WO2016197740A1

WO2016197740A1 - Rate splitting method and apparatus and evolved node

Info

Publication number: WO2016197740A1
Application number: PCT/CN2016/080522
Authority: WO
Inventors: 许倩倩
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-01-05
Filing date: 2016-04-28
Publication date: 2016-12-15
Also published as: CN106941698A

Abstract

A rate splitting method and apparatus and an evolved node which are applied to the technical field of carrier aggregation. The method comprises: an eNB determining a scheduling capacity in different cells/on different carriers within a previous moment or a period of time, and then the eNB splitting a rate resource according to the scheduling capacity in different cells/ on different carriers when a UE has a data scheduling demand or within the next time cycle.

Description

Method, device and evolved node for rate splitting

Technical field

The present application relates to, but is not limited to, the field of Carrier Aggregation (CA) in the Long Term Evolution-Advanced (LTE-A) system.

Background technique

LTE-A is the 3rd Generation Partnership Project (3GPP) to meet the requirements of the International Telecommunication Union (ITU) for the 4G mobile communication standard (International Mobile Telecommunication Advanced, referred to as For the long-term evolution (Long Term Evolution: LTE) follow-up evolution technology standard introduced by the requirements of IMT-A), LTE-A can support a system bandwidth of 100 megahertz (MHz), and the downlink peak rate exceeds 1 GHz. Bits per second (Gbps) with an upstream peak rate of 500 megabits per second (Mbps). The LTE-A system design not only needs to meet the performance requirements, but also considers good backward compatibility with LTE to reduce the cost of carrier network upgrade.

In order to meet the peak rate requirement, LTE-A can support a maximum of 100 MHz bandwidth. However, it is difficult to find such a large bandwidth in the available spectrum resources of the related art, and the large bandwidth brings great difficulty to the hardware design of the base station and the terminal. In addition, for spectrum resources dispersed in multiple frequency bands, a technology is needed to make full use of them. Based on the above considerations, LTE-A introduces the key technology of carrier aggregation.

The basic method of carrier aggregation is to divide a continuous spectrum or multiple discrete spectrum into multiple component carriers (Component Carrier, CC for short). A user equipment (User Equipment, UE for short) that supports carrier aggregation can aggregate multiple component carriers and can simultaneously use physical resource blocks (Physical Resource Blocks, PRBs) on all aggregated component carriers. The number of aggregated component carriers is up to five, and each component carrier is up to 20 MHz; these component carriers may be continuous or spaced in frequency.

In the carrier aggregation scenario, Evolved Node B (abbreviated as: eNB) will be 2 The multiple carriers are aggregated together, and the radio resource control (Radio Resource Control, RRC for short) re-distribution message is sent to the UE, so that the UE can use the aggregated carrier to perform service transmission. The carrier that maintains the RRC connection with the UE is called a primary carrier component (PCC), and the corresponding cell is called a primary cell (Primary Cell, abbreviated as: Pcell); The carrier other than the primary carrier is called a secondary carrier component (SCC), and the corresponding cell is called a secondary cell (Scell). For the UE supporting the CA, the primary carrier and the primary cell are always activated, the secondary carrier and the secondary cell are deactivated by default, and need to be activated before being used, and the secondary carrier and the secondary cell can pass the activated carrier and the cell. The activation is performed; likewise, the secondary carrier can also be deactivated by the activated carrier and the cell.

The physical downlink control channel (Physical downlink shared channel, PDCCH)/Physical downlink shared channel (PDSCH)/Physical uplink shared channel (PUSCH) Both are on the PCC, and the PDCCH/PDSCH/PUSCH of the SCC may be on different CCs. In addition, because the carrier that establishes the link with the UE has only the primary carrier, the rate information configured by the core network to the UE, for example, Guaranteed Bit Rate (GBR), Maximum Bit Rate (Maximum Bit Rate, referred to as: The information such as the MBR and the Aggregate Maximum Bit Rate (AMBR) is only sent to the primary carrier. After the secondary carrier is activated, the rate information configured by the core network to the UE cannot be received. The secondary carrier is limited by these rate resources when scheduling. Therefore, in the scenario of such carrier aggregation, the related technical solution still has the following problems to be solved: when the secondary carrier or the secondary cell is activated, it is required. When scheduling the primary carrier and the secondary carrier resources, the problem of splitting the rate resources between different carriers or cells is involved.

However, related technologies in the above application scenarios, the research on rate splitting technology is still blank.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

This paper provides a method, device and evolved node for rate splitting to fill the carrier aggregation. The gap of the rate splitting technology under the function can fully utilize the resources of different carriers or cells, which can reduce the waste of carrier or cell resources and maximize the scheduling rate and service experience of the user.

A method for rate splitting is applied to a carrier aggregation technology, and the method includes:

The evolved node eNB determines scheduling capabilities on different cells/carriers in the previous time or time period;

The eNB splits the rate resource according to the scheduling capability on the different cell/carrier in the user equipment UE having the data scheduling requirement or the next time period.

Optionally, before the eNB determines scheduling capability on different cells/carriers in the last time or time period, the eNB further includes:

The eNB splits the rate resources between the different cells/carriers in a fixed ratio.

Optionally, the eNB determines scheduling capabilities on different cells/carriers in the last time or time period, including:

Determining, by the eNB, a rate on the different cell/carrier in a last time or time period;

The eNB determines a ratio of rates on the different cells/carriers according to rates on the different cells/carriers in a previous time or time period.

Optionally, the eNB determines a rate on the different cell/carrier in a last time or a time period, including:

The eNB determines a rate on the different cell/carrier according to channel quality, occupied resources, and number of times of scheduling.

A rate splitting device is applied to a carrier aggregation technology, the device comprising:

The scheduling capability determining module is configured to: determine scheduling capabilities on different cells/carriers in the last time or time period;

The rate resource splitting module is configured to: when the user equipment UE has a data scheduling requirement or a next time period, determine, according to the scheduling capability, a scheduling capability split rate resource on a different cell/carrier determined by the module.

Optionally, the apparatus further includes: a rate resource initial splitting module, configured to set the rate at a fixed ratio before the scheduling capability determining module determines the scheduling capability on different cells/carriers in the last time or time period. Resources are split between the different cells/carriers.

Optionally, the scheduling capability determining module is configured to: determine a rate on the different cell/carrier in a last time or a time period; and select a rate on the different cell/carrier according to a previous time or a time period. A ratio of rates on the different cells/carriers is determined.

Optionally, the scheduling capability determining module is configured to determine a rate on the different cell/carrier in the last time or time period, including:

The method is configured to determine a rate on the different cell/carrier according to channel quality, occupied resources, and number of times of scheduling.

An evolved node, the evolved node comprising the rate splitting device of any of the above.

The method and apparatus for rate splitting and the evolved node provided by the embodiment of the present invention, the eNB determines the scheduling capability on different cells/carriers in the last time or time period, and has the data scheduling requirement or the next time period in the UE. Separating the rate resources according to the determined scheduling capabilities on different cells/carriers; thereby filling the technical gap in the domain splitting technology under the carrier aggregation function, fully utilizing the resources of different carriers or cells, and reducing the waste of carrier or cell resources. Maximize the user's scheduling rate and business experience.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic flowchart of a method for rate splitting according to an embodiment of the present invention;

2 is a schematic flowchart of another method for rate splitting according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a device for rate splitting according to an embodiment of the present invention; FIG.

4 is a schematic structural diagram of another apparatus for rate splitting according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an evolved node according to an embodiment of the present invention.

Embodiments of the invention

In the rate splitting scheme disclosed in the embodiment of the present invention, when the UE accesses the PCC or the Pcell, and the SCC or the Scell is also activated, the eNB determines the scheduling capability on different cells/carriers in the previous time or time period, and then The eNB has different data scheduling requirements or the next time period according to the UE. The scheduling capability on the cell/carrier splits the rate resource.

Optionally, before the eNB determines the scheduling capability on different cells/carriers in the last time or time period, the eNB may first split the rate resources in different cells/carriers at a fixed ratio.

The method, the device and the evolved node of the rate splitting provided by the embodiment of the present invention are used to fill in the blank of the speed splitting technology in the carrier aggregation function, fully utilize resources of different carriers or cells, and reduce carrier or cell resources. Waste, maximize the user's scheduling rate and business experience.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments herein may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

Embodiment 1

A first embodiment of the present invention provides a method for rate splitting. As shown in FIG. 1 , it is a schematic flowchart of a method for rate splitting according to an embodiment of the present invention. The embodiments of the present invention are applied to the field of carrier aggregation technology. When the UE accesses the PCC or the Pcell, and the SCC or the Scell is also activated, the method for rate splitting provided in this embodiment includes the following steps, namely, S101 to S102:

S101. The eNB determines scheduling capability on different cells/carriers in the last time or time period.

S102: The eNB splits the rate resource according to scheduling capability on different cells/carriers when the UE has a data scheduling requirement or a next time period.

Optionally, as shown in FIG. 2, it is a schematic flowchart of another method for rate splitting according to an embodiment of the present invention. The method for rate splitting provided by the embodiment shown in FIG. 2 may include the following steps S201 to S103:

S201. The eNB splits the rate resource between different cells/carriers in a fixed ratio.

S202. The eNB determines scheduling capability on different cells/carriers in the last time or time period.

S203. The eNB splits the rate resource according to scheduling capability on different cells/carriers when the UE has a data scheduling requirement or a next time period.

Optionally, in the embodiment, S202 may include: determining, by the eNB, a rate on a different cell/carrier in a last time or a time period; and determining, by the eNB, the rate on the different cell/carrier in the last time or time period. The ratio of the rates on different cells/carriers. Optionally, the manner in which the eNB determines the rate on the different cell/carrier in the last time or the time period may be: the eNB determines the rate on the different cell/carrier according to the channel quality, the occupied resource, and the number of times of scheduling.

The technical solution will be further explained in detail below with reference to examples.

Example 1: The initial access of the UE with Index=10 activates two carriers, and the core network configures the AMBR rate for the UE to be 50 megabits per second (Mbits/s).

Step 1: The eNB allocates a rate resource configured by the core network to the UE to be equally divided between the activated two carriers.

Step 2: The eNB determines the scheduling capability of different carriers in the last scheduling;

The most recently scheduled channel quality of the UE on the carrier 1 is 22, and the occupied resource is 32. According to the protocol, the number of bits that the UE has recently scheduled is 14688 bits, and the number of scheduling times of the UE in the last 1 s on the carrier is 2. Second, it can be determined that the rate of the UE on carrier 1 is 14688*2=29376 bits/s.

The most recently scheduled channel quality of the UE on the carrier 2 is 16 and the occupied resource is 40. According to the protocol, the number of bits that the UE has recently scheduled is 12216 bits, and the number of scheduling times of the UE in the last 1 s on the carrier is 3. Second, it can be determined that the rate of the UE on carrier 2 is 12216*3=36648 bits/s.

Then the ratio of the UE's scheduling capability on carrier 1 and carrier 2 is: 29376:36648=1:1.25

Step 3: When the UE has data scheduling requirements, the eNB splits the rate resources according to scheduling capabilities on different carriers. The result of the splitting is that the AMBR rate of the UE on carrier 1 is: 50*1/(1+1.25)=22.2 Mbits/s; the AMBR rate of the UE on carrier 2 is: 50*1.25/(1+1.25)= 27.8 Mbits/s.

Example 2: The initial access of the UE with Index=10 activates two carriers, and the AMBR rate configured by the core network for the UE is 50 Mbits/s.

Step 2: The eNB determines the scheduling capability of different carriers in the previous time period, and the time period is 500 milliseconds (ms);

The average channel quality of the UE in the previous time period on the carrier 1 is 24, and the average occupied resource is 40. According to the protocol, the average number of bits per scheduling in the UE in a time period is 21384 bits, and the UE is in the The number of scheduled times in the previous time period on carrier 1 is 10, and the number of scheduled times in the time period is converted to 10*2=20. The average number of times the UE is on the carrier 1 is obtained. The rate is 21384*20=427680 bits/s.

The average channel quality of the UE in the previous time period on the carrier 2 is 10, and the average occupied resource is 20, and according to the protocol, the average number of bits per scheduling in the UE in a time period is 3112 bits, and the UE is in the The number of scheduling times in the last time period on carrier 2 is 30, and the number of scheduling times in the time period is converted into the number of times the user in the 1s is 30*2=60, and the average of the UE on the carrier 2 is obtained. The rate is 3112*60=186720 bits/s.

Then, the ratio of the scheduling capability of the UE on carrier 1 and carrier 2 is: 427680:186720=2.29:1.

Step 3: When the UE has a data scheduling requirement, the rate resource is split according to the scheduling capability on different carriers. The result of the splitting is that the AMBR rate of the UE on carrier 1 is: 50*2.29/(2.29+1)=34.8 Mbits/s; the AMBR rate of the UE on carrier 2 is: 50*1/(2.29+1)= 15.2 Mbits/s.

Example 3: The UE initial access of the UE Index=10 activates two carriers, and the core network configures the AMBR rate of the UE to be 50 Mbits/s.

Step 2: The eNB determines the scheduling capability of different carriers in the previous time period, and the time period is 1 s;

The average channel quality of the UE in the previous time period on the carrier 1 is 10, and the average occupied resource is 40. According to the protocol, the average number of bits per scheduling in the UE in a time period is 6200 bits, and the UE is in the The number of scheduled statistics in the last time period on carrier 1 is 10, and the number of scheduled statistics in the rate splitting period is converted to 10 times in the 1s, and the average rate of the UE on the carrier 1 is obtained. It is 6200*10=62000bits/s.

The average channel quality of the UE in the previous time period on the carrier 2 is 10, and the average occupied resource is 20, according to the protocol, the average number of bits per scheduling in the time period of the UE is obtained. 3112 bits, the number of scheduling times that the UE counts in the last time period on the carrier 2 is 40 times, and the number of scheduling times in the rate splitting period is converted into 40 times in the 1s, and finally the UE is in the The average rate on carrier 2 is 3112*40=124480 bits/s.

Then, the ratio of the scheduling capability of the UE on carrier 1 and carrier 2 is 62000: 124480 = 1:2.

Step 3: In the next cycle, the AMBR rate of the UE is split according to the rate ratio of the different carriers. The split result is that the AMBR rate of the UE on the carrier 1 is: 50*1/(1+2)=16.7Mbits/ s; the AMBR rate of the UE on carrier 2 is: 50*2/(1+2)=33.3 Mbits/s.

Example 4: The initial access of the UE with UE Index=10 activates two carriers, and the AMBR rate configured by the core network for the UE is 50 Mbits/s.

Step 1: The eNB divides the rate resource between the two activated carriers;

Step 2: The eNB determines the scheduling capability of different carriers in the previous time period, and the time period is 200 ms.

The average channel quality of the UE in the previous time period on the carrier 1 is 10, and the average occupied resource is 40. According to the protocol, the average number of bits per scheduling in the UE in a time period is 6200 bits, and the UE is in the The number of scheduled statistics in the last time period on carrier 1 is 10, and the number of scheduled statistics in the rate splitting period is converted to 10*5=50 in 1s. The UE is finally obtained on the carrier 1. The average rate is 6200*50=310000 bits/s.

The average channel quality of the UE in the previous time period on carrier 2 is 10, and the average occupied resource is 20, and there is an average of 10 RB resources remaining on the carrier 2 in the statistical period. There are 5 scheduled UEs on the carrier in the statistical period. Then, the average occupied resource of the UE is updated to be: 20+10/5=22, according to the protocol, the average number of bits per scheduling of the user in the previous time period is 3496 bits, and the UE is on the carrier 2 last time. The number of scheduled statistics in the period is 40, and the number of scheduled statistics in the rate splitting period is converted to 40*5=200. The average rate of the UE on the carrier 2 is 3496*. 200=699200 bits/s.

Then, the ratio of the scheduling capability of the UE on carrier 1 and carrier 2 is: 310000: 699200 = 1: 2.26.

Embodiment 2:

A second embodiment of the present invention provides a rate splitting apparatus, as shown in FIG. 3, which is a structural intent of a rate splitting apparatus according to an embodiment of the present invention. The rate splitting apparatus 10 provided in this embodiment includes:

The scheduling capability determining module 11 is configured to: determine scheduling capabilities on different cells/carriers in the last time or time period;

The rate resource splitting module 12 is configured to: when the UE has a data scheduling requirement or a next time period, determine a scheduling capability split rate resource on a different cell/carrier determined by the scheduling capability determining module 11.

Optionally, as shown in FIG. 4, another structure of the rate splitting device according to the embodiment of the present invention is shown. The apparatus shown in FIG. 4 may further include a rate resource initial splitting module 13 configured to: set the rate resource in a fixed ratio before the scheduling capability determining module 11 determines the scheduling capability on different cells/carriers in the last time or time period. Split between different cells/carriers.

Optionally, the scheduling capability determining module 11 in this embodiment is configured to: determine a rate on the different cell/carrier in a last time or a time period; according to the different cell in the last time or time period/ The rate on the carrier determines the ratio of the rates on the different cells/carriers.

Optionally, the scheduling capability determining module 11 in this embodiment determines a specific manner of the rate on the different cell/carrier in the last time or time period, and is configured to determine, according to the channel quality, the occupied resources, and the scheduling times. The rate on different cells/carriers.

Embodiment 3:

The third embodiment of the present invention provides a rate splitting evolved node, as shown in FIG. 5, which is a schematic structural diagram of an evolved node according to an embodiment of the present invention. The evolved node 100 provided in this embodiment includes the apparatus 10 for rate splitting in any of the above embodiments.

From the above description, when the UE accesses the PCC or the Pcell, and the SCC or the Scell is also activated, the eNB first splits the rate resource between different cells/carriers in a fixed ratio, and then determines the last time or time period. The scheduling capability on different cells/carriers within the UE, and finally the eNB splits the rate resources according to the determined scheduling capabilities on different cells/carriers during the data scheduling requirement of the UE or the next time period.

The method, the device and the evolved node disclosed in the present invention are used to fill the gap in the domain splitting technology under the carrier aggregation function, fully utilize the resources of different carriers or cells, and reduce the waste of carrier or cell resources. Maximize the user's scheduling rate and business experience.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The eNB in the embodiment of the present invention determines the scheduling capability on different cells/carriers in the previous time or time period, and according to the determined scheduling capability on different cells/carriers in the data scheduling requirement or the next time period of the UE. The rate-dividing resource fills the technical gap in the field of the rate splitting technology in the carrier aggregation function, fully utilizes the resources of different carriers or cells, reduces the waste of carrier or cell resources, and maximizes the scheduling rate and service experience of the user.

Claims

A method for rate splitting is applied to a carrier aggregation technology, and the method includes:

The evolved node eNB determines scheduling capabilities on different cells/carriers in the previous time or time period;

The eNB splits the rate resource according to the scheduling capability on the different cell/carrier in the user equipment UE having the data scheduling requirement or the next time period.
The method according to claim 1, wherein before the eNB determines the scheduling capability on different cells/carriers in the last time or time period, the method further includes:

The eNB splits the rate resources between the different cells/carriers in a fixed ratio.
The method according to claim 1, wherein the eNB determines scheduling capabilities on different cells/carriers in a last time or time period, including:

Determining, by the eNB, a rate on the different cell/carrier in a last time or time period;

The eNB determines a ratio of rates on the different cells/carriers according to rates on the different cells/carriers in a previous time or time period.
The method according to claim 3, wherein the eNB determines a rate on the different cell/carrier in a last time or time period, including:

The eNB determines a rate on the different cell/carrier according to channel quality, occupied resources, and number of times of scheduling.
A rate splitting device is applied to a carrier aggregation technology, the device comprising:

The scheduling capability determining module is configured to: determine scheduling capabilities on different cells/carriers in the last time or time period;

The rate resource splitting module is configured to: when the user equipment UE has a data scheduling requirement or a next time period, determine, according to the scheduling capability, a scheduling capability split rate resource on a different cell/carrier determined by the module.
The apparatus according to claim 5, further comprising: a rate resource initial splitting module, configured to set a fixed ratio before the scheduling capability determining module determines the scheduling capability on different cells/carriers in the last time or time period Rate resources are split between the different cells/carriers.
The apparatus according to claim 5, wherein said scheduling capability determining module is set And determining: a rate on the different cell/carrier in the last time or time period; determining a ratio of the rates on the different cell/carrier according to the rate on the different cell/carrier in the last time or time period.
The apparatus according to claim 7, wherein the scheduling capability determining module is configured to determine a rate on the different cell/carrier in a last time or time period, including:

The method is configured to determine a rate on the different cell/carrier according to channel quality, occupied resources, and number of times of scheduling.
An evolved node, the evolved node comprising the rate splitting device of any one of claims 5 to 8.