JP2024505403A - Communication devices, infrastructure equipment and methods - Google Patents

Abstract

A method for transmitting control information by a communication device in a wireless communication network, the method comprising: directing multiple instances of downlink communication resources associated with semi-persistent resource allocation from infrastructure equipment of the wireless communication network; and determining whether the uplink communication resources allocated for the transmission of the first part of the acknowledgment information are invalid and cannot be used for the transmission of the first part of the acknowledgment information. and selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid; transmitting the first portion of the acknowledgment information using the selected second uplink communication resource, wherein the plurality of instances of the downlink communication resource communicate via a radio access interface. The first part of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource allocated for data transmission by the infrastructure equipment to the communication device. [Selection diagram] Figure 16

Description

TECHNICAL FIELD This disclosure relates to communication devices, infrastructure equipment, and methods for control information transmission within wireless communication networks.
This disclosure claims Paris Convention priority of European Patent Application No. 21152203.2, the entire contents of which are incorporated by reference into this disclosure.

The “background” description provided herein is for the purpose of generally presenting the background of the disclosure. The currently named inventor's work, to the extent that it is described in this Background section, is not expressly cited as prior art to the present invention, as are aspects of the specification that are not considered prior art at the time of filing. It is not allowed even implicitly.

Third- and fourth-generation mobile communication systems, such as those based on the 3GPP-defined UMTS and LTE (Long Term Evolution) architectures, are based on the simple voice communication systems provided by previous generations of mobile communication systems. and can support services more advanced than messaging services.
For example, with the improved air interface and expanded data rates provided by LTE systems, users can now enjoy services such as mobile video streaming and mobile video conferencing that were previously available only through fixed-line data connections. High data rate applications can be enjoyed.
Therefore, the demand for deploying such networks is strong, and the coverage area of these networks, ie, the geographical locations from which they can be accessed, is expected to expand more and more rapidly.

Future wireless communication networks will routinely and efficiently support communication with a wider range of devices associated with a wider range of data traffic profiles and types than current systems are optimized to support. It is expected.
For example, future wireless communication networks are expected to efficiently support communication with devices including reduced complexity devices, machine type communication (MTC) devices, high-definition video displays, virtual reality headsets, etc. be done.
Some of these different types of devices may be deployed in very large numbers, e.g. low complexity devices to support the "Internet of Things", typically with relatively high It may be associated with transmitting relatively small amounts of data with latency tolerance.

From this point of view, what may be called, for example, 5G or new radio (NR) systems/new radio access technology (RAT) systems (Non-Patent Document 1) and future versions/releases of existing systems, etc. It is anticipated that future wireless communication networks will be desired to efficiently support connectivity for a wide range of devices associated with different applications and different characteristic data traffic profiles.

However, technical challenges remain to be addressed to ensure that control information can be transmitted from communication devices to infrastructure equipment in a timely manner while efficiently using radio access interface resources.

3GPP TS 38.300 v. 15.2.0, "NR; NR and NG-RAN Overall Description; Stage 2(Release 15)", June 2018. Holma H. and Toskala A, "LTE for UMTS OFDMA and SC-FDMA based radio access", John Wiley and Sons, 2009. 3GPP TR 38.913, "Study on Scenarios and Requirements for Next Generation Access Technologies (Release 14)", vl4.3.0. 3GPP Tdoc RP- 190726, "Physical layer enhancements for NR ultra-reliable and low latency communication (URLLC)," Huawei, HiSilicon, RAN#83. 3GPP Tdoc RP-201310, "Revised WID: Enhanced Industrial Internet of Things (IoT) and ultra reliable and low latency communication (URLLC) support for NR," Nokia, Nokia Shanghai Bell, RAN#88e. 3GPP Tdoc Rl-2008842, "HARQ - ACK Feedback Enhancements for URLLC/IIoT," Nokia, Nokia Shanghai Bell, RANl#103e. 3GPP Tdoc R1-2008984, "Discussion on prioritized UE HARQ feedback enhancements for URLLC/IIoT," Intel, RANl#103e. European patent application EP20202915.3. 3GPP TS 38.213 "NR; Physical layer procedures for control", version 16.4.0.

The present disclosure can help address or alleviate at least some of the problems discussed above.

Each aspect and feature of the disclosure is defined in the following claims.

It is to be understood that both the foregoing general description and the following detailed description are illustrative of, but not limiting of, the technology. The described embodiments, together with further advantages, are best understood by reference to the following detailed description in conjunction with the accompanying drawings.

Like reference numerals indicate identical or corresponding parts throughout the several figures, and the following detailed description, when considered in conjunction with the accompanying drawings, will bring the present disclosure and its many attendant benefits to bear on the following detailed description. is better understood by reference to .
1 is a schematic representation of certain aspects of an LTE-type wireless telecommunications system configured to operate in accordance with certain embodiments of the present disclosure; 1 is a schematic representation of several example aspects of a new Radio Access Technology (RAT) wireless telecommunications system configured to operate in accordance with certain embodiments of the present disclosure. 1 is a schematic block diagram of an example of infrastructure equipment and communication devices configured in accordance with an example embodiment; FIG. 2 illustrates the transmission of acknowledgment information associated with a downlink transmission, the downlink transmission using dynamically allocated communication resources in accordance with conventional techniques; 3 illustrates the transmission of acknowledgment information related to downlink transmission of eURLLC data, where resources for transmission of acknowledgment information are allocated within subslots according to conventional techniques. 1 illustrates multiplexing of multiple parts of acknowledgment information associated with respective downlink resource instances within a single instance of uplink control channel resources according to the prior art; 3 illustrates the use of a subsequent allocation of control channel resources for the transmission of confirmation information that was not sent in a previous control channel allocation; This is because the previous control channel assignment constituted time slots that were not designated for uplink transmission according to the specific proposal. 5 illustrates additional communication resources selected in response to identification of an invalid instance of a control channel resource, according to embodiments of the present technology. 5 illustrates additional communication resources selected in response to identification of an invalid instance of a control channel resource, according to embodiments of the present technology. 5 illustrates additional communication resources selected in response to identification of an invalid instance of a control channel resource, according to embodiments of the present technology. 5 illustrates additional communication resources selected in response to identification of an invalid instance of a control channel resource, according to embodiments of the present technology. 5 illustrates additional communication resources selected in response to identification of an invalid instance of a control channel resource, according to embodiments of the present technology. 3 illustrates an additional communication resource selected in response to an identification of an invalid instance of a control channel resource according to an embodiment of the present technology, the additional communication resource including a plurality of resource instances; In accordance with embodiments of the present technology, an additional communications resource is selected in response to identifying an invalid instance of a control channel resource, the additional communications resource includes a plurality of resource instances, and the one or more resource instances are , is not used if it is possible to send the selected acknowledgment information without using all available resource instances. 5 illustrates an additional communication resource selected in response to an identification of an invalid instance of a control channel resource according to embodiments of the present technology, the additional communication resource including a plurality of resource instances, and the number of such resource instances; is indicated by receipt of a termination indication. 3 is a flowchart of a process that may be performed by a communication device according to embodiments of the present technology.

(Long Term Evolution Advanced Radio Access Technology (4G))
FIG. 1 illustrates a mobile device operating generally according to LTE principles, but which may also support other radio access technologies and which may be adapted to implement embodiments of the present disclosure as described herein. 1 provides a schematic diagram illustrating some basic functions of a telecommunications network/system 100.
Specific aspects of the various elements of Figure 1 and their respective modes of operation are well known and defined in the relevant standards managed by the 3GPP (RTM) organization, and many others on that topic. It is also described in books such as Holma H. and Toskala A.
Aspects of the operation of telecommunications networks that are not specifically described herein (e.g., with respect to specific communication protocols and physical channels for communicating between different elements) may be described, e.g. It is understood that it may be implemented according to any known technique, subject to the proposed modifications and additions.

Network 100 includes a plurality of base stations 101 connected to core network section 102. Each base station provides a coverage area 103 (eg, a cell) within which data can be communicated to and from communication devices 104. Data is transmitted from base stations 101 to communication devices 104 within their respective coverage areas 103 via wireless downlinks.
Data is transmitted from communication device 104 to base station 101 via a wireless uplink. The core network unit 102 transmits and receives data to and from the communication device 104 via each base station 101, and provides functions such as authentication, mobility management, and billing. A communication device may also be referred to as a mobile station, user equipment (UE), user terminal, mobile radio, terminal device, etc.
A base station, which is an example of network infrastructure equipment/network access node, is sometimes referred to as a transceiver station/NodeB/eNodeB, gNodeB (gNB), etc. In this regard, different terms are often associated with different generations of wireless telecommunication systems for elements that provide broadly equivalent functionality.
However, example embodiments of the present disclosure may equivalently be implemented in different generations of wireless telecommunication systems, such as 5G or new radio, as described below, and for the sake of brevity, the underlying network architecture Regardless, specific terms may be used. That is, the use of particular terms in connection with particular examples is intended to indicate that these examples are limited to the particular generation of networks most likely to be associated with that particular term. do not have.

(New wireless access technology (5G))
FIG. 2 shows a network architecture for a New RAT wireless communication network/system 200 based on previously proposed approaches that may also be adapted to provide functionality according to embodiments of the disclosure described herein. FIG.
New RAT network 200 shown in FIG. 2 includes a first communication cell 201 and a second communication cell 202. Each communication cell 201, 202 comprises a control node (centralized unit) 221, 222 that communicates with the core network component 210 via a respective wired or wireless link 251, 252.
Each control node 221, 222 is also in communication with a plurality of distributed units (radio access nodes/remote transmit/receive points (TRPs)) 211, 212 within the respective cell. Again, these communications may occur via respective wired or wireless links.
The distributed units 211, 212 serve to provide a wireless access interface to communication devices connected to the network.
Each distributed unit 211, 212 has a coverage area (radio access footprint) 241, 242, and the total coverage area 241, 242 of the distributed units 211, 212 under the control of the control node 221, 222 is Each distribution unit 211, 212, which together defines the coverage of the communication cells 201, 202, is configured to control a transmitter circuit (receiver circuit) for transmitting and receiving radio signals, and the respective distribution unit 211, 212. and a processor circuit (controller circuit).

From the perspective of extensive top-level functionality, the core network portion 210 of the New RAT communication network depicted in FIG. 2 can be broadly considered to correspond to the core network 12 depicted in FIG. 1. The respective control nodes 221, 222 and their associated distributed units/TRPs 211, 212 can be broadly considered to provide functionality corresponding to the base station 11 of FIG.
The term network infrastructure equipment/access node may be used to encompass these components as well as more traditional base station-type components of wireless communication systems. Depending on the application at hand, the responsibility for scheduling the transmissions to be scheduled on the radio interface between the respective distributed unit and the communication device lies with the control node/central unit and/or with the distributed unit/TRP. You can.

In FIG. 2, a communication device or UE 260 is shown within the coverage area of a first communication cell 201. This communication device 260 is thus able to exchange signals with the first control node 221 in the first communication cell via one of the distributed units 211 associated with the first communication cell 201. .
In some cases, communications for a given communications device are routed through only one of the distributed units, while in some other implementations, communications associated with a given communications device are routed through only one of the distributed units. It will be appreciated that it may be routed through more than one distributed unit, for example in soft handover scenarios (scenarios) and in other cases.

Although the example of FIG. 2 shows two communication cells 201, 202 and one communication device 260 for simplicity, in reality the system would serve a larger number of communication devices (each It is understood that a larger number of communication cells (supported by a control node and multiple distributed units) can be provided.

Figure 2 represents just one example of a proposed architecture for a New RAT communication system in which an approach according to the principles described herein may be adopted, and the features disclosed herein may be used for wireless communications with different architectures. It is further understood that it may also be applied in relation to systems.

Accordingly, the example embodiments of the present disclosure described herein may be implemented in wireless telecommunications systems/networks according to a variety of different architectures, such as the example architectures shown in FIGS. 1 and 2. Accordingly, it is understood that the particular wireless communication architecture in any given implementation is not of primary importance to the principles described herein.
In this regard, example embodiments of the present disclosure may generally be described in the context of communications between network infrastructure equipment/access nodes and communication devices, and may include specific aspects of the network infrastructure equipment/access nodes and communication devices. The nature of will depend on the network infrastructure for the implementation at hand.
For example, in some cases the network infrastructure equipment/access node may be an LTE type base station 11 as shown in FIG. 1 adapted to provide functionality in accordance with the principles described herein. In other examples, network infrastructure equipment/access nodes may be equipped with a control of the type shown in FIG. 2, adapted to provide functionality in accordance with the principles described herein. unit/control nodes 221, 222 and/or TRPs 211, 212.

A more detailed description of communication device 270 and exemplary network infrastructure equipment 272, which may be considered as a combination of gNB 101 or control node 221 and TRP 211, is shown in FIG.
As shown in FIG. 3, communication device 270 is shown transmitting uplink data to radio access interface infrastructure equipment 272, as indicated generally by arrow 274.
UE 270 is shown receiving downlink data transmitted by infrastructure equipment 272 via radio access interface resources, as indicated generally by arrow 288. Similar to FIGS. 1 and 2, infrastructure equipment 272 may correspond to core network 102 in FIG. 1 or core network 210 in FIG. ) connected to the core network 276.
Infrastructure equipment 272 may further be connected to other similar infrastructure equipment by radio-to-radio access network node interfaces, not shown in FIG.

Infrastructure equipment 272 includes a receiver 282 connected to antenna 284 and a transmitter 286 connected to antenna 284. Correspondingly, communication device 270 includes a controller 290 connected to a receiver 292 that receives signals from antenna 294 and a transmitter 296 that is also connected to antenna 294.

Controller 280 is configured to control infrastructure equipment 272 and includes processor circuitry (controller circuitry) that in turn comprises various subunits/subcircuits for providing desired functionality, as further described herein. ) may also be included.
These subunits may be implemented as separate hardware elements or as appropriately configured functions in a processor circuit.
Thus, controller 280 can be constructed from circuits suitably configured/programmed to provide the desired functionality described herein using conventional programming/configuration techniques for equipment in wireless telecommunication systems. Can be configured.
Transmitter 286 and receiver 282 may include signal processing, radio frequency filters, amplifiers, and circuitry according to conventional configurations. Transmitter 286, receiver 282 and controller 280 are shown schematically in FIG. 3 as separate elements for ease of presentation.
However, the functionality of these circuit elements can be improved using, for example, one or more suitably programmable computers or one or more suitably configured application-specific integrated circuits/circuits/chips/chipsets. It is understood that it may be provided in a variety of different ways.
It is understood that infrastructure equipment 272 may generally include various other elements related to its operational functionality.

Correspondingly, controller 290 of communication device 270 is configured to control transmitter 296 and receiver 292 and includes various subunits/units for providing functionality as further described herein. It may also include a processor circuit (controller circuit) that sequentially includes subcircuits. These subunits may be implemented as separate hardware elements or as appropriately configured functions in a processor circuit.
Accordingly, controller 290 may include circuitry suitably configured/programmed to provide the desired functionality using conventional programming/configuration techniques for equipment in wireless telecommunication systems.
Similarly, transmitter 296 and receiver 292 may include signal processing, radio frequency filters, amplifiers, and circuitry according to conventional arrangements.
Transmitter 296, receiver 292 and controller 290 are shown schematically in FIG. 3 as separate elements for ease of presentation.
However, the functionality of these circuit elements is limited, for example, by one or more suitably programmable computers, or by one or more suitably configured application-specific integrated circuits/circuits/chip(s)/chipsets. It is understood that the use of one or more can be provided in a variety of different ways.
As will be appreciated, the communication device 270 typically includes various other elements related to its operational functionality, such as a power source, a user interface, etc., which are not shown in FIG. 3 for the sake of brevity. .

Controllers 280, 290 may be configured to execute instructions stored on computer-readable media, such as non-volatile memory. The processing steps described herein may be performed, for example, by a microprocessor in conjunction with random access memory, which may be non-volatile memory, operating according to instructions stored on a computer-readable medium.

Two services defined in 5G are Ultra Reliable and Low Latency Communications (URLLC) and Enhanced Mobile Broadband (eMBB) services. URLLC transfers URLLC data packets (e.g. 32 bytes) with extremely low latency and high reliability.
On the other hand, eMBB requires a high data rate, eg 20Gbps with moderate latency and reliability (eg 99%-99.9%).

3GPP recently completed the Rel-16 work item (WI) on eURLLC (Non-Patent Document 4). It specifies features for high reliability and low latency services in 5G systems such as factory automation, transportation industry, and electrical power distribution. The features of eURLLC are further enhanced in the new Rel-17 WI (Non-Patent Document 5), where one of the objectives is to enhance HARQ-ACK feedback for PDSCH transmission.

When communication resources are allocated by a dynamic grant, downlink control information is sent to the communication device indicating the allocated communication resources and whether data transmitted using the allocated resources was received correctly. and parameters for determining uplink resources for transmitting acknowledgment information.

Uplink resources for transmitting acknowledgment information may be allocated on a physical uplink control channel (PUCCH).

The same PUCCH resource may be used for transmission of acknowledgment information associated with multiple downlink transmissions.

FIG. 4 shows the transmission of acknowledgment information associated with downlink transmissions, which use dynamically allocated communication resources according to conventional techniques.

In Figure 4, time progresses from left to right. Communication resources of the radio access interface are shown including downlink resources 404 and uplink resources 402. Uplink transmission 274 in FIG. 3 may be an example of a transmission using uplink resources 402. Downlink transmission 288 in FIG. 3 may be an example of a transmission using downlink resources 404.
In the time domain, communication resources are divided into time slots (n, n+1, etc.), and each time slot constitutes a symbol period. In the example of FIG. 4, each time slot includes 14 symbol periods.

Downlink control information (DCI) 410a, 410b, 410c allocates corresponding downlink communication resources 412a, 412b, 412c. Downlink communication resources 412a, 412b, 412c are used for transmitting data on a physical downlink shared channel (PDSCH).

Each DCI includes a numerical indication of parameter K1. The K1 parameter indicates the timeslot offset between the timeslot in which the downlink PDSCH resources 412a, 412b, 412c end and the timeslot in which communication resources are allocated for transmission of associated acknowledgment information. For example, the value of K1 may be indicated in the "PDSCH-to-HARQ_feedback timing indicator" field of the DL Grant. Downlink permissions may be encoded according to conventional DCI formats such as DCI Format 1_0, DCI Format 1_1 or DCI Format 1_2.

In the example of FIG. 4, the first DCI 410a in slot n allocates the first communication resource 412a starting and ending in slot n+1 and exhibits a K1 value of 3. Therefore, the acknowledgment information related to the downlink transmission (i.e., whether the data transmitted via the first communication resource 412a was correctly received and decoded) is determined in slot n+1+K1 = n+4. It will be sent.
Similarly, a second DCI 410b and a third DCI 410c allocate a second communication resource 412b and a third communication resource 412c, respectively, starting and ending in time slots n+2 and n+3, respectively, and Showing K1 values of 2 and 1. Accordingly, the communication device also determines that acknowledgment information associated with the second downlink transmission and the third downlink transmission on the second communication resource 412b and the third communication resource 412c should be transmitted in slot n+4. It can be determined that

In accordance with conventional techniques, acknowledgment information may be sent as part of a hybrid automatic repeat request acknowledgment (HARQ) process.

In this disclosure, the term "HARQ-ACK" (Hybrid Automatic Repeat Request Acknowledgment) refers to an acknowledgment indicating whether data transmitted over a single instance of a downlink communication resource was correctly received and decoded. Used to refer to part of response information. It will be appreciated that the techniques disclosed herein are applicable when acknowledged data transmission is performed with other than HARQ technology.
In the example of FIG. 4, there may be three separate HARQ-ACKs, each associated with first to third downlink communication resources 412a, 412b, 412c. If no multiplexing occurs (as described below), the HARQ-ACK may include acknowledgment information that would be sent using a single instance of the allocated PUCCH resource.

Conventional techniques, such as those standardized in 3GPP Release 15, allow communication devices to use at most one PUCCH within any time slot, even if multiple PUCCH resources are allocated that do not overlap in time. The resource is allowed to be used to send HARQ-ACK. (This constraint may not apply when using additional PUCCH resources for other purposes, such as sending scheduling requests).

A communication device can solve this constraint by multiplexing HARQ-ACK and transmitting using a single PUCCH resource instance. That is, a single PUCCH resource instance is used to send multiple HARQ-ACKs. Multiplexing may include combining HARQ-ACKs in any manner for transmission using a single PUCCH resource instance. For example, this may include concatenating HARQ-ACK acknowledgment information.

A multiplexing window may be defined, and HARQ-ACKs may be multiplexed together only when related to downlink communications occurring within the multiplexing window. In the example of FIG. 4, PUCCH multiplexing window 420 extends from slot n to slot n+3. Since each of the first to third downlink communication resources 412a, 412b, 412c is within the multiplexing window 420, the communication device is permitted to multiplex the corresponding HARQ-ACK.

PUCCH resources may be indicated in the "PUCCH Resource Indicator" (PRI) field of the DU grant (eg DCI). The communication device may select PUCCH resources based on the PRI indicated by the last (ie, last received) DCI that allocated downlink communication resources within the multiplexing window.

In the example of FIG. 4, the third DCI 410c indicates PUCCH resource 414. Therefore, in the example of FIG. 4, the communication device selects the PUCCH resource 414 and multiplexes HARQ-ACK based on the three HARQ-ACKs associated with the first to third downlink communication resources 412a, 412b, 412c. Generate an ACK and send the multiplexed HARQ-ACK using PUCCH resource 414 in timeslot n+4.
As mentioned above, the PUCCH resource 414 selected for multiplexed HARQ-ACK transmission is selected because the PUCCH resource 414 is indicated by the last DCI (third DCI 410c) in the multiplexing window. You can.

In some examples, each of the three DCIs 410a, 410b, 410c may allocate the same PUCCH resource 414 within timeslot n+4. However, in some examples, more than one PUCCH resource (not shown in FIG. 4) may be allocated by three DCIs 410a, 410b, 410c. Even if a communication device is allocated multiple PUCCH resources that do not overlap in time, the communication device may be limited to transmitting HARQ-ACK using at most one PUCCH resource within any time slot.
Therefore, one of the allocated PUCCH resources may be selected for the transmission of HARQ-ACK. In the example of FIG. 4, this is the PUCCH resource 414 allocated by the last (ie, last received) DCI that allocated downlink communication resources within the multiplexing window.

According to conventional techniques, such as those standardized in 3GPP Release 16, the time domain may be further divided into subslots, where each time slot includes a number of subslots (such as 2 or 7). A communication device may be allowed to transmit HARQ-ACK using multiple PUCCH resources within a timeslot if the PUCCH resources occur within different subslots.
The K1 value indicated by the DCI may suitably indicate the subslot in which the HARQ-ACK is transmitted.

FIG. 5 shows the transmission of acknowledgment information related to downlink transmission, where resources for transmission of acknowledgment information are allocated within subslots according to conventional techniques.

In the example of Figure 5, there are two subslots and seven symbol periods within each slot. Subslots are labeled m, m+1, m+2, etc.

The first DCI 510a allocates a first downlink communication resource 512a and indicates that K1 has a value of six. The first downlink communication resource 512a ends in subslot m+2, so the first HARQ-ACK is transmitted on the first PUCCH resource 514a in subslot m+2 + 6 = m+8. Ru.
Similarly, the second DCI 510b allocates a second downlink communication resource 512b and indicates that K1 has a value of 4. The second downlink communication resource 512b ends in subslot m+5, so the second HARQ-ACK is transmitted on the second PUCCH resource 514b in subslot m+5 + 4 = m+9. Ru.
Since the first PUCCH resource 514a and the second PUCCH resource 514b are in different subslots, the communication device uses the first PUCCH resource 514a and the second PUCCH resource 514b to transmit the respective HARQ-ACK. be allowed to (and actually send).

Traditionally, semi-persistent scheduling (SPS) involves the periodic allocation of communication resource instances for transmitting data to or by a particular communication device. SPS allocation instructions may be sent using RRC configuration signaling. SPS allocation may be enabled or disabled later.

When enabled, each instance of SPS allocation (herein referred to as an SPS instance) is pre-allocated without the need to send separate downlink grants for each instance. Thus, SPS allows efficient use of communication resources when data is transmitted periodically and/or with very low delay and reduced control overhead.

There is no need to use all assigned SPS instances to transmit communication devices or infrastructure equipment. However, according to the prior art, a communication device transmits acknowledgment information regarding each downlink SPS instance allocated for the transmission of data to the communication device, regardless of whether such transmission has occurred. may be required to do so.

A particular downlink SPS assignment may allocate resources on a physical downlink shared channel (PDSCH), such an assignment and a corresponding sequence of SPS instances are therefore referred to herein as an SPS PDSCH. However, it is understood that the SPS allocation may allocate resources on other channels.

According to conventional technology as specified in the 3GPP Release 15 specification, a communication device may be configured with at most one SPS PDSCH. After configuration, the SPS PDSCH may be activated by sending an activation DCI by the infrastructure equipment to the communication device.
The enabled DCI may be encoded according to conventional DCI format 1_0 or DCI format 1_1. The SPS PDSCH may be deactivated by the infrastructure equipment sending a deactivation DCI to the communication device. The cyclic redundancy check (CRC) of the enabled and disabled DCIs may be scrambled with an identifier associated with the SPS PDSCH, such as a CS Radio Network Temporary ID (CS-RNTI).

The communication device may be requested to send acknowledgment information to confirm receipt of the revocation DCI. On the other hand, no acknowledgment information is required to confirm receipt of the enabling DCI.

The enabling DCI may include a PDSCH_to_HARQ_feedback timing indicator that indicates the value of K1 for each subsequent instance of the SPS PDSCH until the SPS PDSCH is disabled. The K1 value applicable to an instance of an SPS PDSCH can only be changed by disabling and then enabling the SPS PDSCH. Subsequent activation is performed by a further activation DCI containing an updated K1 value indication.

According to the 3GPP Release 15 specification, a communicating device can be configured with at most one SPS PDSCH, and therefore up to two HARQ-ACKs (such as PUCCH format 0 and PUCCH format 1) are required for sending the acknowledgment information associated with an SPS PDSCH instance. ) may be used.
Sending acknowledgment information (HARQ-ACK) due to collision with PUCCH allocation (HARQ-ACK) for transmission of HARQ-ACK associated with dynamically granted PDSCH transmission (“DG-PDSCH”) If not possible, the SPS HARQ-ACK may be multiplexed with competing HARQ-ACKs and transmitted using the PUCCH allocation for the transmission of HARQ-ACKs associated with the DG-PDSCH.

Following the traditional approach as specified in the 3GPP Release 16 specification, a communication device can be configured with up to eight SPS PDSCHs. Each SPS PDSCH may be associated with an SPS configuration index, and the mapping between the SPS configuration index and the SPS PDSCH is indicated by RRC configuration signaling.

Each SPS PDSCH may be individually enabled using an enabling DCI. The activation DCI includes an indication of the associated SPS configuration index and an indication of the K1 value of that SPS PDSCH. Multiple SPS PDSCHs may be disabled using a single disabled DCI. Similar to Release 15, the CRCs of the enabled and disabled DCIs may be scrambled in the CS-RNTI, and acknowledgment information needs to be sent only in response to receipt of a disabled DCI.

Multiple HARQ-ACKs corresponding to different SPS PDSCH instances may be transmitted within the same slot or subslot based on the timing of the SPS PDSCH instances and associated K1 values. In particular, the K1 value may be different for each SPS PDSCH.

In such a scenario, the communication device may multiplex the competing HARQ-ACKs so that they can be transmitted using a single PUCCH instance. To enable such multiplexing, PUCCH formats 2, 3, and 4 can be used (in addition to PUCCH formats 0 and 1).

The order of HARQ-ACK in multiplex transmission can follow a predetermined sequence. For example, the order of HARQ-ACKs may be based on the SPS PDSCH Configuration index of the corresponding SPS PDSCH instance, and the order of the corresponding SPS PDSCH instances (where multiple HARQ-ACKs are associated with the same SPS PDSCH) May be based on slots. Since the value of K1 may be fixed for each SPS PDSCH, it is considered unlikely that HARQ-ACKs associated with two or more SPS PDSCHs with the same index will be multiplexed into one PUCCH transmission. .

Figure 6 shows SPS instances associated with three SPS PDSCHs and two PUCCH instances.

Five instances 802a, 802b, 802c, 802d, 802e of the first SPS PDSCH with K1 value of 3 are shown. Three instances 804a, 804b, 804c of the second SPS PDSCH are shown with a K1 value of 4. It is also shown that a single instance 806 of the third SPS PDSCH has a K1 value of 1.
No SPS PDSCH instance occurs before slot n. For example, the first to third SPS PDSCHs may be enabled such that the first instance occurs during or after slot n.

Based on the K1 value associated with the first SPS PDSCH, the first PUCCH resource 808a in slot n+3 is allocated to the HARQ- Allocated for sending ACK. During slot n+3, no other PUCCH resources are allocated for transmission by the communication device of HARQ-ACK of other PDSCH instances.
Accordingly, the communication device uses the first PUCCH resource 808a to transmit the HARQ-ACK associated with the first instance 802a of the first SPS PDSCH, as indicated by dashed arrow 812.

Based on the K1 value of the associated first SPS PDSCH, the PUCCH resource (e.g., second PUCCH resource 808b)
- the first instance 804a of the second SPS PDSCH (occurs in slot n),
- second instance 802b of the first SPS PDSCH (occurs in slot n+1) and
- 1st instance 806a of 3rd SPS PDSCH (occurs in slot n+3)
is assigned to slot n+4 for the transmission of the HARQ-ACK associated with.

Therefore, the HARQ-ACK for each of these three instances is multiplexed and transmitted using the second PUCCH resource 808b, as indicated by dashed arrows 810a, 810b, 810c.

In the examples of Figures 4, 5 and 6, the radio access interfaces have different, non-overlapping frequency ranges for the uplink (toward the infrastructure equipment) and the downlink (toward the infrastructure equipment), respectively. The communication resources 402, 404 operate in a frequency division duplexing (FDD) manner. Alternatively, the radio access interface may operate in a time division duplex (TDD) mode of operation. In TDD, communication resources within a single frequency range are used for uplink and downlink communications.

For example, if communication resources are divided into time slots and each slot includes multiple symbol periods, each symbol period may be designated for uplink or downlink use. Further, in accordance with certain prior art techniques, symbol periods may be designated as "invalid", ie, not available for either uplink or downlink transmission.

The designation of each symbol period may be done dynamically by infrastructure equipment. A slot format indicator (SFI) may be transmitted by infrastructure equipment to one or more communication devices within a cell to indicate the designation of future symbol periods.

Therefore, PUCCH resources determined according to the principles described above may occur (or constitute) during time slots that are not designated as uplink time slots. Since such PUCCH resources cannot be used for HARQ-ACK transmission, acknowledgment information associated with previous PDSCH instances may be delayed or not transmitted.

The problem of PUCCH resources overlapping with non-uplink symbol periods may be a particular problem related to PUCCH resources SPS PDSCH. This is because the K1 value of the SPS PDSCH may only be signaled when the SPS PDSCH is activated. It may be separated in time from subsequent PUCCH instances that overlap with periods other than uplink symbols.
In contrast, the PRI and K1 values of a dynamically granted PDSCH (and associated PUCCH) are transmitted in close time to the associated PUCCH, and therefore symbols for which the associated PUCCH is not designated as an uplink symbol period. Less likely to conflict with period.

Therefore, the PUCCH associated with the SPS PDSCH contains one or more resources that are not designated for uplink transmission and therefore needs to address the high probability that it will not be available for transmission by communication devices. As a result of the PUCCH not being used for transmission, unnecessary retransmissions of downlink data may be included because the infrastructure equipment did not receive confirmation that the downlink data was correctly received.

To overcome the above problems, infrastructure equipment provides downlink control information (DCI) that allocates resources for the transmission of multiple HARQ-ACKs encoded using a Type 3 HARQ-ACK codebook. It was proposed that it could be transmitted. The procedure for allocating resources for transmitting information using the Type 3 HARQ-ACK codebook is an LBT "listen-before-talk" procedure, although the previously allocated resources are within unlicensed spectrum. It has been introduced in the 3GPP Release 16 specification for the purpose of enabling the transmission of multiple HARQ-ACKs that are unavailable due to failure (see, for example, Section 9.1.4 of Non-Patent Document 9).

Various modifications to existing procedures for using type 3 HARQ-ACK codebooks have been proposed (Non-Patent Documents 6 and 7). This is to enable the transmission of HARQ-ACKs associated with SPS PDSCHs for which the PUCCH resources associated with SPS PDSCHs could not be used for transmission. This is because the PUCCH resource includes symbol periods designated for uplink transmission and symbol periods designated as invalid.

An example of the use of type 3 HARQ-ACK codebook transmission according to existing proposals is shown in Figure 7.

Figure 7 shows the use of subsequent PUCCH assignments for transmission of HARQ-ACKs that could not be transmitted in previous PUCCH assignments. This is because the previous PUCCH allocation consisted of time slots that were not designated for uplink transmission according to certain proposals [6 and 7]. FIG. 7 shows communication resources 902 of a radio access interface operating in TDD mode, where the communication resources are divided into five slots (labeled n, n+1,...n+4, each containing 14 symbol periods). ).
Certain symbol periods (indicated by diagonal hatching) are designated as uplink symbols, and one symbol period (indicated by horizontal hatching) is designated as invalid symbols. Other symbol periods are designated as downlink symbol periods, some of which (indicated by diagonal hatching) are used to transmit downlink control information using the Physical Downlink Control Channel (PDCCH). You can.

A first SPS PDSCH instance 904 is displayed in slot n. The K1 value associated with the first SPS PDSCH is 1. According to the K1 value of the first SPS PDSCH, the first PUCCH instance 908 for transmission of HARQ-ACK associated with the first SPS PDSCH instance 904 occurs in slot n+1. More specifically, in the example of FIG. 7, the first PUCCH instance 908 occurs from time t6 to time t9.
Determination of a specific PUCCH resource may be performed, for example, based on the PRI associated with the first SPS PDSCH. However, the period from time t6 to time t9 includes downlink symbols (from time t6 to time t7) and invalid symbols (from time t7 to time t8).

Therefore, as indicated by the superimposed “X”, it is not possible for the communication device to send HARQ-ACK during the first PUCCH instance 908.

The infrastructure equipment may determine that the first PUCCH instance 908 cannot be used by the communication device for transmission of HARQ-ACK, and in response, sends the second PUCCH instance 914 between time t18 and time t19. Can be scheduled. To indicate the assignment of these resources to the communication device, the infrastructure equipment transmits a DCI 912 indicating the assignment of the second PUCCH instance 914 from time t12 to time t13.

In response to receiving the DCI 912, the communication device transmits a HARQ-ACK associated with the SPS PDSCH instance 904 using the second PUCCH instance 914.

The inventors of the present technology have identified various drawbacks of the proposed scheme. First, the assignment of the second PUCCH instance 914 requires the transmission of an additional DCI. This requires available PDCCH capacity. For example, referring to the example of FIG. 7, it is possible that the second DCI before time t12 could not be transmitted. This is because the PDCCH resources from time t9 to time t10 may have been congested.

Furthermore, the use of additional PDCCH resources conflicts with the general goal of SPS allocation schemes (and similar periodic resource allocation) to minimize control signaling overhead.

Although the additional DCI 912 only represents a single resource instance, it may have to be robustly encoded to ensure that it is reliably decodable. Therefore, additional DCI 912 may require significant communication resources (eg, according to PDCCH aggregation level 4, 8, or 16).

These drawbacks generally increase the transmission latency of HARQ-ACK. This means that any necessary retransmissions of downlink data are either delayed as well or sent speculatively. Speculative (i.e. preemptive) retransmissions may occur when infrastructure equipment cannot determine whether downlink data was correctly received based on HARQ-ACK information, but retransmits the data in any case. .
This can potentially waste communication resources.

Therefore, there is a need to provide a technical solution to provide an effective and efficient technique for transmitting HARQ-ACK information, especially HARQ-ACK information related to SPS PDSCH transmission.

Embodiments of the present technology may provide a method of transmitting control information by a communication device in a wireless communication network, the method comprising:
receiving instructions from infrastructure equipment of the wireless communication network for a plurality of instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of the first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
transmitting the first portion of the acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first part of the acknowledgment information indicates the acknowledgment status of each instance of the downlink communication resource.

Embodiments of the present technology may provide an efficient method for transmitting acknowledgment information (e.g., HARQ-ACK) associated with instances of periodic downlink resource allocation, such as instances of SPS PDSCH. can.

In some embodiments, the selected second uplink communication resource includes one or more instances, and in one of the one or more instances, multiple portions of the acknowledgment are sent.

In some embodiments, no indication of a second uplink communication resource is received after the invalid uplink communication resource allocated for transmission of the first portion of acknowledgment information.

Accordingly, embodiments may provide a method for transmitting acknowledgment information with low latency and/or a method for efficiently using communication resources of a radio access interface.

Therefore, embodiments of the present technology provide a method for transmitting dropped HARQ-ACKs without requiring additional downlink signaling after the PUCCH allocated for transmitting dropped HARQ-ACKs. A method and apparatus for selecting additional (second) communication resources can be provided.

Embodiments of the present technology may provide for determining additional communication resources that can be used to transmit HARQ-ACK information if previous communication resources are unavailable. This determination can be performed by both the communication device and the infrastructure equipment after the original communication resource and before the additional communication resource while avoiding further downlink control signaling.

In some embodiments, there may be one or more of the following steps.
- trigger the selection of additional communication resources,
- select additional communication resources,
- select HARQ-ACK for transmission using additional resources, and
- Send selected HARQ-ACKs using additional resources.

In this disclosure, "invalid" refers to a communication resource that cannot be used for transmission of control information (e.g., an "invalid PUCCH"), e.g., due to invalidity or a conflict or overlap with a communication resource designated for downlink transmission. used for. Conversely, available communication resources (eg, "available PUCCH") refer to resources that can be used for transmission of one or more HARQ-ACKs. Thus, for example, a valid PUCCH will not collide or overlap with communication resources that are invalid or designated for downlink transmission.

The term "outstanding HARQ-ACK" is used to refer to a HARQ-ACK that has not yet been sent. A HARQ-ACK may be outstanding because the resources allocated for the initial transmission were actually invalid. For example, referring to FIG. 7, PUCCH resources 908 were initially allocated for the transmission of HARQ-ACK associated with SPS PDSCH instance 904. However, since the PUCCH resource 908 is invalid, the HARQ-ACK associated with the SPS PDSCH instance 904 is not sent and is therefore a "raw" HARQ-ACK.

(Additional communication resource selection trigger)
A communication device may determine that an uplink communication resource allocated for transmission of acknowledgment information associated with an instance of the communication resource allocated by semi-persistent scheduling (SPS) is invalid. Such an instance is referred to herein as an invalid PUCCH. However, it is understood that the scope of this disclosure is not limited to cases where uplink communication resources are on the PUCCH.

Acknowledgment information that would have been sent using an invalid PUCCH if the invalid PUCCH was not actually invalid is referred to herein as a related, ie discarded, HARQ-ACK. As mentioned above, the present disclosure is not limited to acknowledgment information generated according to the HARQ scheme. For example, one invalid PUCCH may be associated with multiple HARQ-ACKs if the transmission of acknowledgment information associated with multiple SPS instances occurs within one slot or subslot.

In some embodiments, additional communication resources are selected in response to identifying an invalid PUCCH.

In some embodiments, additional communication resources are selected only if one or more invalid PUCCH instances meet predetermined criteria.

In some embodiments, additional communication resources are selected if the number of associated HARQACKs associated with an invalid PUCCH instance is equal to or exceeds a predetermined HARQ-ACK threshold.

The predetermined HARQ-ACK threshold may be specified in an appropriate standard specification.

The predetermined HARQ-ACK threshold may be indicated in radio resource control (RRC) configuration signaling sent by the infrastructure equipment to the communication device.

The predetermined HARQ-ACK threshold may be indicated in a downlink control information (DCI) transmission sent by the infrastructure equipment to the communication device. The DCI may be the same one used to activate SPS assignments.

Invalid PUCCH instances may be associated with different SPS allocations (eg, with different SPS PDSCHs).

The communication device may maintain one or more counters of the number of associated HARQACKs associated with invalid PUCCH instances. When the value of this counter is equal to a predetermined HARQ-ACK threshold, the communication device may select additional communication resources and reset the counter. The counter may be reset to zero under certain conditions. In some embodiments, the counter is reset when all associated HARQ-ACKs associated with an invalid PUCCH instance are retransmitted.

In some embodiments, a timer of a predetermined period is started for each invalid PUCCH instance (eg, starts at the end of the PUCCH instance). If the timer is not running for an invalid PUCCH instance, the counter is reset. Therefore, if it is too late to retransmit a dropped HARQ-ACK, no additional communication resources are selected. In some embodiments, the only HARQ-ACKs considered when comparing to the predetermined HARQ-ACK threshold are those associated with invalid PUCCH instances for which the corresponding timer is still running.

FIG. 8 illustrates additional communication resources selected in response to an invalid PUCCH identification according to an embodiment of the present technology.

In the example of FIG. 8, the first SPS PDSCH instance 1002 occurs in slot n and is associated with a K1 value of 1. A second SPS PDSCH instance 1004 occurs in slot n+1 and is associated with a K1 value of 0.

HARQ-ACK for each instance 1002, 1004 of SPS PDSCH is transmitted in slot n+1 according to the respective K1 value. PUCCH resources 1006 for HARQ-ACK transmission are extended from time t7 to time t10.

However, time t7 to time t10 includes a symbol period from time t7 to time t8 designated as a downlink symbol, and a symbol period from time t8 to time t9 designated as an invalid symbol. As described elsewhere herein, the designation of a symbol period as uplink, downlink, or invalid may be indicated to a communication device by a slot format indicator (SFI) transmitted by the infrastructure equipment. good.

Therefore, the communication device determines that PUCCH resource 1006 is invalid.

In the example of FIG. 8, the predetermined HARQ-ACK threshold is equal to two. Since the number of associated HARQ-ACKs associated with the invalid PUCCH instance 1006 (second) is equal to or exceeds the predetermined HARQ-ACK threshold, the communication device Select additional communication resources 1008 to occur.

All symbol periods from time t15 to time t16 are designated as uplink symbols. Therefore, the communication device transmits the dropped HARQ-ACK using the selected additional communication resource 1008. The discarded HARQ-ACK indicates the acknowledgment status of data transmitted using the SPS PDSCH instances 1002, 1004.

Accordingly, embodiments of the present technology may provide for transmission of dropped HARQ-ACKs without additional signaling between communication devices and infrastructure equipment.

The infrastructure equipment may perform a corresponding determination regarding the PUCCH instance 1006 and may accordingly receive the dropped HARQ-ACK transmitted using additional communication resources.

The selection of communication resources 1006 is discussed in further detail below. In some embodiments, the selection of communication resources follows predetermined rules known to both the communication device and the infrastructure equipment.

In the example of FIG. 8, both dropped HARQ-ACKs are considered when determining the number of HARQ-ACKs for the purpose of determining whether to trigger the selection of additional communication resources.

In some embodiments, only a subset of HARQ-ACKs are counted.

For example, in some embodiments, HARQ-ACKs associated with a particular SPS PDSCH are not counted. In some embodiments, these SPS PDSCHs may be indicated by RRC signals transmitted by infrastructure equipment. In some embodiments, the communication device may determine whether a HARQ-ACK should be counted based on the logical channel associated with its associated SPS PDSCH. For example, a HARQ-ACK is only counted if it is associated with an SPS that is assigned a logical channel for providing URLLC services.

In some embodiments, each SPS PDSCH may be associated with a physical layer priority. For example, each SPS PDSCH can be associated with either a high physical layer priority or a low physical layer priority. In some such embodiments, the communication device may determine whether a HARQ-ACK should be counted based on the physical layer priority of its associated SPS PDSCH. For example, HARQ ACK is only counted if the associated SPS PDSCH has a high physical layer priority.

Additionally or alternatively, in some embodiments, the DCI indicating activation or deactivation of an SPS is relevant to that instance of the SPS in determining whether additional communication resources should be selected. It may also indicate whether HARQ-ACKs to be counted should be counted.

In some embodiments, the evaluation is performed for slots or subslots in which invalid PUCCHs occur. That is, HARQ-ACK is counted for the purpose of determining whether additional communication resources should be selected only if an invalid PUCCH would have been transmitted during the slot or subslot in which the invalid PUCCH occurs. be done. As an example, the predetermined HARQ-ACK threshold is 3. The first invalid PUCCH occurs at timeslot n, which is used for sending two HARQ-ACKs, and the second invalid PUCCH occurs at timeslot n+2, which is also used for sending two HARQ-ACKs. If used, the evaluation is performed separately in timeslots n and n+2, resulting in no additional communication resources being selected in either case.

FIG. 9 illustrates additional communication resources selected in response to an invalid PUCCH identification according to an embodiment of the present technology.

In the example of FIG. 9, the first SPS PDSCH instance 1102 occurs in slot n and is associated with a K1 value of 1. A second SPS PDSCH instance 1104 occurs at slot n+1 and is associated with a K1 value of 1. A third SPS PDSCH instance 1106 occurs in slot n+3 and is associated with a K1 value of 0. In the example of FIG. 9, the HARQ-ACK associated with the first SPS PDSCH is not in the subset of HARQ-ACKs that are counted to determine whether additional communication resources are selected. The predetermined HARQ-ACK threshold is 1.

The first, second, and third PUCCH resources 1112, 1114, 1116 are allocated for the transmission of HARQ-ACKs associated with the first to third SPS PDSCH instances 1102, 1104, 1106. However, the first and third PUCCH resources 1112, 1116 are invalid because they both overlap one or more symbol periods designated as downlink or invalid.

In response to determining that the first PUCCH resource 1112 is invalid, the communication device determines whether the number of dropped HARQ-ACKs is zero for the purpose of determining whether to select additional communication resources. It is determined that This is because the first PUCCH resource 1112 is for the transmission of the HARQ-ACK associated with the first SPS PDSCH, so the associated HARQ-ACK is not counted.

On the other hand, if the communication device determines that the third PUCCH resource 1116 is invalid, the number of dropped HARQ-ACKs is set to 1 for the purpose of determining whether to select an additional communication resource. It is determined that This is because the third PUCCH resource 1116 is for the transmission of HARQ-ACKs associated with the third SPS PDSCH, so the associated HARQ-ACKs are counted. Since the determined number of dropped HARQ-ACK(1) is greater than or equal to the predetermined HARQ-ACK threshold(1), additional communication resources 1120 are selected.

The communication device selects one or more HARQ-ACKs to transmit using additional communication resources, and from time t19 to time t20 uses additional communication resources 1120 to transmit the selected HARQ-ACKs. Send.

The selection of HARQ-ACK for transmission using additional communication resources is detailed below.

In some embodiments, additional communication resources are selected if the number of invalid PUCCH instances is equal to or exceeds a predetermined PUCCH threshold.

The predetermined PUCCH threshold may be specified in an appropriate standard specification.

The predetermined PUCCH threshold may be indicated in Radio Resource Control (RRC) configuration signaling sent by the infrastructure equipment to the communication device.

The predetermined PUCCH threshold may be indicated in a downlink control information (DCI) transmission sent by the infrastructure equipment to the communication equipment. The DCI may be the same one used to activate SPS assignments.

A communication device may maintain one or more counters of the number of invalid PUCCH instances. When the value of this counter is equal to a predetermined PUCCH threshold, the communication device may select additional communication resources and reset the counter.

The counter may be reset to zero under certain conditions. In some embodiments, the counter is reset when all associated HARQ-ACKs associated with an invalid PUCCH instance are retransmitted.

In some embodiments, a timer of a predetermined period is started for each invalid PUCCH instance (eg, starts at the end of the PUCCH instance). If the timer is not running for an invalid PUCCH instance, the counter is reset. Therefore, if it is too late to retransmit a dropped HARQ-ACK, no additional communication resources are selected. In some embodiments, the only HARQ-ACKs considered when comparing to the predetermined HARQ-ACK threshold are those associated with invalid PUCCH instances for which the corresponding timer is still running.

FIG. 10 illustrates additional communication resources selected in response to identification of multiple invalid PUCCH instances, according to embodiments of the present technology.

In the example of FIG. 10, the first SPS PDSCH instance 1202 occurs in slot n and is associated with a K1 value of 1. A second SPS PDSCH instance 1204 occurs at slot n+1 and is associated with a K1 value of 1.

First and second PUCCH resources 1212, 1214 are allocated for transmission of HARQ-ACKs associated with first and second SPS PDSCH instances 1102, 1104, respectively. However, the first and second PUCCH resources 1212, 1214 are invalid because they both overlap one or more symbol periods designated as downlink or invalid. In the example of FIG. 10, the predetermined PUCCH threshold is 2.

In accordance with an embodiment of this technique, the communication device determines that the first PUCCH instance 1212 is invalid and calculates that the cumulative number of invalid PUCCH instances is one. Since this is not equal to or exceeds the predetermined PUCCH threshold, no additional communication resources are selected.

The communication device also determines that the second PUCCH instance 1214 is invalid and, in response, calculates that the cumulative number of invalid PUCCH instances is two. Since this is equal to or exceeds the predetermined PUCCH threshold, additional communication resources 1220 are selected.

Additional communication resources 1220 are used to transmit one or more HARQ-ACKs that would otherwise be transmitted using an invalid PUCCH.

The selection of additional communication resources and the selection of HARQ-ACK will be explained in detail elsewhere.

In some embodiments, all invalid PUCCH instances are counted when evaluating the number of invalid PUCCH instances for the purpose of determining whether to select additional communication resources. In some embodiments, invalid PUCCH instances are not counted unless they meet predetermined criteria. This criterion may define a subset of PUCCH instances that are counted.

For example, a subset may correspond to a PUCCH instance associated with a subset of SPS PDSCHs. SPS PDSCHs within a subset of SPS PDSCHs can be configured by RRC signals. The activation or deactivation DCI of the SPS PDSCH may indicate whether the SPS PDSCH is within the subset.

In some embodiments, a subset of SPS PDSCHs are those used for transmission of traffic with certain quality of service requirements. For example, a subset of SPS PDSCHs may be used to transmit URLLC traffic. A subset of SPS PDSCHs may include those associated with particular logical channels. This particular logical channel may be the channel used for sending URLLC traffic.

In some embodiments, a subset of SPS PDSCHs is one that has a certain physical layer priority. For example, a subset of SPS PDSCHs may have high physical layer priority.

In the examples of FIGS. 8, 9 and 10, the selection of additional communication resources is triggered by an autonomous decision at the communication device. A corresponding determination can be made in the infrastructure equipment.

In some embodiments, selection of additional communication resources by the communication device includes triggering instructions from infrastructure equipment indicating that additional communication resources should be selected for transmission of one or more HARQ-ACKs. Responding to receiving. Sending of a trigger instruction by an infrastructure device may occur in response to any one of the criteria disclosed herein or for some other reason.

In some embodiments, the trigger indication is sent within a media access control (MAC) element (CE). In some embodiments, the MAC CE including the trigger indication is transmitted using an instance of downlink communication resources allocated as part of the SPS allocation. In some embodiments, if the communication device correctly decodes the MAC CE containing the trigger indication, it selects additional communication resources and uses the additional communication resources to transmit the corresponding HARQ-ACK.
The infrastructure equipment therefore determines that the communication device has received and decoded the MAC CE (because it sent it using additional communication resources) and, based on the HARQ-ACK, determines that the communication device has received and decoded the MAC CE using SPS resources. It is possible to determine whether other transmitted data has been correctly decoded.

If the communication device does not decode the MAC CE correctly, no additional communication resources will be selected and transmitted using them. In response, the infrastructure equipment determines that the communication device did not receive and decode the MAC CE (because it did not transmit it using additional communication resources) and that the communication device did not receive and decode the MAC CE using downlink SPS resources. It can be determined that other data sent was not correctly decoded.
This is because the MAC CE may be encoded more robustly than other data, or may need to be decoded in order to correctly decode other data.

The infrastructure equipment may retransmit the data based on determining whether the data transmitted using SPS resources was correctly received and decoded. For example, if the infrastructure equipment determines that the communication device did not transmit using additional communication resources, the infrastructure equipment may retransmit all data transmitted using downlink SPS resources. Can be done.

(selection of additional communication resources)
When the communication device decides to select additional communication resources, these are selected according to predetermined rules such that the infrastructure equipment also decides on the same additional communication resources.

In some embodiments, additional communication resources may be determined by the communication device without reference to signals transmitted by infrastructure equipment after the occurrence of an invalid PUCCH.

In some embodiments, the additional communication resources are comprised of a single instance of a contiguous resource.

In some embodiments, the additional communication resource includes multiple instances of the resource.

In some embodiments, additional communication resources are determined based on one or more additional resource indications transmitted by the infrastructure equipment. One or more additional resource indications may be sent in RRC signaling.

The additional communication resources are PUCCH resources or Physical Uplink Shared Channel (PUSCH) resources.

In some embodiments, the MAC CE sent by the infrastructure equipment includes an indication of additional communication resources. The MAC CE may be transmitted using the downlink resources of the SPS PDSCH instance. If the additional communication resource is a PUCCH resource, the indication of the additional communication resource is a PUCCH resource indicator indicating the resource in the slot or subslot, the slot or subslot in which the MAC CE was transmitted, and the additional communication resource. and a PDSCH-to-HARQ_feedback timing indicator that indicates the offset (within a slot or subslot) between the occurring slot or subslot.
The PRI and PDSCH-to-HARQ_feedback timing indicators may be transmitted within the PDSCH in a similar manner as used in the Successful Random Access Response (SuccessRAR) in a conventional two-step random access procedure.

If the additional communication resource is a PUSCH resource, the MAC CE may include an uplink grant. The uplink grant may be sent in a conventional four-step random access procedure in a manner similar to the transmission of an uplink grant sent in a random access response (RAR) message.

In some embodiments, additional communication resources are determined based on the PUCCH instance, and the additional communication resources are selected in response to determining that the PUCCH instance is invalid. When selecting additional communication resources in response to determining that multiple PUCCH instances are invalid, the additional communication resources may be determined based on the latest one of these.

For example, in some embodiments, the additional communication resources include resources for PUCCH instances that are offset in time by a predetermined offset. The predetermined offset may be an integer number of slots or subslots K _DROP .

In some embodiments, the value of K _DROP is independent of SPS PDSCH. That is, the value of K _DROP is the same regardless of the SPS PDSCH associated with the PUCCH instance that is determined to be invalid. In some embodiments, different values of K _DROP may be associated with different SPS PDSCHs. Accordingly, in response to determining that additional communication resources should be selected as a result of determining that the PUCCH instance is invalid, the communications device determines that the PUCCH instance is invalid based on the SPS PDSCH associated with the PUCCH instance. _DROP may be determined, thus determining additional communication resources.

The value of K _DROP may be indicated by dedicated signaling infrastructure equipment such as RRC signaling or DCI signaling to activate or deactivate the SPS. The value of K _DROP may be specified in the standard specification.

FIG. 11 illustrates additional communication resources selected in response to an invalid PUCCH identification according to an embodiment of the present technology.

In the example of FIG. 11, the first SPS PDSCH instance 1302 occurs in slot n and is associated with a K1 value of 1 and a K _DROP value of 1. A second SPS PDSCH instance 1304 occurs at slot n+1 and is associated with a K1 value of 1 and a K _DROP value of 2.

A first PUCCH resource 1312 and a second PUCCH resource 1314 are allocated for transmission of HARQ-ACK associated with the first SPS PDSCH instance 1302 and the second SPS PDSCH instance 1304. However, first PUCCH resource 1312 and second PUCCH resource 1314 are invalid because they both overlap one or more symbol periods designated as downlink or invalid.

In the example of FIG. 11, as a result of each dropped PUCCH instance 1312, 1314, the communication device determines that additional communication resources should be selected. This determination can follow any technique disclosed herein.

Based on the K _DROP value (1) associated with the first SPS PDSCH, the communication device determines the first additional communication resource 1322 as one slot after the first PUCCH instance 1312.

Similarly, based on the K _DROP value (2) associated with the second SPS PDSCH, the communication device determines a second additional communication resource 1324 as two slots after the second PUCCH instance 1314.

According to some embodiments, the communication device may also determine that the additional communication resources are invalid and, therefore, may refrain from transmitting using the additional communication resources.

In the example of FIG. 11, the communication device determines that the first additional communication resource 1322 is invalid because it includes resources from time t11 to time t12 designated as the uplink symbol period. In response, the communication device refrains from transmitting using the first additional communication resource 1322.

In the example of FIG. 11, the communication device determines that the second additional communication resource 1324 is not invalid. In response, the communication device uses the second additional communication resource 1322 to transmit one or more HARQ-ACKs.

The one or more HARQ-ACKs may include a HARQ-ACK that would have been sent using the second PUCCH instance 1314 if the second PUCCH instance 1314 was not invalid.

In some embodiments, HARQ-ACK consumes additional communication resources even if it was not sent using a PUCCH instance that was determined to be invalid, as described elsewhere herein. If the PUCCH instance is determined to be invalid, it triggers the selection of additional communication resources. For example, in the example of Figure 11, the second PUCCH instance 1312 is Additional communication resources 1324 may also be used.

In some embodiments, one or more parameters for determining additional communication resources may be indicated in the RRC signal transmitted by the infrastructure equipment. The parameters may include a duration of the additional communication resource, a K _DROP value associated with one or more SPS PDSCHs, and one or more of a number of physical resource blocks that constitute the additional communication resource.

Accordingly, embodiments of the present technology may provide selection of additional communication resources that differ in quantity or location (within a slot/subslot) from the PUCCH resource determined to be invalid.

In some embodiments, additional communication resources are selected from a series of periodic resource instances. The infrastructure equipment may, for example, send indications of these periodic resource instances in a manner similar to traditional SPS allocation signaling of uplink resources.

In some embodiments, periodic resource instances may be configured by RRC signals transmitted by infrastructure equipment. The RRC signal may indicate the range of each resource instance (eg, time and frequency resources) and their periodicity. The RRC signal may include a system frame number (SFN) offset to determine the start time of each instance.

Periodic resource instances can be configured individually for each SPS PDSCH. In some embodiments, a single set of periodic resource instances is configured for multiple SPS PDSCHs, and in some embodiments for all SPS PDSCHs for a given communication device. , a single series of periodic resource instances is configured.

The selected additional communication resource may be the next occurring instance of the series of periodic resource instances after the invalid PUCCH.

FIG. 12 illustrates additional communication resources selected in response to an invalid PUCCH identification according to an embodiment of the present technology.

In the example of FIG. 12, the first SPS PDSCH instance 1402 occurs in slot n and is associated with a K1 value of 1. A second SPS PDSCH instance 1404 occurs in slot n+1 and is associated with a K1 value of 1.

A first PUCCH resource 1412 and a second PUCCH resource 1414 are allocated for transmission of a HARQ-ACK associated with a first SPS PDSCH instance 1402 and a second SPS PDSCH instance 1404. However, first PUCCH resource 1412 and second PUCCH resource 1414 are invalid because they both overlap one or more symbol periods designated as downlink or invalid.

The series of periodic resource instances includes first to third resource instances 1422, 1424, 1426 that can be selected as additional communication resources and is applicable to all SPS PDSCHs configured for communication devices. . It is understood that this series may extend before and after the period shown in FIG. 12.

In the example of FIG. 12, as a result of each dropped PUCCH instance 1412, 1414, the communication device determines that additional communication resources should be selected. This determination can follow any technique disclosed herein.

In response to determining that the first PUCCH instance 1412 in slot n+1 is invalid, the communication device may select the next in the series of periodic resources, which is the second instance 1424 of those shown in FIG. Select an instance of and occur in slot n+2. However, the communication device determines that this resource instance is also invalid, but it overlaps the symbol period from time t7 to time t8 and is designated as an invalid symbol.
In response, in accordance with some embodiments of the present technology, the next instance of the series of periodic resources, the third instance 1426 of those shown in FIG. 12, is selected, occurring at slot n+4.

The communication device may determine that the third instance 1426 of the series is not invalid.

In response to determining that the second PUCCH instance 1414 in slot n+2 is invalid, the communication device selects the next instance in the series of periodic resources, which is the third instance 1426 of those shown in FIG. and occurs in slot n+4.

Therefore, in the example of FIG. 12, the communication device selects the same instance of a series of periodic resources for transmitting two HARQ-ACKs as an additional communication resource. The two HARQ-ACKs are associated with a first SPS PDSCH instance 1402 and a second SPS PDSCH instance 1404 (ie, indicating an acknowledgment status).

From time t18 to time t19, the communication device transmits using the third instance of the series of periodic resources 1426 and sends two HARQ-ACKs.

The example of FIG. 12 illustrates an embodiment in which iterative selection of an additional communication resource may be made in response to determining that the instance of the additional communication resource is itself invalid. However, the present disclosure is not so limited, and in other embodiments, such iterative selection is not performed. In some embodiments, iterative selection is performed in conjunction with other techniques disclosed herein.

The example of FIG. 12 also shows that multiplexes of HARQ-ACK would have been sent using different PUCCH instances if these PUCCH instances were not invalid. However, the present disclosure is not so limited, and in other embodiments such multiplexing is not performed. In some embodiments, multiplexing is performed in conjunction with other techniques disclosed herein.

In some embodiments, additional communication resources are added to and separated from the communication resources allocated for transmission of acknowledgment information by the communication device. For example, referring to FIG. 12, a set of periodic resource instances 1422, 1424, 1426 may not be allocated for transmission of control information by a communication device other than in certain situations where the PUCCH is determined to be invalid. be.

Accordingly, embodiments of the present technology may provide selection of additional communication resources that would not otherwise be allocated for transmission by a communication device.

In some embodiments, the additional communication resources are uplink resources allocated to the communication device for transmission of other control information or other HARQ-ACKs. This uplink resource is allocated on the PUCCH and may be allocated for the transmission of acknowledgment information related to data transmitted using the PDSCH instance. A PDSCH instance may be an instance of an SPS PDSCH or may be assigned by dynamic grant.
The PDSCH may be different from the SPS PDSCH associated with the invalid PUCCH that triggered the selection of additional communication resources.

In some embodiments, additional communication resources may be selected in accordance with one or more techniques disclosed in co-pending document 8, the contents of which are incorporated herein by reference in their entirety. Incorporated.

In the examples of Figures 9, 10, 11 and 12, the communication device determines that additional communication resources should be selected and, accordingly, additional communication resources for transmission of one or more HARQ-ACKs. Selecting a single instance of an additional communication resource in response to determining that only a single instance of the resource is used.

In some embodiments, two or more instances of additional communication resources are selected and used for transmission of one or more HARQ-ACKs.

For example, in some embodiments, the communication device may select multiple instances N _SP of additional communication resources. These instances may be periodic.

In some embodiments, the number of instances of N _SP is predetermined. A predetermined number of instances N _SP can be signaled by RRC signaling infrastructure equipment or in the DCI with the possibility of activating or deactivating the SPS PDSCH. In some embodiments, the predetermined number of instances N _SP is specified in an appropriate standard specification.

The periodicity of the instance may be signaled or specified in the RRC signal or DCI. In some embodiments, the periodicity is one slot (or one subslot if the dropped PUCCH is allocated on a subslot basis).

FIG. 13 illustrates additional communication resources selected in response to an invalid PUCCH identification according to an embodiment of the present technology, where the additional communication resources include multiple resource instances.

In the example of FIG. 13, the first SPS PDSCH instance 1502 occurs in slot n and is associated with a K1 value of 1. A second SPS PDSCH instance 1504 occurs in slot n+1 and is associated with a K1 value of 1.

A first PUCCH resource 1512 and a second PUCCH resource 1514 are allocated for transmission of HARQ-ACK associated with the first SPS PDSCH instance 1502 and the second SPS PDSCH instance 1504, respectively. The first PUCCH resource 1512 is valid and the communication device sends a HARQ-ACK indicating acknowledgment status of data received during the first SPS PDSCH instance 1502.

However, the second PUCCH resource 1514 is invalid because it overlaps one or more symbol periods designated as downlink or invalid. In the example of FIG. 13, the criteria for selecting additional communication resources are met and the communication device selects the additional communication resources.

In the example of FIG. 13, the number of instances N _SP is 3, the periodicity is 1 slot, and the position of the resource within the slot and the offset of the first slot in which the resource is generated are also determined in advance.

Therefore, the communication device selects the three instances 1522, 1524, 1526 shown in FIG. 13 as additional communication resources.

The communication device determines that the first instance 1522 is actually invalid because it overlaps with the period t15-t16 designated as an invalid symbol period. Therefore, the communication device does not transmit using the first instance 1522.

In the example of FIG. 13, the communication device uses a second instance 1524 and a third instance 1526 of additional communication resources to provide HARQ- Send ACK. These transmissions may use repeated encoding where the same information is encoded and transmitted using each of the second 1524 and third 1526 instances.

In the example of FIG. 13, each instance of additional communication resources that is not disabled is used to send a HARQ-ACK. In some embodiments, fewer instances may be used if it is possible to send all of the selected HARQ-ACKs using fewer instances.

FIG. 14 illustrates additional communication resources selected in response to the identification of an invalid PUCCH according to embodiments of the present technology, the additional communication resources including a plurality of resource instances, where the one or more instances are: Not used if it is possible to send selected HARQ-ACKs without using all valid instances.

The example in FIG. 14 is similar to that shown in FIG. In particular, the number of instances N _SP is 3, the periodicity is 1 slot, and the position of the resource within the slot and the offset of the first slot in which the resource occurs are also predetermined.

Therefore, as in the example of FIG. 13, the communication device selects three instances as additional communication resources, of which only the first two 1522, 1524 are shown in FIG. 14.

The communications device determines that the only HARQ-ACK transmitted using additional communications resources is to indicate acknowledgment status of data transmitted using the second SPS PDSCH instance 1504 . This determination can follow techniques disclosed elsewhere in this specification.

The communication device further determines whether the resources of one instance of the selected additional communication resources are sufficient to send the HARQ-ACK. This determination may be based on the selected encoding and modulation scheme. The selected encoding and modulation scheme may be the one used to transmit the HARQ-ACK using the second PUCCH resource 1514, if they are valid.

The communication device transmits the HARQ-ACK using the earliest available instance of additional communication resources required to transmit the HARQ-ACK.

As a result, in the example of FIG. 14, the communication device uses the second instance 1524 of additional communication resources to send the HARQ-ACK and does not send it using either the first or third instance.

In the examples of FIGS. 13 and 14, the number of instances of the additional communication resource N _SP is predetermined, although the communication device may actually transmit using only a subset of these.

In some embodiments, the number of instances may be indicated dynamically by the infrastructure equipment. In some such embodiments, the number of instances is indicated by a termination indication sent by the infrastructure equipment. The termination indication indicates termination of the series of instances of the additional communication resource. For example, a termination indication may be sent at a time T _TERM to indicate that no additional instances of the communication resource will occur after a certain time T _TERM .

FIG. 15 illustrates additional communication resources selected in response to the identification of an invalid PUCCH according to embodiments of the present technology, where the additional communication resources include a plurality of resource instances, and the number of such resource instances is indicated by receipt of a termination indication.

Similar to the example of FIG. 13, a first SPS PDSCH instance 1502 occurs in slot n and is associated with a K1 value of 1. A second SPS PDSCH instance 1504 occurs in slot n+1 and is associated with a K1 value of 1.

A first PUCCH resource 1512 and a second PUCCH resource 1514 are allocated for transmission of a HARQ-ACK associated with a first SPS PDSCH instance 1502 and a second SPS PDSCH instance 1504. The first PUCCH resource 1512 is valid and the communication device sends a HARQ-ACK indicating acknowledgment status of data received during the first SPS PDSCH instance 1502.

The second PUCCH resource 1514 is invalid because it overlaps one or more symbol periods designated as downlink or invalid. As in the example of FIG. 13, the criteria for selecting additional communication resources are met and the communication device selects the additional communication resources.

As in the example of FIG. 13, the additional communication resource includes multiple resource instances. However, the number of resource instances is determined based on receipt of a termination indicator sent by the infrastructure equipment.

In the example of FIG. 15, the termination indicator is sent at DCI 1530 at time t19, indicating that no additional communication resource instances occur after the time the termination indicator is received (t20).

In response to determining that the second PUCCH resource 1514 is invalid, the communication device selects an additional communication resource that includes at least the first instance 1522. The number of instances of additional communication resources is initially unknown since no termination indicator has been received.

The first instance 1522 is valid, so the communication device uses the first instance 1522 to send the HARQ-ACK. The communication device may also use the second instance 1524 to send the HARQ-ACK since no termination indicator is received before the second instance 1524.

From time t19 to time t20, the communication device receives a DCI 1530 that constitutes a termination indicator. In response, the communication device determines that no additional instances of communication resources occur after time t20 and refrains from further sending HARQACKs.

The latency of the HARQ-ACK transmission does not depend on the exact timing of the transmission of the termination indication, since the termination indication can be sent after the additional communication resources used to send the HARQ-ACK. Therefore, embodiments of the present technology can minimize the delay in transmitting HARQ-ACK. Since the number of resource instances is dynamically indicated, the infrastructure equipment can dynamically allocate the appropriate number of resource instances in each case where additional communication resources are selected.

In some embodiments, two or more of the techniques described above and the techniques shown in FIG. 11, FIG. 12, FIG. 13, FIG. 14, or FIG. 15 may be combined. Accordingly, the communication device may determine additional communication resources. In some embodiments, the HARQ-ACK selected for transmission may be transmitted using only the earliest of these.

(Sending HARQ-ACK using additional communication resources)
In accordance with embodiments of the present technology, additional communication resources are selected and some or all of these are used for transmitting one or more HARQ-ACKs.

In some embodiments of the present technology, the communication device selects one or more HARQ-ACKs to be transmitted using additional communication resources.

In some embodiments, all dropped acknowledgment information (eg, HARQ-ACK) associated with data transmitted using SPS PDSCH resources is selected for transmission. An example of this is shown in FIG. In this example, the HARQ-ACK associated with both the first and second SPS PDSCH instances 1302, 1304 is discarded even though it is an invalid PUCCH 1314 that triggered the selection of additional communication resources 1324. did.

In some embodiments, a subset of discarded HARQ-ACKs associated with data transmitted using SPS PDSCH resources is selected for transmission. The subset may be configured by infrastructure equipment and indicated to communication devices in RRC signals. In some embodiments, the MAC CE may include an indication of which HARQ-ACK should be selected. For example, a MAC CE includes a bitmap that includes multiple bits, each bit corresponding to a different HARQ process.
If the bit is set to a first value (eg, 1), the discarded HARQ-ACKs associated with the corresponding HARQ process are in the subset. Discarded HARQ-ACKs associated with HARQ operations whose corresponding bits are set to a second value (eg, 0) are not in the subset.

The infrastructure equipment may additionally or May be shown alternatively.

In some embodiments, HARQ-ACK is selected for transmission according to one or more techniques disclosed in Co-Pending Application (Non-Patent Document 8).

In some embodiments, a communication device is configured with multiple HARQ processes. In some embodiments, the HARQ-ACK associated with each configured HARQ process is selected for transmission.

In some embodiments, the HARQ-ACK associated with each SPS PDSCH is selected for transmission.

In some embodiments, the communication device determines for each SPS PDSCH whether the SPS PDSCH meets predetermined criteria. In this case, the HARQ-ACK associated with that SPS PDSCH is selected for transmission. In some embodiments, the predetermined criteria may be as described above to determine whether an invalid PUCCH is considered in determining whether to select additional communication resources based on the associated SPS PDSCH. It may be something that has been done.

If more than one HARQ-ACK is selected for transmission, the two or more HARQ-ACKs may be encoded using an appropriate codebook. An example of a suitable codebook is the Type 3 HARQ-ACK codebook, which is already defined for transmitting multiple HARQ-ACKs using a single instance of communication resources. Following traditional techniques, when using the Type 3 HARQ-ACK codebook, all configured HARQ processes' HARQ-ACKs are sent regardless of whether any of these HARQ-ACKs were previously discarded. be done.

However, according to embodiments of the present technology, no additional DCI is sent before the additional communication resources and multiple HARQ-ACKs encoded using a Type 3 HARQ-ACK codebook are sent. Indicates the allocation of additional communication resources used for

Accordingly, embodiments of the present technology may reduce the amount of required downlink control channel resources.

FIG. 16 is a flowchart of a process that may be performed by a communication device according to an embodiment of the present technology.

The process begins in step S1902, where the communication device receives an SPS configuration indication that defines an SPS PDSCH. The SPS configuration can specify the instance resources of the SPS PDSCH instance and the PUCCH resources used for transmitting HARQ-ACK information associated with data transmitted using the SPS PDSCH instance.

The SPS configuration can be traditional SPS configuration signaling, such as using RRC configuration signaling.

In some embodiments, in a subsequent step (not shown in FIG. 16), the communication device may receive an activation indication indicating that the SPS PDSCH has been activated. While the SPS PDSCH is activated, communication devices monitor instances of the SPS PDSCH and attempt to use these resources to decode data that may be transmitted by infrastructure equipment. In some embodiments, the infrastructure equipment uses the activated instance of the SPS PDSCH to communicate with the communication device, e.g., because there is no data associated with the SPS PDSCH buffered at the infrastructure equipment for transmission. You can refrain from sending data to.

The process continues to step S1904. In this step, the communication device uses the instance of the SPS PDSCH to determine the acknowledgment status of the transmitted data. A communication device may use the instance to determine that data was not sent, that data was sent but was not correctly received and decoded, or that data was correctly sent, received, and decoded. In some embodiments, if the communication device determines that there is no data transmitted using the instance, the process ends for that instance.
The process may proceed to step S1904 for further instances of the same or different SPS PDSCHs. Otherwise, the process continues to step S1906.

In some embodiments, if the communication device determines that there is no data transmitted using the instance, the process proceeds to step S1906 and the corresponding HARQ-ACK is a negative acknowledgment (NACK) for that instance. show.

In step S1906, the communication device determines whether the PUCCH resource allocated for transmitting the HARQ-ACK including the acknowledgment information determined in step S1904 is invalid. For example, because the radio access interface is a TDD interface and the PUCCH resources overlap with resources designated for downlink transmission or are designated as invalid (i.e., no transmission occurs). there is a possibility.
Therefore, the HARQ-ACK including the acknowledgment information determined in step S1904 may be determined to be a "drop HARQ-ACK."

Subsequently, in step S1908, the communication device determines whether the PUCCH instance satisfies predetermined criteria. Otherwise, control returns to step S1904 for additional SPS PDSCH instances. The predetermined criteria may be based on the SPS PDSCH associated with the PUCCH instance, as described elsewhere herein.

If the communication device determines in step S1908 that the PUCCH instance meets the predetermined criteria, control moves to step S1910. In step S1910, the communication device determines whether trigger criteria for selecting additional communication resources are met. As explained elsewhere, this may be based on the cumulative number of discarded HARQ-ACs or the cumulative number of invalid PUCCH instances.

If the trigger criteria are not met, control returns to step S1904 for further SPS PDSCH instances.

If the trigger criteria are met, control moves to step S1912. In step S1912, additional communication resources are selected. In some embodiments, this may include multiple instances of additional communication resources. In some embodiments, the number of instances of the additional communication resource may not be known in step S1912, and the first instance is selected.

Control then proceeds to step S1914, where the communication device selects one or more HARQ-ACKs to transmit using additional communication resources. The one or more HARQ-ACKs may include a discarded HARQ-ACK that includes the confirmation information determined in step S1904. The one or more HARQ-ACKs may include one or more previously transmitted discarded HARQ-ACKs and/or one or more other HARQ-ACKs.

Control then proceeds to step S1916. In step S1916, the communication device determines whether the first (or only) instance of the selected additional communication resource is invalid. The selected additional communication resource instance may be invalid because it overlaps with a downlink and/or invalid time period of the TDD radio access interface.

If the selected additional communication resource instance is invalid (“yes”), control transfers to step S1922. Otherwise (“no”), control moves to step S1918.

In step S1918, the communication device encodes the selected HARQ-ACKs and transmits them using the additional communication resource instances. In some embodiments, multiple HARQ-ACKs may be encoded using a type 3 HARQ-ACK codebook and transmitted using a single instance of additional communication resources.

In some embodiments, the HARQ-ACK sent in step S1918 may be sent in a previous instance of the additional communication resource in a previous iteration of step S1918.

Control then proceeds to step S1920. In step S1920, the communication device determines which HARQ-ACKs identified in step S1914 are present and which HARQ-ACKs have not been transmitted. If so (“yes”), control moves to step S1922. If not (“No”), control moves to step S1924, and the process ends.

In step S1922, the communication device determines whether there are additional instances of communication resources that are not used. This may include determining whether a predetermined number of instances of N _SP have been reached and/or whether a termination indicator has been received.

If one or more instances of the additional communication resource remain that are not used ("yes"), control continues to step S1926, where the next instance of the additional communication resource is selected. The process then returns to step S1916 and continues with the selected next instance of the additional communication resource.

In step S1922, it is determined that there are no more unused instances of additional communication resources, control moves to step S1924, and the process ends.

In some embodiments, in step S1924, the process may continue to step S1904 for further instances of SPS PDSCH.

An example of the process has been described above. However, the scope of this disclosure is not limited to particular combinations and orders of steps, and in some embodiments, one or more of the described steps may be omitted, combined in a different order, or modified. You can do it. Features or steps described in one example context may be combined with features or steps described in another example context.

For example, in some embodiments, the number of instances of additional communication resources is one, and thus steps S1920, S1922, and S1926 are omitted, with control passing from step S1918 to step S1924 (or step S1906). Good too. In some embodiments, there may be no criteria applicable to the PUCCH instance, and step S1908 may be omitted and control passes directly from step S1906 to step S1910.

Techniques and principles disclosed above in the context of one embodiment may be combined with techniques and principles disclosed in the context of one or more other embodiments.

Embodiments of the present technology further provide a method for operating infrastructure equipment of a wireless communication network. In some such embodiments, the infrastructure equipment is configured to enable the communication device to select additional communication resources in response to determining whether criteria for selecting the additional communication resources are met. parameters can be sent. In some embodiments, the communication device selects at least an initial instance of the additional communication resource without receiving an assignment signal for the additional communication resource after the communication device determines that the criteria are met. It is now possible to do so.
In some embodiments, the infrastructure equipment may transmit parameters to enable the communication device to determine whether criteria for selecting additional communication resources are met.

In some embodiments, the infrastructure equipment may send a termination indicator to enable the communication device to determine whether further instances of additional communication resources are available.

In some embodiments, the infrastructure equipment is configured to determine that the criteria for selecting the additional communications resource have been met and/or for determining the criteria for selecting the additional communications resource. , may perform one or more of the determinations described herein. If the infrastructure equipment determines that the trigger criteria are met and selects the additional communication resource in a manner consistent with the method used by the communication device, the infrastructure equipment uses the additional communication resource to transmit data transmitted by the communication device. One or more HARQ-ACKs can be received and decoded.

Thus, a method is described for transmitting control information by a communication device in a wireless communication network, the method comprising:
receiving instructions from infrastructure equipment of the wireless communication network for a plurality of instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of the first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
transmitting the first portion of the acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first part of the acknowledgment information indicates the acknowledgment status of each instance of the downlink communication resource.

A method for receiving control information at infrastructure equipment by a communication device in a wireless communication network is described, the method comprising:
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of the first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
receiving the first portion of the acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first part of the acknowledgment information indicates the acknowledgment status of each instance of the downlink communication resource.

Corresponding equipment, circuits, and computer-readable media have also been described.

Although this disclosure focuses in some respects on implementation in LTE-based and/or 5G networks to provide specific examples, the same principles may be applied to other wireless telecommunications systems. is understood.
Accordingly, although the terminology used herein is generally the same or similar to the terminology of the LTE and 5G standards, the present teachings are not limited to current versions of LTE and 5G, and are applicable to any application based on LTE or 5G. It may equally be applied to any suitable equipment that is not and/or is not compliant with LTE, 5G, or any other future versions of other standards.

Note that the various example approaches described herein may rely on predetermined/predefined information in the sense of being known by both the base station and the communication device. Such predetermined/predefined information is typically, e.g. by definition in an operating standard for wireless telecommunication systems, or e.g. in system information signaling or in radio resource control setup method signaling. may be established in previously exchanged signaling between the base station and the communication device, in connection with the SIM application, or in information stored in the SIM application.
That is, the particular manner in which the relevant predetermined information is established and shared between the various elements of the wireless telecommunications system is not of primary importance to the principles of operation described herein. Additionally, the various example approaches described herein rely on information exchanged/communicated between various elements of a wireless telecommunications system, and such communication depends on, for example, the particular signaling protocols and As to the type of communication channel used, this may generally be done according to conventional techniques, unless the context requires otherwise.
That is, the particular manner in which relevant information is exchanged between the various elements of a wireless telecommunications system is not of primary importance to the principles of operation described herein.

The principles described herein are not only applicable to a particular type of communication device, but are more generally applicable with respect to any type of communication device, e.g., any type of communication device that receives multicast or broadcast data. It is understood that the invention is applicable with respect to communication devices.

Further particular preferred embodiments of the invention are set out in the accompanying independent and dependent claims. It is understood that features of the dependent claims may be combined with features of the independent claims in combinations other than those expressly recited in those claims.

Accordingly, the foregoing discussion merely discloses and describes exemplary embodiments of the invention. As will be understood by those skilled in the art, the invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Accordingly, the present disclosure is intended to be illustrative, but not to limit the scope of the invention or any other claims. This disclosure includes any readily discernible variations of the teachings herein and partially defines the scope of the foregoing claim terms so that inventive subject matter is not exclusive to the public.

Each feature of the disclosure is defined by the numbered paragraphs below.
Paragraph 1. A method for transmitting control information by a communication device in a wireless communication network, the method comprising:
receiving from infrastructure equipment of the wireless communication network an indication of a plurality of instances of downlink communication resources associated with semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of acknowledgment information is invalid;
transmitting the first portion of the acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource.
Paragraph 2. One or more instances of uplink communication resources allocated for transmission of a portion of acknowledgment information, including the first portion of said acknowledgment information, are invalid and used for transmission of said acknowledgment information; The method described in paragraph 1, including determining whether the method described in paragraph 1.
Paragraph 3. The selecting step of selecting the second uplink communication resource is such that the number of instances of the uplink communication resource allocated for the transmission of the portion of the acknowledgment information that is invalid is greater than the first predetermined 2. The method of paragraph 2, wherein the method is responsive to determining whether a threshold value is exceeded.
Paragraph 4. Determining the number of pieces of acknowledgment information to which the one or more instances of the uplink communication resource are allocated;
determining whether the number of parts of the acknowledgment information exceeds a second predetermined threshold;
Recited in paragraph 2 or 3, wherein the step of selecting the second uplink communication resource is in response to the step of determining whether the number of parts of the acknowledgment information exceeds the second predetermined threshold. the method of.
Paragraph 5. The method of any one of paragraphs 2-4, comprising determining whether one or more instances of the uplink communication resource meet predetermined criteria.
Paragraph 6: If the uplink communication resource instance is allocated for transmission of acknowledgment information related to downlink data, and the downlink data satisfies a second predetermined criterion, the uplink communication resource instance , satisfies said predetermined criteria.
Paragraph 7. The method of paragraph 6, wherein said second predetermined criterion is met if the downlink data is associated with a first logical channel.
Paragraph 8. A method according to paragraphs 6 or 7, wherein the second predetermined criterion is met if the downlink data is associated with a first physical layer priority.
Paragraph 9. further comprising receiving an indication of the second predetermined criteria;
9. A method according to paragraph 7 or 8, wherein this instruction is transmitted by the infrastructure equipment using Radio Resource Control (RRC) signals.
Paragraph 10. further comprising the step of receiving a trigger instruction;
the trigger instruction is transmitted using an instance of the downlink communication resource associated with a semi-persistent resource allocation;
10. The method of any one of paragraphs 1-9, wherein the step of selecting the second uplink communication resource is in response to receiving the trigger indication.
Paragraph 11. The method of paragraph 10, wherein the triggering instruction is indicated in a media access (MAC) control element (CE) transmitted by the infrastructure equipment using the instance of the downlink communication resource.
Paragraph 12. The method according to any one of paragraphs 1 to 11, wherein after each instance of the downlink communication resource, an indication of the second uplink communication resource is not received.
Paragraph 13. The method according to any one of paragraphs 1 to 12, wherein said second uplink communication resource is on a physical uplink shared channel.
Paragraph 14. The method according to any one of paragraphs 1 to 12, wherein said second uplink communication resource is on a physical uplink control channel.
Paragraph 15. The step of selecting the second uplink communication resource comprises selecting one indicated by a radio resource control (RRC) signal transmitted by the infrastructure equipment before each instance of the downlink communication resource. A method according to any one of paragraphs 1 to 14 based on the first set of parameters above.
Paragraph 16. Selecting said second uplink communication resource comprises using each instance of said downlink communication resource to select one or more second uplink communication resources indicated in a signal transmitted by said infrastructure equipment. A method as described in any one of paragraphs 1 to 16 that is based on a set of parameters.
Paragraph 17. According to paragraph 16, wherein the second parameter is indicated in a medium access (MAC) control element (CE) transmitted by the infrastructure equipment using the respective instance of the downlink communication resource. the method of.
Paragraph 18. Any one of paragraphs 1 to 17, wherein the step of selecting the second uplink communication resource is based on the uplink communication resource allocated for transmission of the first part of the acknowledgment information. The method described in.
Paragraph 19. The step of selecting the second uplink communication resource comprises selecting the slot or subslot containing the uplink communication resource allocated for the transmission of the first part of the acknowledgment information and the second uplink communication resource. 19. The method according to any one of paragraphs 1 to 18, wherein the method is based on a predetermined number of slots or subslots between the slots or subslots containing link communication resources.
Paragraph 20. The method of paragraph 19, wherein the predetermined number of slots or subslots are common to multiple semi-permanent resource allocations.
Paragraph 21. The method of paragraph 19 or 20, further comprising receiving an indication of the predetermined number of slots or subslots.
Paragraph 22. The method of paragraph 21, wherein the indication of the predetermined number of slots or subslots is transmitted by the infrastructure equipment in RRC signaling.
Paragraph 23. The method of paragraph 21, wherein the indication of the predetermined number of slots or subslots is transmitted by the infrastructure in downlink control information (DCI).
Paragraph 24. The method according to any one of paragraphs 1 to 23, wherein the second uplink communication resource is selected from a plurality of periodic resource instances.
Paragraph 25. The method of any one of paragraphs 1-24, wherein the second uplink communication resource is comprised of multiple instances of uplink communication resources.
Paragraph 26. The method of paragraph 25, wherein a number of instances is predetermined in the plurality of instances of the uplink communication resource.
Paragraph 27. The infrastructure equipment receives a termination indicator transmitted at a time;
26. The method of paragraph 25, wherein the termination indicator indicates that none of the plurality of instances of the uplink communication resource occur after the time.
Paragraph 28. Determining whether one of the plurality of instances of the uplink communication resource is invalid;
If one of the plurality of instances of the uplink communication resource is determined to be invalid, transmitting the acknowledgment information using one of the plurality of instances of the uplink communication resource. and the method described in any one of paragraphs 25 to 27.
Paragraph 29. The method of paragraphs 1-28 further comprising selecting one or more portions of acknowledgment information, including a first portion of the acknowledgment information, for transmission using the second uplink communication resource. Any one of the methods listed.
Paragraph 30. determining a number of multiple instances of the uplink communication resource required to transmit the selected one or more portions of the acknowledgment information;
transmitting the first portion of the acknowledgment information using the selected second uplink communication resource, using the determined number of the plurality of instances of the uplink communication resource; 30. The method of paragraph 29, by transmitting the selected portion of the acknowledgment information.
Paragraph 31. Further comprising encoding one or more portions of the acknowledgment information according to a codebook for transmitting multiple portions of the acknowledgment information using a single instance of a communication resource. ,
transmitting the first portion of the acknowledgment information using the second uplink communication resource by transmitting the encoded one or more portions of the acknowledgment information; The method described in paragraph 29.
Paragraph 32. Any of paragraphs 29-31, wherein selecting one or more portions of the acknowledgment information includes selecting acknowledgment information for each of a plurality of configured hybrid automatic repeat request (HARQ) processes. or the method described in one.
Paragraph 33. Selecting one or more portions of the acknowledgment information includes selecting the acknowledgment information associated with a plurality of semi-permanent resource allocations including the semi-permanent resource allocation. Paragraphs 29- The method described in any one of 31.
Paragraph 34. Selecting one or more portions of said acknowledgment information may include one or more portions of said acknowledgment information allocated for transmission of data meeting said second predetermined criteria, including said semi-permanent resource allocation. A method as described in any one of paragraphs 29 to 31 comprising selecting acknowledgment information related to semi-persistent resource allocation.
Paragraph 35. Selecting one or more portions of said acknowledgment information is associated with one or more semi-permanent resource allocations that satisfy a third predetermined criterion, including said semi-permanent resource allocations. A method as described in any one of paragraphs 29 to 31, including selection of acknowledgment information.
Paragraph 36. The method of any one of paragraphs 29-35, wherein selecting one or more portions of acknowledgment information comprises selecting only discarded acknowledgment information.
Paragraph 37. each of the one or more semi-persistent resource assignments, whether acknowledgment information associated with the semi-persistent resource assignments is selected for transmission using said second uplink communication resource; further comprising receiving a MAC CE containing instructions about the method according to any one of paragraphs 1-36.
Paragraph 38. A method for receiving, at infrastructure equipment, control information by a communication device in a wireless communication network, the method comprising:
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of acknowledgment information is invalid;
receiving the first portion of acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource.
Paragraph 39. A communication device operating in a wireless communication network,
a transmitter configured to transmit a signal over a radio access interface provided by infrastructure equipment of the wireless communication network;
a receiver configured to receive signals on the wireless access interface;
The communication device includes:
receiving an indication of a plurality of instances of downlink communication resources related to semi-persistent resource allocation from infrastructure equipment of the wireless communication network;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
a controller configured to operably control the transmitter and the receiver to transmit the first portion of acknowledgment information using the selected second uplink communication resource; and,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. The communications device.
Paragraph 40. A circuit for a communication device operating in a wireless communication network,
a transmitter circuit configured to transmit a signal over a radio access interface provided by infrastructure equipment of the wireless communication network;
receiver circuitry configured to receive signals on the wireless access interface;
The communication device includes:
receiving an indication of a plurality of instances of downlink communication resources related to semi-persistent resource allocation from infrastructure equipment of the wireless communication network;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
controlling the transmitter circuitry and the receiver circuitry to be operable to transmit the first portion of acknowledgment information using the selected second uplink communication resource; A configured controller circuit,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
A first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource.
Paragraph 41. Infrastructure equipment for use in wireless communication networks and providing a radio access interface, comprising:
a transmitter configured to transmit a signal via the wireless access interface;
a receiver configured to receive the signal;
The infrastructure equipment is
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
a controller configured to operably control the transmitter and the receiver to receive the first portion of acknowledgment information using the selected second uplink communication resource; and,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. Infrastructure equipment.
Paragraph 42. Circuits for infrastructure equipment used in wireless communication networks and providing radio access interfaces, comprising:
transmitter circuitry configured to transmit a signal via the wireless access interface;
a receiver circuit configured to receive the signal;
The infrastructure equipment is
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
controlling the transmitter circuitry and the receiver circuitry to be operable to receive the first portion of acknowledgment information using the selected second uplink communication resource; A configured controller circuit,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. The circuit for infrastructure equipment.

Further particular preferred embodiments of the invention are set out in the accompanying independent and dependent claims. It is understood that features of the dependent claims may be combined with features of the independent claims in combinations other than those expressly recited in those claims.

Claims (42)

A method for transmitting control information by a communication device in a wireless communication network, the method comprising:
receiving from infrastructure equipment of the wireless communication network an indication of a plurality of instances of downlink communication resources associated with semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of acknowledgment information is invalid;
transmitting the first portion of the acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. determining whether one or more instances of uplink communication resources allocated for the transmission of a portion of the acknowledgment information, including the first portion of the acknowledgment information, are invalid and cannot be used for the transmission of the acknowledgment information; The method of claim 1, comprising determining. The selecting step of selecting the second uplink communication resource is performed when the number of instances of the uplink communication resource allocated for transmission of a portion of acknowledgment information that is invalid exceeds a first predetermined threshold. 3. The method according to claim 2, wherein the method is responsive to determining whether or not the amount exceeds. determining a number of pieces of acknowledgment information to which the one or more instances of the uplink communication resource are allocated;
determining whether the number of parts of the acknowledgment information exceeds a second predetermined threshold;
3. The step of selecting the second uplink communication resource is in response to the step of determining whether the number of parts of the acknowledgment information exceeds the second predetermined threshold. Method. 3. The method of claim 2, comprising determining whether one or more instances of the uplink communication resource meet predetermined criteria. If the uplink communication resource instance is allocated for transmission of acknowledgment information related to downlink data, and the downlink data satisfies a second predetermined criterion, the uplink communication resource instance 6. The method according to claim 5, wherein a predetermined criterion is met. 7. The method of claim 6, wherein the second predetermined criterion is met if downlink data is associated with a first logical channel. 7. The method of claim 6, wherein the second predetermined criterion is met if downlink data is associated with a first physical layer priority. further comprising receiving an indication of the second predetermined criteria;
8. The method of claim 7, wherein this indication is transmitted by the infrastructure equipment using Radio Resource Control (RRC) signals. further comprising receiving a trigger instruction;
the trigger instruction is transmitted using an instance of the downlink communication resource associated with a semi-persistent resource allocation;
2. The method of claim 1, wherein selecting the second uplink communication resource is responsive to receiving the trigger indication. 11. The method of claim 10, wherein the triggering indication is indicated in a medium access (MAC) control element (CE) transmitted by the infrastructure equipment using the downlink communication resource instance. 2. The method of claim 1, wherein no indication of the second uplink communication resource is received after each instance of the downlink communication resource. The method of claim 1, wherein the second uplink communication resource is on a physical uplink shared channel. The method of claim 1, wherein the second uplink communication resource is on a physical uplink control channel. The step of selecting the second uplink communication resource includes selecting one or more second uplink communication resources indicated in a radio resource control (RRC) signal transmitted by the infrastructure equipment before each instance of the downlink communication resource. 2. The method of claim 1, wherein the method is based on one set of parameters. Selecting the second uplink communication resource uses each instance of the downlink communication resource to one or more second set of parameters indicated in a signal transmitted by the infrastructure equipment. The method according to claim 1, which is based on. 17. The method of claim 16, wherein the second parameter is indicated in a medium access (MAC) control element (CE) transmitted by the infrastructure equipment using the respective instance of the downlink communication resource. . 2. The method of claim 1, wherein selecting the second uplink communication resource is based on the uplink communication resource allocated for transmission of the first portion of acknowledgment information. The step of selecting the second uplink communication resource includes selecting a slot or subslot containing the uplink communication resource allocated for transmission of the first part of the acknowledgment information and the second uplink communication resource. 2. The method of claim 1, wherein the method is based on a predetermined number of slots or subslots between the slots or subslots including: 20. The method of claim 19, wherein the predetermined number of slots or subslots are common to multiple semi-permanent resource allocations. 20. The method of claim 19, further comprising receiving an indication of the predetermined number of slots or subslots. 22. The method of claim 21, wherein the indication of the predetermined number of slots or subslots is transmitted by the infrastructure equipment in RRC signaling. 22. The method of claim 21, wherein the indication of the predetermined number of slots or subslots is transmitted by the infrastructure in downlink control information (DCI). The method of claim 1, wherein the second uplink communication resource is selected from a plurality of periodic resource instances. The method of claim 1, wherein the second uplink communication resource is comprised of multiple instances of uplink communication resources. 26. The method of claim 25, wherein a number of instances is predetermined in the plurality of instances of the uplink communication resource. the infrastructure equipment receiving a termination indicator transmitted at a time;
26. The method of claim 25, wherein the termination indicator indicates that none of the plurality of instances of the uplink communication resource occur after the time. determining whether one of the plurality of instances of the uplink communication resource is invalid;
If one of the plurality of instances of the uplink communication resource is determined to be invalid, transmitting the acknowledgment information using one of the plurality of instances of the uplink communication resource. 26. The method of claim 25, further comprising the step of: avoiding. 2. The method of claim 1, further comprising selecting one or more portions of acknowledgment information, including the first portion of acknowledgment information, for transmission using the second uplink communication resource. determining a number of multiple instances of the uplink communication resources needed to transmit the selected one or more portions of the acknowledgment information;
transmitting the first portion of the acknowledgment information using the selected second uplink communication resource, using the determined number of the plurality of instances of the uplink communication resource; 30. The method of claim 29, by transmitting the selected portion of the acknowledgment information. further comprising encoding one or more portions of the acknowledgment information according to a codebook for transmitting multiple portions of the acknowledgment information using a single instance of communication resources;
transmitting the first portion of the acknowledgment information using the second uplink communication resource by transmitting the encoded one or more portions of the acknowledgment information; The method according to claim 29. 30. The method of claim 29, wherein selecting one or more portions of acknowledgment information includes selecting acknowledgment information for each of a plurality of configured hybrid automatic repeat request (HARQ) processes. 30. Selecting one or more portions of the acknowledgment information comprises selecting the acknowledgment information associated with a plurality of semi-permanent resource allocations including the semi-permanent resource allocation. Method. Selecting one or more portions of the acknowledgment information includes one or more semi-persistent resources allocated for transmission of data that meet the second predetermined criteria, including the semi-persistent resource allocation. 30. The method of claim 29, comprising selecting acknowledgment information associated with resource allocation. Selecting one or more portions of the acknowledgment information includes acknowledgment information associated with one or more semi-persistent resource allocations that satisfy a third predetermined criterion, including the semi-permanent resource allocation. 30. The method of claim 29, comprising selecting. 30. The method of claim 29, wherein selecting one or more portions of acknowledgment information includes selecting only discarded acknowledgment information. an indication for each of the one or more semi-persistent resource allocations whether acknowledgment information associated with the semi-persistent resource allocations is selected for transmission using the second uplink communication resource; The method of claim 1, further comprising receiving a MAC CE containing a MAC CE. A method for receiving control information by a communication device in a wireless communication network at an infrastructure equipment, the method comprising:
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of acknowledgment information is invalid;
receiving the first portion of acknowledgment information using the selected second uplink communication resource;
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. A communication device operating in a wireless communication network,
a transmitter configured to transmit a signal over a radio access interface provided by infrastructure equipment of the wireless communication network;
a receiver configured to receive signals on the wireless access interface;
The communication device includes:
receiving an indication of a plurality of instances of downlink communication resources related to semi-persistent resource allocation from infrastructure equipment of the wireless communication network;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
a controller configured to operably control the transmitter and the receiver to transmit the first portion of acknowledgment information using the selected second uplink communication resource; and,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. The communications device. A circuit for a communication device operating in a wireless communication network, the circuit comprising:
a transmitter circuit configured to transmit a signal over a radio access interface provided by infrastructure equipment of the wireless communication network;
receiver circuitry configured to receive signals on the wireless access interface;
The communication device includes:
receiving an indication of a plurality of instances of downlink communication resources related to semi-persistent resource allocation from infrastructure equipment of the wireless communication network;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
controlling the transmitter circuitry and the receiver circuitry to be operable to transmit the first portion of acknowledgment information using the selected second uplink communication resource; A configured controller circuit,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
A first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. Infrastructure equipment for use in a wireless communication network and providing a wireless access interface, the infrastructure equipment comprising:
a transmitter configured to transmit a signal via the wireless access interface;
a receiver configured to receive the signal;
The infrastructure equipment is
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
a controller configured to operably control the transmitter and the receiver to receive the first portion of acknowledgment information using the selected second uplink communication resource; and,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. Infrastructure equipment. A circuit for infrastructure equipment for use in a wireless communication network and providing a wireless access interface, the circuit comprising:
transmitter circuitry configured to transmit a signal via the wireless access interface;
a receiver circuit configured to receive the signal;
The infrastructure equipment is
sending instructions for multiple instances of downlink communication resources related to semi-persistent resource allocation;
determining whether uplink communication resources allocated for transmission of a first portion of acknowledgment information are invalid and cannot be used for transmission of the first portion of acknowledgment information;
selecting a second uplink communication resource in response to a determination that the uplink communication resource allocated for transmission of the first portion of the acknowledgment information is invalid;
controlling the transmitter circuitry and the receiver circuitry to be operable to receive the first portion of acknowledgment information using the selected second uplink communication resource; A configured controller circuit,
Equipped with
the plurality of instances of the downlink communication resources are allocated for data transmission by the infrastructure equipment to the communication device via a radio access interface;
The first portion of the acknowledgment information indicates an acknowledgment status of each instance of the downlink communication resource. The circuit for infrastructure equipment.

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