# US 9,521,685 B2 · Circuit arrangement and method of determining a priority of packet scheduling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,685 B2 - Document ID: US9521685B2 - Status: Granted - Kind: B2 - Application number: 14/430,283 - Filed: 2012-09-21 - Published: 2015-09-03 - Granted: 2016-12-13 - Earliest claimed: 2012-09-21 - Assignees: Agency for Science, Technology and Research; Huawei International Pte. Ltd. - Applicants: Agency for Science, Technology and Research; Huawei International PTE., Ltd. - Inventors: Peng Hui Tan; Jinghong Zheng; Sumei Sun; Zhengguo Li; Kedi Wu; Yuejun Wei - Web page: https://patentgrep.com/patent/US9521685B2 ## CPC - H04W 72/569: {of the traffic information} - H04L 47/2408: for supporting different services, e.g. a differentiated services [DiffServ] type of service - H04L 47/2458: {Modification of priorities while in transit} - H04L 65/61: for supporting one-way streaming services, e.g. Internet radio - H04L 65/70: Media network packetisation - H04L 65/80: Responding to QoS - H04N 19/127: Prioritisation of hardware or computational resources - H04N 19/164: Feedback from the receiver or from the transmission channel - H04N 19/172: the region being a picture, frame or field - H04N 19/177: the unit being a group of pictures [GOP] - H04N 21/23106: {involving caching operations (prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568)} - H04N 21/8455: {involving pointers to the content, e.g. pointers to the I-frames of the video stream} - H04W 72/542: using measured or perceived quality - H04N 21/6131: {involving transmission via a mobile phone network (wireless downlink channel access H04W74/006)} - H04W 8/04: Registration at HLR or HSS [Home Subscriber Server] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The present invention is a circuit arrangement for a wireless cellular network. The circuit arrangement includes a determiner configured to determine a priority value of each packet of a plurality of packets based on at least a position of a video frame in a group of pictures and a type of the video frame, the video frame or a part thereof being contained in the packet, wherein the type of video frame comprises I frame data or P frame data; and wherein the determiner is further configured to set the priority value of a packet including I frame data lower than the priority value of at least one other packet including P frame data; and a controller configured to control scheduling of the packet based on the determined priority value for a communication device in a wireless cellular network. A method of determining a priority of packet scheduling is also disclosed. ## Claims ### Claim 1 A circuit arrangement for a wireless cellular network, the circuit arrangement comprising: a determiner configured to determine a priority value of each packet of a plurality of packets based on at least a position of a video frame in a group of pictures (GOP) and a type of the video frame, the video frame or a part thereof being contained in the packet, wherein the type of video frame comprises I frame data or P frame data; and wherein the determiner is further configured to set the priority value of a packet including I frame data lower than the priority value of at least one other packet including P frame data; and a controller configured to control scheduling of the packet based on the determined priority value for a communication device in a wireless cellular network. ### Claim 2 (depends on 1) The circuit arrangement of claim 1, wherein the determiner operates on a first layer of the wireless network or a part thereof, and the controller operates on a second layer of the wireless network or a part thereof, the first layer being different from the second layer. ### Claim 3 (depends on 2) The circuit arrangement of claim 2, wherein the first layer of the wireless network comprises a Layer 3 (L3). ### Claim 4 (depends on 2) The circuit arrangement of claim 2, wherein the second layer of the wireless network comprises a medium access control (MAC) layer. ### Claim 5 (depends on 1) The circuit arrangement of claim 1, wherein the determiner is configured to determine the priority value further based on a condition of a channel for packet transmission, and a delay value indicating an amount of delay for transmitting the packet. ### Claim 6 (depends on 5) The circuit arrangement of claim 5, wherein the condition of the channel relates to a channel rate of the communication device. ### Claim 7 (depends on 6) The circuit arrangement of claim 6, wherein the channel rate comprises a channel quality indicator. ### Claim 8 (depends on 6) The circuit arrangement of claim 6, wherein upon determining the priority value of the packet, the controller is further configured to select a resource block and assign to the resource block the communication device which has the largest channel rate as compared to those of other communication devices in the wireless network. ### Claim 9 (depends on 5) The circuit arrangement of claim 5, wherein the delay value comprises a Head of Line (HOL) delay. ### Claim 10 (depends on 9) The circuit arrangement of claim 9, wherein the priority value has a relationship with the HOL delay based on a decreasing function or a concave function or a convex function. ### Claim 11 (depends on 9) The circuit arrangement of claim 9, wherein the priority value has a relationship with an overall distortion caused by a loss of packet (Dk) based an increasing function. ### Claim 12 (depends on 1) The circuit arrangement of claim 1, wherein the priority value is derived using a mathematical function which is selected based on a type of traffic scheduled for the packet. ### Claim 13 (depends on 12) The circuit arrangement of claim 12, wherein the mathematical function is a sigmoidal-like function. ### Claim 14 (depends on 1) The circuit arrangement of claim 1, wherein the packet is from a non-real-time data with a rate constraint, and wherein the priority value is derived using a mathematical function which converts the rate constraint to a delay constraint. ### Claim 15 (depends on 1) The circuit arrangement of claim 1, wherein the determiner is configured to set the priority value of the packet including the I frame data, the priority value indicating to be about 50% of the highest priority value of the packet including the P frame data. ### Claim 16 A method of determining a priority of packet scheduling in a wireless cellular network comprising a plurality of communication devices, the method comprising: determining a priority value of each packet of a plurality of packets based on at least a position of a video frame in a group of pictures (GOP) and a type of the video frame, the video frame or a part thereof being contained in the packet, wherein the type of video frame comprises I frame data or P frame data; and wherein determining the priority value further comprising setting the priority value of a packet including I frame data lower than the priority value of at least one other packet including P frame data; and controlling scheduling of the packet based on the determined priority value for a communication device in a wireless cellular network. ### Claim 17 (depends on 16) The method of claim 16, wherein determining the priority value comprises determining the priority value on a first layer of the wireless network, and controlling scheduling of the packet comprises controlling scheduling of the packet on a second layer, the first layer being different from the second layer. ### Claim 18 (depends on 16) The method of claim 16, wherein determining the priority value comprises assigning a priority value of higher priority to the packet when the packet is from a real-time video stream or a voice-over-IP (VoIP) stream as compared to when the packet is from a non-real-time data with a rate constraint. ### Claim 19 (depends on 16) The method of claim 16, wherein when the packet is from a non-real-time data with a rate constraint, determining the priority value comprises deriving the priority value using a mathematical function and converting the rate constraint to a delay constraint. ### Claim 20 (depends on 16) The method of claim 16, wherein determining the priority value comprises establishing for a plurality of P frames of the video frame a linearly decreasing priority value of each P frame of a plurality of P frames of the video frame.