JP2021507549A - SR configuration to enable services with different priorities - Google Patents

Abstract

In a network configured to communicate over multiple services, each service may have one or more SR configurations. In embodiments, the processor may detect SR collisions in which SR opportunities for different services, as defined by the corresponding configuration, overlap at least partially. The processor may take steps to resolve the conflict, at least based on the potential conflict detected.

Description

Cross-references to related applications This application is incorporated herein by reference in its entirety, as if both disclosures were fully described below, and for all applicable purposes, 2017. US provisional patent application No. 62 / 544,701 named "SR CONFIGURATION FOR ENABLING SERVICES OF DIFFERENT PRIORITIES" filed on August 11, 2018, and "SR CONFIGURATION FOR ENABLING SERVICES OF" filed on August 8, 2018. Claims the interests of US Non-Provisional Patent Application No. 16 / 058,731 named "DIFFERENT PRIORITIES".

Aspects of the present disclosure generally relate to wireless communication systems, and more specifically to managing SRs in networks that support multiple communication services.

Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, and broadcasting. These wireless networks may be multiple access networks that can support multiple users by sharing available network resources. Such networks, which are usually multiple access networks, support communication for multiple users by sharing available network resources. An example of such a network is the Universal Terrestrial Radio Access Network (UTRAN). UTRAN is a radio access network defined as part of the Universal Mobile Telecommunications System (UMTS), a 3rd generation (3G) mobile phone technology supported by the 3rd Generation Partnership Project (3GPP). (RAN). Examples of multiple access network formats include code division multiple access (CDMA®) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, and single carriers. Includes FDMA (SC-FDMA) networks.

A wireless communication network may include several base stations or node Bs that can support communication for some user equipment (UE). The UE may communicate with the base station via downlinks and uplinks. A downlink (or forward link) refers to a communication link from a base station to a UE, and an uplink (or reverse link) refers to a communication link from a UE to a base station.

The base station may transmit data and control information to the UE on the downlink and / or may receive data and control information from the UE on the uplink. On the downlink, transmissions from base stations may be subject to interference due to transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters. On the uplink, transmissions from the UE may be interfered with by other UE uplink transmissions communicating with the neighbor base station, or from other wireless RF transmitters. This interference can reduce performance on both the downlink and the uplink.

As the demand for mobile broadband access continues to grow, the potential for interference and congestion networks as more UEs access long-range wireless communication networks and more short-range wireless systems are deployed in the region. Is increasing. Research and development is ongoing to evolve wireless technology not only to meet the growing demand for mobile broadband access, but also to evolve and improve the user experience of mobile communications.

In one aspect of the disclosure, a method of wireless communication is disclosed. This method involves communicating through multiple different services, each with a corresponding scheduling request (SR) configuration, and detecting the potential occurrence of SR conflicts based on multiple SR configurations. Occurs when the SR opportunity of the first service in multiple services and the SR opportunity of the second service in multiple services overlap at least partially, the steps and the potential for SR conflicts. It may include a step of resolving the occurrence.

In an additional aspect of the present disclosure, a wireless communication system is disclosed. The system is a means for communicating through multiple different services, each with a corresponding Scheduling Request (SR) configuration, and a means for detecting potential SR conflicts based on multiple SR configurations. Yes, SR conflicts occur when the SR opportunity of the first service in multiple services and the SR opportunity of the second service in multiple services overlap at least partially, with the means and SR. It may include means for resolving potential collisions.

In an additional aspect of the present disclosure, a non-transitory computer-readable medium storing the program code is disclosed. The program code is code for communicating through multiple different services, each with a corresponding scheduling request (SR) configuration, and code for detecting potential SR collisions based on multiple SR configurations. Yes, SR conflicts occur when the SR opportunity of the first service in multiple services and the SR opportunity of the second service in multiple services overlap at least partially, with the code and SR. It also includes code for resolving potential conflicts.

In an additional aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and memory attached to the processor. The processor is configured to detect the potential occurrence of SR conflicts based on multiple SR configurations, where SR conflicts are the SR opportunity of the first service in multiple services and the first in multiple services. Occurs when the SR opportunities of the two services overlap at least partially, and is further configured to resolve potential SR conflicts. Further, the transmitter / receiver may be configured to communicate via a plurality of different services, each having a corresponding scheduling request (SR) configuration.

The above outlines the features and technical advantages of the examples according to the present disclosure fairly broadly so that the following detailed description can be better understood. The additional features and benefits are described below. The disclosed concepts and examples can be readily used as the basis for modifying or designing other structures to achieve the same objectives of the present disclosure. Such an even configuration does not deviate from the appended claims. Both the characteristics of the concepts disclosed herein, their construction and manner of operation, along with their relevant advantages, will be better understood from the following description when considered with respect to the accompanying figures. Each of the figures is provided for illustration and illustration and is not provided as a definition of the limitation of claims.

Further understanding of the essence and benefits of the present disclosure may be realized by reference to the drawings below. In the accompanying drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following a reference label with a second label that distinguishes between dash and similar components. If only the first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label.

It is a block diagram which shows the detail of a wireless communication system. It is a block diagram which shows the design of the base station and UE configured according to one aspect of this disclosure. It is a timing diagram which shows the detail of communication by one aspect of this disclosure. It is a timing diagram which shows the detail of communication by one aspect of this disclosure. It is a timing diagram which shows the detail of communication by one aspect of this disclosure. It is a flowchart which shows the detail of communication by one aspect of this disclosure. It is a flowchart which shows the detail of communication by one aspect of this disclosure. It is a flowchart which shows the detail of communication by one aspect of this disclosure.

The detailed description described below in connection with the accompanying drawings and appendices is intended to illustrate the various configurations and is not intended to limit the scope of this disclosure. Rather, the detailed description includes specific details for a complete understanding of the subject matter of the present invention. Well-known structures and components are shown in the form of block diagrams, where these specific details may not be necessary in all cases, and in some cases, for clarity of presentation. That will be clear to those skilled in the art.

The present disclosure relates to providing or participating in authorized shared access between two or more wireless communication systems, also commonly referred to as wireless communication networks. In various embodiments, the techniques and devices are code division multiple access (CDMA®) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, singles. May be used for wireless communication networks such as carrier FDMA (SC-FDMA) networks, LTE networks, GSM® networks, 5th generation (5G) or New Radio (NR) networks, and other communication networks. .. The terms "network" and "system" as described herein may be used interchangeably.

OFDMA networks can implement wireless technologies such as advanced UTRA (E-UTRA), IEEE802.11, IEEE802.16, IEEE802.20, and flash OFDM. UTRA, E-UTRA, and Global System for Mobile Communications (GSM®) are part of the Universal Mobile Telecommunications System (UMTS). In particular, Long Term Evolution (LTE) is the release of UMTS using E-UTRA. UTRA, E-UTRA, GSM®, UMTS and LTE are listed in documents provided by an organization named "3rd Generation Partnership Project" (3GPP), and cdma2000 is "3rd Generation Partnership". It is described in a document from an organization named "Project 2" (3GPP2). These various wireless technologies and standards are known or under development. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration between groups of telecommunications associations aimed at defining globally applicable 3rd generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP can define specifications for next-generation mobile networks, mobile systems, and mobile devices. The present disclosure relates to the evolution of wireless technologies from LTE, 4G, 5G, NR, and beyond with shared access to the wireless spectrum between networks using a series of new and different wireless access technologies or wireless air interfaces. ..

In particular, 5G networks envision diverse deployments, diverse spectra, and diverse services and devices that can be implemented using OFDM-based integrated air interfaces. Further improvements to LTE and LTE-A will be considered in addition to the development of new radio (NR) technology for 5G NR networks to achieve these goals. 5G NR is (1) ultra-high density (for example, about 1 million nodes / km ² ), ultra-low complexity (for example, about tens of bits / second), ultra-low energy (for example, about 10 years or more). Powerful to protect the Internet of Things (IoT), a massive mono with deep coverage that has the ability to reach difficult locations (battery life), and (2) sensitive personal, financial or sensitive information. Includes security, ultra-high reliability (eg, about 99.9999% reliability), ultra-low latency (for example, about 1ms), and mission-critical control with users who have or lack a wide range of mobility. , And (3) ultra-high capacity (eg about 10Tbps / km ² ), ultra-high data rates (eg multi-Gbps rates, user experience rates above 100Mbps), and deep awareness of advanced discovery and optimization. It can be scaled to provide coverage, including enhanced mobile broadband.

5G NR is for efficient multiplexing of services and features with dynamic Low Latency Time Division Duplex (TDD) / Frequency Division Duplex (FDD) design with scalable numerology and transmission time interval (TTI). With a common flexible framework of Massive Multi-Input Multi-Output (MIMO), robust millimeter-wave (mmWave) transmission, advanced channel coding, and advanced wireless technologies such as device-centric mobility. , Can be implemented to use an optimized OFDM-based waveform. The scalability of numerology in 5G NR, with scaling of subcarrier spacing, can efficiently address the activities of diverse services across diverse spectra and diverse deployments. For example, in various outdoor and macro coverage deployments of FDD / TDD implementations below 3 GHz, subcarrier spacing can occur at 15 kHz for bandwidths such as 1, 5, 10, 20 MHz. For various other outdoor and small cell coverage deployments of TDD above 3GHz, subcarrier spacing can occur at 30kHz for a bandwidth of 80 / 100MHz. For various other indoor wideband implementations that use TDD in the unlicensed portion of the 5GHz band, subcarrier spacing can occur at 60kHz for a bandwidth of 160MHz. Finally, for various deployments transmitting in mmWave components in TDD at 28GHz, subcarrier spacing can occur at 120kHz for a bandwidth of 500MHz.

5G NR's scalable numerology facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for lower latency and higher reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long and short TTIs is to allow transmission to start on symbol boundaries. 5G NR also contemplates a self-contained, integrated subframe design with uplink / downlink scheduling information, data, and acknowledgments in the same subframe. Self-contained, integrated subframes can be flexibly configured cell by cell to dynamically switch between uplink and downlink to meet unlicensed or contention-based shared spectrum, current traffic needs. Supports adaptive uplink / downlink communication.

Various other aspects and features of the present disclosure will be further described below. The teachings herein can be embodied in a wide variety of forms, and any particular structure, function, or both disclosed herein is representative and not limiting. Will be clear. Based on the teachings herein, one of ordinary skill in the art can implement one aspect disclosed herein independently of any other aspect, and two or more of these aspects vary. It will be understood that they can be combined in a way. For example, the device may be implemented or the method may be practiced using any number of aspects described herein. In addition, such devices may be implemented in addition to or using one or more of the embodiments described herein, or using other structures, functions, or structures and functions. Or such a method may be practiced. For example, the method may be implemented as part of a system, device, device and / or as an instruction stored on a computer-readable medium for execution on a processor or computer. Further, one aspect may include at least one element of the claim.

FIG. 1 is a block diagram showing a 5G network 100 including various base stations and UEs configured according to aspects of the present disclosure. 5G network 100 includes some base stations 105 and other network entities. The base station may be a station that communicates with the UE, and is sometimes called an advanced node B (eNB), a next-generation eNB (gNB), an access point, or the like. Each base station 105 may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to this particular geographic coverage area of a base station and / or base station subsystem serving the coverage area, depending on the circumstances in which the term is used. ..

Base stations can provide communication coverage for macrocells, or small cells such as picocells or femtocells, and / or other types of cells. Macrocells can generally cover a relatively large geographic area (eg, a few kilometers in radius) and allow unlimited access by UEs subscribed to the services of network providers. Small cells, such as pico cells, can generally cover a relatively small geographic area and allow unlimited access by UEs subscribed to the services of network providers. Small cells, such as femtocells, also generally cover a relatively small geographic area (eg, home) and, in addition to unlimited access, are within the UE (eg, Limited Subscriber Group (CSG)) that has an association with the femtocell. It can also provide restricted access by UE, UE for users at home, etc.). A base station for a macro cell is sometimes called a macro base station. Base stations for small cells are sometimes referred to as small cell base stations, pico base stations, femto base stations or home base stations. In the example shown in FIG. 1, base stations 105d and 105e are ordinary macro base stations, while base stations 105a to 105c are 3D (3D) MIMO, full dimension (FD) MIMO, or massive MIMO. It is a macro base station that can handle one of them. Base stations 105a-105c utilize their higher dimensional MIMO capabilities to take advantage of 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacitance. Base station 105f is a small cell base station that can be a home node or a portable access point. A base station can support one or more cells (eg, two, three, four, etc.).

5G network 100 can support synchronous or asynchronous operation. In the case of synchronous operation, the base stations may have similar frame timings, and transmissions from different base stations may be substantially time-matched. In the case of asynchronous operation, the base stations may have different frame timings, and transmissions from different base stations may not be time aligned.

UE115 is distributed throughout the wireless network 100, and each UE may be fixed or mobile. UEs are sometimes referred to as terminals, mobile stations, subscriber units, stations, and so on. UEs can be cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, tablet computers, laptop computers, cordless phones, wireless local loop (WLL) stations, and so on. In one aspect, the UE may be a device that includes a universal integrated circuit card (UICC). In another aspect, the UE may be a device that does not contain UICC. In some embodiments, a UE that does not contain a UICC is sometimes referred to as an internet of everything (IoE) device. UE115a-115d are examples of mobile smartphone devices that access the 5G network 100. The UE can also be a machine specifically configured for connected communications, including machine-based communications (MTCs), enhanced MTCs (eMTCs: enhanced MTCs), narrowband IoT (NB-IoT), and more. UE115e-115k are examples of various machines configured for communication to access the 5G network 100. The UE may also be able to communicate with any type of base station, whether macro base station, small cell, etc. In Figure 1, a lightning bolt (eg, a communication link) is a wireless transmission or base between a UE and a serving base station, which is a base station designated to serve the UE on downlinks and / or uplinks. Indicates desired transmission between stations and backhaul transmission between base stations.

During operation on the 5G network 100, base stations 105a-105c serve UE 115a and 115b using coordinated spatial techniques such as 3D beamforming and multipoint coordination (CoMP) or multi-connection. The macro base station 105d executes backhaul communication with the base stations 105a to 105c and the small cell base station 105f. The macro base station 105d also subscribes to UE 115c and 115d and transmits the multicast service received by UE 115c and 115d. Such multicast services can include mobile television or stream video, or can include other services for providing community information such as weather emergencies or alerts such as amber alerts or gray alerts. ..

5G Network 100 also supports mission-critical communications over extremely reliable and redundant links for mission-critical devices such as the drone UE115e. Redundant communication links with UE115e include those from macro base stations 105d and 105e, as well as small cell base stations 105f. Other machine-type devices such as UE115f (thermometer), UE115g (smart meter), and UE115h (wearable device) can be directly or multi-united with base stations such as small cell base station 105f and macro base station 105e through 5G network 100. By communicating that information with another user device that relays that information to the network in a hop configuration (for example, UE115f communicates temperature measurement information to the smart meter UE115g, which is then reported to the network through the small cell base station 105f). Can communicate. 5G network 100 can also provide additional network efficiency through dynamic low latency TDD / FDD communication, such as during a vehicle-to-vehicle (V2V) mesh network between UE115i and 115k communicating with macro base station 105e.

FIG. 2 shows a block diagram of the design of base stations 105 and UE 115, which can be one of the base stations of FIG. 1 and one of the UEs. At base station 105, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. The control information can be for PBCH, PCFICH, PHICH, PDCCH, EPDCCH, MPDCCH and the like. The data can be about PDSCH etc. Transmission processor 220 can process data and control information (eg, coding and symbol mapping) to obtain data symbols and control symbols, respectively. Transmission processor 220 may generate, for example, reference symbols for PSS, SSS, and cell-specific reference signals. The transmit (TX) multi-input multi-output (MIMO) processor 230 can perform spatial processing (eg, precoding) on data symbols, control symbols, and / or reference symbols, if applicable, and output symbols. Streams can be provided to modulators (MOD) 232a-232t. Each modulator 232 can process its own output symbol stream (for example, for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can further process the output sample stream (eg, convert it to analog, amplify it, filter it, and upconvert it) to obtain a downlink signal. The downlink signals from the modulators 232a to 232t may be transmitted via the antennas 234a to 234t, respectively.

In UE115, the antennas 252a-252r can receive the downlink signal from the base station 105 and can provide the received signal to the demodulator (DEMOD) 254a-254r, respectively. Each demodulator 254 can tune (eg, filter, amplify, downconvert, and digitize) its received signal to obtain an input sample. Each demodulator 254 can further process the input sample (for example, for OFDM, etc.) to obtain the received symbol. The MIMO detector 256 can acquire received symbols from all demodulators 254a to 254r, perform MIMO detection on the received symbols, and provide the detected symbols, if applicable. The receiving processor 258 processes the detected symbols (eg, demodulates, deinterleaves, and decodes), provides the decoded data for the UE 115 to the data sink 260, and provides the decoded control information to the controller / processor 280. Can be provided to.

On the uplink, in UE115, transmit processor 264 receives and processes data from data source 262 (eg, for PUSCH) and receives and processes control information from controller / processor 280 (eg, for PUCCH). May be processed. Transmission processor 264 may generate reference symbols for reference signals. Symbols from transmit processor 264 may, where applicable, be precoded by TX MIMO processor 266, further processed by modulators 254a-254r (for example, for SC-FDM, etc.) and transmitted to base station 105. At base station 105, the uplink signal from UE 115 is received by antenna 234, processed by demodulator 232, and if applicable, detected by MIMO detector 236, further processed by receiving processor 238, and sent by UE 115. The decrypted data and control information can be acquired. The processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240.

Controllers / processors 240 and 280 may direct operations at base stations 105 and UE 115, respectively. The controller / processor 240 and / or other processors and modules at base station 105 can perform or direct the execution of various processes of the techniques described herein. Also, does the controller / processor 280 and / or other processors and modules in UE 115 perform the functional blocks shown in FIGS. 5A-5B and / or other processes for the techniques described herein? , Or can be instructed to execute. Memories 242 and 282 can store data and program code for base stations 105 and UE 115, respectively. Scheduler 244 can schedule the UE for data transmission on the downlink and / or uplink.

Wireless communication systems operated by different network operating entities (eg, network operators) can share spectra. In some cases, a network operating entity may use the entire specified shared spectrum, at least for a time period before another network operating entity uses the entire specified shared spectrum for different time periods. Can be configured. Therefore, some resources (eg, time) are partitioned to allow network operating entities to use the fully specified shared spectrum and to mitigate interfering communication between different network operating entities. , May be assigned to different network operating entities for a particular type of communication.

For example, a network operating entity may be allocated some time resources reserved for exclusive communication by the network operating entity, using the entire shared spectrum. The network operating entity can also allocate other time resources, in which case the entity is given priority over other network operating entities for communicating using the shared spectrum. These time resources, which are preferred for use by the network operating entity, may be opportunistically used by other network operating entities if the preferred network operating entity does not utilize the resource. Additional time resources may be allocated to any network operator for opportunistic use.

Access to the shared spectrum and arbitration of time resources between different network operating entities is centrally controlled by separate entities and autonomously determined by pre-defined arbitration schemes, or of the network operator's wireless node. It can be judged dynamically based on the dialogue between them.

In some cases, UE 115 and base station 105 may operate within a shared radio frequency spectrum band that may include licensed or unlicensed (eg, competition-based) frequency spectra. In the unlicensed frequency portion of the shared radio frequency spectrum band, the UE 115 or base station 105 may traditionally perform media detection procedures to contend for access to the frequency spectrum. For example, UE 115 or base station 105 has a listen-before-talk (LBT) procedure, such as clear channel assessment (CCA), prior to communicating to determine if a shared channel is available. Can be executed. The CCA may include an energy detection procedure to determine if there are any other active transmissions. For example, the device can infer that a change in the received signal strength indicator (RSSI) of the electricity meter indicates that the channel is occupied. Specifically, signal power that is concentrated in a certain bandwidth and exceeds a predetermined noise floor may point to another wireless transmitter. The CCA may also include the detection of specific sequences that dictate the use of channels. For example, another device may send a particular preamble prior to sending the data sequence. In some cases, the LBT procedure is based on the acknowledgment (ACK / NACK) feedback that the wireless node has for its own transmitted packet as a proxy for the amount of energy detected on the channel and / or collision. May include adjusting the backoff window of.

The use of media detection procedures to compete for access to unlicensed shared spectra can result in inefficient communication. This can be especially apparent when multiple network operating entities (eg, network operators) are trying to access shared resources. In 5G network 100, base stations 105 and UE 115 may be operated by the same or different network operating entities. In some examples, the individual base station 105 or UE 115 may be operated by two or more network operating entities. In another example, each base station 105 and UE 115 may be operated by a single network operating entity. Requiring base stations 105 and UE 115 of different network operating entities to compete for shared resources can result in increased signaling overhead and communication latency.

In communication network 100, one or more UE 115s may want to send information over UL. When data becomes available for transmission at UL, the UE may at least lose access to UL resources to send BSRs. In such cases, the UE's MAC may trigger a scheduling request (SR). SRs may be used to request uplink resources for transmission. For example, UE115 may send an SR to request a UL-SCH resource for a new uplink send.

SR may be transmitted on the uplink control channel (PUCCH). The SR configuration may be preconfigured for the UE. For example, a base station may configure a UE with an SR configuration via RRC signaling. The SR configuration may indicate sr-PUCCH-ResourceIndex, sr-CongifIndex, etc. In the embodiment, the sr-PUCCH-ResourceIndex indicates the SR resource in the frequency domain. In an embodiment, the sr-CongifIndex indicates an RS resource in the time domain. Based on the configuration parameters, the UE may calculate the period and offset of the SR and send the SR as needed at the indicated time and frequency resources.

In the LTE example, the UE may calculate the SR period and transmit the SR during the next scheduled SR opportunity, based on the configuration parameters defined by the base station. However, as users demand faster data rates, additional services are being offered, as explained above, and the latency requirements for additional services are becoming lower. Therefore, in order to meet the low latency requirement, the UE may need to send the SR as fast as possible for authorization-based UL transmission. Therefore, it is desirable to reduce the cycle between SR opportunities. Nevertheless, in addition to supporting services with low latency requirements to appease users demanding increased data traffic, the UE also supports other services with high latency requirements (eg legacy services) at the same time. You may.

Therefore, the network is desired to support a plurality of communications with a service having a low delay requirement and a service having a high delay requirement. Therefore, networks will benefit from having the ability to communicate with different services (eg, services of different priorities). Some examples of services include, but are not limited to, 5G NR eMBB, 5G NR URLLC, IoT, LTE ULL, LTE HR LLC. Services may be ranked according to priority level. For example, URLLC may be ranked as having a higher priority level than eMBB, and of course the ranking level may be defined differently as needed. In embodiments, the ranking level may be based on latency requirements, quality of service requirements, and the like. Of course, the ranking level may be based on other information, rules, and / or requirements as needed. In addition, user-side devices (eg, UE) and / or network-side devices (eg, base stations) may be configured to know the ranking levels of the various services.

In networks designed to support multiple services with different priorities, the UE may be configured to request UL resources depending on the needs of a particular service. For example, the UE is configured to take advantage of SR opportunities for higher priority services at a higher rate compared to SR opportunities for lower priority services to allocate transmission opportunities accordingly. May be good. In addition, in networks designed to support multiple services with different priorities, base stations are configured to distinguish SRs received by services with different priorities in order to allocate UL resources accordingly. May be done.

In embodiments, SRs for different services may be configured differently. For example, the SR of eMBB may be configured differently than the SR of URLLC. By configuring the SRs differently, the base station can distinguish between the SRs.

In embodiments, each service (of the plurality of services) may have a set of SR resources. SR resources may be affected by different parameters. Examples of parameters can include, but are not limited to, cycles, offsets, prohibit timers, maximum number of trials, and so on.

FIG. 3 shows an example in the time domain of a lower priority service 301 having a different time period compared to a higher priority service 302. In this example, SR opportunities are indicated by 303a-303n and 304a-304n. Therefore, in this example, the lower priority service 301 has a longer period of time compared to the higher priority service 302. In the embodiment, the lower priority service 301 may be eMBB and the higher priority service 302 may be URLLC. The example shown in Figure 3 shows only two different services for illustration purposes, but of course the network is configured to support any number of different services, each ranked according to priority level. May be good. The network may be configured such that each of the different services has its own individual SR opportunity computable by the UE and base station. For clarity, this example proceeds with two different services.

In an embodiment, the UE 115 may be configured to transmit only SR transmissions for higher priority services during SR opportunities configured for higher priority services. In addition, the UE 115 may be configured to send only SR transmissions for lower priority services during SR opportunities configured for lower priority services. In such an embodiment, the base station may distinguish the higher priority SR from the lower priority SR, at least based on the timing of the SR transmission.

In embodiments, UE 115 may be configured to send only SR transmissions for lower priority services during SR opportunities configured for its lower priority services, although It may be configured to send SR transmissions for higher priority services during any SR opportunity (eg, higher priority SR opportunity 304 or lower priority SR opportunity 303). .. In such an embodiment, the base station may use information in addition to the timing of SR transmission to distinguish higher priority SRs from lower priority SRs. In one example, the base station may distinguish SRs at least based on the SR PUCCH format. In embodiments, lower priority SRs may use the longer PUCCH (eg, eMBB) and higher priority SRs may use the shorter PUCCH format (eg, URLLC).

Sometimes the UE has multiple SRs (or multiple priority levels of SRs) that the UE can send at the same time, for example when new high-priority and low-priority data arrives at the same time to be sent on the uplink. Situations may occur. Sending multiple SRs (or multiple priority levels of SRs) at the same time can result in SR conflicts. SR collisions of two or more SRs can result in the loss of information for one or more of the conflicting SRs. Therefore, it is desirable to avoid SR collisions. In embodiments, the UE and / or base station may determine that SR collisions can occur at SR opportunities. Based on this expectation of potential SR collisions, UEs and / or base stations may take steps to prevent collisions, as described below.

In embodiments, SR collisions may be avoided via parallel transmission. For example, in embodiments, the UE is configured for parallel transmission of multiple SRs, some of which may be of different priority levels. These UEs may not have power limits that may prevent parallel transmission. In embodiments, the UE may be configured to send one or more available SRs, regardless of the SR's service priority level. In embodiments, the UE may be configured to send one or more available SRs at a subset service priority level. In one example, the network may support first, second, and third services defined as having low, medium, and high priority levels, respectively. The UEs of this network send high-priority SRs during high-priority SR opportunities, high-priority and medium-priority SRs during medium-priority SR opportunities, and low-priority SRs. It may be configured to send high-priority, medium-priority, and low-priority SRs during SR opportunities.

In the embodiment, the UE may avoid SR collisions by transmitting a single SR (or a single priority type SR) during the SR opportunity. This SR collision avoidance configuration may be used when the power of the UE is limited. In addition, this SR collision avoidance configuration may be used in networks that do not support simultaneous transmission of PUCCH for different time periods. For example, in a network where it is difficult or impossible to maintain topological continuity over longer PUCCHs, transmission of PUCCHs of different durations may be avoided.

In an embodiment in which a single SR is transmitted during an SR opportunity, the UE may determine which of the plurality of available SRs is transmitted during the SR opportunity. The UE may select the SR based on the SR priority level. For example, if SR1 supports a first service with a high priority level and SR2 supports a second service with a low priority level, then SR1 has a higher priority and the UE will have a specific SR opportunity. SR1 may be selected for transmission. For example, the UE may choose URLLC SR over eMBB SR for transmission at the next SR opportunity. In an embodiment in which the UE selects from three SRs with three different priority levels, the UE may select the SR with the highest priority level for transmission at the next SR opportunity. Of course, the UE may be configured to choose differently, for example, for one or more reasons (eg, the type of SR opportunity), a lower priority than a higher priority SR. SR may be selected. When selecting an SR for transmission, the UE may drop the unselected SR. In addition, the UE may delay the transmission of unselected SRs until another SR opportunity. Of course, the above example may be extended to an embodiment of transmitting a single type of SR during SR opportunities, where the UE determines the type of SR transmitted during SR opportunities.

In the embodiment, the SR may be configured as a 1-bit SR or a multi-bit SR. In embodiments where the SR is configured as a multi-bit SR, the SR may indicate whether UL resources for one service or multiple services are required. For example, one or more of the bits may indicate that one, two, or more different services are requesting UL resources. In addition, one or more of the bits may indicate which of the different services is required by the SR. For example, one or more of the bits may indicate that UL services are requested for higher priority services (eg URLLC) and lower priority services (eg eMBB). Requesting resources for multiple services using multi-bit SR is another way to avoid conflicts. For example, instead of the UE facing a choice of two SRs that can be used for transmission at the same time, multiple UL resource requests are packaged in a single SR, which is a multi-bit SR, and collide with another SR that is transmitted at the same time. Multi-bit SR will be sent at the next SR opportunity without risk.

4A and 4B show embodiments in which SR interruptions are processed. For example, a low-priority SR may be available for transmission while a high-priority SR is available for transmission. Given this situation, the UE may be configured to suspend the SR currently being transmitted. Networks that support any configuration of SR described herein may experience this situation. For example, in a multi-bit SR configuration, the multi-bit SR in the process of sending may contain UL resource requests for low and medium services, and the newly available multi-bit SR is a high priority service. May contain UL resource requests.

FIG. 4A shows an example in which the UE interrupts the transmission of a low priority SR and starts transmitting a newly available high priority SR. In this example, when the SR opportunity becomes available, UE115 decides to send the low priority SR401. After initiating the transmission, a new SR402 becomes available, which is a higher service than the low priority SR401 service. In the embodiment, the UE is configured to suspend the low priority SR403 and start transmitting the high priority SR404.

In an embodiment, the UE is configured to determine whether to perform an interruption. For example, the decision may be based on at least the amount of priority level difference between the currently transmitting SR and the new high priority SR. For example, a UE may suspend a low-priority SR and send a high-priority SR, but a UE may suspend a medium-priority SR and not send a high-priority SR. Good. This decision may be based on at least the amount of time remaining on the current SR opportunity. For example, the UE may send the current SR if the SR opportunity does not have enough time left to fully send the higher priority SR, or because of the increased complexity of performing the interruption. You may refrain from interrupting. The UE may consist of any number and combination of rules for deciding whether to interrupt the current low priority transmission.

FIG. 4B shows an example of a UE that does not perform the above interruption. The UE may be configured so that interruption is not an option. The UE may be configured to perform parallel transmissions when new SRs become available during the SR opportunity. In addition, the UE may be configured to decide to perform parallel transmissions rather than performing interruptions (eg, based on power capacity).

In embodiments, the service may consist of a plurality of sets of SR configurations, each with its own parameters (eg, period, offset, etc.) that can be calculated by the UE and the base station. Therefore, aperiodic SR opportunities are supported by the network. For example, in FIG. 3, the lower priority service 301 may have an SR opportunity during the 1 ms period starting at time t. If necessary, the network may double the SR opportunity by adding an SR opportunity over a 1ms period starting at time t + x (for example, an offset of x). Of course, any priority service may be configured with more SR opportunities, if desired. In addition, the offsets and duration of the various SR opportunities may vary as needed.

Figure 5A illustrates an exemplary way a network supports multiple services. In step 500, one or more transmitters and / or receivers on the network communicate over multiple services (eg, 5G NR eMBB, 5G NR URLLC, IoT, LTE ULL, LTE HR LLC, etc.). In step 502, one or more transmitters and / or receivers on the network communicate different SR configurations for different services. At step 504, one or more processors in the network detect an opportunity for SR collision. At step 506, one or more processors in the network determine how to resolve potential conflicts. At step 508, one or more processors in the network resolve the expected conflict. In Figure 5A, one or more processors may be user-side (eg, UE) and / or server-side (eg, base station).

Figure 5B illustrates an exemplary way a UE supports multiple services. In step 501, one or more transmitters of the UE transmit over multiple services (eg, 5G NR eMBB, 5G NR URLLC, IoT, LTE ULL, LTE HR LLC, etc.). In step 503, one or more transmitters of the UE transmit according to different SR configurations for different services. At step 505, one or more processors in the UE detect an opportunity for SR collision. At step 507, one or more processors in the UE determine how to resolve potential conflicts. The UE may make the decision according to any of the above decision techniques. In embodiments, the UE may be configured to solve the possibilities according to network-defined resolution techniques. In such a situation, the UE may be configured to skip decision 507 and instead move from detection step 505 to resolution step 509. At step 509, one or more processors in the UE resolve the expected conflict. The UE may resolve the expected conflict according to any of the resolution techniques described above.

Figure 5C illustrates an exemplary way a base station supports multiple services. In step 511, one or more receivers at the base station receive UL resource requests over multiple services (eg, 5G NR eMBB, 5G NR URLLC, IoT, LTE ULL, LTE HR LLC, etc.). At step 513, one or more receivers at the base station receive UL resource requests according to different SR configurations for different services. At step 515, one or more processors at the base station detect potential SR collision opportunities. Potential conflict opportunities can occur when the SR opportunity for the first service overlaps with the SR opportunity for the second service. At step 517, one or more processors at the base station determine how to resolve potential conflicts. In one example, the base station may resolve overlapping SR opportunities by suspending one or more SR opportunities. In embodiments, the base station may suspend one or more lower SR opportunities and refrain from suspending the highest SR opportunities. In some networks, the base station may be configured to simply suspend all overlapping SR opportunities. In such a situation, the base station may be configured to skip decision 517 and instead move from detection step 515 to resolution step 519. At step 509, one or more processors at the base station resolve the expected conflict.

Those skilled in the art will appreciate that information and signals may be represented using any of a wide variety of techniques and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description are voltages, currents, electromagnetic waves, magnetic or magnetic particles, light fields or optical particles, or them. It may be represented by any combination of.

The functional blocks and modules of FIGS. 4A and 5A-5C may include processors, electronic devices, hardware devices, electronic components, logic circuits, memory, software code, firmware code, etc., or any combination thereof. ..

Those skilled in the art will further understand that the various exemplary logical blocks, modules, circuits, and algorithmic steps described herein in connection with the present disclosure may be implemented as electronic hardware, computer software, or a combination of both. Will be done. To articulate this compatibility between hardware and software, various exemplary components, blocks, modules, circuits, and steps are generally described above with respect to their functionality. Whether such functionality is implemented as hardware or software depends on the particular application and the design constraints imposed on the entire system. Those skilled in the art may implement the features described in various ways for each particular application, but decisions on such implementation should not be construed as causing deviations from the scope of this disclosure. Those skilled in the art will also appreciate that the order or combination of components, methods, or interactions described herein is merely an example, and that the components, methods, or interactions of the various aspects of the present disclosure are described in the book. It will be readily appreciated that they may be combined or practiced in ways different from those illustrated and described herein.

The various exemplary logic blocks, modules, and circuits described with respect to the disclosure herein are general purpose processors, digital signal processors (DSPs), application specific integrated circuits, designed to perform the functions described herein. It can be implemented or implemented using application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, individual gate or transistor logic, individual hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but as an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. Processors are also implemented as a combination of computing devices, such as a combination of DSPs and microprocessors, multiple microprocessors, one or more microprocessors that work with DSP cores, or any other such configuration. You may.

The steps of methods or algorithms described with respect to the disclosure herein can be embodied directly in hardware, in software modules executed by a processor, or in combination thereof. Software modules reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. In some cases. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium may be integrated with the processor. Processors and storage media may reside in the ASIC. The ASIC may be present on the user terminal. Alternatively, the processor and storage medium may reside in the user terminal as separate components.

In one or more exemplary designs, the features described may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, a feature may be stored on a computer-readable medium as one or more instructions or codes, or may be transmitted via a computer-readable medium. Computer-readable media include both computer storage media and communication media, including any medium that facilitates the transfer of computer programs from one location to another. The computer-readable storage medium can be any available medium that can be accessed by a general purpose or dedicated computer. By way of example, but not by limitation, such computer-readable media are RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or desired programs in the form of instructions or data structures. It can be used to carry or store code means and can include a general purpose or dedicated computer, or any other medium that can be accessed by a general purpose or dedicated processor. Also, the connection is sometimes referred to as a computer-readable medium. For example, if the software is sent from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL), coaxial cable, fiber optic cable, Twisted pair, or DSL, is included in the definition of medium. The discs and discs used herein are compact discs (CDs), laser discs (registered trademarks) (discs), optical discs, and digital versatile discs (DVDs). ), Floppy discs and blu-ray discs, discs usually play data magnetically, and discs play data optically using lasers. .. The above combinations should also be included within the scope of computer readable media.

When used in the enumeration of two or more items, the term "and / or" as used herein, including the scope of claims, is used alone in any one of the enumerated items. It means to obtain, or any combination of two or more of the listed items can be used. For example, if the composition is described as containing components A, B, and / or C, then the composition is A only, B only, C only, A and B combination, A and C combination. , B and C combinations, or A, B, and C combinations may be included. Also, the "or" used in the enumeration of items ending in "at least one of" as used herein, including the claims, is, for example, "at least of A, B, or C." A disjunctive, such that the enumeration "one" means A or B or C or AB or AC or BC or ABC (ie, A and B and C), or any of these in any combination thereof. The enumeration is shown.

The above description of this disclosure is provided to allow any person skilled in the art to create or use this disclosure. Various modifications of the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variants without departing from the spirit or scope of the present disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

100 5G network, communication network
105 base station
115 UE
212 data source
220 transmit processor
230 Transmit (TX) Multi-Input Multi-Output (MIMO) Processor
232 Modulator (MOD)
234 antenna
236 MIMO detector
238 receiving processor
239 Data sync
240 controller / processor
242 memory
244 Scheduler
252 antenna
254 Demodulator (DEMOD)
256 MIMO detector
258 receiving processor
260 data sync
262 data source
264 transmit processor
266 TX MIMO processor
280 controller / processor
282 memory
Services with lower priority than 301
Services with higher priority than 302
SR opportunity with lower priority than 303
SR opportunity with higher priority than 304
401 Low priority SR
402 New SR
403 Low priority SR
404 High priority SR

Claims (44)

It is a method of wireless communication by the user device (UE).
A step that identifies multiple scheduling request (SR) configurations, with each SR configuration being associated with one or more of the services that the UE communicates with the base station through it. ,
It is a step of detecting the potential occurrence of SR collision based on the plurality of SR configurations, and the SR collision is the SR opportunity of the first service in the plurality of services and the second in the plurality of services. Steps and steps that occur when SR opportunities for services overlap at least partially
The steps to resolve the potential occurrence of the SR collision and
A method comprising the step of communicating with the base station according to the resolution of the potential occurrence of the SR collision. The step of resolving the potential occurrence of the SR collision is
The step of communicating includes the step of determining the priority of the first service and the priority of the second service.
When the first service has a higher priority than the second service, the step of transmitting the SR associated with the first service and
When the second service has a lower priority than the first service, it includes a step of refraining from transmitting the SR associated with the second service.
The method according to claim 1. The method of claim 2, wherein the refraining step is performed based on the transmit power level of the UE performing the transmit. The step of resolving the potential occurrence of the SR collision is
The method of claim 1, comprising sending a scheduling request for each of the plurality of services based on the corresponding SR configuration during the SR opportunity. The step of resolving the potential occurrence of the SR collision is
With the step of interrupting one or more SRs currently being sent,
The method of claim 1, comprising sending one or more different SRs during the SR opportunity. The method of claim 5, wherein the suspended one or more SRs have a lower priority than the different one or more SRs. The step of resolving the potential occurrence of the SR collision is
The step of detecting at least partially overlapping SR opportunities and
The method of claim 1, comprising the step of suspending SR transmission at one or more of the at least partially overlapping SR opportunities. The step of resolving the potential occurrence of the SR collision is
The method of claim 1, comprising the step of suspending the SR of one or more of the low priority services of the plurality of services. With the step of receiving a control signal identifying one or more low priority services,
The method of claim 1, further comprising suspending the SR of one or more low priority services based on the control signal. The method of claim 2, wherein the one or more SRs are 1-bit SRs. The method of claim 2, wherein the one or more SRs are multi-bit SRs. 11. The method of claim 11, wherein the multi-bit SR is a single SR transmission that signals the SR for multiple services. The method of claim 2, wherein the SR opportunity of the first service, the SR opportunity of the second service, or both may be an aperiodic SR opportunity. The method of claim 2, wherein at least one of the plurality of services is associated with a plurality of SR configurations. A device for wireless communication
A means for identifying multiple scheduling request (SR) configurations, where each SR configuration is associated with one or more of the services that the UE communicates with the base station through it. When,
It is a means for detecting the potential occurrence of SR collision based on the plurality of SR configurations, and the SR collision is the SR opportunity of the first service in the plurality of services and the SR opportunity in the plurality of services. The means and means that occur when the SR opportunity of the second service overlaps at least partially.
Means for resolving the potential occurrence of the SR collision and
A device comprising means for communicating with the base station according to the resolution of the potential occurrence of the SR collision. Resolving the potential occurrence of the SR collision
The communication may include means for determining the priority of the first service and the priority of the second service.
When the first service has a higher priority than the second service, the means for transmitting the SR associated with the first service and the means for transmitting the SR.
When the second service has a lower priority than the first service, it includes means for refraining from transmitting the SR associated with the second service.
The device according to claim 15. 16. The apparatus of claim 16, wherein the refraining is performed based on the transmit power level of the UE performing the transmission. The means for resolving the potential occurrence of the SR collision is
15. The apparatus of claim 15, comprising means for transmitting a scheduling request for each of the plurality of services based on the corresponding SR configuration during the SR opportunity. The means for resolving the potential occurrence of the SR collision is
A means to interrupt one or more SRs currently being sent,
The device of claim 15, comprising means for transmitting one or more different SRs during an SR opportunity. 19. The device of claim 19, wherein the interrupted SR has a lower priority than the different SRs. The means for resolving the potential occurrence of the SR collision is
A means for detecting at least partially overlapping SR opportunities prior to the scheduled overlap, and
15. The apparatus of claim 15, comprising means for suspending SR transmission at one or more of the at least partially overlapping SR opportunities. The means for resolving the potential occurrence of the SR collision is
15. The device of claim 15, comprising means for suspending the SR of one or more of the low priority services of the plurality of services. Means for receiving control signals that identify one or more low priority services,
15. The apparatus of claim 15, further comprising means for suspending the SR of the one or more low priority services based on the control signal. 16. The apparatus of claim 16, wherein the one or more SRs are 1-bit SRs. 16. The apparatus of claim 16, wherein the one or more SRs are multi-bit SRs. 25. The apparatus of claim 25, wherein the multi-bit SR is a single SR transmission that signals the SR for multiple services. 16. The apparatus of claim 16, wherein the SR opportunity of the first service, the SR opportunity of the second service, or both may be an aperiodic SR opportunity. The device of claim 16, wherein at least one of the plurality of services is associated with a plurality of SR configurations. A non-temporary computer-readable storage medium on which a program code is recorded, wherein the program code is
A code that identifies multiple scheduling request (SR) configurations, where each SR configuration is associated with one or more of the services that the UE communicates with the base station through it. When,
It is a code for detecting the potential occurrence of SR collision based on the plurality of SR configurations, and the SR collision is the SR opportunity of the first service in the plurality of services and the SR opportunity in the plurality of services. The code that occurs when the SR opportunity of the second service overlaps at least partially,
The code for resolving the potential occurrence of the SR collision and
A non-temporary computer-readable storage medium that includes a code for communicating with the base station according to the resolution of the potential occurrence of the SR collision. Resolving the potential occurrence of the SR collision
The code for communication includes a code for determining the priority of the first service and the priority of the second service.
When the first service has a higher priority than the second service, the code for transmitting the SR associated with the first service and
When the second service has a lower priority than the first service, it includes a code for refraining from transmitting the SR associated with the second service.
The non-temporary computer-readable storage medium of claim 29. The code for resolving the potential occurrence of SR collisions
With the code to interrupt one or more SRs currently being sent,
The non-temporary computer-readable storage medium of claim 29, comprising a code for transmitting one or more different SRs during an SR opportunity. A device configured for wireless communication
A transmitter / receiver configured to communicate with a base station via a plurality of different services, wherein each service of the plurality of services has a corresponding scheduling request (SR) configuration.
The potential occurrence of SR collision is detected based on the plurality of SR configurations, and the SR collision is the SR opportunity of the first service in the plurality of services and the SR opportunity of the second service in the plurality of services. Occurs when SR opportunities overlap at least partially,
Resolve the potential occurrence of the SR collision and
A device comprising at least one processor configured to communicate with the base station according to the resolution of the potential occurrence of the SR collision. When the first service has a higher priority than the second service, the at least one processor further includes a transmitter configured to transmit the SR associated with the first service. , The second service when the second service has a lower priority than the first service to the transmitter by determining the priority of the first service and the priority of the second service. Further configured to refrain from sending SRs associated with the service of
The device of claim 32. 33. The device of claim 33, wherein the at least one processor causes the transmitter to refrain from transmitting, at least based on the transmit power level of the device. 32. Claim 32, wherein the at least one processor suspends transmission of one or more SRs and causes the transmitter to transmit one or more different SRs during SR opportunities. Equipment. 35. The apparatus of claim 35, wherein the suspended one or more SRs have a lower priority than the different one or more SRs. SR by having the at least one processor detect at least partially the at least partially overlapping SR opportunities and suspending SR transmission at one or more of the at least partially overlapping SR opportunities. 32. The apparatus of claim 32, further configured to resolve the potential occurrence of a collision. The at least one processor may, at least in part, resolve the potential occurrence of SR conflict by suspending the SR of one or more of the low priority services among the plurality of services. 32. The apparatus of claim 32, further configured. A receiver configured to receive a control signal that identifies one or more low priority services, wherein the at least one processor is based on the control signal to receive the one or more low priority services. 32. The device of claim 32, further comprising a receiver, which is configured to suspend the SR of the service. 33. The apparatus of claim 33, wherein the one or more SRs are 1 bit. 33. The apparatus of claim 33, wherein the one or more SRs are multi-bit SRs. 41. The apparatus of claim 41, wherein the multi-bit SR is a single SR transmission that signals the SR for multiple services. 33. The apparatus of claim 33, wherein the SR opportunity of the first service, the SR opportunity of the second service, or both may be an aperiodic SR opportunity. 33. The apparatus of claim 33, wherein at least one of the plurality of services is associated with a plurality of SR configurations.

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