Section 3.2.1: Clarify Game streaming requirements

Partial fixes for w3c#103

Updated requiements by the feedbacks frome the First December
WebRTC WG Virtual Interim (12-05-2023)

Author: xingri

index.html

@@ -299,6 +299,21 @@ <h4>Game streaming</h4>
            delay. This requirement is addressed by jitterBufferTarget, defined in
            [[?WebRTC-Extensions]] Section 6.</td>
         </tr>
+        <tr>
+           <td>N48</td>
+           <td>The application must be able to control video decoding to continue even
+           after a frame-loss without waiting for a key frame. This helps the application recover
+           faster from lossy network conditions.</td>
+	</tr>
+           <td>N49</td>
+           <td>To adapt the video quality to the varying network and maintain consistent latency,
+           the application needs to configure the TWCC (Transport-wide Congestion Control)
+           RTCP feedback transmission interval. (TWCC RTCP feedback currently provides
+           the packet loss information, but there are no knobs to configure its period.
+           Moreover, TWCC-02 does not meet the requirement, because it relies on the sender’s request,
+           which adds header overhead and is susceptible to sender packet loss and jitter.)</td>
+        <tr>
+	</tr>
     </tbody>
 </table>
 <p>Experience: Microsoft's Xbox Cloud Gaming and NVIDIA's GeForce NOW are examples of this use case, with media
@@ -1071,9 +1086,24 @@ <h3>Requirements Summary</h3>
            <td>The WebRTC connection can generate signals indicating demands
            for keyframes, and surface those to the application.</td>
         </tr>
+        <tr id="N48">
+           <td>N48</td>
+           <td>The application must be able to control video decoding to continue even
+           after a frame-loss without waiting for a key frame. This helps the application
+           recover faster from lossy network conditions.</td>
+        </tr>
+        <tr id="N49">
+           <td>N49</td>
+           <td>To adapt the video quality to the varying network and maintain consistent latency,
+           the application needs to configure the TWCC (Transport-wide Congestion Control)
+           RTCP feedback transmission interval. (TWCC RTCP feedback currently provides
+           the packet loss information, but there are no knobs to configure its period.
+           Moreover, TWCC-02 does not meet the requirement, because it relies on the sender’s request,
+           which adds header overhead and is susceptible to sender packet loss and jitter.)</td>
+        </tr>
     </tbody>
 </table>
-<p class="note">Requirements N40-N47 have unresolved comments from a Call for Consensus (CfC).</p>
+<p class="note">Requirements N40-N49 have unresolved comments from a Call for Consensus (CfC).</p>
 </section>
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