WO2015168896A1

WO2015168896A1 - Measurement report sending method and device and communication system

Info

Publication number: WO2015168896A1
Application number: PCT/CN2014/077017
Authority: WO
Inventors: 鲁艳玲; 徐海博
Original assignee: 富士通株式会社; 鲁艳玲; 徐海博
Priority date: 2014-05-08
Filing date: 2014-05-08
Publication date: 2015-11-12

Abstract

Provided are a measurement report sending method and device and a communication system. The sending method comprises: in the case of a user equipment being provided with discontinuous reception (DRX), for event trigger and/or periodical trigger measurements, delaying the active time for a measurement report to come to an MCG. By means of the embodiments of the present invention, not only can unnecessary delay of a measurement report can be further reduced, but also the energy of a user equipment can be further saved.

Description

Method, device and communication system for transmitting measurement report

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a communication system for transmitting a measurement report.

Background technique

In an LTE-A (Long Term Evolution-Advanced) Carrier Aggregation (CA) system, multiple carriers are aggregated together and can be simultaneously associated with a single user equipment (UE, User Equipment, also called a terminal). The device or terminal) communicates, that is, one user equipment has multiple serving cells. Among the multiple serving cells, one is a primary cell (PCell, Primary Cell), and the other is a secondary cell (SCell, Secondary Cell). o In the existing CA system, the aggregated cells are all under the same base station, belonging to the same Carrier aggregation system of a base station.

In an existing CA system, the base station may configure a discontinuous reception (DRX, Discontinuous Reception) for the user equipment to control the user equipment pair C-RNTI, TPC-PUCCH-R TI TPC-PUSCH-RNT1 and SPS CR TI (if given Detection of a scrambled Physical Downlink Control Channel (PDCCH), such as when the user equipment is configured. If the user equipment is in the connected state, if the DRX is configured, the user equipment may detect the PDCCH discontinuously; if the DRX is not configured, the user equipment needs to continuously detect the PDCCH. DR is actually a cyclical process, of course the cycle can be changed.

Figure 1 is a schematic diagram of the DR cycle. As shown in Figure 1, it is divided into Active Time and Idle Time in each DR cycle. Among them, the activity time further includes the time in the following situations:

Now when onDurationTimer or drx-Inactivity Timer or drx-RetransmissionTimer or mac-ContentionResolutionTimer is running;

When a scheduling request is sent on the PUCCH (Physical Uplink Control Channel) and is in a pending state;

An uplink grant for a pending HARQ (Hybrid Automatic Repeat Request) retransmission can occur and there is data in the corresponding HARQ buffer; Now, after successfully receiving a random access response corresponding to a pilot signal that is not selected by the terminal, a PDCCH indicating the new transmission and addressed by the terminal's C-RNTI has not been received.

In addition, the user equipment does not need to trigger the SRS of type 0 during the idle time, and does not need to send CQI, PMI, RI, and ΡΉ on the PUCCH. However, when the user equipment is in idle time, if the user equipment has uplink data to trigger, the user equipment may send a scheduling request on the uplink to send uplink data. At this time, the DR needs to change from idle time to active time due to the dispatch request. In a CA system, the DR configuration is unique within each user equipment, which means that all active cells of the user equipment are either active or idle.

As described above, due to the introduction of the DR idle state, the detection of the relevant PDCCH and the transmission of the uplink signal by the user equipment are reduced, the energy loss is reduced, and the battery life is prolonged.

On the other hand, in the existing CA system, the base station configures measurement information for the user equipment, and the measurement parameters include measurement target, report configuration, measurement identifier, numerical configuration, and measurement gap. Based on these measurement parameters, the user equipment performs the measurement of the measurement identifier identification, measures the measurement target, and generates a measurement report according to the requirements of the report configuration and sends a measurement report to the base station. The trigger of the measurement report can be periodic or event-triggered.

When the user equipment triggers the measurement report, because the user equipment may be configured with DRX at the same time, if the trigger of the measurement report is just in the idle time of the DR, as described above, since the measurement report is uplink data, the user equipment may send a scheduling request. To request this from the base station to send this report. At this time, all active cells of the user equipment are switched from idle time to active time.

However, in practice, the measurement report only needs to be sent on one cell. At the same time, since the measurement report is not particularly urgent in many cases, it is stipulated in the existing protocol that when the user equipment is configured with DR, it is triggered by an event or Periodically triggered measurement reports, the user equipment can delay these measurement reports until the active time of the DR is resent, so that the energy of the user equipment is not wasted unnecessarily.

It should be noted that the above description of the technical background is only for the purpose of facilitating the clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these solutions are set forth in the background section of the present invention.

The following is a list of documents useful for understanding the present invention and conventional techniques, which are incorporated herein by reference as if fully set forth herein. [Non-Patent Document 1]: 3GPP TS 36.331 V12.1.0 (2014-03) Radio Resource Control (RRC) Protocol specification. (Release 12)

[Non-Patent Document 2]: 3GPP TR 36.321 V12.1.0 (2014-03) Medium Access Control (MAC) protocol specification (Release 12) Summary of the Invention

The inventors have found that in the case of dual connectivity (DC, Dual Connectivity), the user equipment can communicate with multiple base stations simultaneously. In the serving cell of the user equipment, the group of cells associated with the primary base station is referred to as a primary cell group (MCG), and the group of cells associated with the secondary base station is referred to as a secondary cell group (SCG).

In this case, the DR configuration of the user equipment may no longer be unique. For example, DRX can be configured for the MCG and SCG respectively, or DRX can be configured only for the MCG, or DRX can be configured only for the SCG. Since the measurement report can only be sent on the cell in the MCG, the energy of the user equipment cannot be further saved under the current mechanism, and an unnecessary delay in the measurement report occurs.

Embodiments of the present invention provide a method, an apparatus, and a communication system for transmitting a measurement report. The energy of the user equipment can be further saved and the unnecessary delay in the measurement report can be reduced.

According to a first aspect of the present invention, a method for transmitting a measurement report is provided, which is applied to a user equipment configured with a primary cell group MCG and a secondary cell group SCG, where the sending method includes:

In the case where the user equipment is configured with a discontinuous reception DR, for measurement of event triggers and/or periodic triggers, the measurement is delayed to report the activity time of the MCG.

According to a second aspect of the embodiments of the present invention, a device for transmitting a measurement report is provided, which is configured in a user equipment having a primary cell group MCG and a secondary cell group SCG, where the sending device includes:

The report sending unit delays the measurement of the activity time of the report to the MCG for the event trigger and/or the periodically triggered measurement if the user equipment is configured with the discontinuous reception DR.

According to a third aspect of the embodiments of the present invention, a communication system is provided, where the communication system includes: a user equipment, configured with a primary cell group MCG and a secondary cell group SCG; and the user equipment is configured with a discontinuous reception DR In the case of a event-triggered and/or periodically triggered measurement, the delay measurement reports the activity time to the MCG.

According to still another aspect of an embodiment of the present invention, a computer readable program is provided, wherein when at a user equipment When the program is executed, the program causes a computer to execute a transmission method of the measurement report as described above in the user equipment.

According to still another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute a transmission method of a measurement report as described above in a user equipment.

An advantageous effect of the embodiment of the present invention is that by delaying the measurement report to the active time of the MCG, not only the unnecessary delay of the measurement report can be further reduced, but also the energy of the user equipment can be further saved.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, which illustrate the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprising" is used to mean the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components. DRAWINGS

Many aspects of the invention can be better understood with reference to the following drawings. The components in the figures are not drawn to scale, but only to illustrate the principles of the invention. In order to facilitate the illustration and description of some parts of the invention, the corresponding parts in the drawings may be enlarged or reduced.

The elements and features described in one of the figures or one embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the

Figure 1 is a schematic diagram of a DR cycle;

Figure 2 is a schematic diagram of the DR in the case of dual connectivity;

3 is a schematic diagram of an example of a delay trigger measurement report in which a DR is configured in a dual connectivity; FIG. 4 is a schematic flowchart of a method for transmitting a measurement report according to Embodiment 1 of the present invention;

FIG. 5 is another schematic flowchart of a method for transmitting a measurement report according to Embodiment 1 of the present invention; FIG.

6 is a schematic diagram of a transmitting apparatus of a measurement report according to Embodiment 2 of the present invention; Figure 7 is a schematic block diagram showing the system configuration of the user equipment according to Embodiment 2 of the present invention; and Figure 8 is a block diagram showing the configuration of the communication system according to Embodiment 3 of the present invention.

detailed description

The foregoing and other features of the invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which are illustrated in the embodiments of the invention The invention includes all modifications, variations and equivalents falling within the scope of the appended claims.

In the current LTE-A system, a macro cell is mainly deployed. In the future, as the volume of business increases, it may be necessary to continue to deploy small cells. The coverage area of small cells is relatively small, but the number is relatively large. Therefore, if the deployment of small cells is simply carried out, without control and structural optimization, there will be many problems such as reduced mobility and increased control signaling burden.

In order to solve these problems, and in order to improve single-user traffic, the industry has proposed a new network protocol structure: dual connectivity. In the dual connectivity structure, the user equipment can simultaneously communicate with multiple base stations simultaneously. For example, the user equipment can simultaneously communicate with one macro base station and one small cell base station, or simultaneously with two small cell base stations.

Among the base stations that communicate with the user equipment, one base station provides the user equipment with a control interface between the user equipment and the core network, which may be referred to as the primary base station. In addition to the primary base station, other base stations that are concurrent with the user equipment may be referred to as secondary base stations. In the serving cell of the user equipment, the cell group associated with the primary base station is referred to as a primary cell group (MCG), and the cell group associated with the secondary base station is referred to as a secondary cell group (SCG, Secondary Cell Group). ₀ In a small cell system, since the user equipment needs to communicate with two base stations at the same time, the DR configuration of the user equipment is no longer unique, but there may be two sets of DR configurations, corresponding to the MCG and the SCG, respectively.

Figure 2 is a schematic diagram of DR in the case of dual connectivity. As shown in Figure 2, in the dual-connected user equipment, all active cells in the MCG follow the DR configuration corresponding to the MCG. All activated cells in the SCG follow the DR configuration corresponding to the SCG. Moreover, the parameters in the MCG DR and SCG DR configurations are It may be different, such as activity time and free time. At the same time, since the DR function itself is only an optional configuration, the user equipment may only have a DR configuration in one cell group; for example, only the SCG is configured with DRX, and the MCG is not configured with DRX. In a small cell system, since the measurement report can only be sent on the cell in the MCG, when the measurement report is triggered, the following problems occur in the two DR configurations:

Case 1: If the user equipment only configures the DRX of the SCG, it is in the idle time of the SCG when the measurement report is triggered. If the user equipment does not distinguish which cell group the idle time belongs to, the measurement report may be delayed until the activity time of the SCG. , the measurement report is sent in the MCG. However, in this case, the delay in the measurement report does not result in power savings, because the MCG does not have DRX configured and can always send data. In this case, the delay of the measurement report is not necessary.

Case 2: If the user equipment configures the DRX for the MCG and the SCG at the same time, then when the measurement report is triggered, the idle time of the DR of the SCG or/and the MCG, if the user equipment delays the measurement report, the SCG activity time starts early. At the start time of the MCG activity time, after the user equipment enters the SCG activity time, the measurement report is sent, but since the measurement report must be sent in the MCG, the user equipment sends a scheduling request in the MCG, and the MCG will Change from idle time to active time.

FIG. 3 is a schematic diagram of an example of a delay trigger measurement report when MCG DR and SCG DR are configured. As shown in FIG. 3, the trigger time of the measurement report is at time point A, and the time point measurement report is passed through a cell in the MCG. Send to the MeNB. As can be seen from Figure 3, the MCG's active time is advanced (the transmission of the measurement report can be delayed until time point C), obviously in this case, the power loss of the user equipment is increased.

In view of the above problems, the embodiments of the present invention will be described in detail below. Example 1

The embodiment of the invention provides a method for transmitting a measurement report, which is applied to a user equipment configured with a primary cell group MCG and a secondary cell group SCG. FIG. 4 is a schematic flowchart of a method for transmitting a measurement report according to an embodiment of the present invention. As shown in FIG. 4, the method includes:

Step 401: In the case that the user equipment is configured with the DR, for the event trigger and/or the periodic trigger measurement, the user equipment delays the measurement report to the MCG activity time.

In this embodiment, the DRX may be configured for the MCG and the SCG of the user equipment, that is, the MCG DRX and the SCG DRX, or the DRX may be configured only for the MCG, and the DRX may not be configured for the SCG. The MCG is configured with DRX. The invention is not limited thereto. In addition, with regard to event triggered measurement and periodic triggered measurement, it refers to the trigger of the measurement report is event trigger or periodic trigger, and can refer to related technologies. In this embodiment, if the user equipment is configured with DRX, the user equipment may delay event triggering and/or periodically triggered measurement reports until the active time of the MCG. This means that when the user equipment wants to delay the measurement report, it only needs to consider the DR configuration of the MCG, and does not need to consider the DR configuration of the SCG.

In one embodiment, where the user equipment MCG is not configured with a DR, there may be no need to consider whether to delay the measurement report.

For example, if the DRG is not configured on the MCG and the SC is configured with the DR, the user equipment does not have to delay the measurement report. Thereby, an unnecessary delay of the measurement report can be further reduced.

In another embodiment, where the user equipment MCG is configured with a DR, the measurement report can be delayed until the active time of the MCG.

For example, if DRX is configured in the SCG, then when the user equipment triggers the measurement report, if it finds that it is just in the MCG's idle time, then the measurement report is delayed until the MCG's active time. As shown in Figure 3, the user equipment can send a measurement report at point C. Thus, the energy of the user equipment is further saved compared to the measurement report being transmitted at point B.

FIG. 5 is another schematic flowchart of a method for transmitting a measurement report according to an embodiment of the present invention. As shown in FIG. 5, the method includes

Step 501: The user equipment determines whether the DRX is configured for the MCG and/or the SCG. Step 502 is performed if the MCG DR is configured, and step 503 is performed if the MCG DR is not configured.

Step 502, delay the measurement report until the MCG's active time.

Step 503, the measurement report is not delayed.

It can be seen from the above embodiment that by delaying the measurement report to the active time of the MCG, not only the unnecessary delay of the measurement report can be further reduced, but also the energy of the user equipment can be further saved. Example 2

The embodiment of the invention provides a device for transmitting a measurement report, which is configured in a user equipment having a primary cell group MCG and a secondary cell group SCG. The same contents as in Embodiment 1 will not be described again.

FIG. 6 is a schematic diagram of a sending apparatus of a measurement report according to an embodiment of the present invention. As shown in FIG. 6, the sending apparatus 600 includes: a report sending unit 601, where the user equipment is configured with discontinuous receiving DR, for an event Triggering and/or periodically triggered measurements, delaying the measurement of the activity time reported to the MCG.

The report sending unit 601 only considers the DR configuration of the MCG when delaying the measurement report. The DR configuration of the SCG is not considered.

As shown in FIG. 6, the transmitting device 600 may further include: a determining unit 602, configured to determine whether the DRX is configured for the MCG and/or the SCG.

In one embodiment, the report sending unit 601 is further configured to not consider whether to delay the measurement report if the MCG is not configured with a DR. For example, the report transmitting unit 601 does not delay the measurement report if the MCG is not configured with the DRX and the SCG is configured with the DR.

In another embodiment, the report transmitting unit 601 delays the measurement report until the active time of the MCG if the MCG is configured with a DR.

An embodiment of the present invention further provides a user equipment, including the transmitting apparatus 600 as described above.

FIG. 7 is a schematic block diagram showing the system configuration of the user equipment 700 according to the embodiment of the present invention. As shown in FIG. 7, the user equipment 700 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100. It is worth noting that the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

In one embodiment, the functionality of the transmitting device 600 can be integrated into the central processor 100. The central processing unit 100 may be configured to implement the transmission method of the measurement report as described in Embodiment 1.

In another embodiment, the transmitting device 600 can be configured separately from the central processing unit 100. For example, the transmitting device 600 can be configured as a chip connected to the central processing unit 100, and the functions of the transmitting device 600 can be implemented by control of the central processing unit.

As shown in FIG. 7, the user equipment 700 may further include: a communication module 110, an input unit 120, an audio processing unit 130, a display 160, and a power source 170. It should be noted that the user equipment 700 does not necessarily include all of the components shown in FIG. 7. In addition, the user equipment 700 may also include components not shown in FIG. 7, and reference may be made to the prior art.

As shown in FIG. 7, central processor 100, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 700. The operation of the part.

The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device. Information related to failures can be stored, and programs for performing related information can be stored. And the central processing unit 100 can execute the program stored by the memory 140 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here. use The various components of the household device 700 can be implemented by dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the invention.

It can be seen from the above embodiment that by delaying the measurement report to the active time of the MCG, not only the unnecessary delay of the measurement report can be further reduced, but also the energy of the user equipment can be further saved. Example 3

The embodiment of the present invention provides a communication system, and the same content as Embodiment 1 or 2 will not be described again.

FIG. 8 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 8, the communication system is shown in FIG.

800 includes: a primary base station 801 and a secondary base station 802;

As shown in FIG. 8, the communication system 800 further includes: a user equipment 803 configured with a primary cell group MCG and a secondary cell group SCG; and in a case where a discontinuous reception DR is configured, the user equipment 803 triggers for an event and/or Periodically triggered measurements, delayed measurement reports to the MCG's active time.

The user equipment 803 can also determine whether DRX is configured for the MCG and/or the SCG.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes the computer to execute the sending method of the measurement report described in Embodiment 1 in the user equipment.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the transmission method of the measurement report described in Embodiment 1 in the user equipment.

The above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like. One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein. ), an application specific integrated circuit (AS), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more micro-combinations combined with DSP communication Processor or any other such configuration.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are not intended to limit the scope of the invention. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.

Claims

claims

1. A method of sending a measurement report, applied to user equipment configured with a primary cell group MCG and a secondary cell group SCG. The sending method includes:

In the case where the user equipment is configured with discontinuous reception DR, for event-triggered and/or periodic-triggered measurements, the activity time of the measurement report to the MCG is delayed.

2. The sending method according to claim 1, wherein when delaying the measurement report, the user equipment only considers the DR configuration of the MCG and not the DR configuration of the SCG.

3. The sending method according to claim 1, wherein the sending method further includes:

The user equipment determines whether DRX is configured for the MCG and/or the SCG.

4. The sending method according to claim 3, wherein when the MCG is not configured with DR, whether to delay the measurement report is not considered.

5. The sending method according to claim 4, wherein when the MCG is not configured with DRX and the SCG is configured with DR, the measurement report is not delayed.

6. The sending method according to claim 3, wherein, in the case where the MCG is configured with DR, the measurement report is delayed until the activity time of the MCG.

7. A measurement report sending device, configured in user equipment having a primary cell group MCG and a secondary cell group SCG, the sending device includes:

The report sending unit, when the user equipment is configured with discontinuous reception DR, delays the activity time of the measurement report to the MCG for event-triggered and/or periodic-triggered measurements.

8. The sending device according to claim 7, wherein the report sending unit only considers the DR configuration of the MCG and not the DR configuration of the SCG when delaying the measurement report.

9. The sending device according to claim 7, wherein the sending device further includes:

A determination unit determines whether DRX is configured for the MCG and/or the SCG.

10. The sending device according to claim 9, wherein the report sending unit is further configured to:

When MCG is not configured with DR, it does not consider whether to delay the measurement report.

11. The sending device according to claim 10, wherein the report sending unit does not delay the measurement report when the MCG is not configured with DRX and the SCG is configured with DR.

12. The sending device according to claim 9, wherein the report sending unit is configured in the MCG If DR is set, the measurement report is delayed until the MCG activity time.

13. A communication system, the communication system includes:

The user equipment is configured with a primary cell group MCG and a secondary cell group SCG; in the case where the user equipment is configured with discontinuous reception DR, for event-triggered and/or periodic-triggered measurements, delay measurement reports to the MCG Activity time.

14. The communication system according to claim 13, wherein the user equipment determines whether DRX is configured for the MCG and/or the SCG.