equipment from the corresponding type groups according to the channel requirement (traffic demand) of the user equipment. User equipment within these types of groups having the same group delay upper bound are then selected to form the target group. Finally, the sum of the normalized channel requirements of the target group is determined to determine whether to further divide the target group. Therefore, a plurality of user equipment can be properly classified into different groups, so that the base station can allocate parameters for the user equipment in a single group respectively, thereby improving the channel resource utilization benefit of the user equipment in the single group.

The foregoing description of the disclosure and the following description of embodiments are presented to illustrate and explain the spirit and principles of the invention and to provide a further explanation of the invention as claimed.

Drawings

Fig. 1 is a block diagram of an lte network architecture according to an embodiment of the invention.

Fig. 2 is a flow chart of a method for grouping user equipments according to an embodiment of the invention.

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

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

FIG. 5 is a block diagram illustrating an embodiment of the present invention.

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

Fig. 7A is a preliminary setup waveform diagram of a ue according to an embodiment of the present invention.

Fig. 7B is a waveform diagram illustrating an actual operation of the ue according to an embodiment of the present invention.

Fig. 8A is a preliminary setup waveform diagram of a ue according to another embodiment of the present invention.

Fig. 8B is a waveform diagram illustrating an actual operation of a ue according to another embodiment of the present invention.

Symbol description

eNB base station

1-8 user equipment

Gm 1-Gm 3 initial first type group

Gl 1-Gl 3 initial second type group

Gm1 'to Gm3' first type group

Gl1 '-Gl 3' group of the second type

Gk1, gk2 target group

DRX1, DRX2 discontinuous reception parameters

TD1, TD2 wake-up duration

Discontinuous reception periods P1, P1', P2

SD1, SD2 wake-up time shift

time for reporting t1 and t2 state information

DUP1, DUP2 wake-up period

ON active state

OFF inactive state

During DTP data transmission

EP period

C1, C2 reporting period

SC return time shift

CSI1, CSI2 entity uplink control channel resources

Detailed Description

The detailed features and advantages of the present invention will be set forth in the detailed description that follows, and in part will be readily apparent to those skilled in the art from that description, claims, and appended drawings. The following examples further illustrate the aspects of the invention in detail, but are not intended to limit the scope of the invention in any way.

Referring to fig. 1 and fig. 2 together, fig. 1 is a block diagram of a long-range evolution network architecture according to an embodiment of the present invention, and fig. 2 is a flowchart of a grouping method of user equipments according to an embodiment of the present invention. 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 provided in the MAC layer. The Radio Resource Control (RRC) layer of the base station eNB may be configured to set periodic channel state information (Channel State Information, CSI) reporting parameters, discontinuous reception (Discontinuous Reception, DRX) parameters, etc. of the ue.

As shown in the grouping method flow in fig. 2, in step S201, one or more codes of each ue 1-8 are configured by the base station eNB, where each code corresponds to an upper delay limit. In step S202, the base station eNB performs grouping tasks according to the delay upper limits and the channel requirement determination results corresponding to each ue, 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 bound and each second type group corresponds to a second group delay upper bound.

In an embodiment, the step S201 includes configuring one or more codes of the ue with the base station eNB according to the service type of each ue. The service types may be voice/video transmission, interactive game, mail/community communication, file sharing, etc., which are not listed here.

In step S203, the base station eNB selects the user equipments in the first type group and the second type group according to the first group delay upper limits and the second group delay upper limits to form one or more target groups.

In an embodiment, the grouping method of the present invention further includes determining whether to divide at least one of the target groups according to the sum of the values of the normalized channel requirements of the ue in each of the target groups in step S204.

For further explanation of the grouping method of the present invention, please refer to fig. 3 together with a table, fig. 3 is a detailed method flowchart of the grouping method of the ue according to another embodiment of the present invention, and a table is a lookup table according to an embodiment of the present invention, the following example is described as the delay upper limit D _p,i Where p represents a code and i represents the number of the user equipment (e.g., numbers 1-8 of fig. 1). The flow of steps S301 to 304 of fig. 3 is substantially the same as steps S201 to S204 of fig. 2, except that step S302 of fig. 3 includes sub-steps S3021 to 3023, and step S304 includes sub-steps S3041 to 3042.

As shown in fig. 3, first, in step S301, the base station eNB configures one or more codes of each of the user equipments 1 to 8, for example, codes 1 to 9 shown in table one, and each configured code corresponds to one delay upper limit.

In sub-step S3021 of step S302, the ue is divided into one or more initial first type groups and one or more initial second type groups by the base station eNB according to the delay upper limits. In one embodiment, the step S3021 includes selecting, by the base station eNB, user equipments having the same minimum delay upper limit from among the user equipments 1 to 8 to form the one or more initial first type groups, and selecting, by the base station eNB, user equipments having 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 explain with a practical example.

List one

Code	Delay upper limit (millisecond)	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, it is assumed that the ue 1 provides service types TP1, TP2, TP6, with an upper delay bound D _2,1 100 milliseconds (ms), delay upper limit D _4,1 For 150 milliseconds, delay upper limit D _6,1 300 milliseconds. The user equipment 2 provides service types TP2, TP3, TP7 with an upper delay limit D _4,2 For 150 milliseconds, delay upper limit D _3,2 For 50 milliseconds, delay upper limit D _7,2 100 milliseconds. The user equipment 3 provides the service types TP2, TP8 with an upper delay limit D _4,3 For 150 milliseconds, delay upper limit D _8,3 300 milliseconds. The ue 4 provides the service types TP1, TP2, TP9 with an upper delay bound D _2,4 For 100 milliseconds, delay upper limit D _4,4 For 150 milliseconds, delay upper limit D _9,4 300 milliseconds. The user equipment 5 provides the service types TP2, TP3 with an upper delay limit D _4,5 For 150 milliseconds, delay upper limit D _3,5 Is 50 milliseconds. The user equipment 6 provides the service types TP3, TP7 with an upper delay limit D _3,6 For 50 milliseconds, delay upper limit D _7,5 100 milliseconds. The user equipment 7 provides the service types TP3, TP5 with an upper delay limit D _3,7 For 50 milliseconds, delay upper limit D _1,7 100 milliseconds. The user equipment 8 provides the service types TP2, TP3 with an upper delay limit D _4,8 For 150 milliseconds, delay upper limit D _3,8 Is 50 milliseconds.

Referring to table two and fig. 4, table two is a summary table of delay upper limits of the ue according to an embodiment of the invention, and fig. 4 is a schematic diagram of preliminary grouping according to an embodiment of the invention. Based on the foregoing example, as shown in table two and fig. 4, the ue 1, 4 has the same minimum delay upper limit of 100 ms, so the base station eNB classifies the ue 1, 4 as an initial first type group Gm1. The user equipment 3 has a minimum delay upper limit of 150 ms and is individually categorized by the base station eNB as another initial first type group Gm2. While the user equipments 2, 5, 6, 7, 8 have the same minimum delay upper limit of 50 milliseconds, the base station eNB classifies the user equipments 2, 5, 6, 7, 8 as a further initial first type group Gm3. In this embodiment, the first group delay upper limit corresponding to the initial first type group Gm1 is 100 ms, the first group delay upper limit corresponding to the initial first type group Gm2 is 150 ms, and the first group delay upper limit corresponding to the initial first type group Gm3 is 50 ms.

On the other hand, the user equipments 1, 3, 4 have the same maximum delay upper limit of 300 ms, so the base station eNB classifies the user equipments 1, 3, 4 as an initial second type group Gl1. The user equipments 2, 5, 8 have the same maximum delay upper limit of 150 ms, so the base station eNB classifies the user equipments 2, 5, 8 as another initial second type group Gl2. While the user equipments 6, 7 have the same maximum delay upper limit of 100 ms, the base station eNB classifies the user equipments 6, 7 as a further initial second type group Gl3. In this embodiment, the upper limit of the second group delay corresponding to the initial second type group Gl1 is 300 ms, the upper limit of the second group delay corresponding to the initial second type group Gl2 is 150 ms, and the upper limit of the second group delay corresponding to the initial second type group Gl3 is 100 ms.

Watch 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 ue in each initial second type group has a channel requirement (traffic demand) so as to selectively remove at least one ue in the initial second type group from the initial second type group to form one or more second type groups. In one embodiment, the step S3022 includes removing the ue from the initial second type group to form one or more second type groups when the base station eNB determines that at least one of the ues in one of the initial second type groups has a channel requirement.

In step S3023, the base station eNB determines whether each ue in each initial first type group has a channel requirement, so as to selectively remove at least one ue in the initial first type group from the initial first type group to form one or more first type groups. In one embodiment, the step S204 includes the base station eNB removing the ue from the initial first type group to form one or more first type groups when the base station eNB determines that at least one of the ues in one of the initial first type groups has no channel requirement.

In more detail, a code of a ue corresponds to a normalized channel demand (Normalized channel-usage demand). Assume a user equipment has normalized channel requirements R _p,i Where p represents a code and i represents the number of the user equipment (e.g., numbers 1-8 of fig. 1). In practice, the method for determining whether the ue has a channel requirement is as follows: when (when)And if so, the user equipment has channel requirements. On the contrary, when->If so, it represents that the ue has no channel requirement.

Based on the foregoing examples, it is assumed that the 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, 3 within the initial second type group Gl1 from this initial second type group Gl1, removes the user equipment 5 within the initial second type group Gl2 from this initial second type group Gl2, and removes the user equipment 7 within the initial second type group Gl3 from this initial second type group Gl3. On the other hand, the base station eNB removes the user equipments 4 within the initial first-type group Gm1 from this initial first-type group Gm1, and removes the user equipments 2, 6, 8 within the initial first-type group Gm3 from this initial first-type group Gm3.

In the foregoing embodiment, the base station eNB performs preliminary grouping according to the maximum delay upper limit and the minimum delay upper limit of the ue, and then determines whether each ue has a channel requirement, and removes part of the ue one by one. In another embodiment, the base station eNB may determine whether each ue has a channel requirement, then group the ue according to the maximum delay upper limit and the minimum delay upper limit of the ue, and remove a portion of the ue according to the determination of the channel requirement. In other words, the present invention is not limited to the maximum and minimum delay upper limit grouping and the channel requirement determining step sequence shown in step S302 in fig. 3.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating grouping according to an embodiment of the invention. After the specific ue is removed according to the channel requirement via the base station eNB, the grouping status of the obtained ue is shown in fig. 5. That is, after the grouping task is performed, the first type groups Gm1 'to Gm3' and the second type groups Gl1 'to Gl3' as shown in fig. 5 can be finally formed. The base station eNB may then further form one or more target groups according to the grouping status.

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

In more detail, referring to fig. 6, fig. 6 is a schematic diagram of target grouping according to an embodiment of the invention. In fig. 5, since the second group delay upper limit corresponding to the second type group Gl2 'is 150 ms and the first group delay upper limit corresponding to the first type group Gm2' is 150 ms, the base station eNB can select the user equipments 2, 8 in the second type group Gl2 'and the user equipment 3 in the first type group Gm2' to form a target group Gk1, as shown in fig. 6. On the other hand, since the second group delay upper limit corresponding to the second type group Gl3 'is 100 ms and the first group delay upper limit corresponding to the first type group Gm1' is 100 ms, the base station eNB can select the ue 6 in the second type group Gl3 'and the ue 1 in the first type group Gm1' to form a target group Gk2, as shown in fig. 6.

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

For the description of the target group Gk1 in the embodiment of fig. 6, it is assumed that the normalized channel requirements R of the user equipment 2 ₂ Normalized channel requirement R for 0.2, user equipment 3 ₃ Normalized channel requirement R for 0.3, user equipment 8 ₈ 0.7. In this case, the base station eNB determines that the sum of the values of the normalized channel requirements of the user equipments in the target group Gk1 is greater than 1, and thus needs to divide this target group Gk 1. The value of the normalized channel requirement described above may be determined, for example, byCalculated.

In one embodiment, the base station eNB partitioning the target group includes selecting the ue having the largest value of normalized channel requirement in the target group by the base station eNB to form another target group other than the target groups. In the above example, since the ue 8 has the largest value of the normalized channel requirement, the base station eNB moves the ue 8 out of the target group Gk1 to form another target group Gk3 (not shown) containing the ue 8. The foregoing dividing manner of the target group is only for illustration, and the invention is not limited thereto. In practice, after the execution of the sub-step S3042, the process returns to the sub-step S3041 to make a determination again until the sum of the values of the normalized channel requirements possessed by the user equipments in all the target groups is less than 1. In other words, when the base station eNB determines that the sum of the values of the normalized channel requirements of the user equipments in the target groups is less than or equal to 1, the grouping method is terminated.

In practice, after completing the grouping of the target groups, the base station eNB may further assign different physical uplink control channel resources to different target groups, and allocate the csi feedback resources to a plurality of ues in the same target group. The allocation of channel state reporting resources for a plurality of user equipments within a single target group will be described below.

In an embodiment, the grouping method according to the present invention further includes: a base station eNB respectively sends Radio Resource Control (RRC) configuration information to the user equipment in one of the target groups, wherein the RRC configuration information comprises periodic channel state information reporting parameters and discontinuous reception parameters, and the periodic channel state information reporting parameters comprise reporting period, reporting time displacement and information of Physical Uplink Control Channel (PUCCH) resources; when the base station eNB predicts that a plurality of conflict user equipment in the target group will execute channel state information reporting according to the operation states of the user equipment, the base station eNB determines that one of the conflict user equipment will execute channel state information reporting and sends a dormancy instruction to other conflict user equipment except the conflict user equipment capable of executing channel state information reporting. The RRC configuration information sent to the ues in the target group includes the same reporting period, the same reporting time shift, and the same PUCCH resource information. The sleep command may be a discontinuous reception command medium access control layer control unit (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

Taking the target group GK2 as a practical example to describe the above embodiments, please refer to fig. 1, 6, 7A and 7B together, wherein fig. 7A is a preliminary setup waveform diagram of the ue according to an embodiment of the present invention, and fig. 7B is a practical operation waveform diagram of the ue according to an embodiment of the present invention. The base station eNB individually transmits Radio Resource Control (RRC) configuration information to the ue 1 and the ue 6, wherein, as shown in the preliminary set waveform diagram of fig. 7A, the DRX1 configured to the ue 1 includes a discontinuous reception period P1, a wake-up time shift SD1 and a wake-up duration TD1, and the DRX2 configured to the ue 6 includes a discontinuous reception period P2, a wake-up time shift SD2 and a wake-up duration TD2.

The wakeup duration and the sleep time are repeated in a periodic manner to form a power saving mechanism for discontinuous reception (Discontinuous Reception). In this embodiment, ue 1 and ue 6 are configured with the same reporting period (e.g., C1 shown in fig. 7A), reporting time shift (e.g., SC shown in fig. 7A), and PUCCH resource (e.g., CSI1 shown in fig. 7A). After completing the configuration of the parameters of ue 1 and ue 6, the base station eNB further predicts that ue 1 and ue 6 in the target group Gk2 will execute the channel state information reporting at the same time according to the operation states of the ue 1 and ue 6. At this time, the base station eNB determines that the ue 1 and the ue 6 are conflicting ues.

In more detail, as shown in the actual operation waveform diagram of fig. 7B, since the ue 1 and the ue 6 are both in the active state ON at the state information reporting time t1, the base station eNB determines that the ue 1 and the ue 6 will collide with each other in the channel state information reporting, so that the base station eNB can determine to perform the channel state information reporting for one of the two ues according to the data transmission states of the ue 1 and the ue 6, and the other ue receives the sleep command from the base station eNB to enter the inactive state OFF. The sleep command may be a discontinuous reception command medium access control layer control unit (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

For the embodiment of fig. 7B, it is assumed that ue 1 will perform data transmission, and ue 6 will not perform data transmission, the base station eNB decides to perform channel state information reporting by ue 1, and on the other hand sends a sleep command to ue 6 to force it to enter sleep state (i.e. inactive state OFF). By the method, the conflict of channel state information return between the user equipment 1 and the user equipment 6 can be avoided, and further PUCCH resource sharing among different user equipment in the same target group is achieved. The sleep command may be a discontinuous reception command medium access control layer control unit (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

The foregoing embodiments of fig. 7A and fig. 7B mainly use the sleep command sent by the base station eNB to force the ue that does not perform data transmission to enter the sleep state, so as to dynamically allocate the physical uplink control channel resources to the ue for periodic channel state information reporting, so as to achieve the purpose of improving the usage benefit of the physical uplink control channel resources and further reduce the overall requirement 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 specific period length relationships, which will be described in detail below. The sleep command may be a discontinuous reception command medium access control layer control unit (DRX Command MAC CONTROL ELEMENT, DRX CE), but is not limited thereto.

In an embodiment, the grouping method according to the present invention further includes: a base station eNB executes a scheduling algorithm to obtain a reporting period, a reporting time shift, a discontinuous receiving period corresponding to each user equipment in the user equipments in one of the target groups, a wake-up time shift corresponding to each user equipment, and a wake-up duration corresponding to each user equipment, so that the wake-up period of each user equipment is not overlapped with the channel reporting time; the base station eNB respectively transmits Radio Resource Control (RRC) configuration information to the user equipments, wherein the RRC configuration information comprises a reporting period, a reporting time shift, information of uplink control channel (PUCCH) resources, a discontinuous reception period corresponding to the user equipment receiving the RRC configuration information, a wake-up time shift corresponding to the user equipment receiving the RRC configuration information and a wake-up duration corresponding to the user equipment receiving the RRC configuration information. The RRC configuration information transmitted to the ues has the same reporting period, the same channel reporting time, and the same PUCCH resource information.

The above embodiment will be described below with the target group GK2 as a practical example. Referring to fig. 1, fig. 5, fig. 8A and fig. 8B together, fig. 8A is a preliminary setup waveform diagram of a ue according to another embodiment of the present invention, and fig. 8B is an actual operation waveform diagram of the ue according to another embodiment of the present invention. As shown in fig. 8A, a processor (not shown) in the base station eNB first executes a scheduling algorithm to obtain a status information reporting period C2, a reporting time shift SC, discontinuous reception periods P1 'and P2' corresponding to the ue 1 and the ue 6, wake-up time shifts SD1 and SD2, and wake-up durations TD1 and TD2.

After obtaining the above parameters, the processor in the base station eNB further sends RRC configuration information to the ue 1 and the ue 6, respectively, wherein the RRC configuration information includes information of a state information reporting period C2, a reporting time shift SC, and PUCCH resources (e.g. CSI2 shown in fig. 8A). The RRC configuration information further includes discontinuous reception periods P1 'and P2' corresponding to the ue 1 and the ue 6 and wake-up time shifts SD1 and SD2 and wake-up durations TD1 and TD2 corresponding to the ue 1 and the ue 6.

In this embodiment, the discontinuous reception periods P1 'and P2' are set to be twice the state information reporting period C2, however, the multiple is only for illustration, and the invention is not limited thereto. In this embodiment, ue 1 and ue 6 are configured with the same reporting period C2, the same reporting time (e.g., t 2), and the same PUCCH resource CSI2.

Further, the processor in the base station eNB may be configured to determine that one of the ue 1 and the ue 6 performs data transmission during the data transmission duration DTP (e.g. including the wake-up duration TD1 and the extended period EP shown in fig. 8B). When the state information reporting time of the ue performing data transmission is within the data transmission duration DTP, the ue performing data transmission performs channel state information reporting, and the ues other than the ue performing data transmission do not perform channel state information reporting. The data transmission duration DTP is associated with the wakeup duration TD1. The wake-up durations TD1 and TD2 may be used to determine the wake-up periods DUP1 and DUP2 of the ue 1 and 6, and the wake-up periods DUP1 and DUP2 are staggered (i.e. do not overlap) with the status information reporting time (e.g. t 2).

For the actual operation waveform diagram of fig. 7B, it is assumed that the base station eNB determines that the first ue 1 performs data transmission within the data transmission duration DTP, and the status information reporting time t2 is located in the data transmission duration DTP, the ue 1 uses the physical uplink control channel resource to perform the CSI reporting CSI1. In this case, the second ue 6 does not perform the 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 fig. 7A and 7B, the base station eNB is configured to extend the wake-up duration TD1 by a period EP to generate the data transmission duration DTP. That is, when the ue 1 performs data transmission during the wakeup duration TD1, the base station eNB may extend the wakeup duration TD1 by a period EP to allow the ue 1 to continue transmitting data until the transmission is completed because the wakeup duration TD1 is insufficient.

In view of the foregoing, in the method for grouping user equipment according to the present invention, the base station performs preliminary grouping on the user equipment according to the maximum delay upper limit and the minimum delay upper limit, and then removes part of the user equipment from the corresponding type groups according to the channel requirements of the user equipment. User equipment within these types of groups having the same group delay upper bound are then selected to form the target group. Finally, the sum of the normalized channel requirements of the target group is determined to determine whether to further divide the target group. Therefore, a plurality of user equipment can be properly classified into different groups, so that the base station can allocate parameters for the user equipment in a single group respectively, thereby improving the channel resource utilization benefit of the user equipment in the single group.

Claims

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

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

the base station executes grouping tasks according to the delay upper limit and the channel demand judging 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

the base station selects user equipment in the first type group and the second type group according to the first group delay upper limit and the second group delay upper limit to form one or more target groups.

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

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

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

judging whether the sum of the values of the normalized channel demands of the user equipment in any one of the target groups is greater than 1 by the base station; and

if the sum of the values of the normalized channel demands of the user equipment in any one of the target groups is greater than 1, the base station divides the target groups.

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

and selecting the user equipment with the maximum normalized channel requirement value in the target group by the base station to form another target group outside the target group.

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

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

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

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

7. The method of grouping of claim 6, wherein dividing the user equipment into the one or more initial first type groups and the one or more initial second type groups by the base station according to the delay upper bound comprises:

selecting, by the base station, user equipment from among the user equipment having a same minimum delay upper bound to form the one or more initial first type groups; and

and selecting user equipment with the same maximum delay upper limit from the user equipment by the base station to form one or more initial second type groups.

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

the base station removes the user equipment from among the initial second type groups when the base station determines that at least one of the user equipment within one of the initial second type groups has channel requirements.

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

the base station removes the user equipment from among the initial first type groups when the base station determines that at least one of the user equipment within one of the initial first type groups does not have a channel requirement.

10. The method of grouping of claim 1, wherein forming the one or more target groups with the base station in accordance with the first group delay upper bound and the second group delay upper bound 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 method of grouping according to claim 1, wherein performing the grouping task with the base station according to the delay upper bound and the channel requirement determination result corresponding to each of the user equipments, forming 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;

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

user equipment having channel requirements within the initial second type group is removed from the initial second type group by the base station to form the one or more second type groups.

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

the base station respectively sends wireless resource control configuration information to user equipment in one of the target groups, wherein the wireless resource control configuration information comprises periodic channel state information reporting parameters and discontinuous receiving parameters, and the periodic channel state information reporting parameters comprise reporting period, reporting time displacement and information of physical uplink control channel resources;

when the base station predicts that a plurality of conflict user equipment in the target group will execute channel state information reporting at the same time according to the operation state of the user equipment, the base station determines that one of the plurality of conflict user equipment will execute channel state information reporting and sends a dormancy instruction to other conflict user equipment except the conflict user equipment capable of executing channel state information reporting;

wherein the radio resource control configuration information sent to the ue in the target group includes information of the same reporting period, the same reporting time shift, and the same physical uplink control channel resource.

13. The grouping 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 discontinuous reception period corresponding to each of the user equipments in one of the target groups, a wake-up time shift corresponding to each of the user equipments, and a wake-up duration corresponding to each of the user equipments, so that a wake-up period of each of the user equipments does not overlap with a channel reporting time; and

transmitting radio resource control configuration information to the ue with the base station, respectively, and the radio resource control configuration information includes the reporting period, the reporting time shift, information of uplink control channel resources, and the discontinuous reception period corresponding to the ue receiving the radio resource control configuration information, the wake-up time shift corresponding to the ue receiving the radio resource control configuration information, and the wake-up duration corresponding to the ue receiving the radio resource control 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.