WO2011124014A1 - 确定和调整链路分段的目标分组延迟的方法、设备和节点 - Google Patents
确定和调整链路分段的目标分组延迟的方法、设备和节点 Download PDFInfo
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- WO2011124014A1 WO2011124014A1 PCT/CN2010/071564 CN2010071564W WO2011124014A1 WO 2011124014 A1 WO2011124014 A1 WO 2011124014A1 CN 2010071564 W CN2010071564 W CN 2010071564W WO 2011124014 A1 WO2011124014 A1 WO 2011124014A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
- H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/28—Flow control; Congestion control in relation to timing considerations
- H04L47/283—Flow control; Congestion control in relation to timing considerations in response to processing delays, e.g. caused by jitter or round trip time [RTT]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
Definitions
- the present invention relates to the field of relay technologies, and in particular, to a method, device and network node for determining target packet delay of each segment of a link and a method for adjusting target packet delay of a segment of a link , devices, and network nodes.
- operators can provide users with a variety of services, such as multimedia phones, mobile TV, online games, and the like.
- services such as multimedia phones, mobile TV, online games, and the like.
- Each of these services has its own characteristics, and different types of services have different performance requirements for performance such as bit rate and packet delay.
- a QoS guarantee mechanism for service levels for different QoS Class Identifiers is provided in the 3GPP specifications.
- the QCI is a scalar that can be pre-configured by the base station, and the QCI can serve as a reference for setting the packet forwarding process control parameters of the network node, wherein the packet forwarding process control parameters can be used for control, such as scheduling weights, admission thresholds, Queue management thresholds, link layer protocol configurations, and more.
- each service data stream is associated with one and only one QCI, and each QCI has a corresponding QoS requirement, such as priority, packet delay budget ( PDB), Packet Error Loss Rate (PELR).
- PDB packet delay budget
- PELR Packet Error Loss Rate
- Multi-hop relay technology was introduced in the 3rd Generation Partnership Project Subsequent Long Term Evolution (3GPP LTE-A).
- Multi-hop relay technology is a good technical solution for coverage expansion and throughput enhancement under relatively low capital expenditure (CapEX) and operating cost (OpEX), which has been accepted by LTE-A Rel-10 .
- CapEX capital expenditure
- OFEX operating cost
- data transmission between the user equipment and the base station is subject to forwarding by one or more relay stations.
- the present invention provides a technical solution for determining a target packet delay of each segment of a link for QoS guarantee of a multi-hop relay system such as 3GPP LTE-A.
- a method for determining a target packet delay for each segment of a link can include: collecting parameters affecting packet delay; and determining a score based on a relationship between a packet delay of each segment and an overall packet delay of the link, based on collected parameters and overall requirements for packet delay of the link The target grouping delay of the segment.
- determining the target packet delay of each segment may include: targeting the achieveability of the target packet delay of each segment and maximizing the utilization of the radio resource, with the foregoing relationship, overall requirements, and collection.
- the parameters are constraints to perform an optimization operation to obtain the target packet delay for each segment.
- determining the target packet delay for each segment is performed at one of the network nodes associated with the link. And in this embodiment, the method may further include: transmitting the determined target packet delay to each network node associated with the link, so that each network node performs a scheduling operation based on the target packet delay. In another embodiment in accordance with the invention, determining the target packet delay for each segment is performed at each of the network nodes associated with the link based on the same rules. In an implementation manner, the method may further include: acquiring, at each network node, a parameter related to the packet delay that is related to each other; and transmitting, to other network nodes related to the link, the acquired parameter that affects the packet delay, so as to share the parameter. .
- the foregoing parameter may be a statistical parameter based on a period of time, and may be one of a network deployment characteristic parameter, a user service characteristic parameter, a system parameter configuration characteristic parameter, and a distribution characteristic parameter of the user equipment. Or a variety.
- the method of at least may further comprise triggering a re-determination of a target packet delay for each segment in response to the target packet delay of the segment being unsatisfiable.
- the method may further include: acquiring packet delay related information of the previous segment; determining an actual target packet delay of the segment based on the packet delay related information and the target packet delay of the segment .
- packet delay related information is embedded in packets transmitted on the previous segment.
- the packet delay related information includes an actual packet delay of a previous segment; an actual packet delay of the previous segment and a target packet delay; an actual packet delay and target of the previous segment The difference in packet delay; and one or more of the automatic retransmission request configuration parameters.
- a method for adjusting a target packet delay for each segment of a link is provided.
- the method is used to dynamically adjust or correct the target packet delay of the segment during the execution of the data transmission in order to obtain a more stringent packet delay guarantee.
- the method can include obtaining packet delay related information for a previous segment of the segment; determining an actual target packet delay for the segment based on the packet delay related information and the target packet delay of the segment. Additionally, the method can further include: transmitting, to the subsequent network node, packet delay related information associated with the segment for use in determining an actual target packet delay for the subsequent segment.
- a device with a target packet delay may include: a parameter collection device configured to collect parameters affecting packet delay; and a target determining device configured to determine a relationship between a packet delay of each segment and an overall packet delay of the link, based on the collected parameters And the overall requirement for packet delay for the link, determining the target packet delay for each segment.
- an apparatus for adjusting a target packet delay of each segment of a link may include: information acquiring means configured to acquire packet delay related information of a previous segment of the segment; and actual target determining means configured to determine, based on the packet delay related information and the target packet delay of the segment The actual target packet delay of the i-segment segment.
- the device may further include: an information sending device configured to send, to the subsequent network node, packet delay related information related to the forgoing segment to be used when determining the actual target packet delay of the subsequent segment.
- a network node comprising the apparatus according to the third aspect of the invention.
- a network node comprising the apparatus according to the fourth aspect of the invention.
- a seventh aspect of the invention there is also provided a computer program product comprising computer program code for performing the method according to the first aspect of the invention when the code is loaded into the computer.
- a multi-hop relay system is provided with a solution for determining and adjusting the target packet delay of each segment of the link, by which the overall packet delay of the multi-hop relay system can be guaranteed. And in a preferred embodiment in accordance with the present invention, the target packet delay can be dynamically corrected based on the packet delay information of the previous segment during data transmission, thereby further improving performance.
- the technical solution of the present invention has a very large scalability and can be easily extended to support a relay system having any hop count.
- the technical solution provided by the present invention aims to optimize QoS control within the scope of a Radio Access Network (RAN), which is directed to the core.
- RAN Radio Access Network
- the heart network (CN) is transparent and does not have any effect on the CN.
- the current 3GPP LTE-A specification is very smallly modified, and thus has good backward compatibility, and is also transparent to the LTE Rel-8/9/10 user equipment, and will not It has an impact on it.
- Figure la shows a schematic diagram of an exemplary segmentation configuration of a two-hop relay system in accordance with the present invention
- Figure lb and Figure lc illustrate schematic diagrams of exemplary motion segmentation adjustments of a two-hop relay system in accordance with the present invention
- FIG. 2 shows a flow chart of a method for determining a target packet delay for each segment of a link in accordance with one embodiment of the present invention
- FIG. 3 illustrates a method for adjusting a target packet delay of a link segment in accordance with an embodiment of the present invention
- FIG. 4 is a diagram showing the operation of a downlink QoS guarantee of a multi-hop relay system according to an embodiment of the present invention
- FIG. 5 is a diagram showing the operation of an uplink QoS guarantee of a multi-hop relay system according to an embodiment of the present invention
- FIG. 6 shows a block diagram of an apparatus for determining a target packet delay for each segment of a link in accordance with an embodiment of the present invention
- Figure 7 is a block diagram showing an apparatus for determining a target packet delay for each segment of a link in accordance with another embodiment of the present invention.
- FIG. 8 is a block diagram showing an apparatus for adjusting a target packet delay of a link segment according to still another embodiment of the present invention. detailed description Hereinafter, methods, apparatuses, and network nodes for determining and adjusting target packet delays of respective segments of a link according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
- FIG. 1a a two-hop relay system is illustrated that includes a backhaul link eNB-RN and an access link RN-UE.
- the backhaul link and the access link can be regarded as two links connected in series. Therefore, based on the nature of the i-thin PDB index, it can be determined that the overall packet delay tsum of the entire link and the packet delays of the backhaul link and the access link ⁇ and t 2 satisfy the following relationship:
- parameters affecting each segment PDB related to each segment may also be collected before service initialization, wherein the parameters affecting the delay of the backhaul link packet are generally represented by P1, which affects the delay of the access link packet.
- P1 parameters affecting the delay of the backhaul link packet
- P2 parameters affecting the delay of the access link packet
- the target packet delay for each link that is, the PDB for each segment
- the PDB for each segment can be determined based on the relationship, parameters P 1 and P2, and the overall requirements for the link PDB. Further, coordination between the eNB and the RN can be performed based on the determined PDB for each segment to implement its PDB on each link, thereby ensuring end-to-end QoS requirements.
- the present invention further contemplates dynamically adjusting the target packet delay in actual transmission.
- the packet delay case of the previous segment can be considered, and the actual PDB is determined for the current segment based on the case of the previous segment to provide further improvements to the PDB guarantee.
- Figure lb and Figure 1c show a schematic diagram of an exemplary dynamic segmentation adjustment of a two-hop relay system in accordance with the present invention.
- the difference A of the actual packet delay of the previous segment with its target packet delay can be obtained, and the actual target packet delay of the next segment is determined based on the difference.
- FIG. 1b it shows that the data is received in advance as compared with the predetermined PDB.
- w represents the overall requirement for the PDB of the link; represents the packet delay of the first segment; represents the number of segments of the overall link or the number of hops of the relay system; ⁇ . represents the parameters affecting the segment.
- embodiments of the present invention provide a technical solution for determining and adjusting target packet delays for respective segments of a link.
- a technical solution for determining a target packet delay of each segment of a link according to the present invention will be described first with reference to FIG. 2 shows a flow chart of a method for determining a target packet delay for each segment of a link in accordance with an embodiment of the present invention.
- step S201 parameters affecting the packet delay are collected. This is the network deployment feature parameter, the user's service feature parameter, the system parameter configuration feature parameter, and the user device's distribution feature parameter.
- the network deployment characteristic parameter may be an error rate of each segment, such as a bit error rate, a bit error rate, a symbol error rate, a packet error rate, a packet error loss rate, or may be an interference condition of each segment.
- the user's service characteristic parameters may be the average throughput of each segment, the efficiency of wireless resource usage, and the like.
- the system parameter configuration characteristic parameter may be the number of subframes allocated for transmission to each segment.
- the configuration of the subframes for each link affects the HARQ acknowledgement and the negative acknowledgement feedback, which has a certain impact on the time required for retransmission. For example, the fewer subframes allocated to the backhaul link, the time interval for data retransmission caused by erroneous transmission increases, and the larger the PDB required for the backhaul link; conversely, the more subframes allocated to the backhaul link More, the smaller the PDB required for the backhaul link.
- the distribution characteristic parameter of the user equipment may be a distribution status of the user equipment.
- the distribution of user equipment refers to how many user equipments and how much data is directly served by the base station, and how many user equipments and how much data volume needs to be served by the relay station under the indirect support of the base station. The more user equipment served by the relay station, the larger the amount of data, the larger the PDB required on the backhaul link. Therefore, in order to guarantee the PDB, the PDB of the access link and the backhaul link needs to be carefully designed.
- step S202 based on the relationship between the packet delay of each segment and the overall packet delay of the link, the target packet delay of each segment is determined based on the collected parameters and the overall requirements for the packet delay of the link.
- the achievability of the target packet delay and the maximum utilization of the radio resources of each segment may be targeted, with the aforementioned relationship, the overall requirement, and the collected parameters as constraints.
- the specific optimization operation can be designed for the situation of the system, and those skilled in the art can fully realize the optimization operation according to the teachings herein and the technical knowledge they have mastered. Therefore, in order to make the present invention clearer, the details herein will not be described again.
- the actual packet status of each segment can be considered, and the target packet delay that can be achieved can be set for it. This way of determining the target packet delay is more efficient.
- the above parameters that can affect the packet delay budget are preferably based on a statistical value over a longer period of time, ie based on an average over a period of time. This means that the semi-static configuration process is performed for each segment of the link, ie, not with the change of the above parameters.
- the configuration is performed in a state where it is not maintained after the configuration is performed based on the above parameters (this will be described in further detail below).
- the above determined process may be performed at one of the various network nodes associated with the link, for example at the e NB, or at any one of the relay nodes in a centralized manner. Therefore, after determining the target packet delay for each segment, the target packet delay may be further sent to each of the network nodes associated with the link, so that each network node performs an appropriate scheduling operation based on the target packet delay.
- the above-described operation of determining the target packet delay may be separately performed at each of the network nodes associated with the link.
- each network node needs to perform the target packet delay determination operation based on the same rule.
- parameter sharing is required between the various network nodes.
- parameters associated with each other that affect the packet delay budget can be obtained at respective network nodes, said parameters being the parameters described above, which can be obtained by measurement and/or calculation. The acquired parameters affecting the packet delay budget can then be sent to other network nodes associated with the link to share these parameters.
- each network node can determine the same target packet delay for each segment based on the same rules and the same parameters.
- each network node only needs to perform link adaptation and scheduling operations based on its own target packet delay without having to send the determined other target packet delays to other network nodes.
- the centralized implementation is different from the distributed based implementation in that the centralized implementation is characterized by centralized collection of parameters, centralized determination of target packet delay, and determined target values can be sent to other network nodes for sharing.
- a distributed-based implementation is characterized by parameter sharing, which performs a determination process based on the same rules.
- the network node responsible for centrally determining the target value collects parameters from other network nodes, and according to the distributed implementation, each network node sends each acquired parameter to each other. This allows all relevant network nodes to get the parameters needed to perform the determination.
- Each network node can be based on ammonium after obtaining a target packet delay for itself
- the target packet is delayed, and the appropriate scheduling operation is performed to achieve the target packet delay by performing appropriate scheduling in the time domain, the air domain, and the frequency domain.
- the target packet delay can be achieved according to the target packet delay, using appropriate modulation and coding, power allocation/control, HARQ mechanism, ARQ mechanism, frequency selective scheduling, spatial diversity techniques, and the like.
- Performing link adaptation and scheduling operations to achieve target packet delay is a technique known in the art and will not be further described herein.
- the above-described operation of determining the target packet delay of each segment may also be referred to as a process of configuring the packet delay of the segment.
- the inventors have also noticed the following cases: In practical applications, the state of link conditions, system parameter configuration, network deployment, and the like are all dynamically changed.
- the initially determined target packet delay may not be able to adapt to the new situation after a period of time, and some network nodes may not be able to achieve the target packet delay specified for it anyway, performing link adaptation and scheduling operations.
- step S203 in response to the target packet delay of the segment being unsatisfiable, triggering the re-determination of each segment of the link Target packet delay.
- the actual packet delay of the relevant segment is measured at each network node, and if it is found that the target packet delay cannot be satisfied within a period of time, a message may be sent to determine the target packet delay for each segment.
- Network node requesting reconfiguration. After receiving the reconfiguration request, the network node can re-collect the required parameters and re-determine the appropriate target packet delay for each segment.
- each network node may also periodically send parameters that determine the packet delay to the network node that determines the target packet delay for each segment, so that the network node determines whether the configuration needs to be re-executed.
- the target packet delay of each segment may be re-determined based on the received parameters.
- the technical solution provided by the preferred embodiment is a process of performing semi-static configuration for each segment of a link.
- the process and the change with the above parameters The dynamic configuration mode of the configuration execution is different from the static configuration mode that maintains this configuration after the configuration is executed. It is a technical solution for performing reconfiguration based on observation for a period of time. Therefore, the configuration method can reduce various overheads required for dynamic configuration, and at the same time overcome the disadvantage that the static configuration cannot adapt to the change of the situation.
- the present invention also provides a method for dynamically adjusting or correcting the target delay budget during data transmission.
- each network node can adjust or correct the target packet delay of the subsequent segment based on the packet delay related information of the previous segment.
- FIG. 3 is a flow chart showing a method for dynamically adjusting a target packet delay according to an embodiment of the present invention.
- the packet delay related information of the previous segment may be acquired in step S310.
- the packet delay related information may be information related to the actual packet delay of the previous segment, such as the difference between the actual packet delay and the target packet delay described above.
- the actual packet delay of the previous segment and the target packet delay may be the actual packet delay.
- the packet delay related information may relate to: a time at which the data packet is held in the queue of the network node since receiving the data packet; a difference between the network node and the agreed target packet delay for the time before and after the scheduling of the correctly received data packet Value and so on.
- the packet delay related information may be included in the data packet transmitted on the previous segment. For example, it can be placed in the first byte of the payload (Radio Link Control Layer Protocol Data Unit, RLC-PDU) transmitted on the previous segment.
- RLC-PDU Radio Link Control Layer Protocol Data Unit
- the UE device does not actually need to perform the work of transmitting the packet delay related information, because the RN can obtain the packet delay related information by calculation according to the information it knows, for example, the RN can be based on the user equipment.
- the time at which the resource is requested to be allocated and, in addition, the read packet delay related information may further be related to the automatic repeat request configuration parameter, such as the HARQ or ARQ configured wireless parameters.
- the actual target packet delay of the segment may be determined based on the packet delay related information and the target packet delay of the segment.
- emergency scheduling can be performed.
- the scheduling priority can be increased based on the overall situation, such as placing the corresponding data packet to the previous position of the queue that follows the first-in, first-out principle, rather than placing it directly at the end of the queue.
- the read target value can still be achieved by ensuring that the packet delay budget of the current segment is reduced.
- the target packet delay for each segment is determined for different services.
- the target packet delay of each segment may be different because of the parameters and parameters affecting the uplink packet delay.
- the parameters that affect the packet delay of the downlink may be different. Therefore, the determination operation of the target packet delay of each segment is performed separately for the uplink and the downlink.
- FIGS. 4 and 5 respectively illustrate an operation of downlink and uplink QoS guarantees for a three-hop relay system in accordance with an embodiment of the present invention. Intention.
- the PDB of the entire link is guaranteed by outer loop control and inner loop control to meet QoS requirements.
- the outer loop control is illustrated in FIG. 4 and FIG. 5 by a one-dot chain line, which is primarily responsible for performing service initialization and determining the target packet delay for each link (C410 and C510) based on the method described in the foregoing of the present invention. And reconfiguring the target packet delay for each link in response to relatively long-term measurements and reports from the relevant network node (eg, base station eNB or relay node RN), ie, re-determining the target packet delay (C41 1 and C51 1).
- the relevant network node eg, base station eNB or relay node RN
- the inner loop control (C420 to C429, and C520 to C530) is shown in solid lines in Figures 4 and 5, which is responsible for performing some link adaptation and suitable scheduling, for example, adaptive modulation and coding, power allocation / Control, HARQ, ARQ, frequency selective scheduling, spatial diversity techniques, etc., to achieve target packet delay, thereby ensuring the overall PDB of the entire link.
- some link adaptation and suitable scheduling for example, adaptive modulation and coding, power allocation / Control, HARQ, ARQ, frequency selective scheduling, spatial diversity techniques, etc.
- the target packet delay can be adjusted based on the packet delay related information of the previous segment.
- each segment (access link) is determined according to the method described above in connection with FIG. And backhaul link) Target packet delay (ie PDB) for the downlink.
- PDB Target packet delay
- the eNB performs a suitable scheduling operation based on the downlink target packet delay between the eNB and the RN 2, and performs service data transmission at C421.
- the packet delay information related to the segment may also be included in the data packet and sent to K2.
- the packet delay related information may be the information described above, which may be included in a payload (RLC SDU), for example, the first byte of the payload (RLC SDU) may be used to indicate packet delay related information.
- the eNB can calculate the average packet delay at C422 and measure the parameters that affect the packet delay, which are used for possible reconfiguration in the future.
- the RN2 may acquire the packet delay related information in the data packet at C423, and determine the actual target packet delay based on the packet delay related information and the target packet delay according to the method described above with reference to FIG. 3, and according to The determined actual target packet delay is used to perform the scheduling.
- RN2 sends the service data and the packet delay related information to RN1 at C424.
- RN2 performs an average packet delay calculation and a measurement of parameters affecting the packet delay at C425.
- RN1 determines the actual target packet delay of the downlink access link based on the packet delay related information and the target packet delay in the received packet data in step C426, and performs scheduling.
- the service data transmission is then performed at C427, and the service data is transmitted to the user equipment UE. Since this is the access link to the user equipment, there is no other link that needs to dynamically adjust the packet delay, so there is no need to transmit the packet delay related parameters.
- RN1 calculates the average packet delay and measures the parameters affecting the packet delay in step C428.
- the measured parameters and the calculated average packet delay may be reported or exchanged between R 1, RN 2 and the eNB after completion of a downlink data transmission, or at any other appropriate time, using event-triggered or periodic reporting. To determine if a reconfiguration is required.
- the packet delay budget for each segment can be re-determined based on the new parameters in step C41 1 .
- service initialization is first performed at C510 to determine a target packet delay for each segment uplink. Determining the process of uplink target packet delay and determining the downlink target score The process of group delay is completely similar, but is performed based on different parameters.
- the resource request and allocation process (C520) is first performed between the UE and the RN1 to obtain the radio resources and the like required for transmitting the service data.
- the UE transmits a Buffer Status Report (BSR) to the RN 1, for example, at the granularity of the logical channel group to request radio resources for traffic transmission. If the UE has not obtained the uplink resource for the BSR, the scheduling request may be triggered before the BSR is sent, and the RN1 is requested to allocate resources for the BSR.
- BSR Buffer Status Report
- the RN1 After receiving the BSR, the RN1 performs scheduling, allocates uplink access link resources for transmitting the service data to the UE to satisfy the target packet delay of the uplink access link, and indicates to the UE about the modulation and coding mechanism and the allocated wireless within a predetermined time.
- Resource refers to information.
- the information indicated to the UE may not involve a logical channel, but rather the UE decides which logical channel to use for transmission.
- the UE selects an appropriate logical channel for transmission of service data in accordance with the instruction of RN1 at C521.
- the RN1 can obtain the packet delay related information of the uplink access link.
- the packet delay related information is not transmitted by the previous network node, but the RN derives the time from when the UE sends the BSR to when it correctly receives the service data. In other words, it can be calculated to determine how many PDBs the uplink access link actually uses, and the amount of difference between the actual packet delay and the predetermined target packet delay.
- the actual target packet delay that can be used by the uplink between RN1 and RN2 can be determined.
- the RN1 then performs a scheduling request (C522) based on the read actual target packet delay to satisfy the guaranteed target packet delay.
- a resource request and allocation process (C523) will be performed between RN1 and RN2.
- the process of forgitting is similar to the resource request and allocation process between the UE and RN1 and will not be described in detail here.
- traffic transmission is performed at C524, and similar to the downlink transmission, packet delay related information relating to the uplink between RN1 and RN2 is included in the packet and transmitted to RN2.
- the packet delay related information is similar to the packet delay related information transmitted in the downlink, and may include, in, for example, a payload (RLC SDU), using a first byte of a payload (RLC SDU) to indicate packet delay related information.
- RN1 can calculate the packet delay average and measure the packet delay in C525. Parameters, these parameters are used for possible PDB reconfiguration in the future.
- the actual target packet delay may be determined based on the packet delay related information included in the service data and the uplink target packet delay between the RN2 and the eNB at C526. And delay the execution of the scheduling request based on the actual target packet.
- a resource request and allocation process similar to C520 and C523 (C527) is then performed between RN2 and the eNB. Thereafter, the transmission of the business data is performed at C528. Since it is the last hop, there is no need to send packet delay related information to the network node eNB.
- the average packet delay can be calculated at C529 and the parameters affecting the packet delay can be measured.
- the foregoing BSR may adopt a multi-level mechanism for indicating different urgency levels of scheduling, for example, three levels, that is, a 30 ms level, a 60 ms level, and a 90 ms level.
- Different BSR levels can be specified for different services.
- the upper-level network nodes (such as the eNB and the RN) can allocate suitable radio resources and implement more efficient uplink scheduling for the lower-level network node (RN) or user equipment (UE) according to the BSR level.
- the technical solution for dynamically adjusting the target packet delay of the segment based on the packet delay related information needs to occupy a certain transmission resource, and thus can be performed for a service that is demanding for packet delay.
- the operation of the group delay and the measured parameters is performed after the end of one transmission, but the present invention is not limited thereto. Instead, the time interval for reporting/swapping operations can be determined based on actual conditions. This is preferably based on a longer period of time, which can significantly reduce overhead and can also be adapted to changes in the situation.
- a multi-hop relay system is provided with a technology for determining and adjusting a packet delay budget of each segment of a link, thereby providing a packet delay budget guarantee for the multi-hop relay system.
- suitable target packet delays are determined for each segment by outer loop control and can be further adjusted by semi-static configuration.
- demanding services for packet delay budgets can further improve performance by dynamically adjusting target packet delays within the inner loop control, providing a more adequate PDB guarantee.
- the technical solution of the present invention has a very large scalability and can be easily extended to support a relay system having any hop count.
- the technical solution provided by the present invention aims to optimize QoS control within the scope of the Radio Access Network (RAN), which is transparent to the core network (CN) and does not have any impact on the CN.
- RAN Radio Access Network
- the current 3GPP LTE-A specification is very smallly modified, and thus has good backward compatibility, and is also transparent to the LTE Rel-8/9/10 user equipment, and will not be correct. It has any effect.
- the present invention also provides an apparatus for determining a target packet delay for each segment of a link.
- description will be made with reference to Figs. 6 to 8.
- Figure 6 illustrates an apparatus 600 for determining a target packet delay for each segment of a link, in accordance with one embodiment of the present invention.
- the apparatus 600 can include: a parameter collection device 601 configured to collect parameters affecting packet delays; and a target determining device 602 configured to determine a relationship between a packet delay of each segment and an overall packet delay of the link, based on The collected parameters and the overall requirements for packet delay for the link determine the target packet delay for each segment.
- the target determining means 602 can be configured to target the achieveability of the target packet delay and the maximum utilization of the radio resources of the respective segments, in accordance with the aforementioned relationship, overall requirements, and collection.
- the parameters are constrained,
- the optimization operation is performed to obtain the target packet delay of each segment.
- the target determining means 602 can be configured to determine a target packet delay for each segment of the link for the uplink and the downlink, respectively.
- the iHai target determining means 602 can be configured to determine a target packet delay for each segment of the link at one of the network nodes associated with the link.
- the device 600 may further include a target value transmitting device 603 (shown in a dashed box indicating an optional device) configured to send the determined target packet delay to each network node associated with the link, In order for each network node to perform link adaptation and scheduling operations based on the target packet delay.
- the apparatus 600 may further include: a re-determination triggering device 604 (shown in dashed box indicating an optional device) configured to delay a target packet in response to the segmentation Unsatisfied, the target determining means 601 is triggered to redetermine the target packet delay for each segment.
- a re-determination triggering device 604 shown in dashed box indicating an optional device configured to delay a target packet in response to the segmentation Unsatisfied, the target determining means 601 is triggered to redetermine the target packet delay for each segment.
- the collected parameters are based on statistical parameters of a period of time, and the parameters may be one or more of the following: network deployment characteristic parameters; user service characteristic parameters; system parameter configuration characteristic parameters ; and the distribution characteristics of the user equipment.
- the apparatus 600 may further comprise means for adjusting the segmentation of the link, the target packet delay budget.
- the device will be described in detail below with reference to FIG.
- FIG. 7 illustrates an apparatus for determining a target packet delay for each segment of a link in accordance with another embodiment of the present invention.
- the device 700 may include a parameter collection device 701, a target determination device 702, and an optional re-determination trigger device 704, which respectively correspond to the parameter collection device 601 and the target determination device 602 shown in FIG.
- the triggering device 604 is determined.
- Figure 6 for a similar device to Figure 6 and related embodiments, reference is made to Figure 6 for the sake of clarity, and no further details are provided herein for clarity.
- the target determining device 701 shown in FIG. 7 can be configured.
- a target packet delay for each segment is determined based on the same rules at respective network nodes associated with the link.
- the device may further include: a parameter obtaining means 705 configured to acquire, at each network node, a parameter related to each of the network delays affecting the packet delay; and a parameter sending means 706 configured to be associated with the link The other network nodes send the acquired parameters affecting the packet delay in order to share the parameters.
- Figure 8 also shows an apparatus for adjusting the target packet delay of each segment of a link in accordance with the present invention.
- the device 800 may include: an information acquiring device 801 configured to acquire packet delay related information of a previous segment; an actual target determining device 802 configured to perform scheduling based on packet delay related information and segmentation Target packet delay, determining the actual target packet delay for the segment.
- the apparatus 800 may further include: an information sending apparatus 803 configured to send, to a subsequent network node, packet delay related information related to the segment, to determine the next segment.
- the actual target packet is used when delayed.
- the packet delay related information can be embedded in the packet transmitted on the previous segment.
- the packet delay related information includes an actual packet delay of a previous segment; an actual packet delay of the previous segment and a target packet delay; an actual packet delay and target of the previous segment The difference in packet delay; and one or more of the automatic retransmission request configuration parameters.
- the present invention may also provide a network node comprising the apparatus of any of the embodiments described with reference to Figures 6-8.
- the network node can be a relay node or a base station.
- the present invention can also be implemented by a computer program.
- the present invention also provides a computer program product comprising computer program code for performing a method for determining a target packet delay for each segment of a link according to the present invention when the code is loaded into a computer .
- a computer program product comprising computer program code for performing the method of the present invention for adjusting a target packet delay of a segment of a link when the code is loaded into a computer.
- embodiments of the invention may be implemented in software, hardware or a combination of software and hardware.
- the hardware portion can be implemented using dedicated logic; the software portion can be stored in memory and executed by a suitable instruction execution system, such as a microprocessor or dedicated design hardware.
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- Data Exchanges In Wide-Area Networks (AREA)
Description
Claims
Priority Applications (8)
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KR1020127028212A KR101457347B1 (ko) | 2010-04-06 | 2010-04-06 | 링크 서브섹션들의 목표 패킷 지연을 결정하고 조정하기 위한 방법, 장치 및 노드 |
PCT/CN2010/071564 WO2011124014A1 (zh) | 2010-04-06 | 2010-04-06 | 确定和调整链路分段的目标分组延迟的方法、设备和节点 |
EP10849251.3A EP2557837A4 (en) | 2010-04-06 | 2010-04-06 | METHOD, EQUIPMENT AND NODE FOR DEFINING AND ADJUSTING TARGET PACKAGE DELAYS OF CONNECTION SUB-SECTIONS |
JP2013502978A JP5667285B2 (ja) | 2010-04-06 | 2010-04-06 | リンク・セグメントについてのターゲット・パケット遅延を決定するための、また調整するための方法、装置およびノード |
BR112012025353A BR112012025353A2 (pt) | 2010-04-06 | 2010-04-06 | método, aparelho e nó para determinar e ajustar o atraso de pacote alvo de um segmento de ligação |
CN201080064957.2A CN102783205B (zh) | 2010-04-06 | 2010-04-06 | 确定和调整链路分段的目标分组延迟的方法、设备和节点 |
US13/639,157 US20130028127A1 (en) | 2010-04-06 | 2010-04-06 | Methods, apparatuses and nodes for determining and adjusting target packet delay of a link segment |
TW100110984A TWI544818B (zh) | 2010-04-06 | 2011-03-30 | Methods and devices for determining and adjusting the target packet delay for link segments |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014239272A (ja) * | 2013-06-06 | 2014-12-18 | 京セラ株式会社 | 移動体通信システムおよび基地局 |
CN105849571A (zh) * | 2013-06-24 | 2016-08-10 | Zte维创通讯公司 | 用于调整对时间要求严格的功能的最大持续时间的方法及系统 |
US9961695B2 (en) | 2012-11-05 | 2018-05-01 | Telefonaktiebolaget L M Ericsson (Publ) | Scheduling in mobile communications systems |
WO2023109743A1 (zh) * | 2021-12-17 | 2023-06-22 | 华为技术有限公司 | 传输数据的方法和通信装置 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5441172B2 (ja) * | 2010-05-19 | 2014-03-12 | 日本電気株式会社 | 無線ネットワーク中継装置及び無線ネットワーク中継装置の変調方法並びにコンピュータプログラム |
US8948007B2 (en) * | 2011-06-13 | 2015-02-03 | Verizon Patent And Licensing Inc. | Interoperable quality of service pre-negotiation |
CN103369559A (zh) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | 获取时延的最小化路测方法及装置 |
US9276873B2 (en) * | 2012-11-23 | 2016-03-01 | Verizon Patent And Licensing Inc. | Time-based QoS scheduling of network traffic |
US10153816B2 (en) * | 2013-05-09 | 2018-12-11 | Intel IP Corporation | Small data communications |
CN104602356B (zh) * | 2013-10-31 | 2018-03-27 | 普天信息技术有限公司 | 多通道无线通信系统上行数据传输方法及设备 |
TWI528755B (zh) | 2013-12-06 | 2016-04-01 | 財團法人工業技術研究院 | 軟體定義網路中用於延遲量測之網路控制器、延遲量測系統及延遲量測方法 |
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US10587373B1 (en) * | 2016-12-08 | 2020-03-10 | Sprint Spectrum L.P. | Controlling transmission based on acknowledgement delay |
US20180279319A1 (en) * | 2017-03-23 | 2018-09-27 | Nokia Technologies Oy | Dynamic provisioning of quality of service for end-to-end quality of service control in device-to-device communication |
CN112470432A (zh) * | 2018-07-26 | 2021-03-09 | 联想(新加坡)私人有限公司 | 监视数据连接的qos参数 |
WO2020088529A1 (en) * | 2018-10-30 | 2020-05-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for quality of service management |
KR20220099975A (ko) * | 2019-11-15 | 2022-07-14 | 삼성전자주식회사 | 정보 송신 방법 및 장치 |
WO2022028873A1 (en) * | 2020-08-04 | 2022-02-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Mechanism for adapting a packet delay budget |
CN114071564B (zh) * | 2020-08-05 | 2024-04-09 | 大唐移动通信设备有限公司 | 用户终端与网络进行通信的方法、终端、网络设备及装置 |
CN115473825A (zh) * | 2022-09-14 | 2022-12-13 | 中国电信股份有限公司 | 业务服务等级协议保障方法和系统、控制器和存储介质 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1943267A (zh) * | 2004-04-13 | 2007-04-04 | 西门子公司 | 确定自适应路径光网络中的延迟的方法 |
CN101166073A (zh) * | 2006-10-17 | 2008-04-23 | 株式会社Ntt都科摩 | 一种应用于多跳通信系统的协作分集通信方法 |
US20100061264A1 (en) * | 2008-09-11 | 2010-03-11 | Verizon Business Network Services Inc. | Method and system for identifying network paths |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1122921B1 (en) * | 2000-02-02 | 2005-11-30 | Telefonaktiebolaget LM Ericsson (publ) | Circuit and method for providing a digital data signal with pre-distortion |
US7978673B1 (en) * | 2000-12-29 | 2011-07-12 | Intel Corporation | Channel allocation based on random plus planned processes |
JP2008167141A (ja) * | 2006-12-28 | 2008-07-17 | Nec Corp | データ伝送方法および装置、それを用いた通信システム |
US8149726B2 (en) * | 2007-01-04 | 2012-04-03 | Industrial Technology Research Institute | Wireless communication system and method |
CN101355497B (zh) * | 2007-04-06 | 2013-08-21 | 中兴通讯美国公司 | 用于无线中继网络中的多播/广播业务的数据同步 |
KR101400753B1 (ko) * | 2008-01-02 | 2014-05-29 | 연세대학교 산학협력단 | 서비스 패킷의 서비스 품질 레벨에 따라 동작하는 중계기및 중계기의 동작 방법 |
US7978796B2 (en) * | 2008-07-31 | 2011-07-12 | Freescale Semiconductor, Inc. | Recovering symbols in a communication receiver |
JP2010199657A (ja) * | 2009-02-23 | 2010-09-09 | Oki Electric Ind Co Ltd | 時分割多重符号化送信信号生成方法及び時分割多重符号化送信信号生成装置 |
-
2010
- 2010-04-06 EP EP10849251.3A patent/EP2557837A4/en not_active Withdrawn
- 2010-04-06 WO PCT/CN2010/071564 patent/WO2011124014A1/zh active Application Filing
- 2010-04-06 JP JP2013502978A patent/JP5667285B2/ja not_active Expired - Fee Related
- 2010-04-06 KR KR1020127028212A patent/KR101457347B1/ko active IP Right Grant
- 2010-04-06 CN CN201080064957.2A patent/CN102783205B/zh active Active
- 2010-04-06 US US13/639,157 patent/US20130028127A1/en not_active Abandoned
- 2010-04-06 BR BR112012025353A patent/BR112012025353A2/pt not_active Application Discontinuation
-
2011
- 2011-03-30 TW TW100110984A patent/TWI544818B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1943267A (zh) * | 2004-04-13 | 2007-04-04 | 西门子公司 | 确定自适应路径光网络中的延迟的方法 |
CN101166073A (zh) * | 2006-10-17 | 2008-04-23 | 株式会社Ntt都科摩 | 一种应用于多跳通信系统的协作分集通信方法 |
US20100061264A1 (en) * | 2008-09-11 | 2010-03-11 | Verizon Business Network Services Inc. | Method and system for identifying network paths |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9961695B2 (en) | 2012-11-05 | 2018-05-01 | Telefonaktiebolaget L M Ericsson (Publ) | Scheduling in mobile communications systems |
EP2915361B1 (en) * | 2012-11-05 | 2018-10-24 | Telefonaktiebolaget LM Ericsson (publ) | Scheduling in mobile communications systems |
JP2014239272A (ja) * | 2013-06-06 | 2014-12-18 | 京セラ株式会社 | 移動体通信システムおよび基地局 |
CN105849571A (zh) * | 2013-06-24 | 2016-08-10 | Zte维创通讯公司 | 用于调整对时间要求严格的功能的最大持续时间的方法及系统 |
WO2023109743A1 (zh) * | 2021-12-17 | 2023-06-22 | 华为技术有限公司 | 传输数据的方法和通信装置 |
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CN102783205B (zh) | 2016-08-24 |
CN102783205A (zh) | 2012-11-14 |
US20130028127A1 (en) | 2013-01-31 |
JP2013526131A (ja) | 2013-06-20 |
EP2557837A1 (en) | 2013-02-13 |
KR101457347B1 (ko) | 2014-11-03 |
JP5667285B2 (ja) | 2015-02-12 |
TWI544818B (zh) | 2016-08-01 |
TW201208406A (en) | 2012-02-16 |
KR20130001304A (ko) | 2013-01-03 |
EP2557837A4 (en) | 2013-12-04 |
BR112012025353A2 (pt) | 2016-06-28 |
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