Dynamic toggling of physical downlink control channel (PDCCH) interleaving

Abstract

A solution for dynamically toggling physical downlink control channel (PDCCH) interleaving includes a base station receiving radio measurement reports from user equipment (UE), determining that radio reception by the UE meets a threshold based at least on the radio measurement reports, and ceasing interleaving of data on the PDCCH based at least on the threshold being met. The base station continuously monitors the radio measurement reports from the UE and resumes interleaving of data transmitted on the PDCCH based at least on the radio measurement reports indicating that radio reception by the UE meets a second threshold. In some examples, UEs are managed in broadcast groups (e.g., UEs within a common range in a cell sector), and interleaving or ceasing interleaving is based on a determination of whether all UEs in the broadcast group can do without interleaving.

Description

[Background technology]

[0001] The Physical Downlink Control Channel (PDCCH) is an important logical radio channel through which a user equipment (UE) knows which radio resource elements in the time and frequency domains to use to ascertain scheduling information for downlink (DL) broadcast and DL / uplink (UL) unicast data transmissions. For example, the PDCCH transmits DL Control Information (DCI). Due to the importance of the information the PDCCH carries, it is advantageous to ensure that the PDCCH is a sufficiently robust channel to easily decode the PDCCH even in unfavorable radio conditions.

[0002] One technique used to ensure the robustness of the PDCCH is interleaving. The use of interleaving is intended to make the PDCCH more resistant to burst errors that may exceed the correction capability of the channel's error correction. The idea is that, upon de-interleaving, a single burst error (which would otherwise overwhelm the error correction) becomes a series of shorter errors that are spread across a longer section of the data stream and are therefore correctable, as each of the multiple smaller errors is within the correction capability of the error correction.

[0003] However, interleaving incurs at least two costs. First, deinterleaving consumes battery power in the UE because it requires the UE to expend processing cycles beyond just decoding symbols. Second, deinterleaving reduces spectral efficiency and introduces communication delays. When data is interleaved, the symbols are spread out in time, and each symbol takes longer to transmit than if it were not interleaved. On reception, decoding of the symbols is again delayed by the time required for deinterleaving. Summary of the Invention [Means for solving the problem]

[0004] The following summary is provided to illustrate examples disclosed herein, but is not meant to limit all examples to any particular configuration or sequence of operations.

[0005] A solution for dynamically toggling physical downlink control channel (PDCCH) interleaving includes: interleaving, by a base station, data transmitted in the physical downlink control channel (PDCCH); receiving, by the base station, a first plurality of radio measurement reports from a first user equipment (UE); determining, by a wireless network based on at least the first plurality of radio measurement reports, that radio reception by the first UE satisfies a first threshold; based on at least the determination that the radio reception by the first UE satisfies the first threshold, notifying, by the base station, the first UE that it is ceasing PDCCH interleaving; and transmitting, by the base station, data in the PDCCH without interleaving. [Brief explanation of the drawings]

[0006] The disclosed examples are described below with reference to the accompanying drawing figures listed below.

[0007] [Figure 1]FIG. 1 illustrates an exemplary arrangement for advantageously dynamically toggling physical downlink control channel (PDCCH) interleaving. [Figure 2] FIG. 2 shows a message sequence diagram of exemplary messages that may occur in the example deployment of FIG. [Figure 3A] FIG. 3A shows various thresholds used by the example arrangement of FIG. [Figure 3B] FIG. 3B illustrates various thresholds used by the example arrangement of FIG. [Figure 3C] FIG. 3C illustrates various thresholds used by the example arrangement of FIG. [Figure 4] FIG. 4 illustrates a flowchart of exemplary operations associated with the example arrangement of FIG. [Figure 5] FIG. 5 illustrates another flowchart of exemplary operations associated with the example arrangement of FIG. [Figure 6] FIG. 6 illustrates a block diagram of a computing device suitable for implementing various aspects of the present disclosure.

[0008] Corresponding reference characters indicate corresponding parts throughout the drawings, where practical. References to specific examples throughout this disclosure are provided for illustrative purposes and are not intended to be limiting of all implementations, nor should they be construed as excluding the existence of additional implementations that incorporate the recited features. DETAILED DESCRIPTION OF THE INVENTION

[0009] A solution for dynamically toggling physical downlink control channel (PDCCH) interleaving includes a base station receiving radio measurement reports from user equipment (UE), determining, based at least on the radio measurement reports, that radio reception by the UE meets a threshold, and ceasing interleaving of data on the PDCCH based at least on the threshold being met. The base station continues to monitor the radio measurement reports from the UE and resumes interleaving of data transmitted on the PDCCH based at least on the radio measurement reports indicating that radio reception by the UE meets a second threshold. In some examples, UEs are managed in broadcast groups (e.g., UEs within a common range in a cell sector), and interleaving or ceasing interleaving is based on determining whether all UEs in the broadcast group can reliably decode the PDCCH without interleaving.

[0010] Aspects of the present disclosure improve the efficiency of cellular communications by both extending UE battery life and reducing communication latency. This is achieved by reducing the need for the UE to perform power-intensive computations, thereby preventing deinterleaving delays, and by dynamically toggling PDCCH interleaving off when practical and back on when channel reliability dictates. This reduces overhead for both the UE and the base station, and improves the spectral efficiency of the wireless network, when radio conditions permit. For example, specific measures to facilitate this advantageous operation include, at least, the base station notifying the UE to discontinue PDCCH interleaving based on a determination that radio reception by the UE meets a threshold, and the base station transmitting data on the PDCCH without interleaving.

[0011] Referring now to the figures, Figure 1 illustrates an arrangement 100 that advantageously provides dynamic toggling of PDCCH interleaving. In the arrangement 100, a wireless network 110 provides a data traffic session 106 for a UE 102a, e.g., a voice call with another UE 104 or a data packet session with a packet data network 144. A base station 112 of the wireless network 110 serves and communicates with the UE 102a using an air interface 108. Signaling to set up the data traffic session 106 passes from the base station 112 through an access node 122 to a session management node 124. Data packets for the data traffic session 106 pass from the base station 112 through a packet routing node 126 and a proxy node 128 to an Internet Protocol (IP) Multimedia System (IMS) 140 having an IMS Access Media Gateway (IMS-AGW) 142. Furthermore, the network connects the IMS-AGW 142 to the UE 104 and / or the packet data network 144 .

[0012] In some examples, the wireless network 110 may comprise a fifth-generation (5G) cellular network or another wireless network. For the 5G wireless network 110, the base station 112 may comprise a gNodeB (gNB), the access node 122 may comprise an Access Mobility Management Function (AMF), the session management node 124 may comprise a Session Management Function (SMF), and the packet routing node 126 may comprise a User Plane Function (UPF). In some examples, the proxy node 128 comprises a Proxy-Call Session Control Function (P-CSCF).

[0013] 5G cellular networks employ control plane-user plane separation (CUPS), which separates the radio network 110 into a control plane and a user plane. The control plane includes at least an access node 122 and a session management node 124. The user plane includes at least a packet routing node 126 and a proxy node 128. Data packets related to signaling and data session control are routed between the base station 112 and the session management node 124 through the access node 122.

[0014] The access node 122 supports the termination of non-access stratum (NAS) signaling, which is a functional layer in the wireless telecom protocol stack between core network equipment of the wireless network 110 and the UE. NAS signaling is used to manage the establishment of communication sessions and to maintain continuous communication with user equipment as the user equipment moves. The base station 112 selects an access node 122 (from multiple access nodes in the wireless network 110) for a particular UE based on network slicing constraints and the support required by the UE. Network slicing divides the wireless network 110 into multiple virtual networks.

[0015] One function of the access node 122 is to route control plane data packets between the base station 112 and the session management node 124. The network segment between the base station 112 and the access node 122 uses the N2 reference interface, and the network segment between the access node 122 and the session management node 124 uses the N11 reference interface.

[0016] The session management node 124 interacts with the separated data plane and is responsible for creating, updating, and removing protocol data unit (PDU) sessions and managing session contexts with the packet routing node 126. The network segment between the session management node 124 and the packet routing node 126 uses the N4 reference interface.

[0017] The packet routing node 126 performs packet routing, forwarding, packet inspection, and quality of service (QoS) handling for user plane data packets. The packet routing node 126 handles external protocol data unit (PDU) sessions between the wireless network 110 and an external data network (DN), e.g., a network. One function of the packet routing node 126 is to route user plane data packets between the base station 112 and the proxy node 128 under management of the session management node 124. The network segment between the base station 112 and the packet routing node 126 uses the N3 reference interface, the network segment between the packet routing node 126 and the external data network (DN) uses the N6 reference interface, and the network segment between the packet routing node 126 and the proxy node 128 uses the Gm reference interface.

[0018] The proxy node 128 is the liaison point between the wireless network 110 and the IMS 140 and serves as a proxy server for the UEs whose user plane data packets pass between the base station 112 and the packet routing node 126. Session Initiation Protocol (SIP) signaling traffic to and from the UE passes through the proxy node 128. The UE discovers the proxy node 128 through a discovery process that uses a Network Function (NF) Repository Function (NRF) in the wireless network 110. The proxy node 128 may be located in the wireless network 110 or in the IMS 140.

[0019] Several advantages result from CUPS. One advantage is that the session management node 124 may be located in a centralized location for ease of management, while the packet routing node 126 may be located in another location based on latency and other performance issues for user plane data traffic between the UE and either the external DN or the IMS 140. This is a significant performance improvement for highly mobile connectivity applications and geographically distributed instances of the wireless network 110. Another advantage is that the wireless network 110 may have control plane and user plane capacities that are scaled separately based on actual and expected dominant traffic types.

[0020] A cellular network may use Orthogonal Frequency Division Multiple Access (OFDMA), which uses a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Time Domain Multiple Access (TDMA). In TDMA, all UEs served by a base station must confine their transmissions to assigned time slots. Information is provided on a PDCCH. In some examples, the PDCCH is a broadcast channel because it is received and processed by multiple UEs. In the example shown in FIG. 1, the base station 112 serves four UEs: UE 102a, UE 102b, UE 102c, and UE 102d.

[0021] UE 102a and UE 102b are in a common sector with respect to base station 112 and receive and use the same PDCCH broadcast on a common PDCCH 202 (shown in FIG. 2). Thus, UE 102a and UE 102b are in a PDCCH broadcast group 106a. UE 102c and UE 102d are in a common sector with each other but are different from UE 102a and UE 102b and are therefore in a different PDCCH broadcast group 106b. UE 102c and UE 102d may use different PDCCHs. In some examples, base station 112 toggles interleaving for PDCCH 202 independently from toggling interleaving for the PDCCHs used by UE 102c and UE 102d.

[0022] The base station 112 has an interleave control 130 that controls the interleaving of the PDCCH 202 and any other PDCCHs transmitted by the base station 112, as described below. The base station 112 also has a timer 132 used by the interleave control 130 to assist in the decision whether to toggle interleaving. The UE 102a has an interleave control 134 that toggles de-interleaving of the received PDCCH 202, as described below. The UEs 102b-102d have similar interleave control functions.

[0023] The 3rd Generation Partnership Project (3GPP®) technical standard TS36.211, which has an equivalent European Telecommunications Standards Institute (ETSI) technical standard TS136.211, defines the 5G PDCCH format, for example, in section 6.8. Section 6.8.5 ("Mapping to Resource Elements") defines the interleaving algorithm for the PDCCH in 5G. However, it should be understood that examples of the present disclosure may also be applied to later cellular generations and other networks.

[0024] 2 shows a message sequence diagram 200 of example messages that may occur in the example deployment 100. The base station 112 uses a PDCCH 202 to inform the UEs 102a and 102b of scheduling information and other control information, such as which radio resource elements to use. Data 204, which may be downlink control information (DCI), is transmitted interleaved in the PDCCH 202 as messages 214 and received by the UEs 102a and 102b. Both the UEs 102a and 102b deinterleave the messages 214 to extract information relevant to the UEs 102a and 102b. For example, the interleave control 134 deinterleaves the data 204 related to the UE 102a. In some examples, the message 214 may include some information relevant to both the UE 102a and the UE 102b, some information relevant only to the UE 102a, and some information relevant only to the UE 102b.

[0025] The UE 102a collects radio signal level measurements and transmits radio measurement reports 206, such as signal-to-interference-and-noise ratio (SINR), reference signal received power (RSRP), or reference signal received quality (RSRQ), to the base station 112 as messages 216. In some examples, the UE 102a collects radio signal level measurements and transmits the radio measurement reports on a schedule, such as every 20 milliseconds (ms). Thus, the transmission of a radio measurement report 206 represents the transmission of multiple radio measurement reports. In some examples, the multiple radio measurement reports 206 are made in or near the frequency band of the PDCCH 202. For example, measurements may be made of the received signal power of the PDCCH 202.

[0026] Similarly, the UE 102b collects comparable radio signal level measurements and transmits multiple radio measurement reports 208 as message 218 to the base station 112. The base station 112 uses the multiple radio measurement reports 206 and 208 to determine whether to toggle interleaving of the PDCCH 202 in a toggle decision 230. In the example shown, the toggle decision 230 results in the base station 112 deciding to discontinue PDCCH interleaving. In some examples, this may be the case when both the UE 102a and the UE 102b are receiving a strong enough PDCCH 202 radio signal that interleaving is not required to maintain reliable decoding in the presence of interference and other noise. The decision process is performed by the interleaving control 130 and is described in further detail in connection with FIGS. 3A-4.

[0027] The base station 112 notifies the UEs 102a and 102b that it is discontinuing PDCCH interleaving using a message 232a for at least the UE 102a. A combined message for all UEs receiving the PDCCH broadcast, rather than a separate message for each UE, is used in some examples, although FIG. 2 illustrates the use of an optional separate message 232b for the UE 102b. In some examples, the PDCCH 202 is used for messages 232a and / or 232b, although in some examples, different channels are used. The data 224 is then transmitted on the PDCCH 202 as message 234 without interleaving. The interleave control 134 discontinues deinterleaving of the data received on the PDCCH 202.

[0028] The UE 102a and the UE 102b continue to collect radio signal level measurements and transmit radio measurement reports to the base station 112. For example, the UE 102a transmits multiple radio measurement reports 226 as message 236, and the UE 102b transmits multiple radio measurement reports 228 as message 238. The base station 112 uses the multiple radio measurement reports 226 and 228 to determine whether to toggle interleaving of the PDCCH 202 in a toggle decision 250. In the example shown, the toggle decision 250 results in the base station 112 deciding to resume PDCCH interleaving. In some examples, this may be the case when either the UE 102a or the UE 102b is receiving a weak enough PDCCH 202 radio signal that interleaving may be required to maintain reliable decoding in the presence of interference and other noise. The decision process is performed by the interleaving control 130 and is described in further detail in connection with FIGS. 3A-4.

[0029] The base station 112 notifies the UEs 102a and 102b that PDCCH interleaving has resumed using message 252a for at least UE 102a. In some examples, a combined message for all UEs receiving the PDCCH broadcast is used rather than a separate message for each UE, although FIG. 2 illustrates the use of an optional separate message 252b for UE 102b. In some examples, the PDCCH 202 is used for messages 252a and / or 252b, although in some examples, different channels are used. The data 244 is then transmitted on the PDCCH 202 as message 254 with interleaving. The interleave control 134 deinterleaves the data 244 for UE 102a.

[0030] An example deployment 100 uses wireless signal quality thresholds to determine whether to toggle PDCCH interleaving, and some example thresholds are shown in Figures 3A, 3B, and 3C. In Figure 3A, a graph 300 plots a wireless reception parameter 302 (e.g., wireless signal power level, SINR, a composite parameter, or another) as a function of time based, at least in part, on measurements reported by the UE 102a. The wireless reception parameter 302 typically increases over time and crosses a threshold 304. This may occur, for example, when the UE 102a is moving toward the base station 112, and the path loss of the PDCCH 202 decreases as the UE 102a moves closer to the base station 112 and the transmission path length shortens.

[0031] During a time period 310, the radio reception parameter 302 is generally below the threshold 304, and during a time period 314, the radio reception parameter 302 is above the threshold 304. Within the time period 310, the radio reception parameter 302 briefly rises above the threshold 304 for a short period 312, and then falls below the threshold 304 again. If the base station 112 were to immediately toggle PDCCH interleaving without any delay, the PDCCH interleaving may toggle off and on in a rapid ping-pong manner. To prevent this, the timer 132 (see FIG. 1) is used in some examples to introduce a delay before a toggle event.

[0032] In the scenario depicted in FIG. 3A, the PDCCH 202 is interleaved for a period 310 and for a short period into period 314, and then the PDCCH 202 is not interleaved for the remaining period 314.

[0033] 3B, a graph 320 plots the radio reception parameter 322 for the UE 102a, which may be the same radio reception parameter 302, but at different times. The radio reception parameter 322 generally decreases over time and crosses a threshold 324. This may occur, for example, when the UE 102a is moving away from the base station 112, and the propagation loss of the PDCCH 202 increases due to an increase in the transmission path length. During a time period 330, the radio reception parameter 322 is generally above the threshold 324, and during a time period 334, the radio reception parameter 322 is below the threshold 324. A delay may be used for both the on-to-off and off-to-on toggling directions.

[0034] In the scenario depicted in FIG. 3B, the PDCCH 202 is not interleaved during period 330 and for a short period into period 334, and then the PDCCH 202 is interleaved for the remaining period 334.

[0035] In some examples, threshold 324 is lower than threshold 304 so that a higher received signal power is required to trigger a toggle of interleaving from on to off than is required to trigger a toggle of interleaving from off to on. This creates a hysteresis condition that reduces the likelihood of a ping-pong effect that might otherwise occur if the radio reception of UE 102a were rapidly oscillating above and below threshold 304. The hysteresis condition requires that once interleaving is stopped, the radio reception must drop a significant amount before interleaving can be resumed.

[0036] 3C illustrates a composite threshold where two conditions must be met for the threshold to be met overall. For example, threshold 304 is illustrated as a threshold number 306 of radio measurement reports meeting a threshold radio signal level 308, and threshold 324 is illustrated as a threshold number 326 of radio measurement reports meeting a threshold radio signal level 328. In some examples, threshold number 306 and threshold number 326 are the same or nearly the same, with threshold radio signal level 308 being at least as high as threshold radio signal level 328.

[0037] In some examples, the threshold number 306 and / or 326 may be set as a number (without reference to the timer 132), such as 40 or 50, or may be set based on the time interval (measured by the timer 132) and the rate at which the UE 102a transmits measurement reports (e.g., 50 reports per second at 20 ms). In some examples, the threshold number 306 may also be determined using some minimum number of radio measurement reports evaluated, where a percentage of the minimum number of radio measurement reports exceed the threshold radio signal level 308. In some examples, all radio measurement reports within a period of time may be required to exceed the threshold radio signal level 308. One possible example for the threshold number 306 may be 80% of measurements exceeding the threshold radio signal level 308 in one full second, which is 0.8 x 1 / 0.02 = 40. Numerous other equivalents are possible.

[0038] In some examples, the threshold radio signal level 308 is −100 decibel milliwatts (dBm) or −105 dBm, or some other value. In some examples, the threshold radio signal level 328 is 1 dBm, 2 dBm, 3 dBm, 5 dBm, or some other amount lower than the threshold radio signal level 308.

[0039] 4 shows a flowchart 400 of example operations associated with the deployment 100 providing a data traffic session 106 for the UE 102a. In some examples, at least a portion of the flowchart 400 may be performed using one or more computing devices 600 of FIG. 6 (e.g., the base station 112, the access node 122, the session management node 124, the packet routing node 126, and the proxy node 128 may use examples of the computing devices 600). In some examples, the wireless network 110 comprises a 5G wireless network. In some examples, the data traffic session 106 comprises a voice session or a packet data session (other than a voice session).

[0040] The flowchart 400 begins at operation 402 with the UE 102 registering with the base station 112, such that the base station 112 is the serving base station for the UE 102a. In some examples, the base station 112 comprises a gNB and / or interleaves the PDCCH 202 by default. Operation 404 includes the base station 112 interleaving data (e.g., data 204) transmitted on the PDCCH 202. At operation 406, the UEs 102a and 102b receive and deinterleave data received on the PDCCH 202. In the scenario shown in FIG. 1, the UEs 102a and 102b are in the PDCCH broadcast group 106a. Additional UEs served by the base station 112, for example, UEs 102c and 102d, are in a separate PDCCH broadcast group 106b.

[0041] In operation 408, the UE 102a collects radio measurements and transmits a plurality of radio measurement reports 206 to the base station 112 in operation 410. In some examples, each measurement report includes at least one signal parameter selected from a list consisting of SINR, RSRP, and RSRQ. In some examples, the UE 102a transmits the measurement reports on a schedule, for example, at intervals of 20 ms or greater. In operation 412, the base station 112 receives the plurality of radio measurement reports 206 from the UE 102a.

[0042] In a determining operation 414, the wireless network 110 (possibly using the interleaving control 130 at the base station 112) determines, based on at least a plurality of radio measurement reports 206, whether radio reception by the UE 102a satisfies a threshold value 304. This is used to determine whether to discontinue or resume PDCCH interleaving. In some examples, the decision to discontinue or resume PDCCH interleaving is made independently for each PDCCH broadcast group, meaning that the determining operation 414 is made separately for the PDCCH broadcast groups 106a and 106b. In some examples, the threshold value 304 includes a composite threshold value comprising a threshold number 306 of radio measurement reports that indicate that the UE 102a receives a radio signal from the base station 112 that meets or exceeds a threshold radio signal level 308.

[0043] In some examples, the plurality of radio measurement reports 206 comprises a minimum number of radio measurement reports. In some examples, the threshold number 306 is less than or equal to the minimum number of radio measurement reports. In some examples, the threshold number 306 is determined, at least in part, by the timer 132 and the rate at which the UE 102a transmits measurement reports. In some examples, the threshold number 306 is set without reference to a timer. In some examples, the threshold number 306 is determined, at least in part, by the rate at which the minimum number of radio measurement reports is transmitted. In some examples, the threshold number 306 of radio measurement reports is at least 40. In some examples, the threshold radio signal level 308 is based at least on the frequency band of the PDCCH 202. In some examples, the threshold radio signal level 308 is −100 dBm or −105 dBm.

[0044] If the radio reception by the UE 102a does not meet the threshold 304 (i.e., the radio reception is not good enough that PDCCH interleaving may be stopped), the flowchart 400 returns to operation 404. In other cases, if the radio reception by the UE 102a is good enough that PDCCH interleaving may be stopped, then at decision operation 414, the wireless network 110 determines, based on at least a plurality of radio measurement reports 206, that the radio reception by the UE 102a meets the threshold 304. In some examples, the decision to cease PDCCH interleaving includes determining both that the radio reception by the UE 102a meets the threshold 304 and that the radio reception by the UE 102b meets the threshold 304.

[0045] Operation 416 includes, based at least on a determination that wireless reception by the UE 102a satisfies the threshold 304, notifying the UE 102a by the base station 112 that PDCCH interleaving is being discontinued. At operation 418, the UE 102a receives the notification from the base station 112 as a message 232a. At operation 420, the base station 112 transmits data (e.g., data 224) on the PDCCH 202 without interleaving. At least based on receiving the message 232a, at operation 422, the UE 102a discontinues deinterleaving of data received on the PDCCH 202.

[0046] In operation 424, the UE 102a collects radio measurements and in operation 426 transmits a plurality of radio measurement reports 226 to the base station 112. In operation 428, the base station 112 receives the plurality of radio measurement reports 226 from the UE 102a.

[0047] At a determining operation 430, the wireless network 110 determines whether radio reception by the UE 102a satisfies a threshold 324 based on at least a plurality of radio measurement reports 226. This is used to determine whether to resume PDCCH interleaving. In some examples, the determining operation 430 is performed independently for each PDCCH broadcast group. In some examples, the threshold 324 includes a composite threshold comprising a threshold number 326 of radio measurement reports indicating that the UE 102a receives a radio signal from the base station 112 that does not meet a threshold radio signal level 328. Here, meeting the threshold 324 is defined to mean poor performance, such that the measured radio parameter is lower than a reference value (e.g., the threshold radio signal level 328).

[0048] In some examples, the threshold radio signal level 328 is lower than the threshold radio signal level 308, for example, by at least 1 dBm, although in some examples the threshold radio signal level 328 may be the same as the threshold radio signal level 308. In some examples, the threshold radio signal level 328 is based at least on the frequency band of the PDCCH 202. In some examples, the threshold number 326 is the same as the threshold number 306, although these numbers may be different in some examples.

[0049] If the radio reception by the UE 102a does not meet the threshold 324 (i.e., the radio reception is good enough that PDCCH interleaving may remain stopped), the flowchart 400 returns to operation 420. In other cases, if the radio reception by the UE 102a is poor enough that PDCCH interleaving should be resumed, then at decision operation 430 the wireless network 110 determines, based on at least a plurality of radio measurement reports 226, that the radio reception by the UE 102a meets the threshold 324. In some examples, the decision to resume PDCCH interleaving includes determining either that the radio reception by the UE 102a meets the threshold 324 or that the radio reception by the UE 102b meets the threshold 324.

[0050] Operation 432 includes, based at least on a determination that wireless reception by the UE 102a meets threshold 324, notifying the UE 102a that PDCCH interleaving is being resumed by the base station 112. At operation 434, the UE 102a receives the notification from the base station 112 as message 252a. The flowchart 400 then returns to operation 404. At this next pass-through operation 404, the base station 112 transmits data (e.g., data 244) on the PDCCH 202 with interleaving. Also at this next pass-through operation 400, operation 404 includes deinterleaving data received on the PDCCH 202 by the UE 102a based at least on receipt of the second message.

[0051] Figure 5 shows a flowchart 500 of example operations associated with example deployment 100. In some examples, at least a portion of flowchart 500 may be performed using one or more computing devices 600 of Figure 6. Flowchart 500 begins with operation 502, which includes interleaving, by a base station, data transmitted on a PDCCH.

[0052] Operation 504 includes receiving, by the base station, a first plurality of radio measurement reports from the first UE. Operation 506 includes determining, by the wireless network, based at least on the first plurality of radio measurement reports, that radio reception by the first UE meets a first threshold. Operation 508 includes, based at least on determining that radio reception by the first UE meets the first threshold, notifying, by the base station, the first UE that PDCCH interleaving is being discontinued. Operation 510 includes transmitting, by the base station, data on the PDCCH without interleaving.

[0053] FIG. 6 shows a block diagram of a computing device 600 that can be used as any component described herein that may require computing or storage capabilities. The computing device 600 includes at least a processor 602 and a memory 604, which holds program code 610, a data area 620, and other logic storage 630. The memory 604 is any device that allows information, such as computer-executable instructions and / or other data, to be stored and retrieved. For example, the memory 604 may include one or more random access memory (RAM) modules, flash memory modules, hard disks, solid-state disks, persistent memory devices, and / or optical disks. The program code 610 comprises computer-executable instructions and computer-executable components, including any instructions necessary to perform the operations described herein. The data area 620 holds any data necessary to perform the operations described herein. The memory 604 also includes other logic storage 630 that performs or facilitates other functions disclosed herein or otherwise required by the computing device 600. Input / output (I / O) component 640 facilitates receiving input from users and other devices and generating displays for users and outputs for other devices. Network interface 650 enables communication with remote nodes 670 in network 660, which may represent another implementation of computing device 600. For example, remote nodes 670 may represent another of the aforementioned nodes in arrangement 100.

[0054] Further examples An exemplary method for providing a data traffic session in a wireless network includes: interleaving, by a base station, data transmitted on a PDCCH; receiving, by the base station, a first plurality of radio measurement reports from a first UE; determining, by the wireless network, based on at least the first plurality of radio measurement reports, that radio reception by the first UE satisfies a first threshold; notifying, by the base station, the first UE that it is discontinuing PDCCH interleaving based on at least the determination that radio reception by the first UE satisfies the first threshold; and transmitting, by the base station, the data on the PDCCH without interleaving.

[0055] An exemplary system for providing a data traffic session in a wireless network comprises a processor and a computer-readable medium storing instructions that, when executed by the processor, operate to: interleave, by a base station, data to be transmitted on a PDCCH; receive, by the base station, a first plurality of radio measurement reports from a first UE; determine, by the wireless network, based on at least the first plurality of radio measurement reports, that radio reception by the first UE meets a first threshold; based on at least the determination that the radio reception by the first UE meets the first threshold, notify, by the base station, the first UE that it is ceasing PDCCH interleaving; and transmit, by the base station, the data on the PDCCH without interleaving.

[0056] One or more exemplary computer storage devices store computer-executable instructions that, when executed by a computer, cause the computer to perform operations including: interleaving, by a base station, data transmitted on a PDCCH; receiving, by the base station, a first plurality of radio measurement reports from a first UE; determining, by the wireless network based on at least the first plurality of radio measurement reports, that radio reception by the first UE satisfies a first threshold; based at least on determining that the radio reception by the first UE satisfies the first threshold, notifying, by the base station, the first UE that it is ceasing PDCCH interleaving; and transmitting, by the base station, the data on the PDCCH without interleaving.

[0057] Alternatively, or in addition to other examples described herein, examples include any combination of the following: receiving, by the base station, a second plurality of radio measurement reports from the first UE; determining, by the wireless network, based on at least a second plurality of radio measurement reports, that radio reception by the first UE satisfies a second threshold; - notifying, by the base station, the first UE that PDCCH interleaving is being resumed based on at least a determination that radio reception by the first UE satisfies a second threshold; - interleaving, by the base station, the data transmitted on the PDCCH; The first UE and the second UE are in a first PDCCH broadcast group; and -further UEs served by the base station are in separate PDCCH broadcast groups; determining, by the wireless network, independently for each PDCCH broadcast group, whether to discontinue or resume PDCCH interleaving; The decision to discontinue PDCCH interleaving includes determining both that radio reception by the first UE satisfies a first threshold and that radio reception by the second UE satisfies a first threshold; and The decision to resume PDCCH interleaving includes determining that radio reception by the first UE satisfies a second threshold or that radio reception by the second UE satisfies a second threshold; and the first threshold comprises a composite threshold comprising a first threshold number of radio measurement reports indicating that the first UE receives a radio signal from the base station that meets or exceeds a first threshold radio signal level; the second threshold comprises a composite threshold comprising a second threshold number of radio measurement reports indicating that the first UE receives a radio signal from the base station that does not meet the second threshold radio signal level; the second threshold radio signal level is lower than the first threshold radio signal level; the first plurality of radio measurement reports comprises a minimum number of radio measurement reports; and the first threshold number of radio measurement reports is less than or equal to the minimum number of radio measurement reports; The first threshold radio signal level is based on at least a frequency band of the PDCCH; receiving, by a first UE, a first message from a base station indicating that PDCCH interleaving is being discontinued; - ceasing deinterleaving of data received on a PDCCH based on reception of at least the first message; receiving, by the first UE, a second message from the base station indicating that PDCCH interleaving is being resumed; - deinterleaving data received on the PDCCH based on reception of at least the second message; - each measurement report includes at least one signal parameter selected from the list consisting of SINR, RSRP, and RSRQ; the data traffic session comprises a voice session; the data traffic session comprises a packet data session; -The wireless network comprises a 5G wireless network; The base station comprises a gNB; the base station comprises a serving base station for the first UE; The base station interleaves the PDCCH by default; registering by a first UE with a base station; the first UE transmitting measurement reports on a schedule; The first UE transmits measurement reports at intervals of 20 ms or more; the first threshold number of radio measurement reports is determined at least in part by a timer and a rate at which the first UE transmits measurement reports; the first threshold number of radio measurement reports is determined, at least in part, by a percentage of a minimum number of radio measurement reports; The first threshold number of radio measurement reports is set without reference to a timer; the first threshold number of radio measurement reports is at least 40; and the first threshold radio signal level is −100 dBm; the first threshold radio signal level is −105 dBm; The first threshold radio signal level is based on at least a frequency band of the PDCCH; - the second threshold number of radio measurement reports is equal to the first threshold number of radio measurement reports; the second plurality of radio measurement reports comprises a second minimum number of radio measurement reports; and the second threshold radio signal level is equal to or lower than the first threshold radio signal level; the second threshold radio signal level is at least 1 dbm lower than the first threshold radio signal level; The second threshold radio signal level is based on at least a frequency band of the PDCCH; This includes any combination of:

[0058] The order in which operations are performed or performed in the examples of the present disclosure shown and described herein is not essential unless otherwise specified. That is, operations may be performed in any order unless otherwise specified, and examples of the present disclosure may include additional or fewer operations than those disclosed herein. For example, it is contemplated that performing or performing a particular operation before, concurrently with, or after another operation is within the scope of aspects of the present disclosure. It will be understood that the benefits and advantages described above may relate to one embodiment or to several embodiments. When introducing elements of aspects or examples of the present disclosure, the articles "a," "an," "the," and "said" are intended to mean that one or more of the elements are present. The terms "comprising," "including," and "having" are intended to be inclusive, meaning that there may be additional elements other than the listed elements. The term "exemplary" is intended to mean "an example of."

[0059] Having described aspects of the present disclosure in detail, it will be apparent that modifications and variations are possible without departing from the scope of the aspects of the present disclosure as defined in the appended claims. Because various changes can be made in the structures, products, and methods described above without departing from the scope of the aspects of the present disclosure, it is intended that all matter contained in the above description and shown in the accompanying drawings be interpreted in an illustrative and not a limiting sense.

Claims

1. 1. A method for providing a data traffic session in a wireless network, comprising: The method comprises: interleaving, by a base station, data transmitted on a physical downlink control channel (PDCCH); receiving, by the base station, a first plurality of radio measurement reports from a first user equipment (UE); determining, by the wireless network based on at least the first plurality of the radio measurement reports, that radio reception by the first UE satisfies a first threshold; and notifying, by the base station, the first UE that PDCCH interleaving is being discontinued based at least on a determination that radio reception by the first UE satisfies the first threshold. transmitting, by the base station, data on the PDCCH without interleaving; Including, A method characterized by:

2. receiving, by the base station, a second plurality of radio measurement reports from the first UE; determining, by the wireless network based on at least the second plurality of the radio measurement reports, that radio reception by the first UE satisfies a second threshold; notifying, by the base station, the first UE that it is resuming PDCCH interleaving based at least on a determination that radio reception by the first UE satisfies the second threshold; interleaving, by the base station, data transmitted on the PDCCH; Including, The method of claim 1.

3. The first UE and the second UE are in a first PDCCH broadcast group; further UEs served by the base station are in separate PDCCH broadcast groups; The method comprises: determining, by the wireless network, independently for each of the PDCCH broadcast groups, whether to discontinue or resume PDCCH interleaving; Including, The step of deciding to discontinue PDCCH interleaving comprises: determining both that radio reception by the first UE satisfies the first threshold and that radio reception by the second UE satisfies the first threshold; Including, The step of determining to resume PDCCH interleaving comprises: radio reception by the first UE satisfies the second threshold; or radio reception by the second UE satisfies the second threshold; determining whether Including, The method of claim 2.

4. The first threshold value is a composite threshold including a first threshold number of the radio measurement reports indicating that the first UE receives a radio signal from the base station that meets or exceeds a first threshold radio signal level; Including, The second threshold value is a composite threshold including a second threshold number of the radio measurement reports indicating that the first UE receives a radio signal from the base station that does not meet a second threshold radio signal level; Including, the second threshold radio signal level is lower than the first threshold radio signal level; The method of claim 2.

5. The first plurality of the radio measurement reports comprises: A minimum number of radio measurement reports, With the first threshold number of radio measurement reports is less than or equal to the minimum number of radio measurement reports, The first threshold radio signal level is based on at least a frequency band of the PDCCH. The method of claim 4.

6. receiving, by the first UE, a first message from the base station indicating that PDCCH interleaving is being discontinued; ceasing deinterleaving of data received on the PDCCH based on at least the first message; receiving, by the first UE, a second message from the base station indicating that PDCCH interleaving is being resumed; deinterleaving data received on the PDCCH based on at least the second message; Including, The method of claim 1.

7. 1. A system for providing a data traffic session in a wireless network, comprising: The system comprises: a processor; a computer-readable medium storing instructions that operate when executed by the processor; With The instruction: Interleaving data transmitted by a base station on a physical downlink control channel (PDCCH), receiving, by the base station, a first plurality of radio measurement reports from a first user equipment (UE); determining, by the wireless network based on at least the first plurality of the radio measurement reports, that radio reception by the first UE satisfies a first threshold; notifying, by the base station, the first UE that PDCCH interleaving is being discontinued based on at least a determination that radio reception by the first UE satisfies the first threshold; transmitting data on the PDCCH without interleaving by the base station; It works like this, A system characterized by:

8. The instructions may further include: receiving, by the base station, a second plurality of radio measurement reports from the first UE; determining, by the wireless network based on at least the second plurality of the radio measurement reports, that radio reception by the first UE satisfies a second threshold; notifying the first UE that PDCCH interleaving is being resumed by the base station based on at least a determination that radio reception by the first UE satisfies the second threshold; Interleaving data transmitted on the PDCCH by the base station; It works like this, The system of claim 7.

9. The first UE and the second UE are in a first PDCCH broadcast group, Further UEs served by the base station are in separate PDCCH broadcast groups, The instructions are further operative to determine, by the wireless network, whether to suspend or resume PDCCH interleaving for each of the PDCCH broadcast groups independently; The decision to discontinue PDCCH interleaving is determining both that radio reception by the first UE satisfies the first threshold and that radio reception by the second UE satisfies the first threshold; Including, The decision to resume PDCCH interleaving is made by: radio reception by the first UE satisfies the second threshold; or radio reception by the second UE satisfies the second threshold; The decision of either Including, The system of claim 8.

10. The instructions may further include: receiving, by the first UE, a first message from the base station indicating that PDCCH interleaving is being stopped; based on receipt of at least the first message, ceasing deinterleaving of data received on the PDCCH; receiving, by the first UE, a second message from the base station indicating that PDCCH interleaving is being resumed; deinterleaving data received on the PDCCH based on at least the receipt of the second message; It works like this, The system of claim 7.

11. Each of the radio measurement reports comprises: at least one signal parameter selected from the list consisting of: signal-to-interference-and-noise ratio (SINR), reference signal received power (RSRP), and reference signal received quality (RSRQ); Including, The system of claim 7.

12. one or more computer storage devices having stored thereon computer-executable instructions that, when executed by a computer, cause the computer to perform operations; The operation is Interleaving data transmitted on a physical downlink control channel (PDCCH) by a base station of a wireless network; receiving, by the base station, a first plurality of radio measurement reports from a first user equipment (UE); determining, by the wireless network based on at least the first plurality of the radio measurement reports, that radio reception by the first UE satisfies a first threshold; notifying, by the base station, the first UE that PDCCH interleaving is being discontinued based at least on a determination that radio reception by the first UE satisfies the first threshold; transmitting, by the base station, data on the PDCCH without interleaving; Including, One or more computer storage devices.

13. The operation is receiving, by the base station, a second plurality of radio measurement reports from the first UE; determining, by the wireless network based on at least the second plurality of the radio measurement reports, that radio reception by the first UE satisfies a second threshold; notifying, by the base station, the first UE that PDCCH interleaving is being resumed based at least on a determination that radio reception by the first UE satisfies the second threshold; interleaving, by the base station, data transmitted on the PDCCH; Including, 13. One or more computer storage devices according to claim 12.

14. The first UE and the second UE are in a first PDCCH broadcast group, Further UEs served by the base station are in separate PDCCH broadcast groups, The operation is determining, by the wireless network, whether to discontinue or resume PDCCH interleaving for each of the PDCCH broadcast groups independently; Including, The decision to discontinue PDCCH interleaving is determining both that radio reception by the first UE satisfies the first threshold and that radio reception by the second UE satisfies the first threshold; Including, The decision to resume PDCCH interleaving is made by: radio reception by the first UE satisfies the second threshold; or radio reception by the second UE satisfies the second threshold; The decision of either Including, 14. One or more computer storage devices according to claim 13.

15. The operation is receiving, by the first UE, a first message from the base station indicating that PDCCH interleaving is being discontinued; ceasing deinterleaving of data received on the PDCCH based on receipt of at least the first message; receiving, by the first UE, a second message from the base station indicating that PDCCH interleaving is being resumed; deinterleaving data received on the PDCCH based on at least the receipt of the second message; Including, 13. One or more computer storage devices according to claim 12.

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