WO2017192082A1 - Procédé permettant d'utiliser efficacement des ressources autorisées dans un système de communication sans fil - Google Patents

Procédé permettant d'utiliser efficacement des ressources autorisées dans un système de communication sans fil Download PDF

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Publication number
WO2017192082A1
WO2017192082A1 PCT/SE2017/050180 SE2017050180W WO2017192082A1 WO 2017192082 A1 WO2017192082 A1 WO 2017192082A1 SE 2017050180 W SE2017050180 W SE 2017050180W WO 2017192082 A1 WO2017192082 A1 WO 2017192082A1
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Prior art keywords
traffic
transmission resources
wireless communication
communication device
arrangement
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PCT/SE2017/050180
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English (en)
Inventor
Mattias BERGSTRÖM
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Telefonaktiebolaget Lm Ericsson (Publ)
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Publication of WO2017192082A1 publication Critical patent/WO2017192082A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

Definitions

  • the proposed technology generally relates to wireless communications, and more specifically to resource allocation and enabling efficient utilization of granted resources in a wireless communication system.
  • LTE Long term Evolution
  • uplink transmissions as well as downlink transmissions are scheduled by the network.
  • LTE Long term Evolution
  • UE User Equipment
  • FIG. 1 is a schematic diagram illustrating an example of a grant-based procedure for enabling uplink transmission in a wireless communication system.
  • a network node 10 allocates grant(s) to a wireless communication device 20 for enabling uplink transmission utilizing transmission resources provided in the grant(s).
  • the grant(s) may be allocated in response to a Scheduling Request (SR) and/or Buffer Status Report (BSR).
  • SR Scheduling Request
  • BSR Buffer Status Report
  • the grants may be so-called pre- scheduled grants.
  • the uplink is normally scheduled by dynamic grants meaning that the grants are provided on a per-need basis.
  • the UE indicates via a SR indication to the eNB that it needs to be scheduled in UL.
  • the eNB may then provide a PDCCH transmission to the UE containing an UL grant.
  • the UL grant is usually rather small since the SR is only a one-bit indication and hence the eNB only knows that the UE has data to transmit, but does not know how much data the UE has to transmit. Hence the eNB may only provide a grant which allows for little data to be transmitted.
  • the UE will in the first transmission provide a BSR report to the eNB which indicates in more detail, compared to the SR, how much data the UE has in its UL buffer(s). If the BSR indicates that, even after the first transmission which contained the BSR, the UE has more data in its buffers the eNB can provide further UL transmission grants.
  • a way to reduce scheduling latency in LTE is to lower the time for signaling and grant acquisition by using pre-scheduling, including also Semi-Persistent Scheduling (SPS) strategies.
  • SPS Semi-Persistent Scheduling
  • a UE can thus receive UL grants without the UE having sent, or the network having received, a prior request such as an SR and/or BSR for an UL grant by the UE.
  • a prior request such as an SR and/or BSR for an UL grant by the UE.
  • the network can provide periodic UL grants and/or DL assignments with reduced L1 /L2 control signaling compared to dynamic scheduling.
  • system behavior analysis seems to indicate that there is still room for further improvements, especially when it comes to utilizing the transmission resources allocated in prescheduled grants more effectively.
  • Still another object is to provide an arrangement configured to enable control of utilization of transmission resources allocated to a wireless communication device.
  • Another object is to provide corresponding computer programs and computer-program products.
  • a method for controlling utilization of transmission resources allocated to a wireless communication device comprises obtaining a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants, and determining which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • a method for enabling control of utilization of transmission resources allocated to a wireless communication device comprises generating a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants, and preparing the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • an arrangement configured to control utilization of transmission resources allocated to a wireless communication device.
  • the arrangement is configured to obtain a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the arrangement is also configured to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • a wireless communication device comprising an arrangement of the third aspect.
  • an arrangement configured to enable control of utilization of transmission resources allocated to a wireless communication device.
  • the arrangement is configured to generate a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the arrangement is also configured to prepare the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • a network device comprising an arrangement of the fifth aspect.
  • a computer program for controlling, when executed by a processor, utilization of transmission resources allocated to a wireless communication device, wherein the computer program comprises instructions, which when executed by the processor, cause the processor to:
  • a computer program for enabling, when executed by a processor, control of utilization of transmission resources allocated to a wireless communication device, wherein the computer program comprises instructions, which when executed by the processor, cause the processor to:
  • the wireless communication device - output the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • a computer-program product comprising a computer-readable medium having stored thereon a computer program of the seventh aspect or eighth aspect.
  • an apparatus for controlling utilization of transmission resources allocated to a wireless communication device comprises an input module for obtaining a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the apparatus also comprises a determination module for determining which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • an apparatus for enabling control of utilization of transmission resources allocated to a wireless communication device.
  • the apparatus comprises a generating module for generating a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the apparatus also comprises an output module for outputting the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • the proposed technology provides new and efficient ways of enabling efficient utilization of transmission resources allocated in prescheduled grants in a wireless communication system.
  • FIG. 1 is a schematic diagram illustrating an example of a grant-based procedure for enabling uplink transmission in a wireless communication system.
  • FIG. 2 is a schematic flow diagram illustrating an example of a method for controlling utilization of transmission resources allocated to a wireless communication device according to an embodiment.
  • FIG. 3 is a schematic flow diagram illustrating an example of a method for enabling control of utilization of transmission resources allocated to a wireless communication device.
  • FIG. 4 is a schematic flow diagram illustrating a particular example of a method for method for controlling utilization of transmission resources allocated to a wireless communication device according to an alternative embodiment.
  • FIG. 5 is a schematic signaling diagram illustrating a particular example of signaling between a network node such as an eNb and a wireless communication device such as a UE.
  • FIG. 6 is a schematic block diagram illustrating an example of an arrangement configured to control utilization of transmission resources allocated to a wireless communication device.
  • FIG. 7 is a schematic block diagram illustrating an example of a wireless communication device comprising an arrangement of FIG. 6.
  • FIG. 8 is a schematic block diagram illustrating an example of an arrangement configured to enable control of utilization of transmission resources allocated to a wireless communication device.
  • FIG. 9 is a schematic block diagram illustrating an example of a network device comprising an arrangement of FIG. 8.
  • FIG. 10 is a schematic diagram illustrating an example of a computer implementation according to an embodiment.
  • FIG. 1 1 is a schematic block diagram illustrating an example of an apparatus for controlling utilization of transmission resources allocated to a wireless communication device.
  • FIG. 12 is a schematic block diagram illustrating an example of an apparatus for enabling control of utilization of transmission resources allocated to a wireless communication device.
  • FIG. 13 is a schematic diagram illustrating an example of a cloud-based network device in connection with a wireless network according to an embodiment. DETAILED DESCRIPTION
  • the non-limiting terms "User Equipment”, “UE”, “terminal” and “wireless communication device” may refer to a mobile phone, a cellular phone, a Personal Digital Assistant, PDA, equipped with radio communication capabilities, a smart phone, a laptop or Personal Computer, PC, equipped with an internal or external mobile broadband modem, a tablet PC with radio communication capabilities, a target device, a device to device UE, a machine type UE or UE capable of machine to machine communication, iPAD, customer premises equipment, CPE, laptop embedded equipment, LEE, laptop mounted equipment, LME, USB dongle, a portable electronic radio communication device, a sensor device equipped with radio communication capabilities or the like.
  • the term "UE”, the term “terminal” and the term “wireless communication device” should be interpreted as non-limiting terms comprising any type of wireless device communicating with a radio network node in a cellular or mobile communication system or any device equipped with radio circuitry for wireless communication according to any relevant standard for communication within a cellular or mobile communication system.
  • network device may generally refer to an electronic device being communicatively connected to other electronic devices in a network context.
  • a network device may for example be seen as any device located in connection with a communication network, including but not limited to devices and network nodes in access networks, core networks and similar network structures.
  • the term network device may include any suitable network node.
  • the term network device may also encompass cloud-based network devices.
  • network node may refer to base stations, network control nodes such as network controllers, radio network controllers, base station controllers, and the like.
  • base station may encompass different types of radio base stations including standardized base station functions such as Node Bs, or evolved Node Bs, eNBs, and also macro/micro/pico radio base stations, home base stations, also known as femto base stations, relay nodes, repeaters, radio access points, base transceiver stations, BTSs, and even radio control nodes controlling one or more Remote Radio Units, RRUs, or the like.
  • base station functions such as Node Bs, or evolved Node Bs, eNBs, and also macro/micro/pico radio base stations, home base stations, also known as femto base stations, relay nodes, repeaters, radio access points, base transceiver stations, BTSs, and even radio control nodes controlling one or more Remote Radio Units, RRUs, or the like.
  • FIG. 2 is a schematic flow diagram illustrating an example of a method for controlling utilization of transmission resources allocated to a wireless communication device according to an embodiment. The method comprises the following steps:
  • the considered traffic may relate to traffic data available in the wireless communication device, and the step of determining which traffic to transmit may comprise deciding which type or types of the available traffic to transmit using transmission resources provided in the pre-scheduled grant(s).
  • the step of determining which traffic to transmit may comprise determining, for traffic available for transmission by the wireless communication device, whether the traffic is prioritized or allowed for transmission utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • the traffic prioritization configuration may comprise information indicating, per pre-scheduled grant and/or per grant configuration, which traffic can be transmitted using the grant.
  • the traffic prioritization configuration may comprise information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited to use transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating whether traffic is prioritized or unprioritized to use transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating whether traffic is allowed or prohibited to use transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating which type(s) of traffic that is/are prioritized or allowed for transmission utilizing transmission resources provided in pre-scheduled grants, and/or which type(s) of traffic that is/are not allowed for transmission utilizing transmission resources provided in pre- scheduled grants.
  • the wireless communication device may be ensured that the wireless communication device only transmits high-priority data and/or delay sensitive data using the preconfigured grants, while not transmitting low-priority data and/or delay tolerant data using such grants.
  • the information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited includes information that indicates per Radio Bearer, RB, per Logical Channel, LC, per Logical Channel Group, LCG and/or per Quality of Service, QoS, Class Indicator, QCI, whether the associated traffic is prioritized, allowed, unprioritized and/or prohibited.
  • at least part of the traffic prioritization configuration may be received from a network device such as a network node.
  • the step of obtaining the traffic prioritization configuration may involve receiving at least part of the traffic prioritization configuration from a network device.
  • the traffic prioritization configuration may be obtained based on Radio Resource Control, RRC, signaling.
  • At least part of the traffic prioritization configuration may be preconfigured in the wireless communication device.
  • the step of obtaining the traffic prioritization configuration may involve accessing or reading at least part of the traffic prioritization configuration from a suitable memory location such as a configuration storage in the wireless communication device.
  • the traffic prioritization configuration may comprise information indicating at least one traffic type being prioritized, or allowed, for transmission utilizing transmission resources provided in pre-scheduled grants.
  • the step S2 of determining whether the traffic is prioritized for transmission utilizing transmission resources provided in pre-scheduled grants comprises checking whether the traffic type of the traffic available for transmission by the wireless communication device matches the prioritized, or allowed, traffic type(s) of the traffic prioritization configuration. If there is a match, it is concluded that the available traffic is prioritized, or allowed, for transmission using the pre-scheduled grant(s).
  • the prioritized traffic type(s) may be indicated directly, e.g.
  • QoS Quality of Service
  • QoS Quality of Service
  • RB Radio Bearers
  • LC Logical Channel Groups
  • the indications may for example be given per RB, per LC, per LCG and/or per pre-scheduled grant, as will be exemplified later on.
  • the proposed technology may be regarded as a mechanism to map RBs, LCs, LCGs and/or QCI to pre-scheduled uplink resources.
  • the traffic may be transmitted accordingly. If the pre-scheduled grant(s) includes more transmission resources than required for transmission of the prioritized traffic, it may be possible to allow also unprioritized traffic for transmission using part of the transmission resources of the pre-scheduled grant(s).
  • the traffic prioritization configuration may comprise information indicating which type(s) of traffic that is/are being prioritized or allowed, for transmission utilizing transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration may indicate in the traffic prioritization configuration which type(s) of traffic that is/are not allowed for transmission utilizing transmission resources provided in pre-scheduled grants. This is information that can also be used as a basis for determining whether traffic is prioritized, or allowed, to use transmission resources provided in pre- scheduled grants.
  • the traffic prioritization configuration may include information representing a priority order of traffic types.
  • the step of determining which traffic to transmit may be based on the priority order of the traffic types.
  • the priority order may be applied to decide which traffic to transmit utilizing transmission resources allocated in pre-scheduled grant(s).
  • a priority order may look like this:
  • FIG. 3 is a schematic flow diagram illustrating an example of a method for enabling control of utilization of transmission resources allocated to a wireless communication device. The method comprises the following steps:
  • S12 preparing the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit utilizing transmission resources provided in one or more pre- scheduled grants based on the traffic prioritization configuration.
  • the traffic prioritization configuration may enable the wireless communication device to determine whether traffic is prioritized for transmission utilizing transmission resources provided in one or more pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating, per pre-scheduled grant and/or per grant configuration, which traffic can be transmitted using the grant.
  • the traffic prioritization configuration comprises information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited to use transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration comprises information indicating which type(s) of traffic that is/are prioritized or allowed for transmission utilizing transmission resources provided in pre-scheduled grants, and/or which type(s) of traffic that is/are not allowed for transmission utilizing transmission resources provided in pre- scheduled grants.
  • the information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited includes information that indicates per Radio Bearer, RB, per Logical Channel, LC, per Logical Channel Group, LCG and/or per Quality of Service, QoS, Class Indicator, QCI, whether the associated traffic is prioritized, allowed, unprioritized and/or prohibited.
  • the traffic prioritization configuration may be transmitted to the wireless communication device.
  • the traffic prioritization configuration may be transmitted to the wireless communication device by Radio Resource Control, RRC, signaling.
  • RRC Radio Resource Control
  • the traffic prioritization configuration may comprise information indicating at least one traffic type being prioritized, or allowed, for transmission utilizing transmission resources provided in pre-scheduled grants.
  • the prioritized traffic type(s) may be indicated directly, e.g. by means of traffic type indications and/or Quality of Service (QoS) class indications, and/or indirectly, e.g. by using indications of prioritized Radio Bearers (RB), Logical Channels (LC), Logical Channel Groups (LCG).
  • RB prioritized Radio Bearers
  • LC Logical Channels
  • LCG Logical Channel Groups
  • the indications may for example be given per RB, per LC, per LCG and/or per pre-scheduled grant, as will be exemplified later on.
  • the network side may thus indicate which type of bearer/logical channel/logical channel group/QCI can be sent using a pre-scheduled grant.
  • the traffic prioritization configuration may include information representing a priority order of traffic types for allowing a decision on which traffic to transmit utilizing transmission resources provided in pre-scheduled grants, as previously mentioned.
  • the method may for example be performed by a network device.
  • the network device may be a cloud-based network device or a network node such as a radio access network node.
  • the traffic prioritization configuration When the traffic prioritization configuration has been prepared for transmission, it can be transmitted to the wireless device, either by the same network device that generated and prepared the traffic prioritization configuration or by another network device.
  • the network node may be a radio access network node such as an eNB.
  • the network device that generated the traffic prioritization configuration may forward the traffic prioritization configuration to another network device that is responsible for transmitting the configuration to the relevant wireless communication device.
  • the eNB performs UL scheduling for the UE based on information received from the UE.
  • information comprises for example Scheduling Requests (SRs) and Buffer Status Reports (BSRs).
  • SRs Scheduling Requests
  • BSRs Buffer Status Reports
  • the eNB may know which type of traffic the UE available for transmission e.g. based on the BSR as the UE indicates the amount of data available for a Logical Channel Group in the BSR. The eNB can therefore determine how critical it is to provide a grant to the UE based on the type of traffic which is waiting for transmission in the UE. In case of pre-scheduling the eNB may provide UL resources to a UE prior to arrival of data which may reduce the delay for transmitting the UL data because the UE may use the pre-scheduled UL resources when the data arrives without needing an SR and/or BSR from the UE.
  • the eNB may foresee that for a certain UE, UL data may arrive in the buffers and hence the eNB preconfigures the UE with grants such that the UE can transmit as soon as the data arrives.
  • a problem with prior art is that low-priority traffic such as delay tolerant traffic may arrive in the UE and being sent using preconfigured grant even though the eNB's intention of the preconfigured grant was to transmit high-priority traffic such as delay sensitive traffic.
  • traffic which traffic (which may be indicated by referring to a bearer, logical channel, logical channel group, QCI, and so forth) is prioritized or allowed to be transmitted using a preconfigured grant, and optionally also which traffic is not (unprioritized or prohibited traffic).
  • priority traffic or alternatively expressed as “allowed traffic”
  • unprioritized traffic will be used for traffic which is not prioritized to be sent using resources indicated by prescheduled grants.
  • prohibited traffic may be used for traffic which is not allowed to be transmitted using resources indicated by prescheduled grants.
  • the wireless communication device Upon transmitting using the pre-scheduled grant(s), the wireless communication device such as a UE would send prioritized, allowed traffic while not sending prohibited traffic. There may be special cases, where unprioritized traffic can be sent using pre-scheduled grants. Since by applying some embodiments herein, some traffic may be prohibited from using prescheduled grants, therefore the UE may need to acquire a dynamic grant for example by performing a random access procedure or sending a scheduling request.
  • Which traffic is prioritized, allowed, unprioritized and/or prohibited may be determined based on signaling received from the network side (e.g. the eNB), preconfigured rules, or a combination thereof. For example, it will be described how a wireless communication device such as UE can determine whether traffic is "prioritized” or “allowed”, or “unprioritized” or even “prohibited” from being sent using resources provided in preconfigured uplink grants.
  • this may ensure that the wireless communication device such as a UE only transmits delay sensitive data using the preconfigured grants, while not transmitting delay tolerant data using such grants.
  • traffic is "prioritized”, “allowed”, “unprioritized” or “prohibited” based on RRC signaling per bearer, logical channel, logical channel group and/or QoS Class indicator(s).
  • the wireless communication device such as a UE may, in some scenarios, be allowed to send "unprioritized" traffic using preconfigured grant(s) in case there is capacity for both prioritized and unprioritized traffic in such a grant. For example, this will ensure that the UE does not send padding, which could otherwise reduce radio resource efficiency, user experience and potentially UE battery consumption.
  • the network side may ensure that a certain wireless device such as a UE only sends certain types of traffic using a preconfigured grant, while not sending other types of traffic (e.g. low priority and/or delay tolerant traffic) using preconfigured grants and hence the amount of resources which needs to be preconfigured for a UE can be reduced.
  • a certain wireless device such as a UE only sends certain types of traffic using a preconfigured grant
  • other types of traffic e.g. low priority and/or delay tolerant traffic
  • This is particularly beneficial when the network side configures several UEs to use the same resources for UL transmissions but prohibit the UEs from using those resources for non-delay sensitive data and hence the number of UEs assigned to those resources can be increased and the overall system capacity can be improved.
  • FIG. 4 is a schematic flow diagram illustrating a particular example of a method for method for controlling utilization of transmission resources allocated to a wireless communication device according to an alternative embodiment.
  • step S21 comprises obtaining/accessing a traffic prioritization configuration.
  • step S22 traffic X becomes available for transmission.
  • step S23 it is determined whether traffic X is prioritized for pre-scheduled grant(s).
  • step S24 If Yes, traffic X is sent using pre-scheduled grant(s) in step S24. If No, it is determined in step S25 whether other traffic Y is to be sent using pre- scheduled grant(s).
  • step S26 If other traffic Y is to be sent (Yes) using pre-scheduled grant(s), it is determined in step S26 whether traffic X can be included (at least partially) in the same grant(s) as traffic Y. If traffic X can be included (at least partially) in the same grant (Yes), traffic X and Y is sent using pre-scheduled grant(s) in step S24. If traffic X cannot be included (at least partially) in the same grant (No), traffic X is not sent using pre-scheduled grant (S27).
  • FIG. 5 is a schematic signaling diagram illustrating a particular example of signaling between a network node such as an eNB and a wireless communication device such as a UE.
  • a grant configuration involving normal and/or pre-scheduled grant(s) is sent from the network node to the wireless communication device.
  • a traffic prioritization configuration or part thereof is also sent from the network node to the wireless communication device, unless the traffic prioritization configuration or part thereof is already preconfigured in the wireless communication device. It should be understood that the order of transmitting the grant configuration and the traffic prioritization configuration can be changed. Alternatively, the grant configuration and the traffic prioritization configuration can be sent in the same control message. In this particular example, the traffic prioritization configuration indicates that traffic X is unprioritized and traffic Y is prioritized.
  • traffic X When traffic X becomes available in the wireless communication device, traffic X is therefore typically sent using normal grant(s), normally allocated in response to a scheduling request.
  • traffic Y When traffic Y becomes available in the wireless communication device, traffic Y is sent using pre-scheduled grant(s). If both traffic X and Y are available, and both fit (traffic X at least partially) in the same pre-scheduled grant, traffic X and Y are sent using pre-scheduled grant(s).
  • the signaling may be provided using Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • the traffic prioritization configuration may be in the form of a RRC configuration. It should however, be understood that the traffic prioritization configuration is not limited thereto, but may be any general type of configuration indicating traffic prioritization information. The traffic prioritization may even be preconfigured, for example as a configuration in a Subscriber Identity Module (SIM) card or the like.
  • SIM Subscriber Identity Module
  • the signaling for indicating which traffic is prioritized, allowed, unprioritized and/or prohibited may be a bit-flag indicator for a bearer which indicates whether transmissions from this bearer should be done using a pre-configured grant.
  • An example is shown below. It can be seen that the parameter "usePreScheduling" can be included and set to true to indicate that this bearer is "allowed traffic”. If the indication is not present it could be used to indicate that the traffic of the bearer is "prohibited” from using prescheduled resources.
  • Per logical channel or logical channel group Another alternative to implement this embodiment is to indicate per logical channel whether traffic from this logical channel is prioritized, allowed, unprioritized and/or prohibited. An example with a flag for indicating this is provided below. If the flag is present for a logical channel the UE is allowed to transmit traffic from this logical channel on resources provided in preconfigured grants, otherwise not. Another alternative for how to implement this is to indicate per logical channel group if the traffic from this logical channel group is prioritized, allowed, unprioritized and/or prohibited.
  • QoS Quality of Service
  • traffic can be assigned to different QoS Classes which are indicated by QoS Class Identifiers (QCIs).
  • QCIs QoS Class Identifiers
  • QCI 1 may for example be used for Conversational Voice and the Packet Delay Budget and Packet Error Loss Rate are set to values which are suitable for such type of traffic.
  • QCI 4 can for example be used for Non-Conversational Video and the delay and packet error loss rates are set to suitable values for this type of traffic.
  • NOTE 4 (NOTE 7, (e.g. example services
  • This QCI is typically associated with an operator controlled service, i.e., a service where the SDF aggregate's uplink / downlink packet filters are known at the point in time when the SDF aggregate is authorized. In case of E-UTRAN this is the point in time when a corresponding dedicated EPS bearer is established / modified.
  • the SDF aggregate's uplink / downlink packet filters are known at the point in time when the SDF aggregate is authorized.
  • this QCI could be used for the default bearer of a UE/PDN for "premium subscribers".
  • This QCI is typically used for the default bearer of a UE/PDN for non- privileged subscribers.
  • AMBR can be used as a "tool" to provide subscriber differentiation between subscriber groups connected to the same PDN with the same QCI on the default bearer.
  • the eNB will indicate whether traffic associated with a certain QCI is prioritized, allowed, unprioritized and/or prohibited. For example, the eNB may indicate to the UE that e.g. QCI 1 is allowed to use resources provided in prescheduled grants (i.e. it is "allowed traffic"), while other traffic is considered as prohibited traffic.
  • this may be implemented by providing in RRC an indication for a prescheduled grant configuration an indication of a bearer identity, or logical channel identity, or logical channel group identity may be sent using this grant.
  • the eNB may provide a list of such cells.
  • the UE applies a default preconfigured behavior for certain types of bearers, logical channels, logical channel groups or QCIs.
  • a default preconfigured behavior for certain types of bearers, logical channels, logical channel groups or QCIs.
  • any indication the UE determines whether the traffic is prioritized, allowed, unprioritized and/or prohibited from using prescheduled grants. This allows the eNB to omit indications.
  • SRBs signaling radio bearers
  • DRBs data radio bearers
  • the UE applies a default behavior for traffic associated with a certain QoS class, e.g. having a certain QCI. For example the UE may by consider traffic of a first QCI as "allowed", while consider traffic of a second QCI as “prohibited”. This may be beneficial as some traffic may always be considered delay sensitive (e.g. Conversational Voice which has QCI 1 ).
  • the eNB provides an indication for traffic where a default rule is established (e.g. SRBs may be associated with a default rule)
  • the eNB provided indication may take precedence and the UE may apply the indicated behavior rather than the default rule in case an indication has been received.
  • SRBs are by default considered “allowed”
  • the eNB may override this behavior by indicating to the UE that SRBs are "prohibited”.
  • the UE may have a set of preconfigured grants.
  • the UE may be configured with one pre-configuration of grants G1 and another pre- configuration of grants G2, where G1 allows the UE to transmit when the following is true:
  • G2 allows the UE to transmit when the following is true:
  • the eNB may configure G1 such that the UE is allowed to transmit every 1 ms which some very delay sensitive traffic is "allowed” for, and also configure G2 such that UE is allowed to transmit every 40 ms which some less delay sensitive traffic is "allowed" for.
  • the UE can have up to 4 prescheduled grant configurations and usePreScheduledGrants is a bit string where each position in the bit string corresponds to a prescheduling configuration. If the bit corresponding to a certain prescheduled grant configuration is set to 1 (or 0) it may indicate that this bearer is "allowed" to use the resources of that preconfigured grant configuration.
  • the traffic prioritization configuration may comprise information indicating per grant configuration which traffic can be transmitted using the grant. This would then require the prescheduling configurations are given indices:
  • the eNB may therefore configure several UEs to use the resources associated with G1 , but only a few (possibly one) UE is configured to use the resources associated with G2.
  • the eNB may in this scenario not want the UE to use the resources associated with G1 for the delay tolerant traffic (which is mapped to G2). It should be appreciated that this embodiment can be generalized to apply for any number of pre-configurator grants, but for it has been used as an example that the UE has two preconfigured grants.
  • Opportunistic inclusion of unprioritized traffic In case the UE is performing a transmission using a prescheduled grant and for this grant only certain bearers are prioritized to be transmitted it may be so that those bearers has less data than can be transmitted using the grant. E.g. if the grant allows the UE to transmit 1000 Bytes but for the bearers which are prioritized to be transmitted using this grant only has 800 Bytes available then there is 200 Bytes which are unused.
  • the UE will send data from other bearers in the above scenario.
  • data from bearers which are normally not prioritized or allowed to be transmitted on pre-scheduled resources may anyway be sent on a pre-scheduled grant if the UE is transmitting using a prescheduled grant and there is room left in the transmission.
  • the UE may send 200 Bytes from a bearer which is normally not prioritized to be sent using prescheduled grants.
  • Prescheduled grant size 1000 Byte.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1 :
  • UE transmits 800 Byte from bearer A + 200 Byte padding.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Embodiment 2 ensures that if there is room for additional data in a pre-scheduled transmission and data is available for a bearer which is normally not prioritized to be transmitted in pre-scheduled resources, the UE would refrain from sending padding and hence radio resource efficiency will be improved.
  • the UE When the UE includes traffic which is not highly prioritized in a pre-scheduled transmission as described above, it is possible to specify that the UE may only do so for certain type(s) of traffic. Which type(s) of traffic which may anyway be opportunistically included in a pre-scheduled grant may be configured by the network. It would also be possible that when non-prioritized traffic can be included in a pre-scheduled grant, the UE applies a priority order to decide which traffic to include. This is beneficial as there may be some non-prioritized traffic which is more important than other non-prioritized traffic.
  • the proposed technology allows for higher priority traffic to be included before lower priority traffic.
  • bearers were used as examples above, the general concept can be applied equally well to include traffic of an unprioritized logical channel, logical channel group, QoS Class, and so forth if there are remaining resources in a grant.
  • embodiments may be implemented in hardware, or in software for execution by suitable processing circuitry, or a combination thereof.
  • steps, functions, procedures, modules and/or blocks described herein may be implemented in hardware using any conventional technology, such as discrete circuit or integrated circuit technology, including both general-purpose electronic circuitry and application-specific circuitry. Particular examples include one or more suitably configured digital signal processors and other known electronic circuits, e.g. discrete logic gates interconnected to perform a specialized function, or Application Specific Integrated Circuits, ASICs. Alternatively, at least some of the steps, functions, procedures, modules and/or blocks described herein may be implemented in software such as a computer program for execution by suitable processing circuitry such as one or more processors or processing units.
  • processing circuitry includes, but is not limited to, one or more microprocessors, one or more Digital Signal Processors, DSPs, one or more Central Processing Units, CPUs, video acceleration hardware, and/or any suitable programmable logic circuitry such as one or more Field Programmable Gate Arrays, FPGAs, or one or more Programmable Logic Controllers, PLCs.
  • an arrangement configured to control utilization of transmission resources allocated to a wireless communication device.
  • the arrangement is configured to obtain a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the arrangement is also configured to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • the arrangement may be configured to determine, for traffic available for transmission by the wireless communication device, whether the traffic is prioritized or allowed for transmission utilizing transmission resources provided in one or more pre- scheduled grants based on the traffic prioritization configuration.
  • the arrangement is configured to transmit the prioritized traffic utilizing the transmission resources provided in one or more of the pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited to use transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating which type(s) of traffic that is/are prioritized or allowed for transmission utilizing transmission resources provided in pre-scheduled grants, and/or which type(s) of traffic that is/are not allowed for transmission utilizing transmission resources provided in pre- scheduled grants.
  • the information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited includes information that indicates per Radio Bearer, RB, per Logical Channel, LC, per Logical Channel Group, LCG and/or per Quality of Service, QoS, Class Indicator, QCI, whether the associated traffic is prioritized, allowed, unprioritized and/or prohibited.
  • the arrangement may be configured to receive at least part of the traffic prioritization configuration from a network device such as a network node.
  • a network device such as a network node.
  • at least part of the traffic prioritization configuration may be preconfigured in the wireless communication device. In the latter case, the arrangement may be configured to access or read at least part of the traffic prioritization configuration from a suitable memory location such as a configuration storage in the wireless communication device.
  • FIG. 6 is a schematic block diagram illustrating an example of an arrangement configured to control utilization of transmission resources allocated to a wireless communication device.
  • the arrangement 100 comprises a processor 1 10 and a memory 120, the memory 120 comprising instructions executable by the processor, whereby the processor is operative to control the utilization of the transmission resources allocated to the wireless communication device.
  • the arrangement 100 may also include a communication circuit 130.
  • the 5 communication circuit 130 may include functions for wired and/or wireless communication with other devices and/or network nodes in the network.
  • the communication circuit may be based on radio circuitry for communication with one or more other nodes, including transmitting and/or receiving information.
  • the communication circuit 130 may be interconnected to the processor 10 1 10 and/or memory 120.
  • FIG. 7 is a schematic block diagram illustrating an example of a wireless communication device comprising an arrangement of FIG. 6.
  • the wireless communication device 200 comprises an arrangement 100 as illustrated in 15 FIG. 6.
  • an arrangement configured to enable control of utilization of transmission resources allocated to a wireless communication device.
  • the arrangement is configured to generate a traffic prioritization
  • the arrangement is also configured to prepare the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit utilizing transmission resources provided in one or more pre-scheduled grants based on the
  • the traffic prioritization configuration may enable the wireless communication device to determine whether traffic is prioritized for transmission utilizing transmission resources provided in one or more pre-scheduled grants.
  • the traffic prioritization configuration comprises information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited to use transmission resources provided in pre-scheduled grants.
  • the traffic prioritization configuration may comprise information indicating which type(s) of traffic that is/are prioritized or allowed for transmission utilizing transmission resources provided in pre-scheduled grants, and/or which type(s) of traffic that is/are not allowed for transmission utilizing transmission resources provided in pre- scheduled grants.
  • the information indicating whether traffic is prioritized, allowed, unprioritized and/or prohibited includes information that indicates per Radio Bearer, RB, per Logical Channel, LC, per Logical Channel Group, LCG and/or per Quality of Service, QoS, Class Indicator, QCI, whether the associated traffic is prioritized, allowed, unprioritized and/or prohibited.
  • FIG. 8 is a schematic block diagram illustrating an example of an arrangement configured to enable control of utilization of transmission resources allocated to a wireless communication device.
  • the arrangement 300 comprises a processor 310 and a memory 320, the memory 320 comprising instructions executable by the processor, whereby the processor 310 is operative to enable control of the utilization of the transmission resources.
  • the arrangement 300 may also include a communication circuit 330.
  • the communication circuit 330 may include functions for wired and/or wireless communication with other devices and/or network nodes in the network.
  • the communication circuit may be based on radio circuitry for communication with one or more other nodes, including transmitting and/or receiving information.
  • the communication circuit 330 may be interconnected to the processor 310 and/or memory 320.
  • the arrangement 300 may be configured to transmit the traffic prioritization configuration to the wireless communication device.
  • FIG. 9 is a schematic block diagram illustrating an example of a network device comprising an arrangement of FIG. 8.
  • the network device 400 comprises an arrangement 300 as illustrated in FIG. 8.
  • the network device may be a cloud-based network device or a network node such as a radio access network node (e.g. eNB).
  • eNB radio access network node
  • FIG. 10 is a schematic diagram illustrating an example of a computer implementation according to an embodiment.
  • a computer program 525; 535 which is loaded into the memory 520 for execution by processing circuitry including one or more processors 510.
  • the processor(s) 510 and memory 520 are interconnected to each other to enable normal software execution.
  • An optional input/output device may also be interconnected to the processor(s) and/or the memory to enable input and/or output of relevant data such as input parameter(s) and/or resulting output parameter(s).
  • processor' should be interpreted in a general sense as any system or device capable of executing program code or computer program instructions to perform a particular processing, determining or computing task.
  • the processing circuitry including one or more processors is thus configured to perform, when executing the computer program, well-defined processing tasks such as those described herein.
  • the processing circuitry does not have to be dedicated to only execute the above- described steps, functions, procedure and/or blocks, but may also execute other tasks.
  • a computer program 525; 535 for controlling, when executed by a processor, utilization of transmission resources allocated to a wireless communication device.
  • the computer program 525; 535 comprises instructions, which when executed by at least one processor, cause the processor(s) to:
  • a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants, and determine which traffic to transmit by utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • a computer program 525; 535 for enabling, when executed by a processor, control of utilization of transmission resources allocated to a wireless communication device.
  • the computer program 525; 535 comprises instructions, which when executed by at least one processor, cause the processor(s) to:
  • the wireless communication device outputs the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit by utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration .
  • the proposed technology provides a carrier comprising the computer program, wherein the carrier is one of an electronic signal, an optical signal, an electromagnetic signal, a magnetic signal, an electric signal, a radio signal, a microwave signal, or a computer- readable storage medium.
  • the software or computer program 225; 235 may be realized as a computer program product, which is normally carried or stored on a computer-readable medium 220; 230, in particular a non-volatile medium.
  • the computer-readable medium may include one or more removable or non-removable memory devices including, but not limited to a Read-Only Memory, ROM, a Random Access Memory, RAM, a Compact Disc, CD, a Digital Versatile Disc, DVD, a Blu-ray disc, a Universal Serial Bus, USB, memory, a Hard Disk Drive, HDD, storage device, a flash memory, a magnetic tape, or any other conventional memory device.
  • the computer program may thus be loaded into the operating memory of a computer or equivalent processing device for execution by the processing circuitry thereof.
  • a computer-program product comprising a computer-readable medium having stored thereon a computer program as described herein.
  • the flow diagram or diagrams presented herein and/or the presented pseudo code may be regarded as a computer flow diagram or diagrams, when performed by one or more processors.
  • a corresponding apparatus may thus be defined as a group of function modules, where each step performed by the processor corresponds to a function module.
  • the function modules are implemented as a computer program running on the processor.
  • FIG. 1 1 is a schematic diagram illustrating an example of an apparatus for controlling utilization of transmission resources allocated to a wireless communication device.
  • the apparatus 600 basically comprises modules 610, 620 for performing functions and/or actions described herein.
  • the apparatus 600 comprises an input module 610 for obtaining a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the apparatus 600 also comprises a determination module 620 for determining which traffic to transmit by utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • FIG. 1 is a schematic diagram illustrating an example of an apparatus for controlling utilization of transmission resources allocated to a wireless communication device.
  • the apparatus 600 basically comprises modules 610, 620 for performing functions and/or actions described herein.
  • the apparatus 600 comprises an input module 610 for obtaining a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the apparatus 600 also comprises a determination module 620 for determining which traffic to transmit by utilizing transmission resources provided in one or
  • the apparatus 700 basically comprises modules 710, 720 for performing functions and/or actions described herein.
  • the apparatus 700 comprises a generating module 710 for generating a traffic prioritization configuration for controlling utilization of transmission resources of pre-scheduled grants.
  • the apparatus 700 also comprises an output module 720 for outputting the traffic prioritization configuration for transmission to the wireless communication device to enable the wireless communication device to determine which traffic to transmit by utilizing transmission resources provided in one or more pre-scheduled grants based on the traffic prioritization configuration.
  • modules in FIG. 1 1 and FIG. 12 predominantly by hardware modules, or alternatively by hardware, with suitable interconnections between relevant modules.
  • Particular examples include one or more suitably configured digital signal processors and other known electronic circuits, e.g. discrete logic gates interconnected to perform a specialized function, and/or Application Specific Integrated Circuits, ASICs, as previously mentioned.
  • Other examples of usable hardware include input/output, I/O, circuitry and/or circuitry for receiving and/or sending signals.
  • I/O input/output
  • circuitry and/or circuitry for receiving and/or sending signals.
  • the extent of software versus hardware is purely implementation selection.
  • computing services hardware and/or software
  • network devices such as network nodes and/or servers where the resources are delivered as a service to remote locations over a network.
  • functionality can be distributed or relocated to one or more separate physical nodes or servers.
  • the functionality may be re-located or distributed to one or more jointly acting physical and/or virtual machines that can be positioned in separate physical node(s), i.e. in the so-called cloud.
  • cloud computing is a model for enabling ubiquitous on-demand network access to a pool of configurable computing resources such as networks, servers, storage, applications and general or customized services.
  • FIG. 13 is a schematic diagram illustrating an example of a cloud-based network device 910 in connection with a wireless network 800.
  • the network device 910 is located in a cloud environment 900.
  • Functionality relevant for the wireless network 800 such as a wireless access network and/or core network, may be at least partially implemented for execution in a cloud-based network device 910, with suitable transfer of information such as a traffic prioritization configuration between the cloud-based network device and the relevant network nodes such as an network node 810 and/or one or more wireless communication devices 820 in the wireless network 800.
  • the network device may be implemented in hardware, software or a combination thereof.
  • the network device may be a special-purpose network device or a general purpose network device, or a hybrid thereof.
  • a special-purpose network device may use custom processing circuits and a proprietary operating system (OS), for execution of software to provide one or more of the features or functions disclosed herein.
  • a general purpose network device may use common off-the-shelf (COTS) processors and a standard OS, for execution of software configured to provide one or more of the features or functions disclosed herein.
  • COTS common off-the-shelf
  • a special-purpose network device may include hardware comprising processing or computing resource(s), which typically include a set of one or more processors, and physical network interfaces (Nls), which sometimes are called physical ports, as well as non-transitory machine readable storage media having stored thereon software.
  • Nls physical network interfaces
  • a physical Nl may be seen as hardware in a network device through which a network connection is made, e.g.
  • the software may be executed by the hardware to instantiate a set of one or more software instance(s).
  • Each of the software instance(s), and that part of the hardware that executes that software instance, may form a separate virtual network element.
  • a general purpose network device may for example include hardware comprising a set of one or more processor(s), often COTS processors, and network interface controller(s) (NICs), as well as non-transitory machine readable storage media having stored thereon software.
  • the processor(s) executes the software to instantiate one or more sets of one or more applications.
  • one embodiment does not implement virtualization, alternative embodiments may use different forms of virtualization - for example represented by a virtualization layer and software containers.
  • one such alternative embodiment implements operating system-level virtualization, in which case the virtualization layer represents the kernel of an operating system (or a shim executing on a base operating system) that allows for the creation of multiple software containers that may each be used to execute one of a sets of applications.
  • each of the software containers also called virtualization engines, virtual private servers, or jails
  • a user space instance typically a virtual memory space.
  • the virtualization layer represents a hypervisor (sometimes referred to as a Virtual Machine Monitor (VMM)) or the hypervisor is executed on top of a host operating system; and 2) the software containers each represent a tightly isolated form of software container called a virtual machine that is executed by the hypervisor and may include a guest operating system.
  • VMM Virtual Machine Monitor
  • a hypervisor is the software/hardware that is responsible for creating and managing the various virtualized instances and in some cases the actual physical hardware.
  • the hypervisor manages the underlying resources and presents them as virtualized instances. What the hypervisor virtualizes to appear as a single processor may actually comprise multiple separate processors. From the perspective of the operating system, the virtualized instances appear to be actual hardware components.
  • a virtual machine is a software implementation of a physical machine that runs programs as if they were executing on a physical, non-virtualized machine; and applications generally do not know they are running on a virtual machine as opposed to running on a "bare metal" host electronic device, though some systems provide para-virtualization which allows an operating system or application to be aware of the presence of virtualization for optimization purposes.
  • the instantiation of the one or more sets of one or more applications as well as the virtualization layer and software containers if implemented, are collectively referred to as software instance(s).
  • Each set of applications, corresponding software container if implemented, and that part of the hardware that executes them (be it hardware dedicated to that execution and/or time slices of hardware temporally shared by software containers), forms a separate virtual network element(s).
  • the virtual network element(s) may perform similar functionality compared to Virtual Network Element(s) (VNEs). This virtualization of the hardware is sometimes referred to as Network Function Virtualization (NFV)).
  • NFV Network Function Virtualization
  • NFV may be used to consolidate many network equipment types onto industry standard high volume server hardware, physical switches, and physical storage, which could be located in data centers, NDs, and Customer Premise Equipment (CPE).
  • CPE Customer Premise Equipment
  • different embodiments may implement one or more of the software container(s) differently.
  • a hybrid network device which includes both custom processing circuitry/proprietary OS and COTS processors/standard OS in a network device, e.g. in a card or circuit board within a network device ND.
  • a platform Virtual Machine such as a VM that implements functionality of a special-purpose network device, could provide for para-virtualization to the hardware present in the hybrid network device.
  • VM Platform Virtual Machine
  • the embodiments described above are merely given as examples, and it should be understood that the proposed technology is not limited thereto. It will be understood by those skilled in the art that various modifications, combinations and changes may be made to the embodiments without departing from the present scope as defined by the appended claims. In particular, different part solutions in the different embodiments can be combined in other configurations, where technically possible.

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Abstract

La présente invention concerne un procédé et un dispositif associé permettant de commander l'utilisation de ressources de transmission affectées à un dispositif de communication sans fil. Le procédé consiste à obtenir (S1) une configuration de la hiérarchisation de trafic permettant de commander l'utilisation de 5 ressources de transmission des autorisations préprogrammées, et à déterminer (S2) le trafic à transmettre en utilisant les ressources de transmission fournies dans une ou plusieurs autorisations préprogrammées sur la base de la configuration de la hiérarchisation de trafic.
PCT/SE2017/050180 2016-05-02 2017-02-27 Procédé permettant d'utiliser efficacement des ressources autorisées dans un système de communication sans fil WO2017192082A1 (fr)

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EP3661307A1 (fr) * 2018-11-30 2020-06-03 T-Mobile USA, Inc. Dépriorisation de trafic en utilisant des sous-trames non valides indiquées dynamiquement
CN113242577A (zh) * 2018-12-20 2021-08-10 Oppo广东移动通信有限公司 一种资源调度方法、终端设备及网络设备
CN113645708A (zh) * 2020-05-11 2021-11-12 中国移动通信有限公司研究院 一种调度、调度请求方法、设备、装置及介质

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